diff --git a/server/tests/api/notifications/user-notifications.ts b/server/tests/api/notifications/user-notifications.ts
index f479e1785..662b64e05 100644
--- a/server/tests/api/notifications/user-notifications.ts
+++ b/server/tests/api/notifications/user-notifications.ts
@@ -114,11 +114,12 @@ describe('Test users notifications', function () {
   before(async function () {
     this.timeout(120000)
 
-    await MockSmtpServer.Instance.collectEmails(emails)
+    const port = await MockSmtpServer.Instance.collectEmails(emails)
 
     const overrideConfig = {
       smtp: {
-        hostname: 'localhost'
+        hostname: 'localhost',
+        port
       }
     }
     servers = await flushAndRunMultipleServers(3, overrideConfig)
@@ -194,7 +195,7 @@ describe('Test users notifications', function () {
     it('Should send a new video notification if the user follows the local video publisher', async function () {
       this.timeout(15000)
 
-      await addUserSubscription(servers[0].url, userAccessToken, 'root_channel@localhost:9001')
+      await addUserSubscription(servers[0].url, userAccessToken, 'root_channel@localhost:' + servers[0].port)
       await waitJobs(servers)
 
       const { name, uuid } = await uploadVideoByLocalAccount(servers)
@@ -204,7 +205,7 @@ describe('Test users notifications', function () {
     it('Should send a new video notification from a remote account', async function () {
       this.timeout(50000) // Server 2 has transcoding enabled
 
-      await addUserSubscription(servers[0].url, userAccessToken, 'root_channel@localhost:9002')
+      await addUserSubscription(servers[0].url, userAccessToken, 'root_channel@localhost:' + servers[1].port)
       await waitJobs(servers)
 
       const { name, uuid } = await uploadVideoByRemoteAccount(servers)
@@ -578,7 +579,9 @@ describe('Test users notifications', function () {
       const uuid = resVideo.body.video.uuid
 
       await waitJobs(servers)
-      const resThread = await addVideoCommentThread(servers[1].url, servers[1].accessToken, uuid, 'hello @user_1@localhost:9001 1')
+
+      const text1 = `hello @user_1@localhost:${servers[ 0 ].port} 1`
+      const resThread = await addVideoCommentThread(servers[1].url, servers[1].accessToken, uuid, text1)
       const server2ThreadId = resThread.body.comment.id
 
       await waitJobs(servers)
@@ -588,8 +591,8 @@ describe('Test users notifications', function () {
       const server1ThreadId = resThread2.body.data[0].id
       await checkCommentMention(baseParams, uuid, server1ThreadId, server1ThreadId, 'super root 2 name', 'presence')
 
-      const text = '@user_1@localhost:9001 hello 2 @root@localhost:9001'
-      await addVideoCommentReply(servers[1].url, servers[1].accessToken, uuid, server2ThreadId, text)
+      const text2 = `@user_1@localhost:${servers[ 0 ].port} hello 2 @root@localhost:${servers[ 0 ].port}`
+      await addVideoCommentReply(servers[1].url, servers[1].accessToken, uuid, server2ThreadId, text2)
 
       await waitJobs(servers)
 
@@ -889,10 +892,10 @@ describe('Test users notifications', function () {
 
       await waitJobs(servers)
 
-      await checkNewInstanceFollower(baseParams, 'localhost:9003', 'presence')
+      await checkNewInstanceFollower(baseParams, 'localhost:' + servers[2].port, 'presence')
 
       const userOverride = { socketNotifications: userNotifications, token: userAccessToken, check: { web: true, mail: false } }
-      await checkNewInstanceFollower(immutableAssign(baseParams, userOverride), 'localhost:9003', 'absence')
+      await checkNewInstanceFollower(immutableAssign(baseParams, userOverride), 'localhost:' + servers[2].port, 'absence')
     })
   })
 
@@ -933,29 +936,29 @@ describe('Test users notifications', function () {
     it('Should notify when a local channel is following one of our channel', async function () {
       this.timeout(10000)
 
-      await addUserSubscription(servers[0].url, servers[0].accessToken, 'user_1_channel@localhost:9001')
+      await addUserSubscription(servers[0].url, servers[0].accessToken, 'user_1_channel@localhost:' + servers[0].port)
       await waitJobs(servers)
 
       await checkNewActorFollow(baseParams, 'channel', 'root', 'super root name', myChannelName, 'presence')
 
-      await removeUserSubscription(servers[0].url, servers[0].accessToken, 'user_1_channel@localhost:9001')
+      await removeUserSubscription(servers[0].url, servers[0].accessToken, 'user_1_channel@localhost:' + servers[0].port)
     })
 
     it('Should notify when a remote channel is following one of our channel', async function () {
       this.timeout(10000)
 
-      await addUserSubscription(servers[1].url, servers[1].accessToken, 'user_1_channel@localhost:9001')
+      await addUserSubscription(servers[1].url, servers[1].accessToken, 'user_1_channel@localhost:' + servers[0].port)
       await waitJobs(servers)
 
       await checkNewActorFollow(baseParams, 'channel', 'root', 'super root 2 name', myChannelName, 'presence')
 
-      await removeUserSubscription(servers[1].url, servers[1].accessToken, 'user_1_channel@localhost:9001')
+      await removeUserSubscription(servers[1].url, servers[1].accessToken, 'user_1_channel@localhost:' + servers[0].port)
     })
 
     it('Should notify when a local account is following one of our channel', async function () {
       this.timeout(10000)
 
-      await addUserSubscription(servers[0].url, servers[0].accessToken, 'user_1@localhost:9001')
+      await addUserSubscription(servers[0].url, servers[0].accessToken, 'user_1@localhost:' + servers[0].port)
 
       await waitJobs(servers)
 
@@ -965,7 +968,7 @@ describe('Test users notifications', function () {
     it('Should notify when a remote account is following one of our channel', async function () {
       this.timeout(10000)
 
-      await addUserSubscription(servers[1].url, servers[1].accessToken, 'user_1@localhost:9001')
+      await addUserSubscription(servers[1].url, servers[1].accessToken, 'user_1@localhost:' + servers[0].port)
 
       await waitJobs(servers)
 
@@ -1019,8 +1022,8 @@ describe('Test users notifications', function () {
       autoBlacklistTestsCustomConfig.transcoding.enabled = true
       await updateCustomConfig(servers[0].url, servers[0].accessToken, autoBlacklistTestsCustomConfig)
 
-      await addUserSubscription(servers[0].url, servers[0].accessToken, 'user_1_channel@localhost:9001')
-      await addUserSubscription(servers[1].url, servers[1].accessToken, 'user_1_channel@localhost:9001')
+      await addUserSubscription(servers[0].url, servers[0].accessToken, 'user_1_channel@localhost:' + servers[0].port)
+      await addUserSubscription(servers[1].url, servers[1].accessToken, 'user_1_channel@localhost:' + servers[0].port)
 
     })
 
@@ -1142,8 +1145,8 @@ describe('Test users notifications', function () {
     after(async () => {
       await updateCustomConfig(servers[0].url, servers[0].accessToken, currentCustomConfig)
 
-      await removeUserSubscription(servers[0].url, servers[0].accessToken, 'user_1_channel@localhost:9001')
-      await removeUserSubscription(servers[1].url, servers[1].accessToken, 'user_1_channel@localhost:9001')
+      await removeUserSubscription(servers[0].url, servers[0].accessToken, 'user_1_channel@localhost:' + servers[0].port)
+      await removeUserSubscription(servers[1].url, servers[1].accessToken, 'user_1_channel@localhost:' + servers[0].port)
     })
   })
 
diff --git a/server/tests/api/redundancy/redundancy.ts b/server/tests/api/redundancy/redundancy.ts
index e31329c25..6f2c59076 100644
--- a/server/tests/api/redundancy/redundancy.ts
+++ b/server/tests/api/redundancy/redundancy.ts
@@ -100,7 +100,7 @@ async function check1WebSeed (videoUUID?: string) {
   if (!videoUUID) videoUUID = video1Server2UUID
 
   const webseeds = [
-    'http://localhost:9002/static/webseed/' + videoUUID
+    `http://localhost:${servers[ 1 ].port}/static/webseed/${videoUUID}`
   ]
 
   for (const server of servers) {
@@ -118,8 +118,8 @@ async function check2Webseeds (videoUUID?: string) {
   if (!videoUUID) videoUUID = video1Server2UUID
 
   const webseeds = [
-    'http://localhost:9001/static/redundancy/' + videoUUID,
-    'http://localhost:9002/static/webseed/' + videoUUID
+    `http://localhost:${servers[ 0 ].port}/static/redundancy/${videoUUID}`,
+    `http://localhost:${servers[ 1 ].port}/static/webseed/${videoUUID}`
   ]
 
   for (const server of servers) {
@@ -145,7 +145,12 @@ async function check2Webseeds (videoUUID?: string) {
     }
   }
 
-  for (const directory of [ 'test1/redundancy', 'test2/videos' ]) {
+  const directories = [
+    'test' + servers[0].internalServerNumber + '/redundancy',
+    'test' + servers[1].internalServerNumber + '/videos'
+  ]
+
+  for (const directory of directories) {
     const files = await readdir(join(root(), directory))
     expect(files).to.have.length.at.least(4)
 
@@ -194,7 +199,12 @@ async function check1PlaylistRedundancies (videoUUID?: string) {
     await checkSegmentHash(baseUrlPlaylist, baseUrlSegment, videoUUID, resolution, hlsPlaylist)
   }
 
-  for (const directory of [ 'test1/redundancy/hls', 'test2/streaming-playlists/hls' ]) {
+  const directories = [
+    'test' + servers[0].internalServerNumber + '/redundancy/hls',
+    'test' + servers[1].internalServerNumber + '/streaming-playlists/hls'
+  ]
+
+  for (const directory of directories) {
     const files = await readdir(join(root(), directory, videoUUID))
     expect(files).to.have.length.at.least(4)
 
