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Randomize matrix-synapse-auto-compressor.timer start with a RandomizedDelaySec (defaults to 6h)

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Slavi Pantaleev 2025-03-29 10:34:37 +02:00
parent e1a2d427c6
commit e8c9a0e410
3 changed files with 11 additions and 2 deletions
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5
docs/configuring-playbook-synapse-auto-compressor.md
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@ -24,12 +24,15 @@ matrix_synapse_auto_compressor_enabled: true
### Edit the schedule (optional)
By default the task will run 0 a.m. every day based on the `matrix_synapse_auto_compressor_schedule` variable. It is defined in the format of systemd timer calendar.
By default the task will around 0 a.m. every day based on the `matrix_synapse_auto_compressor_schedule` variable with a randomized delay of 6 hours (controlled by the `matrix_synapse_auto_compressor_schedule_randomized_delay_sec` variable). It is defined in the format of systemd timer calendar.
To edit the schedule, add the following configuration to your `vars.yml` file (adapt to your needs):
```yaml
matrix_synapse_auto_compressor_schedule: "*-*-* 00:00:00"
# Consider adjusting the randomized delay or setting it to 0 to disable randomized delays.
# matrix_synapse_auto_compressor_schedule_randomized_delay_sec: 6h
```
### Extending the configuration

7
roles/custom/matrix-synapse-auto-compressor/defaults/main.yml
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@ -64,9 +64,14 @@ matrix_synapse_auto_compressor_database_name: 'synapse'
# connection string to synapse database (postgres only)
matrix_synapse_auto_compressor_synapse_database: 'postgres://{{ matrix_synapse_auto_compressor_database_username | urlencode() }}:{{ matrix_synapse_auto_compressor_database_password | urlencode() }}@{{ matrix_synapse_auto_compressor_database_hostname }}:{{ matrix_synapse_auto_compressor_database_port }}/{{ matrix_synapse_auto_compressor_database_name }}'
# systemd calendar configuration for the compressor job
# Controls the `OnCalendar` configuration for the compressor job.
# Also see: `matrix_synapse_auto_compressor_schedule_randomized_delay_sec`
matrix_synapse_auto_compressor_schedule: "*-*-* 00:00:00"
# The `RandomizedDelaySec` delay (in seconds or as a systemd time string) to randomize the `OnCalendar` start time (`matrix_synapse_auto_compressor_schedule`) of the compressor job.
# This can be set to 0 to disable randomized delays.
matrix_synapse_auto_compressor_schedule_randomized_delay_sec: 6h
# The number of state groups to work on at once.
# All of the entries from state_groups_state are requested from the database for state groups that are worked on.
# Therefore small chunk sizes may be needed on machines with low memory.

1
roles/custom/matrix-synapse-auto-compressor/templates/matrix-synapse-auto-compressor.timer.j2
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@ -11,6 +11,7 @@ Description=Synapse State Auto Compressor Timer
[Timer]
Unit=matrix-synapse-auto-compressor.service
OnCalendar={{ matrix_synapse_auto_compressor_schedule }}
RandomizedDelaySec={{ matrix_synapse_auto_compressor_schedule_randomized_delay_sec }}
[Install]
WantedBy=timers.target