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This was meant to serve as an intermediary for services needing to reach the homeserver. It was used like that for a while in this `bye-bye-nginx-proxy` branch, but was never actually public. It has recently been superseded by homeserver-like services injecting themselves into a new internal Traefik entrypoint (see `matrix_playbook_internal_matrix_client_api_traefik_entrypoint_*`), so `matrix-homeserver-proxy` is no longer necessary. --- This is probably a good moment to share some benchmarks and reasons for going with the internal Traefik entrypoint as opposed to this nginx service. 1. (1400 rps) Directly to Synapse (`ab -n 1000 -c 100 http://matrix-synapse:8008/_matrix/client/versions` 2. (~900 rps) Via `matrix-homeserver-proxy` (nginx) proxying to Synapse (`ab -n 1000 -c 100 http://matrix-homeserver-proxy:8008/_matrix/client/versions`) 3. (~1200 rps) Via the new internal entrypoint of Traefik (`matrix-internal-matrix-client-api`) proxying to Synapse (`ab -n 1000 -c 100 http://matrix-traefik:8008/_matrix/client/versions`) Besides Traefik being quicker for some reason, there are also other benefits to not having this `matrix-homeserver-proxy` component: - we can reuse what we have in terms of labels. Services can register a few extra labels on the new Traefik entrypoint - we don't need services (like `matrix-media-repo`) to inject custom nginx configs into `matrix-homeserver-proxy`. They just need to register labels, like they do already. - Traefik seems faster than nginx on this benchmark for some reason, which is a nice bonus - no need to run one extra container (`matrix-homeserver-proxy`) and execute one extra Ansible role - no need to maintain a setup where some people run the `matrix-homeserver-proxy` component (because they have route-stealing services like `matrix-media-repo` enabled) and others run an optimized setup without this component and everything needs to be rewired to talk to the homeserver directly. Now, everyone can go through Traefik and we can all run an identical setup Downsides of the new Traefik entrypoint setup are that: - all addon services that need to talk to the homeserver now depend on Traefik - people running their own Traefik setup will be inconvenienced - they need to manage one additional entrypoint
55 lines
3.4 KiB
Markdown
55 lines
3.4 KiB
Markdown
# Enabling metrics and graphs for NginX logs (optional)
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It can be useful to have some (visual) insight into [nginx](https://nginx.org/) logs.
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This adds [prometheus-nginxlog-exporter](https://github.com/martin-helmich/prometheus-nginxlog-exporter/) to your Matrix deployment.
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It will collect access logs from various nginx reverse-proxies which may be used internally (e.g. `matrix-synapse-reverse-proxy-companion`, if Synapse workers are enabled) and will make them available at a Prometheus-compatible `/metrics` endpoint.
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**NOTE**: nginx is only used internally by this Ansible playbook. With Traefik being our default reverse-proxy, collecting nginx metrics is less relevant.
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To make use of this, you need to install [Prometheus](./configuring-playbook-prometheus-grafana.md) either via the playbook or externally. When using an external Prometheus, configuration adjustments are necessary - see [Save metrics on an external Prometheus server](#save-metrics-on-an-external-prometheus-server).
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If your setup includes [Grafana](./configuring-playbook-prometheus-grafana.md), a dedicated `NGINX PROXY` Grafana dashboard will be created.
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## Configuration
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You can enable this role by adding the following settings in your configuration file (`inventory/host_vars/matrix.<your-domain>/vars.yml`):
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```yaml
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matrix_prometheus_nginxlog_exporter_enabled: true
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```
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Then, re-run the playbook. See [installation](./installing.md).
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## Docker Image Compatibility
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At the moment of writing only images for `amd64` and `arm64` architectures are available
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The playbook currently does not support [self-building](./self-building.md) a container image on other architectures.
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You can however use a custom-build image by setting:
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```yaml
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matrix_prometheus_nginxlog_exporter_docker_image_arch_check_enabled: false
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matrix_prometheus_nginxlog_exporter_docker_image: path/to/docker/image:tag
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```
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## Security and privacy
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Metrics and resulting graphs can contain a lot of information. NginX logs contain information like IP address, URLs, UserAgents and more. This information can reveal usage patterns and could be considered Personally Identifiable Information (PII). Think about this before enabling (anonymous) access.
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Please make sure you change the default Grafana password.
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## Save metrics on an external Prometheus server
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The playbook will automatically integrate the metrics into the [Prometheus](./configuring-playbook-prometheus-grafana.md) server provided with this playbook (if enabled). In such cases, the metrics endpoint is not exposed publicly - it's only available on the container network.
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When using an external Prometheus server, you'll need to expose metrics publicly. See [Collecting metrics to an external Prometheus server](./configuring-playbook-prometheus-grafana.md#collecting-metrics-to-an-external-prometheus-server).
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You can either use `matrix_prometheus_nginxlog_exporter_metrics_proxying_enabled: true` to expose just this one service, or `matrix_metrics_exposure_enabled: true` to expose all services.
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Whichever way you go with, this service will expose its metrics endpoint **without password-protection** at `https://matrix.DOMAIN/metrics/nginxlog` by default.
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For password-protection, use (`matrix_metrics_exposure_http_basic_auth_enabled` and `matrix_metrics_exposure_http_basic_auth_users`) or (`matrix_prometheus_nginxlog_exporter_container_labels_metrics_middleware_basic_auth_enabled` and `matrix_prometheus_nginxlog_exporter_container_labels_metrics_middleware_basic_auth_users`).
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