@@ -239,8 +249,8 @@ async function enableRedundancyOnServer1 () {
 
   const res = await getFollowingListPaginationAndSort(servers[ 0 ].url, 0, 5, '-createdAt')
   const follows: ActorFollow[] = res.body.data
-  const server2 = follows.find(f => f.following.host === 'localhost:9002')
-  const server3 = follows.find(f => f.following.host === 'localhost:9003')
+  const server2 = follows.find(f => f.following.host === `localhost:${servers[ 1 ].port}`)
+  const server3 = follows.find(f => f.following.host === `localhost:${servers[ 2 ].port}`)
 
   expect(server3).to.not.be.undefined
   expect(server3.following.hostRedundancyAllowed).to.be.false
@@ -254,8 +264,8 @@ async function disableRedundancyOnServer1 () {
 
   const res = await getFollowingListPaginationAndSort(servers[ 0 ].url, 0, 5, '-createdAt')
   const follows: ActorFollow[] = res.body.data
-  const server2 = follows.find(f => f.following.host === 'localhost:9002')
-  const server3 = follows.find(f => f.following.host === 'localhost:9003')
+  const server2 = follows.find(f => f.following.host === `localhost:${servers[ 1 ].port}`)
+  const server3 = follows.find(f => f.following.host === `localhost:${servers[ 2 ].port}`)
 
   expect(server3).to.not.be.undefined
   expect(server3.following.hostRedundancyAllowed).to.be.false
@@ -475,12 +485,12 @@ describe('Test videos redundancy', function () {
       await wait(10000)
 
       try {
-        await checkContains(servers, 'http%3A%2F%2Flocalhost%3A9001')
+        await checkContains(servers, 'http%3A%2F%2Flocalhost%3A' + servers[0].port)
       } catch {
         // Maybe a server deleted a redundancy in the scheduler
         await wait(2000)
 
-        await checkContains(servers, 'http%3A%2F%2Flocalhost%3A9001')
+        await checkContains(servers, 'http%3A%2F%2Flocalhost%3A' + servers[0].port)
       }
     })
 
@@ -491,7 +501,7 @@ describe('Test videos redundancy', function () {
 
       await wait(15000)
 
-      await checkNotContains([ servers[1], servers[2] ], 'http%3A%2F%2Flocalhost%3A9001')
+      await checkNotContains([ servers[1], servers[2] ], 'http%3A%2F%2Flocalhost%3A' + servers[0].port)
     })
 
     after(async function () {
diff --git a/server/tests/api/search/search-activitypub-video-channels.ts b/server/tests/api/search/search-activitypub-video-channels.ts
index 70a077ffc..8a008b8c6 100644
--- a/server/tests/api/search/search-activitypub-video-channels.ts
+++ b/server/tests/api/search/search-activitypub-video-channels.ts
@@ -3,16 +3,17 @@
 import * as chai from 'chai'
 import 'mocha'
 import {
-  addVideoChannel, cleanupTests,
+  addVideoChannel,
+  cleanupTests,
   createUser,
   deleteVideoChannel,
   flushAndRunMultipleServers,
-  flushTests,
-  getVideoChannelsList, getVideoChannelVideos,
-  killallServers,
+  getVideoChannelsList,
+  getVideoChannelVideos,
   ServerInfo,
   setAccessTokensToServers,
-  updateMyUser, updateVideo,
+  updateMyUser,
+  updateVideo,
   updateVideoChannel,
   uploadVideo,
   userLogin,
@@ -67,7 +68,7 @@ describe('Test ActivityPub video channels search', function () {
 
   it('Should not find a remote video channel', async function () {
     {
-      const search = 'http://localhost:9002/video-channels/channel1_server3'
+      const search = 'http://localhost:' + servers[ 1 ].port + '/video-channels/channel1_server3'
       const res = await searchVideoChannel(servers[ 0 ].url, search, servers[ 0 ].accessToken)
 
       expect(res.body.total).to.equal(0)
@@ -77,7 +78,7 @@ describe('Test ActivityPub video channels search', function () {
 
     {
       // Without token
-      const search = 'http://localhost:9002/video-channels/channel1_server2'
+      const search = 'http://localhost:' + servers[ 1 ].port + '/video-channels/channel1_server2'
       const res = await searchVideoChannel(servers[0].url, search)
 
       expect(res.body.total).to.equal(0)
@@ -88,8 +89,8 @@ describe('Test ActivityPub video channels search', function () {
 
   it('Should search a local video channel', async function () {
     const searches = [
-      'http://localhost:9001/video-channels/channel1_server1',
-      'channel1_server1@localhost:9001'
+      'http://localhost:' + servers[ 0 ].port + '/video-channels/channel1_server1',
+      'channel1_server1@localhost:' + servers[ 0 ].port
     ]
 
     for (const search of searches) {
@@ -105,8 +106,8 @@ describe('Test ActivityPub video channels search', function () {
 
   it('Should search a remote video channel with URL or handle', async function () {
     const searches = [
-      'http://localhost:9002/video-channels/channel1_server2',
-      'channel1_server2@localhost:9002'
+      'http://localhost:' + servers[ 1 ].port + '/video-channels/channel1_server2',
+      'channel1_server2@localhost:' + servers[ 1 ].port
     ]
 
     for (const search of searches) {
@@ -134,13 +135,13 @@ describe('Test ActivityPub video channels search', function () {
 
     await waitJobs(servers)
 
-    const res = await getVideoChannelVideos(servers[0].url, null, 'channel1_server2@localhost:9002', 0, 5)
+    const res = await getVideoChannelVideos(servers[0].url, null, 'channel1_server2@localhost:' + servers[ 1 ].port, 0, 5)
     expect(res.body.total).to.equal(0)
     expect(res.body.data).to.have.lengthOf(0)
   })
 
   it('Should list video channel videos of server 2 with token', async function () {
-    const res = await getVideoChannelVideos(servers[0].url, servers[0].accessToken, 'channel1_server2@localhost:9002', 0, 5)
+    const res = await getVideoChannelVideos(servers[0].url, servers[0].accessToken, 'channel1_server2@localhost:' + servers[ 1 ].port, 0, 5)
 
     expect(res.body.total).to.equal(1)
     expect(res.body.data[0].name).to.equal('video 1 server 2')
@@ -156,7 +157,7 @@ describe('Test ActivityPub video channels search', function () {
     // Expire video channel
     await wait(10000)
 
-    const search = 'http://localhost:9002/video-channels/channel1_server2'
+    const search = 'http://localhost:' + servers[ 1 ].port + '/video-channels/channel1_server2'
     const res = await searchVideoChannel(servers[0].url, search, servers[0].accessToken)
     expect(res.body.total).to.equal(1)
     expect(res.body.data).to.have.lengthOf(1)
@@ -179,12 +180,13 @@ describe('Test ActivityPub video channels search', function () {
     // Expire video channel
     await wait(10000)
 
-    const search = 'http://localhost:9002/video-channels/channel1_server2'
+    const search = 'http://localhost:' + servers[ 1 ].port + '/video-channels/channel1_server2'
     await searchVideoChannel(servers[0].url, search, servers[0].accessToken)
 
     await waitJobs(servers)
 
-    const res = await getVideoChannelVideos(servers[0].url, servers[0].accessToken, 'channel1_server2@localhost:9002', 0, 5, '-createdAt')
+    const videoChannelName = 'channel1_server2@localhost:' + servers[ 1 ].port
+    const res = await getVideoChannelVideos(servers[0].url, servers[0].accessToken, videoChannelName, 0, 5, '-createdAt')
 
     expect(res.body.total).to.equal(2)
     expect(res.body.data[0].name).to.equal('video 2 server 2')
@@ -200,7 +202,8 @@ describe('Test ActivityPub video channels search', function () {
     // Expire video
     await wait(10000)
 
-    const res = await searchVideoChannel(servers[0].url, 'http://localhost:9002/video-channels/channel1_server2', servers[0].accessToken)
+    const search = 'http://localhost:' + servers[ 1 ].port + '/video-channels/channel1_server2'
+    const res = await searchVideoChannel(servers[0].url, search, servers[0].accessToken)
     expect(res.body.total).to.equal(0)
     expect(res.body.data).to.have.lengthOf(0)
   })
diff --git a/server/tests/api/search/search-activitypub-videos.ts b/server/tests/api/search/search-activitypub-videos.ts
index e8e2b5a64..dbfefadda 100644
--- a/server/tests/api/search/search-activitypub-videos.ts
+++ b/server/tests/api/search/search-activitypub-videos.ts
@@ -4,18 +4,17 @@ import * as chai from 'chai'
 import 'mocha'
 import {
   addVideoChannel,
+  cleanupTests,
   flushAndRunMultipleServers,
-  flushTests,
   getVideosList,
-  killallServers,
   removeVideo,
+  searchVideo,
   searchVideoWithToken,
   ServerInfo,
   setAccessTokensToServers,
   updateVideo,
   uploadVideo,
-  wait,
-  searchVideo, cleanupTests
+  wait
 } from '../../../../shared/extra-utils'
 import { waitJobs } from '../../../../shared/extra-utils/server/jobs'
 import { Video, VideoPrivacy } from '../../../../shared/models/videos'
@@ -49,7 +48,8 @@ describe('Test ActivityPub videos search', function () {
 
   it('Should not find a remote video', async function () {
     {
-      const res = await searchVideoWithToken(servers[ 0 ].url, 'http://localhost:9002/videos/watch/43', servers[ 0 ].accessToken)
+      const search = 'http://localhost:' + servers[1].port + '/videos/watch/43'
+      const res = await searchVideoWithToken(servers[ 0 ].url, search, servers[ 0 ].accessToken)
 
       expect(res.body.total).to.equal(0)
       expect(res.body.data).to.be.an('array')
@@ -58,7 +58,8 @@ describe('Test ActivityPub videos search', function () {
 
     {
       // Without token
-      const res = await searchVideo(servers[0].url, 'http://localhost:9002/videos/watch/' + videoServer2UUID)
+      const search = 'http://localhost:' + servers[1].port + '/videos/watch/' + videoServer2UUID
+      const res = await searchVideo(servers[0].url, search)
 
       expect(res.body.total).to.equal(0)
       expect(res.body.data).to.be.an('array')
@@ -67,7 +68,8 @@ describe('Test ActivityPub videos search', function () {
   })
 
   it('Should search a local video', async function () {
-    const res = await searchVideo(servers[0].url, 'http://localhost:9001/videos/watch/' + videoServer1UUID)
+    const search = 'http://localhost:' + servers[0].port + '/videos/watch/' + videoServer1UUID
+    const res = await searchVideo(servers[0].url, search)
 
     expect(res.body.total).to.equal(1)
     expect(res.body.data).to.be.an('array')
@@ -76,7 +78,8 @@ describe('Test ActivityPub videos search', function () {
   })
 
   it('Should search a remote video', async function () {
-    const res = await searchVideoWithToken(servers[0].url, 'http://localhost:9002/videos/watch/' + videoServer2UUID, servers[0].accessToken)
+    const search = 'http://localhost:' + servers[1].port + '/videos/watch/' + videoServer2UUID
+    const res = await searchVideoWithToken(servers[0].url, search, servers[0].accessToken)
 
     expect(res.body.total).to.equal(1)
     expect(res.body.data).to.be.an('array')
@@ -114,12 +117,13 @@ describe('Test ActivityPub videos search', function () {
     await wait(10000)
 
