47 lines
1.5 KiB
Markdown
47 lines
1.5 KiB
Markdown
Using the synapse manhole
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=========================
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The "manhole" allows server administrators to access a Python shell on a running
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Synapse installation. This is a very powerful mechanism for administration and
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debugging.
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To enable it, first uncomment the `manhole` listener configuration in
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`homeserver.yaml`:
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```yaml
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listeners:
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- port: 9000
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bind_addresses: ['::1', '127.0.0.1']
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type: manhole
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```
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(`bind_addresses` in the above is important: it ensures that access to the
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manhole is only possible for local users).
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Note that this will give administrative access to synapse to **all users** with
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shell access to the server. It should therefore **not** be enabled in
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environments where untrusted users have shell access.
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Then restart synapse, and point an ssh client at port 9000 on localhost, using
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the username `matrix`:
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```bash
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ssh -p9000 matrix@localhost
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```
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The password is `rabbithole`.
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This gives a Python REPL in which `hs` gives access to the
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`synapse.server.HomeServer` object - which in turn gives access to many other
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parts of the process.
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Note that any call which returns a coroutine will need to be wrapped in `ensureDeferred`.
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As a simple example, retrieving an event from the database:
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```pycon
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>>> from twisted.internet import defer
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>>> defer.ensureDeferred(hs.get_datastore().get_event('$1416420717069yeQaw:matrix.org'))
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<Deferred at 0x7ff253fc6998 current result: <FrozenEvent event_id='$1416420717069yeQaw:matrix.org', type='m.room.create', state_key=''>>
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```
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