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Add docs for pleroma_ctl database prune_objects --prune-orphaned-activities

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I also added extra info on VACUUM FULL
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ilja 2023-01-23 09:07:44 +01:00
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docs/docs/administration/CLI_tasks/database.md
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@ -21,7 +21,6 @@ Replaces embedded objects with references to them in the `objects` table. Only n
mix pleroma.database remove_embedded_objects [option ...]
```
### Options
- `--vacuum` - run `VACUUM FULL` after the embedded objects are replaced with their references
@ -29,8 +28,11 @@ Replaces embedded objects with references to them in the `objects` table. Only n
This will prune remote posts older than 90 days (configurable with [`config :pleroma, :instance, remote_post_retention_days`](../../configuration/cheatsheet.md#instance)) from the database. Pruned posts may be refetched in some cases.
!!! note
The disk space will only be reclaimed after a proper vacuum. By default Postgresql does this for you on a regular basis, but if your instance has been running for a long time and there are many rows deleted, it may be advantageous to use `VACUUM FULL` (e.g. by using the `--vacuum` option).
!!! danger
The disk space will only be reclaimed after `VACUUM FULL`. You may run out of disk space during the execution of the task or vacuuming if you don't have about 1/3rds of the database size free.
You may run out of disk space during the execution of the task or vacuuming if you don't have about 1/3rds of the database size free. Vacuum causes a substantial increase in I/O traffic, and may lead to a degraded experience while it is running.
=== "OTP"
@ -46,9 +48,10 @@ This will prune remote posts older than 90 days (configurable with [`config :ple
### Options
- `--keep-threads` - don't prune posts when they are part of a thread where at least one post has seen local interaction (e.g. one of the posts is a local post, or is favourited by a local user, or has been repeated by a local user...)
- `--keep-non-public` - keep non-public posts like DM's and followers-only, even if they are remote
- `--vacuum` - run `VACUUM FULL` after the objects are pruned
- `--keep-threads` - Don't prune posts when they are part of a thread where at least one post has seen local interaction (e.g. one of the posts is a local post, or is favourited by a local user, or has been repeated by a local user...). It also wont delete posts when at least one of the posts in that thread is kept (e.g. because one of the posts has seen recent activity).
- `--keep-non-public` - Keep non-public posts like DM's and followers-only, even if they are remote.
- `--prune-orphaned-activities` - Also prune orphaned activities afterwards. Activities are things like Like, Create, Announce, Flag (aka reports)... They can significantly help reduce the database size.
- `--vacuum` - Run `VACUUM FULL` after the objects are pruned. This should not be used on a regular basis, but is useful if your instance has been running for a long time before pruning.
## Create a conversation for all existing DMs
@ -96,6 +99,9 @@ Can be safely re-run
## Vacuum the database
!!! note
By default Postgresql has an autovacuum deamon running. While the tasks described here can help in some cases, they shouldn't be needed on a regular basis. See [the Postgresql docs on vacuuming](https://www.postgresql.org/docs/current/sql-vacuum.html) for more information on this.
### Analyze
Running an `analyze` vacuum job can improve performance by updating statistics used by the query planner. **It is safe to cancel this.**