     // Will run refresh async
-    await searchVideoWithToken(servers[0].url, 'http://localhost:9002/videos/watch/' + videoServer2UUID, servers[0].accessToken)
+    const search = 'http://localhost:' + servers[1].port + '/videos/watch/' + videoServer2UUID
+    await searchVideoWithToken(servers[0].url, search, servers[0].accessToken)
 
     // Wait refresh
     await wait(5000)
 
-    const res = await searchVideoWithToken(servers[0].url, 'http://localhost:9002/videos/watch/' + videoServer2UUID, servers[0].accessToken)
+    const res = await searchVideoWithToken(servers[0].url, search, servers[0].accessToken)
     expect(res.body.total).to.equal(1)
     expect(res.body.data).to.have.lengthOf(1)
 
@@ -139,12 +143,13 @@ describe('Test ActivityPub videos search', function () {
     await wait(10000)
 
     // Will run refresh async
-    await searchVideoWithToken(servers[0].url, 'http://localhost:9002/videos/watch/' + videoServer2UUID, servers[0].accessToken)
+    const search = 'http://localhost:' + servers[1].port + '/videos/watch/' + videoServer2UUID
+    await searchVideoWithToken(servers[0].url, search, servers[0].accessToken)
 
     // Wait refresh
     await wait(5000)
 
-    const res = await searchVideoWithToken(servers[0].url, 'http://localhost:9002/videos/watch/' + videoServer2UUID, servers[0].accessToken)
+    const res = await searchVideoWithToken(servers[0].url, search, servers[0].accessToken)
     expect(res.body.total).to.equal(0)
     expect(res.body.data).to.have.lengthOf(0)
   })
diff --git a/server/tests/api/search/search-videos.ts b/server/tests/api/search/search-videos.ts
index 22d3a5951..92cc0dc71 100644
--- a/server/tests/api/search/search-videos.ts
+++ b/server/tests/api/search/search-videos.ts
@@ -4,16 +4,14 @@ import * as chai from 'chai'
 import 'mocha'
 import {
   advancedVideosSearch,
-  flushTests,
-  killallServers,
+  cleanupTests,
   flushAndRunServer,
+  immutableAssign,
   searchVideo,
   ServerInfo,
   setAccessTokensToServers,
   uploadVideo,
-  wait,
-  immutableAssign,
-  cleanupTests
+  wait
 } from '../../../../shared/extra-utils'
 
 const expect = chai.expect
diff --git a/server/tests/api/server/contact-form.ts b/server/tests/api/server/contact-form.ts
index ba51198b3..0a1c49ef5 100644
--- a/server/tests/api/server/contact-form.ts
+++ b/server/tests/api/server/contact-form.ts
@@ -24,11 +24,12 @@ describe('Test contact form', function () {
   before(async function () {
     this.timeout(30000)
 
-    await MockSmtpServer.Instance.collectEmails(emails)
+    const port = await MockSmtpServer.Instance.collectEmails(emails)
 
     const overrideConfig = {
       smtp: {
-        hostname: 'localhost'
+        hostname: 'localhost',
+        port
       }
     }
     server = await flushAndRunServer(1, overrideConfig)
diff --git a/server/tests/api/server/email.ts b/server/tests/api/server/email.ts
index bacdf1b1b..9ccb1c36f 100644
--- a/server/tests/api/server/email.ts
+++ b/server/tests/api/server/email.ts
@@ -7,18 +7,18 @@ import {
   askResetPassword,
   askSendVerifyEmail,
   blockUser,
-  createUser, removeVideoFromBlacklist,
+  cleanupTests,
+  createUser,
+  flushAndRunServer,
+  removeVideoFromBlacklist,
   reportVideoAbuse,
   resetPassword,
-  flushAndRunServer,
+  ServerInfo,
+  setAccessTokensToServers,
   unblockUser,
   uploadVideo,
   userLogin,
-  verifyEmail,
-  flushTests,
-  killallServers,
-  ServerInfo,
-  setAccessTokensToServers, cleanupTests
+  verifyEmail
 } from '../../../../shared/extra-utils'
 import { MockSmtpServer } from '../../../../shared/extra-utils/miscs/email'
 import { waitJobs } from '../../../../shared/extra-utils/server/jobs'
@@ -87,7 +87,7 @@ describe('Test emails', function () {
 
       const email = emails[0]
 
-      expect(email['from'][0]['name']).equal('localhost:9001')
+      expect(email['from'][0]['name']).equal('localhost:' + server.port)
       expect(email['from'][0]['address']).equal('test-admin@localhost')
       expect(email['to'][0]['address']).equal('user_1@example.com')
       expect(email['subject']).contains('password')
@@ -132,7 +132,7 @@ describe('Test emails', function () {
 
       const email = emails[1]
 
-      expect(email['from'][0]['name']).equal('localhost:9001')
+      expect(email['from'][0]['name']).equal('localhost:' + server.port)
       expect(email['from'][0]['address']).equal('test-admin@localhost')
       expect(email['to'][0]['address']).equal('admin1@example.com')
       expect(email['subject']).contains('abuse')
@@ -153,7 +153,7 @@ describe('Test emails', function () {
 
       const email = emails[2]
 
-      expect(email['from'][0]['name']).equal('localhost:9001')
+      expect(email['from'][0]['name']).equal('localhost:' + server.port)
       expect(email['from'][0]['address']).equal('test-admin@localhost')
       expect(email['to'][0]['address']).equal('user_1@example.com')
       expect(email['subject']).contains(' blocked')
@@ -171,7 +171,7 @@ describe('Test emails', function () {
 
       const email = emails[3]
 
-      expect(email['from'][0]['name']).equal('localhost:9001')
+      expect(email['from'][0]['name']).equal('localhost:' + server.port)
       expect(email['from'][0]['address']).equal('test-admin@localhost')
       expect(email['to'][0]['address']).equal('user_1@example.com')
       expect(email['subject']).contains(' unblocked')
@@ -191,7 +191,7 @@ describe('Test emails', function () {
 
       const email = emails[4]
 
-      expect(email['from'][0]['name']).equal('localhost:9001')
+      expect(email['from'][0]['name']).equal('localhost:' + server.port)
       expect(email['from'][0]['address']).equal('test-admin@localhost')
       expect(email['to'][0]['address']).equal('user_1@example.com')
       expect(email['subject']).contains(' blacklisted')
@@ -209,7 +209,7 @@ describe('Test emails', function () {
 
       const email = emails[5]
 
-      expect(email['from'][0]['name']).equal('localhost:9001')
+      expect(email['from'][0]['name']).equal('localhost:' + server.port)
       expect(email['from'][0]['address']).equal('test-admin@localhost')
       expect(email['to'][0]['address']).equal('user_1@example.com')
       expect(email['subject']).contains(' unblacklisted')
@@ -229,7 +229,7 @@ describe('Test emails', function () {
 
       const email = emails[6]
 
-      expect(email['from'][0]['name']).equal('localhost:9001')
+      expect(email['from'][0]['name']).equal('localhost:' + server.port)
       expect(email['from'][0]['address']).equal('test-admin@localhost')
       expect(email['to'][0]['address']).equal('user_1@example.com')
       expect(email['subject']).contains('Verify')
diff --git a/server/tests/api/server/follow-constraints.ts b/server/tests/api/server/follow-constraints.ts
index 4285a9e7a..ac3ff37f0 100644
--- a/server/tests/api/server/follow-constraints.ts
+++ b/server/tests/api/server/follow-constraints.ts
@@ -3,16 +3,16 @@
 import * as chai from 'chai'
 import 'mocha'
 import {
+  cleanupTests,
   doubleFollow,
+  flushAndRunMultipleServers,
   getAccountVideos,
   getVideo,
   getVideoChannelVideos,
   getVideoWithToken,
-  flushAndRunMultipleServers,
-  killallServers,
   ServerInfo,
   setAccessTokensToServers,
-  uploadVideo, cleanupTests
+  uploadVideo
 } from '../../../../shared/extra-utils'
 import { unfollow } from '../../../../shared/extra-utils/server/follows'
 import { userLogin } from '../../../../shared/extra-utils/users/login'
@@ -66,28 +66,30 @@ describe('Test follow constraints', function () {
       })
 
       it('Should list local account videos', async function () {
-        const res = await getAccountVideos(servers[0].url, undefined, 'root@localhost:9001', 0, 5)
+        const res = await getAccountVideos(servers[0].url, undefined, 'root@localhost:' + servers[0].port, 0, 5)
 
         expect(res.body.total).to.equal(1)
         expect(res.body.data).to.have.lengthOf(1)
       })
 
       it('Should list remote account videos', async function () {
-        const res = await getAccountVideos(servers[0].url, undefined, 'root@localhost:9002', 0, 5)
+        const res = await getAccountVideos(servers[0].url, undefined, 'root@localhost:' + servers[1].port, 0, 5)
 
         expect(res.body.total).to.equal(1)
         expect(res.body.data).to.have.lengthOf(1)
       })
 
       it('Should list local channel videos', async function () {
-        const res = await getVideoChannelVideos(servers[0].url, undefined, 'root_channel@localhost:9001', 0, 5)
+        const videoChannelName = 'root_channel@localhost:' + servers[0].port
+        const res = await getVideoChannelVideos(servers[0].url, undefined, videoChannelName, 0, 5)
 
         expect(res.body.total).to.equal(1)
         expect(res.body.data).to.have.lengthOf(1)
       })
 
       it('Should list remote channel videos', async function () {
-        const res = await getVideoChannelVideos(servers[0].url, undefined, 'root_channel@localhost:9002', 0, 5)
+        const videoChannelName = 'root_channel@localhost:' + servers[1].port
+        const res = await getVideoChannelVideos(servers[0].url, undefined, videoChannelName, 0, 5)
 
         expect(res.body.total).to.equal(1)
         expect(res.body.data).to.have.lengthOf(1)
@@ -104,28 +106,30 @@ describe('Test follow constraints', function () {
       })
 
