mirror of
https://mau.dev/maunium/synapse.git
synced 2024-10-01 01:36:05 -04:00
98 lines
3.0 KiB
ReStructuredText
98 lines
3.0 KiB
ReStructuredText
Using Postgres
|
|
--------------
|
|
|
|
Set up client
|
|
=============
|
|
|
|
Postgres support depends on the postgres python connector ``psycopg2``. In the
|
|
virtual env::
|
|
|
|
sudo apt-get install libpq-dev
|
|
pip install psycopg2
|
|
|
|
|
|
Synapse config
|
|
==============
|
|
|
|
When you are ready to start using PostgreSQL, add the following line to your
|
|
config file::
|
|
|
|
database_config: <db_config_file>
|
|
|
|
Where ``<db_config_file>`` is the file name that points to a yaml file of the
|
|
following form::
|
|
|
|
name: psycopg2
|
|
args:
|
|
user: <user>
|
|
password: <pass>
|
|
database: <db>
|
|
host: <host>
|
|
cp_min: 5
|
|
cp_max: 10
|
|
|
|
All key, values in ``args`` are passed to the ``psycopg2.connect(..)``
|
|
function, except keys beginning with ``cp_``, which are consumed by the twisted
|
|
adbapi connection pool.
|
|
|
|
|
|
Porting from SQLite
|
|
===================
|
|
|
|
Overview
|
|
~~~~~~~~
|
|
|
|
The script ``port_from_sqlite_to_postgres.py`` allows porting an existing
|
|
synapse server backed by SQLite to using PostgreSQL. This is done in as a two
|
|
phase process:
|
|
|
|
1. Copy the existing SQLite database to a separate location (while the server
|
|
is down) and running the port script against that offline database.
|
|
2. Shut down the server. Rerun the port script to port any data that has come
|
|
in since taking the first snapshot. Restart server against the PostgreSQL
|
|
database.
|
|
|
|
The port script is designed to be run repeatedly against newer snapshots of the
|
|
SQLite database file. This makes it safe to repeat step 1 if there was a delay
|
|
between taking the previous snapshot and being ready to do step 2.
|
|
|
|
It is safe to at any time kill the port script and restart it.
|
|
|
|
Using the port script
|
|
~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
Firstly, shut down the currently running synapse server and copy its database
|
|
file (typically ``homeserver.db``) to another location. Once the copy is
|
|
complete, restart synapse. For instance::
|
|
|
|
./synctl stop
|
|
cp homeserver.db homeserver.db.snapshot
|
|
./synctl start
|
|
|
|
Assuming your database config file (as described in the section *Synapse
|
|
config*) is named ``database_config.yaml`` and the SQLite snapshot is at
|
|
``homeserver.db.snapshot`` then simply run::
|
|
|
|
python scripts/port_from_sqlite_to_postgres.py \
|
|
--sqlite-database homeserver.db.snapshot \
|
|
--postgres-config database_config.yaml
|
|
|
|
The flag ``--curses`` displays a coloured curses progress UI.
|
|
|
|
If the script took a long time to complete, or time has otherwise passed since
|
|
the original snapshot was taken, repeat the previous steps with a newer
|
|
snapshot.
|
|
|
|
To complete the conversion shut down the synapse server and run the port
|
|
script one last time, e.g. if the SQLite database is at ``homeserver.db``
|
|
run::
|
|
|
|
python scripts/port_from_sqlite_to_postgres.py \
|
|
--sqlite-database homeserver.db \
|
|
--postgres-config database_config.yaml
|
|
|
|
Once that has completed, change the synapse config to point at the PostgreSQL
|
|
database configuration file using the ``database_config`` parameter (see
|
|
`Synapse Config`_) and restart synapse. Synapse should now be running against
|
|
PostgreSQL.
|