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54 lines
3.3 KiB
Markdown
54 lines
3.3 KiB
Markdown
# Setting up synapse-usage-exporter (optional)
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[synapse-usage-exporter](https://github.com/loelkes/synapse-usage-exporter) allows you to export the usage statistics of a Synapse homeserver to this container service and for the collected metrics to later be scraped by Prometheus.
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Synapse does not include usage statistics in its Prometheus metrics. They can be reported to an HTTP `PUT` endpoint 5 minutes after startup and from then on at a fixed interval of once every three hours. This role integrates a simple [Flask](https://flask.palletsprojects.com) project that offers an HTTP `PUT` endpoint and holds the most recent received record available to be scraped by Prometheus.
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Enabling this service will automatically:
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- install the synapse-usage-exporter service
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- re-configure Synapse to push (via HTTP `PUT`) usage statistics information to synapse-usage-exporter
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- re-configure [Prometheus](./configuring-playbook-prometheus-grafana.md) (if Prometheus is enabled), to periodically scrape metrics from synapse-usage-exporter
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- add a new [Grafana](./configuring-playbook-prometheus-grafana.md) dashboard (if Grafana is enabled) containing Synapse usage statistics
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## Adjusting the playbook configuration
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To enable synapse-usage-exporter, add the following configuration to your `inventory/host_vars/matrix.example.com/vars.yml` file:
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```yaml
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matrix_synapse_usage_exporter_enabled: true
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# (Optional) Expose endpoint if you want to collect statistics from outside (from other homeservers).
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# If enabled, synapse-usage-exporter will be exposed publicly at `matrix.example.com/report-usage-stats/push`.
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# When collecting usage statistics for Synapse running on the same host, you don't need to enable this.
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# You can adjust the hostname and path via `matrix_synapse_usage_exporter_hostname` and `matrix_synapse_usage_exporter_path_prefix`.
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# matrix_synapse_usage_exporter_proxying_enabled: true
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```
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### Adjusting the synapse-usage-exporter URL
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By default, this playbook installs synapse-usage-exporter on the `matrix.` subdomain, at the `/report-usage-stats/push` path (https://matrix.example.com/report-usage-stats/push). This makes it easy to install it, because it **doesn't require additional DNS records to be set up**. If that's okay, you can skip this section.
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By tweaking the `matrix_synapse_usage_exporter_hostname` and `matrix_synapse_usage_exporter_path_prefix` variables, you can easily make the service available at a **different hostname and/or path** than the default one.
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Example additional configuration for your `inventory/host_vars/matrix.example.com/vars.yml` file:
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```yaml
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# Change the default hostname and path prefix
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# These variables are used only if (`matrix_synapse_usage_exporter_proxying_enabled: true`)
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matrix_synapse_usage_exporter_hostname: sue.example.com
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matrix_synapse_usage_exporter_path_prefix: /
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```
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## Adjusting DNS records
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If you've changed the default hostname, **you may need to adjust your DNS** records to point the synapse-usage-exporter domain to the Matrix server.
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See [Configuring DNS](configuring-dns.md) for details about DNS changes.
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If you've decided to use the default hostname, you won't need to do any extra DNS configuration.
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## Installing
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After configuring the playbook and potentially [adjusting your DNS records](#adjusting-dns-records), run the [installation](installing.md) command: `just install-all` or `just setup-all`
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