       it('Should list local account videos', async function () {
-        const res = await getAccountVideos(servers[0].url, userAccessToken, 'root@localhost:9001', 0, 5)
+        const res = await getAccountVideos(servers[0].url, userAccessToken, 'root@localhost:' + servers[0].port, 0, 5)
 
         expect(res.body.total).to.equal(1)
         expect(res.body.data).to.have.lengthOf(1)
       })
 
       it('Should list remote account videos', async function () {
-        const res = await getAccountVideos(servers[0].url, userAccessToken, 'root@localhost:9002', 0, 5)
+        const res = await getAccountVideos(servers[0].url, userAccessToken, 'root@localhost:' + servers[1].port, 0, 5)
 
         expect(res.body.total).to.equal(1)
         expect(res.body.data).to.have.lengthOf(1)
       })
 
       it('Should list local channel videos', async function () {
-        const res = await getVideoChannelVideos(servers[0].url, userAccessToken, 'root_channel@localhost:9001', 0, 5)
+        const videoChannelName = 'root_channel@localhost:' + servers[0].port
+        const res = await getVideoChannelVideos(servers[0].url, userAccessToken, videoChannelName, 0, 5)
 
         expect(res.body.total).to.equal(1)
         expect(res.body.data).to.have.lengthOf(1)
       })
 
       it('Should list remote channel videos', async function () {
-        const res = await getVideoChannelVideos(servers[0].url, userAccessToken, 'root_channel@localhost:9002', 0, 5)
+        const videoChannelName = 'root_channel@localhost:' + servers[1].port
+        const res = await getVideoChannelVideos(servers[0].url, userAccessToken, videoChannelName, 0, 5)
 
         expect(res.body.total).to.equal(1)
         expect(res.body.data).to.have.lengthOf(1)
@@ -152,28 +156,30 @@ describe('Test follow constraints', function () {
       })
 
       it('Should list local account videos', async function () {
-        const res = await getAccountVideos(servers[0].url, undefined, 'root@localhost:9001', 0, 5)
+        const res = await getAccountVideos(servers[0].url, undefined, 'root@localhost:' + servers[0].port, 0, 5)
 
         expect(res.body.total).to.equal(1)
         expect(res.body.data).to.have.lengthOf(1)
       })
 
       it('Should not list remote account videos', async function () {
-        const res = await getAccountVideos(servers[0].url, undefined, 'root@localhost:9002', 0, 5)
+        const res = await getAccountVideos(servers[0].url, undefined, 'root@localhost:' + servers[1].port, 0, 5)
 
         expect(res.body.total).to.equal(0)
         expect(res.body.data).to.have.lengthOf(0)
       })
 
       it('Should list local channel videos', async function () {
-        const res = await getVideoChannelVideos(servers[0].url, undefined, 'root_channel@localhost:9001', 0, 5)
+        const videoChannelName = 'root_channel@localhost:' + servers[0].port
+        const res = await getVideoChannelVideos(servers[0].url, undefined, videoChannelName, 0, 5)
 
         expect(res.body.total).to.equal(1)
         expect(res.body.data).to.have.lengthOf(1)
       })
 
       it('Should not list remote channel videos', async function () {
-        const res = await getVideoChannelVideos(servers[0].url, undefined, 'root_channel@localhost:9002', 0, 5)
+        const videoChannelName = 'root_channel@localhost:' + servers[1].port
+        const res = await getVideoChannelVideos(servers[0].url, undefined, videoChannelName, 0, 5)
 
         expect(res.body.total).to.equal(0)
         expect(res.body.data).to.have.lengthOf(0)
@@ -190,28 +196,30 @@ describe('Test follow constraints', function () {
       })
 
       it('Should list local account videos', async function () {
-        const res = await getAccountVideos(servers[0].url, userAccessToken, 'root@localhost:9001', 0, 5)
+        const res = await getAccountVideos(servers[0].url, userAccessToken, 'root@localhost:' + servers[0].port, 0, 5)
 
         expect(res.body.total).to.equal(1)
         expect(res.body.data).to.have.lengthOf(1)
       })
 
       it('Should list remote account videos', async function () {
-        const res = await getAccountVideos(servers[0].url, userAccessToken, 'root@localhost:9002', 0, 5)
+        const res = await getAccountVideos(servers[0].url, userAccessToken, 'root@localhost:' + servers[1].port, 0, 5)
 
         expect(res.body.total).to.equal(1)
         expect(res.body.data).to.have.lengthOf(1)
       })
 
       it('Should list local channel videos', async function () {
-        const res = await getVideoChannelVideos(servers[0].url, userAccessToken, 'root_channel@localhost:9001', 0, 5)
+        const videoChannelName = 'root_channel@localhost:' + servers[0].port
+        const res = await getVideoChannelVideos(servers[0].url, userAccessToken, videoChannelName, 0, 5)
 
         expect(res.body.total).to.equal(1)
         expect(res.body.data).to.have.lengthOf(1)
       })
 
       it('Should list remote channel videos', async function () {
-        const res = await getVideoChannelVideos(servers[0].url, userAccessToken, 'root_channel@localhost:9002', 0, 5)
+        const videoChannelName = 'root_channel@localhost:' + servers[1].port
+        const res = await getVideoChannelVideos(servers[0].url, userAccessToken, videoChannelName, 0, 5)
 
         expect(res.body.total).to.equal(1)
         expect(res.body.data).to.have.lengthOf(1)
diff --git a/server/tests/api/server/follows-moderation.ts b/server/tests/api/server/follows-moderation.ts
index 2a3a4d5c8..fc20f8961 100644
--- a/server/tests/api/server/follows-moderation.ts
+++ b/server/tests/api/server/follows-moderation.ts
@@ -3,9 +3,9 @@
 import * as chai from 'chai'
 import 'mocha'
 import {
-  acceptFollower, cleanupTests,
+  acceptFollower,
+  cleanupTests,
   flushAndRunMultipleServers,
-  killallServers,
   ServerInfo,
   setAccessTokensToServers,
   updateCustomSubConfig
@@ -14,8 +14,8 @@ import {
   follow,
   getFollowersListPaginationAndSort,
   getFollowingListPaginationAndSort,
-  removeFollower,
-  rejectFollower
+  rejectFollower,
+  removeFollower
 } from '../../../../shared/extra-utils/server/follows'
 import { waitJobs } from '../../../../shared/extra-utils/server/jobs'
 import { ActorFollow } from '../../../../shared/models/actors'
@@ -29,8 +29,8 @@ async function checkServer1And2HasFollowers (servers: ServerInfo[], state = 'acc
 
     const follow = res.body.data[0] as ActorFollow
     expect(follow.state).to.equal(state)
-    expect(follow.follower.url).to.equal('http://localhost:9001/accounts/peertube')
-    expect(follow.following.url).to.equal('http://localhost:9002/accounts/peertube')
+    expect(follow.follower.url).to.equal('http://localhost:' + servers[0].port + 'accounts/peertube')
+    expect(follow.following.url).to.equal('http://localhost:' + servers[1].port + '/accounts/peertube')
   }
 
   {
@@ -39,8 +39,8 @@ async function checkServer1And2HasFollowers (servers: ServerInfo[], state = 'acc
 
     const follow = res.body.data[0] as ActorFollow
     expect(follow.state).to.equal(state)
-    expect(follow.follower.url).to.equal('http://localhost:9001/accounts/peertube')
-    expect(follow.following.url).to.equal('http://localhost:9002/accounts/peertube')
+    expect(follow.follower.url).to.equal('http://localhost:' + servers[0].port + 'accounts/peertube')
+    expect(follow.following.url).to.equal('http://localhost:' + servers[1].port + '/accounts/peertube')
   }
 }
 
@@ -151,7 +151,7 @@ describe('Test follows moderation', function () {
   })
 
   it('Should accept a follower', async function () {
-    await acceptFollower(servers[1].url, servers[1].accessToken, 'peertube@localhost:9001')
+    await acceptFollower(servers[1].url, servers[1].accessToken, 'peertube@localhost:' + servers[0].port)
     await waitJobs(servers)
 
     await checkServer1And2HasFollowers(servers)
@@ -178,7 +178,7 @@ describe('Test follows moderation', function () {
       expect(res.body.total).to.equal(1)
     }
 
-    await rejectFollower(servers[2].url, servers[2].accessToken, 'peertube@localhost:9001')
+    await rejectFollower(servers[2].url, servers[2].accessToken, 'peertube@localhost:' + servers[0].port)
     await waitJobs(servers)
 
     await checkServer1And2HasFollowers(servers)
diff --git a/server/tests/api/server/follows.ts b/server/tests/api/server/follows.ts
index 397093cdb..d4155667f 100644
--- a/server/tests/api/server/follows.ts
+++ b/server/tests/api/server/follows.ts
@@ -8,7 +8,6 @@ import { cleanupTests, completeVideoCheck } from '../../../../shared/extra-utils
 import {
   flushAndRunMultipleServers,
   getVideosList,
-  killallServers,
   ServerInfo,
   setAccessTokensToServers,
   uploadVideo
@@ -89,8 +88,8 @@ describe('Test follows', function () {
     res = await getFollowingListPaginationAndSort(servers[0].url, 1, 1, 'createdAt')
     follows = follows.concat(res.body.data)
 
-    const server2Follow = follows.find(f => f.following.host === 'localhost:9002')
-    const server3Follow = follows.find(f => f.following.host === 'localhost:9003')
+    const server2Follow = follows.find(f => f.following.host === 'localhost:' + servers[1].port)
+    const server3Follow = follows.find(f => f.following.host === 'localhost:' + servers[2].port)
 
     expect(server2Follow).to.not.be.undefined
     expect(server3Follow).to.not.be.undefined
@@ -100,12 +99,12 @@ describe('Test follows', function () {
 
   it('Should search followings on server 1', async function () {
     {
-      const res = await getFollowingListPaginationAndSort(servers[ 0 ].url, 0, 1, 'createdAt', ':9002')
+      const res = await getFollowingListPaginationAndSort(servers[ 0 ].url, 0, 1, 'createdAt', ':' + servers[1].port)
       const follows = res.body.data
 
       expect(res.body.total).to.equal(1)
       expect(follows.length).to.equal(1)
-      expect(follows[ 0 ].following.host).to.equal('localhost:9002')
+      expect(follows[ 0 ].following.host).to.equal('localhost:' + servers[1].port)
     }
 
