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Decrease default Synapse logging level
Also discussed previously in #213 (Github Pull Request). shared-secret-auth and rest-auth logging is still at `INFO` intentionally, as user login events seem more important to keep. Those modules typically don't spam as much.
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CHANGELOG.md
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CHANGELOG.md
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# 2019-08-03
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## Synapse logging level has been reduced to WARNING
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After [some discussion in our support room](https://matrix.to/#/!PukFFdIcHgtaaHZflT:devture.com/$156476852524179TBeKy:matrix.org?via=devture.com&via=matrix.org&via=librem.one), we've decided to change the default logging level for Synapse from `INFO` to `WARNING`.
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This greatly reduces the number of log messages that are being logged, leading to:
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- much less disk space dedicated to Synapse and thus, logs kept for longer
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- easier to find some important `WARNING`, `ERROR` and `CRITICAL` messages, as they're not longer buried in thousands of non-important `INFO` messages
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If you'd like to track down an issue, you [can always increase the logging level as described here](./docs/maintenance-and-troubleshooting.md#increasing-synapse-logging).
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# 2019-07-08
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## Synapse Maintenance docs and synapse-janitor support are available
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@ -16,6 +16,24 @@ You can see the logs by using journalctl. Example:
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sudo journalctl -fu matrix-synapse
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```
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## Increasing Synapse logging
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Because the [Synapse](https://github.com/matrix-org/synapse) Matrix server is originally very chatty when it comes to logging, we intentionally reduce its [logging level](https://docs.python.org/3/library/logging.html#logging-levels) from `INFO` to `WARNING`.
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If you'd like to debug an issue or [report a Synapse bug](https://github.com/matrix-org/synapse/issues/new/choose) to the developers, it'd be better if you temporarily increasing the logging level to `INFO` or even `DEBUG`.
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Example configuration (`inventory/host_vars/matrix.DOMAIN/vars.yml`):
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```yaml
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matrix_synapse_log_level: "DEBUG"
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matrix_synapse_storage_sql_log_level: "DEBUG"
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matrix_synapse_root_log_level: "DEBUG"
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```
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Re-run the playbook after making these configuration changes.
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## Postgres
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See the dedicated [PostgreSQL Maintenance](maintenance-postgres.md) documentation page.
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@ -77,9 +77,9 @@ matrix_synapse_tmp_directory_size_mb: "{{ matrix_synapse_max_upload_size_mb * 50
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# Possible options are defined here https://docs.python.org/3/library/logging.html#logging-levels
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# warning: setting log level to DEBUG will make synapse log sensitive information such
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# as access tokens
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matrix_synapse_log_level: "INFO"
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matrix_synapse_storage_sql_log_level: "INFO"
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matrix_synapse_root_log_level: "INFO"
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matrix_synapse_log_level: "WARNING"
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matrix_synapse_storage_sql_log_level: "WARNING"
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matrix_synapse_root_log_level: "WARNING"
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# Rate limits
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matrix_synapse_rc_message:
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