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Merge pull request #495 from eMPee584/add-adminer-to-synapse-docs

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Document how to administer synapse database via tunneled web-frontend
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Slavi Pantaleev 2020-05-11 11:09:32 +03:00 committed by GitHub
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@ -14,6 +14,7 @@ Table of contents:
- [Purging old data with the Purge History API](#purging-old-data-with-the-purge-history-api)
- [Compressing state with rust-synapse-compress-state](#compressing-state-with-rust-synapse-compress-state)
- [Browse and manipulate the database](#browse-and-manipulate-the-database), for when you really need to take matters into your own hands
## Purging unused data with synapse-janitor
@ -76,3 +77,23 @@ Don't forget that disk space only ever gets released after a [`FULL` Postgres `V
Unfortunately, at this time the playbook can't help you run this **experimental tool**.
Since it's also experimental, you may wish to stay away from it, or at least [make Postgres backups](./maintenance-postgres.md#backing-up-postgresql) first.
## Browse and manipulate the database
When the [matrix admin API](https://github.com/matrix-org/synapse/tree/master/docs/admin_api) and the other tools do not provide a more convenient way, having a look at synapse's postgresql database can satisfy a lot of admins' needs.
First, set up an SSH tunnel to your matrix server (skip if it is your local machine):
```
# you may replace 1799 with an arbitrary port unbound on both machines
ssh -L 1799:localhost:1799 matrix.DOMAIN
```
Then start up an ephemeral [adminer](https://www.adminer.org/) container on the Matrix server, connecting it to the `matrix` network and linking the postgresql container:
```
docker run --rm --publish 1799:8080 --link matrix-postgres --net matrix adminer
```
You should then be able to browse the adminer database administration GUI at http://localhost:1799/ after entering your DB credentials (found in the `host_vars` or on the server in `{{matrix_synapse_config_dir_path}}/homeserver.yaml` under `database.args`)
⚠️ Be **very careful** with this, there is **no undo** for impromptu DB operations.