     {
@@ -136,7 +135,7 @@ describe('Test follows', function () {
       expect(res.body.total).to.equal(1)
       expect(follows).to.be.an('array')
       expect(follows.length).to.equal(1)
-      expect(follows[0].follower.host).to.equal('localhost:9001')
+      expect(follows[0].follower.host).to.equal('localhost:' + servers[0].port)
     }
   })
 
@@ -147,7 +146,7 @@ describe('Test follows', function () {
 
       expect(res.body.total).to.equal(1)
       expect(follows.length).to.equal(1)
-      expect(follows[ 0 ].following.host).to.equal('localhost:9003')
+      expect(follows[ 0 ].following.host).to.equal('localhost:' + servers[2].port)
     }
 
     {
@@ -169,16 +168,16 @@ describe('Test follows', function () {
   })
 
   it('Should have the correct follows counts', async function () {
-    await expectAccountFollows(servers[0].url, 'peertube@localhost:9001', 0, 2)
-    await expectAccountFollows(servers[0].url, 'peertube@localhost:9002', 1, 0)
-    await expectAccountFollows(servers[0].url, 'peertube@localhost:9003', 1, 0)
+    await expectAccountFollows(servers[0].url, 'peertube@localhost:' + servers[0].port, 0, 2)
+    await expectAccountFollows(servers[0].url, 'peertube@localhost:' + servers[1].port, 1, 0)
+    await expectAccountFollows(servers[0].url, 'peertube@localhost:' + servers[2].port, 1, 0)
 
     // Server 2 and 3 does not know server 1 follow another server (there was not a refresh)
-    await expectAccountFollows(servers[1].url, 'peertube@localhost:9001', 0, 1)
-    await expectAccountFollows(servers[1].url, 'peertube@localhost:9002', 1, 0)
+    await expectAccountFollows(servers[1].url, 'peertube@localhost:' + servers[0].port, 0, 1)
+    await expectAccountFollows(servers[1].url, 'peertube@localhost:' + servers[1].port, 1, 0)
 
-    await expectAccountFollows(servers[2].url, 'peertube@localhost:9001', 0, 1)
-    await expectAccountFollows(servers[2].url, 'peertube@localhost:9003', 1, 0)
+    await expectAccountFollows(servers[2].url, 'peertube@localhost:' + servers[0].port, 0, 1)
+    await expectAccountFollows(servers[2].url, 'peertube@localhost:' + servers[2].port, 1, 0)
   })
 
   it('Should unfollow server 3 on server 1', async function () {
@@ -197,7 +196,7 @@ describe('Test follows', function () {
     expect(follows).to.be.an('array')
     expect(follows.length).to.equal(1)
 
-    expect(follows[0].following.host).to.equal('localhost:9002')
+    expect(follows[0].following.host).to.equal('localhost:' + servers[1].port)
   })
 
   it('Should not have server 1 as follower on server 3 anymore', async function () {
@@ -210,14 +209,14 @@ describe('Test follows', function () {
   })
 
   it('Should have the correct follows counts 2', async function () {
-    await expectAccountFollows(servers[0].url, 'peertube@localhost:9001', 0, 1)
-    await expectAccountFollows(servers[0].url, 'peertube@localhost:9002', 1, 0)
+    await expectAccountFollows(servers[0].url, 'peertube@localhost:' + servers[0].port, 0, 1)
+    await expectAccountFollows(servers[0].url, 'peertube@localhost:' + servers[1].port, 1, 0)
 
-    await expectAccountFollows(servers[1].url, 'peertube@localhost:9001', 0, 1)
-    await expectAccountFollows(servers[1].url, 'peertube@localhost:9002', 1, 0)
+    await expectAccountFollows(servers[1].url, 'peertube@localhost:' + servers[0].port, 0, 1)
+    await expectAccountFollows(servers[1].url, 'peertube@localhost:' + servers[1].port, 1, 0)
 
-    await expectAccountFollows(servers[2].url, 'peertube@localhost:9001', 0, 0)
-    await expectAccountFollows(servers[2].url, 'peertube@localhost:9003', 0, 0)
+    await expectAccountFollows(servers[2].url, 'peertube@localhost:' + servers[0].port, 0, 0)
+    await expectAccountFollows(servers[2].url, 'peertube@localhost:' + servers[2].port, 0, 0)
   })
 
   it('Should upload a video on server 2 and 3 and propagate only the video of server 2', async function () {
@@ -310,15 +309,15 @@ describe('Test follows', function () {
     })
 
     it('Should have the correct follows counts 3', async function () {
-      await expectAccountFollows(servers[0].url, 'peertube@localhost:9001', 0, 2)
-      await expectAccountFollows(servers[0].url, 'peertube@localhost:9002', 1, 0)
-      await expectAccountFollows(servers[0].url, 'peertube@localhost:9003', 1, 0)
+      await expectAccountFollows(servers[0].url, 'peertube@localhost:' + servers[0].port, 0, 2)
+      await expectAccountFollows(servers[0].url, 'peertube@localhost:' + servers[1].port, 1, 0)
+      await expectAccountFollows(servers[0].url, 'peertube@localhost:' + servers[2].port, 1, 0)
 
-      await expectAccountFollows(servers[1].url, 'peertube@localhost:9001', 0, 1)
-      await expectAccountFollows(servers[1].url, 'peertube@localhost:9002', 1, 0)
+      await expectAccountFollows(servers[1].url, 'peertube@localhost:' + servers[0].port, 0, 1)
+      await expectAccountFollows(servers[1].url, 'peertube@localhost:' + servers[1].port, 1, 0)
 
-      await expectAccountFollows(servers[2].url, 'peertube@localhost:9001', 0, 2)
-      await expectAccountFollows(servers[2].url, 'peertube@localhost:9003', 1, 0)
+      await expectAccountFollows(servers[2].url, 'peertube@localhost:' + servers[0].port, 0, 2)
+      await expectAccountFollows(servers[2].url, 'peertube@localhost:' + servers[2].port, 1, 0)
     })
 
     it('Should have propagated videos', async function () {
@@ -344,7 +343,7 @@ describe('Test follows', function () {
         support: 'my super support text',
         account: {
           name: 'root',
-          host: 'localhost:9003'
+          host: 'localhost:' + servers[2].port
         },
         isLocal,
         commentsEnabled: true,
@@ -384,7 +383,7 @@ describe('Test follows', function () {
       expect(comment.videoId).to.equal(video4.id)
       expect(comment.id).to.equal(comment.threadId)
       expect(comment.account.name).to.equal('root')
-      expect(comment.account.host).to.equal('localhost:9003')
+      expect(comment.account.host).to.equal('localhost:' + servers[2].port)
       expect(comment.totalReplies).to.equal(3)
       expect(dateIsValid(comment.createdAt as string)).to.be.true
       expect(dateIsValid(comment.updatedAt as string)).to.be.true
diff --git a/server/tests/api/server/handle-down.ts b/server/tests/api/server/handle-down.ts
index 19010dbc1..9a8bc08f9 100644
--- a/server/tests/api/server/handle-down.ts
+++ b/server/tests/api/server/handle-down.ts
@@ -70,7 +70,7 @@ describe('Test handle downs', function () {
     support: 'my super support text for server 1',
     account: {
       name: 'root',
-      host: 'localhost:9001'
+      host: 'localhost:' + servers[0].port
     },
     isLocal: false,
     duration: 10,
@@ -172,7 +172,7 @@ describe('Test handle downs', function () {
     const res = await getFollowersListPaginationAndSort(servers[0].url, 0, 2, 'createdAt')
     expect(res.body.data).to.be.an('array')
     expect(res.body.data).to.have.lengthOf(1)
-    expect(res.body.data[0].follower.host).to.equal('localhost:9003')
+    expect(res.body.data[0].follower.host).to.equal('localhost:' + servers[2].port)
   })
 
   it('Should not have pending/processing jobs anymore', async function () {
diff --git a/server/tests/api/travis-1.sh b/server/tests/api/travis-1.sh
index e4761d2f9..0673bb2bf 100644
--- a/server/tests/api/travis-1.sh
+++ b/server/tests/api/travis-1.sh
@@ -2,9 +2,9 @@
 
 set -eu
 
-files=$(find server/tests/api/check-params -type f | grep -v index.ts | xargs echo)
+notificationsFiles=$(find server/tests/api/notifications -type f | grep -v index.ts | xargs echo)
+searchFiles=$(find server/tests/api/search -type f | grep -v index.ts | xargs echo)
+checkParamFiles=$(find server/tests/api/check-params -type f | grep -v index.ts | xargs echo)
 
-MOCHA_PARALLEL=true mocha-parallel-tests --max-parallel 4 --timeout 5000 --exit --require ts-node/register --bail $files
-
-mocha --timeout 5000 --exit --require ts-node/register --bail server/tests/api/notifications/index.ts
-mocha --timeout 5000 --exit --require ts-node/register --bail server/tests/api/search/index.ts
+MOCHA_PARALLEL=true mocha-parallel-tests --max-parallel 4 --timeout 5000 --exit --require ts-node/register --bail \
+    $notificationsFiles $searchFiles $checkParamFiles
diff --git a/server/tests/api/users/blocklist.ts b/server/tests/api/users/blocklist.ts
index fbc57e0ef..c25e85ada 100644
--- a/server/tests/api/users/blocklist.ts
+++ b/server/tests/api/users/blocklist.ts
@@ -144,7 +144,7 @@ describe('Test blocklist', function () {
       })
 
       it('Should block a remote account', async function () {
-        await addAccountToAccountBlocklist(servers[ 0 ].url, servers[ 0 ].accessToken, 'user2@localhost:9002')
+        await addAccountToAccountBlocklist(servers[ 0 ].url, servers[ 0 ].accessToken, 'user2@localhost:' + servers[1].port)
       })
 
       it('Should hide its videos', async function () {
@@ -209,7 +209,7 @@ describe('Test blocklist', function () {
           expect(block.byAccount.name).to.equal('root')
           expect(block.blockedAccount.displayName).to.equal('user2')
           expect(block.blockedAccount.name).to.equal('user2')
-          expect(block.blockedAccount.host).to.equal('localhost:9002')
+          expect(block.blockedAccount.host).to.equal('localhost:' + servers[1].port)
         }
 
         {
@@ -223,12 +223,12 @@ describe('Test blocklist', function () {
           expect(block.byAccount.name).to.equal('root')
           expect(block.blockedAccount.displayName).to.equal('user1')
           expect(block.blockedAccount.name).to.equal('user1')
-          expect(block.blockedAccount.host).to.equal('localhost:9001')
+          expect(block.blockedAccount.host).to.equal('localhost:' + servers[0].port)
         }
       })
 
       it('Should unblock the remote account', async function () {
-        await removeAccountFromAccountBlocklist(servers[ 0 ].url, servers[ 0 ].accessToken, 'user2@localhost:9002')
+        await removeAccountFromAccountBlocklist(servers[ 0 ].url, servers[ 0 ].accessToken, 'user2@localhost:' + servers[1].port)
       })
 
       it('Should display its videos', async function () {
@@ -260,7 +260,7 @@ describe('Test blocklist', function () {
       })
 
       it('Should block a remote server', async function () {
-        await addServerToAccountBlocklist(servers[ 0 ].url, servers[ 0 ].accessToken, 'localhost:9002')
+        await addServerToAccountBlocklist(servers[ 0 ].url, servers[ 0 ].accessToken, 'localhost:' + servers[1].port)
       })
 
       it('Should hide its videos', async function () {
@@ -291,11 +291,11 @@ describe('Test blocklist', function () {
         const block = blocks[ 0 ]
         expect(block.byAccount.displayName).to.equal('root')
         expect(block.byAccount.name).to.equal('root')
-        expect(block.blockedServer.host).to.equal('localhost:9002')
+        expect(block.blockedServer.host).to.equal('localhost:' + servers[1].port)
       })
 
       it('Should unblock the remote server', async function () {
-        await removeServerFromAccountBlocklist(servers[ 0 ].url, servers[ 0 ].accessToken, 'localhost:9002')
+        await removeServerFromAccountBlocklist(servers[ 0 ].url, servers[ 0 ].accessToken, 'localhost:' + servers[1].port)
       })
 
       it('Should display its videos', function () {
@@ -324,7 +324,7 @@ describe('Test blocklist', function () {
       })
 
       it('Should block a remote account', async function () {
-        await addAccountToServerBlocklist(servers[ 0 ].url, servers[ 0 ].accessToken, 'user2@localhost:9002')
+        await addAccountToServerBlocklist(servers[ 0 ].url, servers[ 0 ].accessToken, 'user2@localhost:' + servers[1].port)
       })
 
       it('Should hide its videos', async function () {
@@ -387,7 +387,7 @@ describe('Test blocklist', function () {
           expect(block.byAccount.name).to.equal('peertube')
           expect(block.blockedAccount.displayName).to.equal('user2')
           expect(block.blockedAccount.name).to.equal('user2')
-          expect(block.blockedAccount.host).to.equal('localhost:9002')
+          expect(block.blockedAccount.host).to.equal('localhost:' + servers[1].port)
         }
 
         {
@@ -401,12 +401,12 @@ describe('Test blocklist', function () {
           expect(block.byAccount.name).to.equal('peertube')
           expect(block.blockedAccount.displayName).to.equal('user1')
           expect(block.blockedAccount.name).to.equal('user1')
-          expect(block.blockedAccount.host).to.equal('localhost:9001')
+          expect(block.blockedAccount.host).to.equal('localhost:' + servers[0].port)
         }
       })
 
       it('Should unblock the remote account', async function () {
-        await removeAccountFromServerBlocklist(servers[ 0 ].url, servers[ 0 ].accessToken, 'user2@localhost:9002')
+        await removeAccountFromServerBlocklist(servers[ 0 ].url, servers[ 0 ].accessToken, 'user2@localhost:' + servers[1].port)
       })
 
       it('Should display its videos', async function () {
@@ -446,7 +446,7 @@ describe('Test blocklist', function () {
       })
 
       it('Should block a remote server', async function () {
-        await addServerToServerBlocklist(servers[ 0 ].url, servers[ 0 ].accessToken, 'localhost:9002')
+        await addServerToServerBlocklist(servers[ 0 ].url, servers[ 0 ].accessToken, 'localhost:' + servers[1].port)
       })
 
       it('Should hide its videos', async function () {
@@ -478,11 +478,11 @@ describe('Test blocklist', function () {
         const block = blocks[ 0 ]
         expect(block.byAccount.displayName).to.equal('peertube')
         expect(block.byAccount.name).to.equal('peertube')
-        expect(block.blockedServer.host).to.equal('localhost:9002')
+        expect(block.blockedServer.host).to.equal('localhost:' + servers[1].port)
       })
 
       it('Should unblock the remote server', async function () {
-        await removeServerFromServerBlocklist(servers[ 0 ].url, servers[ 0 ].accessToken, 'localhost:9002')
+        await removeServerFromServerBlocklist(servers[ 0 ].url, servers[ 0 ].accessToken, 'localhost:' + servers[1].port)
       })
 
       it('Should list all videos', async function () {
diff --git a/server/tests/api/users/users-verification.ts b/server/tests/api/users/users-verification.ts
index 514acf2e7..3b37a26cf 100644
--- a/server/tests/api/users/users-verification.ts
+++ b/server/tests/api/users/users-verification.ts
@@ -30,11 +30,12 @@ describe('Test users account verification', function () {
   before(async function () {
     this.timeout(30000)
 
-    await MockSmtpServer.Instance.collectEmails(emails)
+    const port = await MockSmtpServer.Instance.collectEmails(emails)
 
     const overrideConfig = {
       smtp: {
-        hostname: 'localhost'
+        hostname: 'localhost',
+        port
       }
     }
     server = await flushAndRunServer(1, overrideConfig)
diff --git a/server/tests/api/videos/multiple-servers.ts b/server/tests/api/videos/multiple-servers.ts
index 68c1e9a8d..89904759a 100644
--- a/server/tests/api/videos/multiple-servers.ts
+++ b/server/tests/api/videos/multiple-servers.ts
@@ -9,18 +9,17 @@ import { VideoComment, VideoCommentThreadTree } from '../../../../shared/models/
 import {
   addVideoChannel,
   checkTmpIsEmpty,
-  checkVideoFilesWereRemoved, cleanupTests,
+  checkVideoFilesWereRemoved,
+  cleanupTests,
   completeVideoCheck,
   createUser,
   dateIsValid,
   doubleFollow,
   flushAndRunMultipleServers,
-  flushTests,
   getLocalVideos,
   getVideo,
   getVideoChannelsList,
   getVideosList,
-  killallServers,
   rateVideo,
   removeVideo,
   ServerInfo,
@@ -110,7 +109,7 @@ describe('Test multiple servers', function () {
       // All servers should have this video
       let publishedAt: string = null
       for (const server of servers) {
-        const isLocal = server.url === 'http://localhost:9001'
+        const isLocal = server.url === 'http://localhost:' + servers[0].port
         const checkAttributes = {
           name: 'my super name for server 1',
           category: 5,
@@ -122,7 +121,7 @@ describe('Test multiple servers', function () {
           originallyPublishedAt: '2019-02-10T13:38:14.449Z',
           account: {
             name: 'root',
-            host: 'localhost:9001'
+            host: 'localhost:' + servers[0].port
           },
           isLocal,
           publishedAt,
@@ -187,7 +186,7 @@ describe('Test multiple servers', function () {
 
       // All servers should have this video
       for (const server of servers) {
-        const isLocal = server.url === 'http://localhost:9002'
+        const isLocal = server.url === 'http://localhost:' + servers[1].port
         const checkAttributes = {
           name: 'my super name for server 2',
           category: 4,
@@ -198,7 +197,7 @@ describe('Test multiple servers', function () {
           support: 'my super support text for server 2',
           account: {
             name: 'user1',
-            host: 'localhost:9002'
+            host: 'localhost:' + servers[1].port
           },
           isLocal,
           commentsEnabled: true,
@@ -278,7 +277,7 @@ describe('Test multiple servers', function () {
 
       // All servers should have this video
       for (const server of servers) {
-        const isLocal = server.url === 'http://localhost:9003'
+        const isLocal = server.url === 'http://localhost:' + servers[2].port
         const res = await getVideosList(server.url)
 
         const videos = res.body.data
@@ -306,7 +305,7 @@ describe('Test multiple servers', function () {
           support: 'my super support text for server 3',
           account: {
             name: 'root',
-            host: 'localhost:9003'
+            host: 'localhost:' + servers[2].port
           },
           isLocal,
           duration: 5,
@@ -340,7 +339,7 @@ describe('Test multiple servers', function () {
           support: 'my super support text for server 3-2',
           account: {
             name: 'root',
-            host: 'localhost:9003'
+            host: 'localhost:' + servers[2].port
           },
           commentsEnabled: true,
           downloadEnabled: true,
@@ -646,7 +645,7 @@ describe('Test multiple servers', function () {
         const videoUpdated = videos.find(video => video.name === 'my super video updated')
         expect(!!videoUpdated).to.be.true
 
-        const isLocal = server.url === 'http://localhost:9003'
+        const isLocal = server.url === 'http://localhost:' + servers[2].port
         const checkAttributes = {
           name: 'my super video updated',
           category: 10,
@@ -658,7 +657,7 @@ describe('Test multiple servers', function () {
           originallyPublishedAt: '2019-02-11T13:38:14.449Z',
           account: {
             name: 'root',
-            host: 'localhost:9003'
+            host: 'localhost:' + servers[2].port
           },
           isLocal,
           duration: 5,
@@ -813,7 +812,7 @@ describe('Test multiple servers', function () {
           expect(comment).to.not.be.undefined
           expect(comment.inReplyToCommentId).to.be.null
           expect(comment.account.name).to.equal('root')
-          expect(comment.account.host).to.equal('localhost:9001')
+          expect(comment.account.host).to.equal('localhost:' + servers[0].port)
           expect(comment.totalReplies).to.equal(3)
           expect(dateIsValid(comment.createdAt as string)).to.be.true
           expect(dateIsValid(comment.updatedAt as string)).to.be.true
@@ -824,7 +823,7 @@ describe('Test multiple servers', function () {
           expect(comment).to.not.be.undefined
           expect(comment.inReplyToCommentId).to.be.null
           expect(comment.account.name).to.equal('root')
-          expect(comment.account.host).to.equal('localhost:9003')
+          expect(comment.account.host).to.equal('localhost:' + servers[2].port)
           expect(comment.totalReplies).to.equal(0)
           expect(dateIsValid(comment.createdAt as string)).to.be.true
           expect(dateIsValid(comment.updatedAt as string)).to.be.true
@@ -842,25 +841,25 @@ describe('Test multiple servers', function () {
         const tree: VideoCommentThreadTree = res2.body
         expect(tree.comment.text).equal('my super first comment')
         expect(tree.comment.account.name).equal('root')
-        expect(tree.comment.account.host).equal('localhost:9001')
+        expect(tree.comment.account.host).equal('localhost:' + servers[0].port)
         expect(tree.children).to.have.lengthOf(2)
 
         const firstChild = tree.children[0]
         expect(firstChild.comment.text).to.equal('my super answer to thread 1')
         expect(firstChild.comment.account.name).equal('root')
-        expect(firstChild.comment.account.host).equal('localhost:9002')
+        expect(firstChild.comment.account.host).equal('localhost:' + servers[1].port)
         expect(firstChild.children).to.have.lengthOf(1)
 
         childOfFirstChild = firstChild.children[0]
         expect(childOfFirstChild.comment.text).to.equal('my super answer to answer of thread 1')
         expect(childOfFirstChild.comment.account.name).equal('root')
-        expect(childOfFirstChild.comment.account.host).equal('localhost:9003')
+        expect(childOfFirstChild.comment.account.host).equal('localhost:' + servers[2].port)
         expect(childOfFirstChild.children).to.have.lengthOf(0)
 
         const secondChild = tree.children[1]
         expect(secondChild.comment.text).to.equal('my second answer to thread 1')
         expect(secondChild.comment.account.name).equal('root')
-        expect(secondChild.comment.account.host).equal('localhost:9003')
+        expect(secondChild.comment.account.host).equal('localhost:' + servers[2].port)
         expect(secondChild.children).to.have.lengthOf(0)
       }
     })
@@ -915,7 +914,7 @@ describe('Test multiple servers', function () {
           expect(comment).to.not.be.undefined
           expect(comment.inReplyToCommentId).to.be.null
           expect(comment.account.name).to.equal('root')
-          expect(comment.account.host).to.equal('localhost:9003')
+          expect(comment.account.host).to.equal('localhost:' + servers[2].port)
           expect(comment.totalReplies).to.equal(0)
           expect(dateIsValid(comment.createdAt as string)).to.be.true
           expect(dateIsValid(comment.updatedAt as string)).to.be.true
@@ -971,7 +970,7 @@ describe('Test multiple servers', function () {
         const res = await getVideosList(server.url)
         const video = res.body.data.find(v => v.name === 'minimum parameters')
 
-        const isLocal = server.url === 'http://localhost:9002'
+        const isLocal = server.url === 'http://localhost:' + servers[1].port
         const checkAttributes = {
           name: 'minimum parameters',
           category: null,
@@ -982,7 +981,7 @@ describe('Test multiple servers', function () {
           support: null,
           account: {
             name: 'root',
-            host: 'localhost:9002'
+            host: 'localhost:' + servers[1].port
           },
           isLocal,
           duration: 5,
diff --git a/server/tests/api/videos/services.ts b/server/tests/api/videos/services.ts
index e9ad947b2..38e232e5f 100644
--- a/server/tests/api/videos/services.ts
+++ b/server/tests/api/videos/services.ts
@@ -27,13 +27,13 @@ describe('Test services', function () {
   })
 
   it('Should have a valid oEmbed response', async function () {
-    const oembedUrl = 'http://localhost:9001/videos/watch/' + server.video.uuid
+    const oembedUrl = 'http://localhost:' + server.port + '/videos/watch/' + server.video.uuid
 
     const res = await getOEmbed(server.url, oembedUrl)
     const expectedHtml = '<iframe width="560" height="315" sandbox="allow-same-origin allow-scripts" ' +
-                         `src="http://localhost:9001/videos/embed/${server.video.uuid}" ` +
+                         `src="http://localhost:${server.port}/videos/embed/${server.video.uuid}" ` +
                          'frameborder="0" allowfullscreen></iframe>'
-    const expectedThumbnailUrl = 'http://localhost:9001/static/previews/' + server.video.uuid + '.jpg'
+    const expectedThumbnailUrl = 'http://localhost:' + server.port + '/static/previews/' + server.video.uuid + '.jpg'
 
     expect(res.body.html).to.equal(expectedHtml)
     expect(res.body.title).to.equal(server.video.name)
@@ -46,14 +46,14 @@ describe('Test services', function () {
   })
 
   it('Should have a valid oEmbed response with small max height query', async function () {
-    const oembedUrl = 'http://localhost:9001/videos/watch/' + server.video.uuid
+    const oembedUrl = 'http://localhost:' + server.port + '/videos/watch/' + server.video.uuid
     const format = 'json'
     const maxHeight = 50
     const maxWidth = 50
 
     const res = await getOEmbed(server.url, oembedUrl, format, maxHeight, maxWidth)
     const expectedHtml = '<iframe width="50" height="50" sandbox="allow-same-origin allow-scripts" ' +
-                         `src="http://localhost:9001/videos/embed/${server.video.uuid}" ` +
+                         `src="http://localhost:${server.port}/videos/embed/${server.video.uuid}" ` +
                          'frameborder="0" allowfullscreen></iframe>'
 
     expect(res.body.html).to.equal(expectedHtml)
diff --git a/server/tests/api/videos/single-server.ts b/server/tests/api/videos/single-server.ts
index 1f366b642..b0412f4df 100644
--- a/server/tests/api/videos/single-server.ts
+++ b/server/tests/api/videos/single-server.ts
@@ -47,7 +47,7 @@ describe('Test a single server', function () {
     support: 'my super support text',
     account: {
       name: 'root',
-      host: 'localhost:9001'
+      host: 'localhost:' + server.port
     },
     isLocal: true,
     duration: 5,
@@ -80,7 +80,7 @@ describe('Test a single server', function () {
     support: 'my super support text updated',
     account: {
       name: 'root',
-      host: 'localhost:9001'
+      host: 'localhost:' + server.port
     },
     isLocal: true,
     tags: [ 'tagup1', 'tagup2' ],
diff --git a/server/tests/api/videos/video-abuse.ts b/server/tests/api/videos/video-abuse.ts
index 7318497d5..a2f3ee161 100644
--- a/server/tests/api/videos/video-abuse.ts
+++ b/server/tests/api/videos/video-abuse.ts
@@ -9,7 +9,6 @@ import {
   flushAndRunMultipleServers,
   getVideoAbusesList,
   getVideosList,
-  killallServers,
   reportVideoAbuse,
   ServerInfo,
   setAccessTokensToServers,
@@ -90,7 +89,7 @@ describe('Test video abuses', function () {
     const abuse: VideoAbuse = res1.body.data[0]
     expect(abuse.reason).to.equal('my super bad reason')
     expect(abuse.reporterAccount.name).to.equal('root')
-    expect(abuse.reporterAccount.host).to.equal('localhost:9001')
+    expect(abuse.reporterAccount.host).to.equal('localhost:' + servers[0].port)
     expect(abuse.video.id).to.equal(servers[0].video.id)
 
     const res2 = await getVideoAbusesList(servers[1].url, servers[1].accessToken)
@@ -118,7 +117,7 @@ describe('Test video abuses', function () {
     const abuse1: VideoAbuse = res1.body.data[0]
     expect(abuse1.reason).to.equal('my super bad reason')
     expect(abuse1.reporterAccount.name).to.equal('root')
-    expect(abuse1.reporterAccount.host).to.equal('localhost:9001')
+    expect(abuse1.reporterAccount.host).to.equal('localhost:' + servers[0].port)
     expect(abuse1.video.id).to.equal(servers[0].video.id)
     expect(abuse1.state.id).to.equal(VideoAbuseState.PENDING)
     expect(abuse1.state.label).to.equal('Pending')
@@ -127,7 +126,7 @@ describe('Test video abuses', function () {
     const abuse2: VideoAbuse = res1.body.data[1]
     expect(abuse2.reason).to.equal('my super bad reason 2')
     expect(abuse2.reporterAccount.name).to.equal('root')
-    expect(abuse2.reporterAccount.host).to.equal('localhost:9001')
+    expect(abuse2.reporterAccount.host).to.equal('localhost:' + servers[0].port)
     expect(abuse2.video.id).to.equal(servers[1].video.id)
     expect(abuse2.state.id).to.equal(VideoAbuseState.PENDING)
     expect(abuse2.state.label).to.equal('Pending')
@@ -141,7 +140,7 @@ describe('Test video abuses', function () {
     abuseServer2 = res2.body.data[0]
     expect(abuseServer2.reason).to.equal('my super bad reason 2')
     expect(abuseServer2.reporterAccount.name).to.equal('root')
-    expect(abuseServer2.reporterAccount.host).to.equal('localhost:9001')
+    expect(abuseServer2.reporterAccount.host).to.equal('localhost:' + servers[0].port)
     expect(abuseServer2.state.id).to.equal(VideoAbuseState.PENDING)
     expect(abuseServer2.state.label).to.equal('Pending')
     expect(abuseServer2.moderationComment).to.be.null
diff --git a/server/tests/api/videos/video-channels.ts b/server/tests/api/videos/video-channels.ts
index 345e96f43..f09148404 100644
--- a/server/tests/api/videos/video-channels.ts
+++ b/server/tests/api/videos/video-channels.ts
@@ -213,7 +213,7 @@ describe('Test video channels', function () {
     this.timeout(10000)
 
     for (const server of servers) {
-      const channelURI = 'second_video_channel@localhost:9001'
+      const channelURI = 'second_video_channel@localhost:' + server.port
       const res1 = await getVideoChannelVideos(server.url, server.accessToken, channelURI, 0, 5)
       expect(res1.body.total).to.equal(1)
       expect(res1.body.data).to.be.an('array')
@@ -234,11 +234,11 @@ describe('Test video channels', function () {
     this.timeout(10000)
 
     for (const server of servers) {
-      const secondChannelURI = 'second_video_channel@localhost:9001'
+      const secondChannelURI = 'second_video_channel@localhost:' + server.port
       const res1 = await getVideoChannelVideos(server.url, server.accessToken, secondChannelURI, 0, 5)
       expect(res1.body.total).to.equal(0)
 
-      const channelURI = 'root_channel@localhost:9001'
+      const channelURI = 'root_channel@localhost:' + server.port
       const res2 = await getVideoChannelVideos(server.url, server.accessToken, channelURI, 0, 5)
       expect(res2.body.total).to.equal(1)
 
diff --git a/server/tests/api/videos/video-comments.ts b/server/tests/api/videos/video-comments.ts
index 22fd8c058..82182cc7c 100644
--- a/server/tests/api/videos/video-comments.ts
+++ b/server/tests/api/videos/video-comments.ts
@@ -66,8 +66,8 @@ describe('Test video comments', function () {
     expect(comment.videoId).to.equal(videoId)
     expect(comment.id).to.equal(comment.threadId)
     expect(comment.account.name).to.equal('root')
-    expect(comment.account.host).to.equal('localhost:9001')
-    expect(comment.account.url).to.equal('http://localhost:9001/accounts/root')
+    expect(comment.account.host).to.equal('localhost:' + server.port)
+    expect(comment.account.url).to.equal('http://localhost:' + server.port + '/accounts/root')
     expect(comment.totalReplies).to.equal(0)
     expect(dateIsValid(comment.createdAt as string)).to.be.true
     expect(dateIsValid(comment.updatedAt as string)).to.be.true
@@ -86,7 +86,7 @@ describe('Test video comments', function () {
     expect(comment.videoId).to.equal(videoId)
     expect(comment.id).to.equal(comment.threadId)
     expect(comment.account.name).to.equal('root')
-    expect(comment.account.host).to.equal('localhost:9001')
+    expect(comment.account.host).to.equal('localhost:' + server.port)
 
     await testImage(server.url, 'avatar-resized', comment.account.avatar.path, '.png')
 
diff --git a/server/tests/api/videos/video-hls.ts b/server/tests/api/videos/video-hls.ts
index 22031c18b..4565d0ebe 100644
--- a/server/tests/api/videos/video-hls.ts
+++ b/server/tests/api/videos/video-hls.ts
@@ -5,13 +5,12 @@ import 'mocha'
 import {
   checkDirectoryIsEmpty,
   checkSegmentHash,
-  checkTmpIsEmpty, cleanupTests,
+  checkTmpIsEmpty,
+  cleanupTests,
   doubleFollow,
   flushAndRunMultipleServers,
-  flushTests,
   getPlaylist,
   getVideo,
-  killallServers,
   removeVideo,
   ServerInfo,
   setAccessTokensToServers,
@@ -51,7 +50,7 @@ async function checkHlsPlaylist (servers: ServerInfo[], videoUUID: string) {
 
     {
       for (const resolution of resolutions) {
-        const res2 = await getPlaylist(`http://localhost:9001/static/streaming-playlists/hls/${videoUUID}/${resolution}.m3u8`)
+        const res2 = await getPlaylist(`http://localhost:${server.port}/static/streaming-playlists/hls/${videoUUID}/${resolution}.m3u8`)
 
         const subPlaylist = res2.text
         expect(subPlaylist).to.contain(`${videoUUID}-${resolution}-fragmented.mp4`)
@@ -59,7 +58,7 @@ async function checkHlsPlaylist (servers: ServerInfo[], videoUUID: string) {
     }
 
     {
-      const baseUrl = 'http://localhost:9001/static/streaming-playlists/hls'
+      const baseUrl = 'http://localhost:' + server.port + '/static/streaming-playlists/hls'
 
       for (const resolution of resolutions) {
         await checkSegmentHash(baseUrl, baseUrl, videoUUID, resolution, hlsPlaylist)
diff --git a/server/tests/api/videos/video-transcoder.ts b/server/tests/api/videos/video-transcoder.ts
index 3cd43e99b..45a8c09f0 100644
--- a/server/tests/api/videos/video-transcoder.ts
+++ b/server/tests/api/videos/video-transcoder.ts
@@ -6,21 +6,21 @@ import { omit } from 'lodash'
 import { getMaxBitrate, VideoDetails, VideoResolution, VideoState } from '../../../../shared/models/videos'
 import { audio, getVideoFileBitrate, getVideoFileFPS, getVideoFileResolution } from '../../../helpers/ffmpeg-utils'
 import {
-  buildAbsoluteFixturePath, cleanupTests,
+  buildAbsoluteFixturePath,
+  cleanupTests,
   doubleFollow,
   flushAndRunMultipleServers,
   generateHighBitrateVideo,
   getMyVideos,
   getVideo,
   getVideosList,
-  killallServers,
   root,
   ServerInfo,
   setAccessTokensToServers,
   uploadVideo,
   webtorrentAdd
 } from '../../../../shared/extra-utils'
-import { extname, join } from 'path'
+import { join } from 'path'
 import { waitJobs } from '../../../../shared/extra-utils/server/jobs'
 import { VIDEO_TRANSCODING_FPS } from '../../../../server/initializers/constants'
 
@@ -121,7 +121,7 @@ describe('Test video transcoding', function () {
 
       expect(videoDetails.files).to.have.lengthOf(4)
 
-      const path = join(root(), 'test2', 'videos', video.uuid + '-240.mp4')
+      const path = join(root(), 'test' + servers[1].internalServerNumber, 'videos', video.uuid + '-240.mp4')
       const probe = await audio.get(path)
 
       if (probe.audioStream) {
@@ -152,7 +152,7 @@ describe('Test video transcoding', function () {
       const videoDetails: VideoDetails = res2.body
 
       expect(videoDetails.files).to.have.lengthOf(4)
-      const path = join(root(), 'test2', 'videos', video.uuid + '-240.mp4')
+      const path = join(root(), 'test' + servers[1].internalServerNumber, 'videos', video.uuid + '-240.mp4')
       const probe = await audio.get(path)
       expect(probe).to.not.have.property('audioStream')
     }
@@ -179,7 +179,7 @@ describe('Test video transcoding', function () {
       expect(videoDetails.files).to.have.lengthOf(4)
       const fixturePath = buildAbsoluteFixturePath(videoAttributes.fixture)
       const fixtureVideoProbe = await audio.get(fixturePath)
-      const path = join(root(), 'test2', 'videos', video.uuid + '-240.mp4')
+      const path = join(root(), 'test' + servers[1].internalServerNumber, 'videos', video.uuid + '-240.mp4')
       const videoProbe = await audio.get(path)
       if (videoProbe.audioStream && fixtureVideoProbe.audioStream) {
         const toOmit = [ 'max_bit_rate', 'duration', 'duration_ts', 'nb_frames', 'start_time', 'start_pts' ]
@@ -216,13 +216,13 @@ describe('Test video transcoding', function () {
       expect(videoDetails.files[ 3 ].fps).to.be.below(31)
 
       for (const resolution of [ '240', '360', '480' ]) {
-        const path = join(root(), 'test2', 'videos', video.uuid + '-' + resolution + '.mp4')
+        const path = join(root(), 'test' + servers[1].internalServerNumber, 'videos', video.uuid + '-' + resolution + '.mp4')
         const fps = await getVideoFileFPS(path)
 
         expect(fps).to.be.below(31)
       }
 
-      const path = join(root(), 'test2', 'videos', video.uuid + '-720.mp4')
+      const path = join(root(), 'test' + servers[1].internalServerNumber, 'videos', video.uuid + '-720.mp4')
       const fps = await getVideoFileFPS(path)
 
       expect(fps).to.be.above(58).and.below(62)
@@ -310,7 +310,7 @@ describe('Test video transcoding', function () {
       const video = res.body.data.find(v => v.name === videoAttributes.name)
 
       for (const resolution of ['240', '360', '480', '720', '1080']) {
-        const path = join(root(), 'test2', 'videos', video.uuid + '-' + resolution + '.mp4')
+        const path = join(root(), 'test' + servers[1].internalServerNumber, 'videos', video.uuid + '-' + resolution + '.mp4')
         const bitrate = await getVideoFileBitrate(path)
         const fps = await getVideoFileFPS(path)
         const resolution2 = await getVideoFileResolution(path)
diff --git a/server/tests/cli/optimize-old-videos.ts b/server/tests/cli/optimize-old-videos.ts
index 5e12c0089..3822fca42 100644
--- a/server/tests/cli/optimize-old-videos.ts
+++ b/server/tests/cli/optimize-old-videos.ts
@@ -8,14 +8,16 @@ import {
   doubleFollow,
   execCLI,
   flushAndRunMultipleServers,
-  flushTests, generateHighBitrateVideo,
+  generateHighBitrateVideo,
   getEnvCli,
   getVideo,
   getVideosList,
-  killallServers, root,
+  root,
   ServerInfo,
   setAccessTokensToServers,
-  uploadVideo, viewVideo, wait
+  uploadVideo,
+  viewVideo,
+  wait
 } from '../../../shared/extra-utils'
 import { waitJobs } from '../../../shared/extra-utils/server/jobs'
 import { getVideoFileBitrate, getVideoFileFPS, getVideoFileResolution } from '../../helpers/ffmpeg-utils'
@@ -102,7 +104,7 @@ describe('Test optimize old videos', function () {
 
         expect(file.size).to.be.below(5000000)
 
-        const path = join(root(), 'test1', 'videos', video.uuid + '-' + file.resolution.id + '.mp4')
+        const path = join(root(), 'test' + servers[0].internalServerNumber, 'videos', video.uuid + '-' + file.resolution.id + '.mp4')
         const bitrate = await getVideoFileBitrate(path)
         const fps = await getVideoFileFPS(path)
         const resolution = await getVideoFileResolution(path)
diff --git a/shared/extra-utils/server/servers.ts b/shared/extra-utils/server/servers.ts
index ed41bfa48..3992735e1 100644
--- a/shared/extra-utils/server/servers.ts
+++ b/shared/extra-utils/server/servers.ts
@@ -284,7 +284,7 @@ function cleanupTests (servers: ServerInfo[]) {
 }
 
 async function waitUntilLog (server: ServerInfo, str: string, count = 1) {
-  const logfile = join(root(), 'test' + server.serverNumber, 'logs/peertube.log')
+  const logfile = join(root(), 'test' + server.internalServerNumber, 'logs/peertube.log')
 
   while (true) {
     const buf = await readFile(logfile)
diff --git a/shared/extra-utils/users/user-notifications.ts b/shared/extra-utils/users/user-notifications.ts
index 495ff80d9..f7de542bf 100644
--- a/shared/extra-utils/users/user-notifications.ts
+++ b/shared/extra-utils/users/user-notifications.ts
@@ -380,7 +380,7 @@ async function checkNewCommentOnMyVideo (base: CheckerBaseParams, uuid: string,
     }
   }
 
-  const commentUrl = `http://localhost:9001/videos/watch/${uuid};threadId=${threadId}`
+  const commentUrl = `http://localhost:${base.server.port}/videos/watch/${uuid};threadId=${threadId}`
   function emailFinder (email: object) {
     return email[ 'text' ].indexOf(commentUrl) !== -1
   }