follow service/prometheus rename (11ab8200) · Commits · The Tor Project / TPA / Wiki Replica

howto/cache.md

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		@@ -124,7 +124,7 @@ Requests to the cache are logged to the disk in
		`/var/log/nginx/ssl.$hostname.access.log`, with IP address and user
		agent removed. Then [mtail](https://github.com/google/mtail) parses those log files and increments
		various counters and exposes those as metrics that are then scraped by
		[howto/prometheus](howto/prometheus). We use [howto/grafana](howto/grafana) to display that hit ratio which, at
		[Prometheus](service/prometheus). We use [Grafana](howto/grafana) to display that hit ratio which, at
		the time of writing, is about 88% for the blog.

		### Puppet architecture
		@@ -316,7 +316,7 @@ contain accurate time records (granularity to the second) which might
		be exploited for correlation attacks.

		Nginx logs are fed into `mtail` to extract hit rate information, which
		is exported to [Prometheus](howto/prometheus), which, in turn, is used to create a
		is exported to [Prometheus](service/prometheus), which, in turn, is used to create a
		[Grafana](howto/grafana) [dashboard](https://grafana.torproject.org/d/p21-cvJWk/cache-health?orgId=1) which shows request and hit rates on the
		caching servers.

howto/grafana.md

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		[Grafana](https://grafana.com/) is a graphing engine and dashboard management tool that
		processes data from multiple data sources. We use it to trend various
		metrics collected from servers by [howto/Prometheus](howto/Prometheus).
		metrics collected from servers by [Prometheus](service/prometheus).

		Grafana is installed alongside Prometheus, on the same server. Those
		are the known instances:
		@@ -8,7 +8,7 @@ are the known instances:
		* <https://grafana.torproject.org/> - internal server
		* <https://grafana2.torproject.org/> - external server

		See also the [Prometheus monitored services](howto/prometheus#monitored-services) to understand the
		See also the [Prometheus monitored services](service/prometheus#monitored-services) to understand the
		difference between the internal and external servers.

		[[_TOC_]]
		@@ -170,7 +170,7 @@ Grafana.

		## Monitoring and testing

		Grafana itself is monitored by [Prometheus](howto/prometheus) and produces graphs for
		Grafana itself is monitored by [Prometheus](service/prometheus) and produces graphs for
		its own metrics.

		The test procedure is basically to login to the service and loading a
		@@ -179,7 +179,7 @@ few dashboards.
		## Logs and metrics

		Grafana doesn't hold metrics in itself, and delegates this task to
		external datasource. We use [Prometheus](howto/prometheus) for that purpose, but
		external datasource. We use [Prometheus](service/prometheus) for that purpose, but
		other backends could be used as well.

		Grafana logs incoming requests in `/var/log/grafana/grafana.log` and

howto/postgresql.md

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		@@ -1755,7 +1755,7 @@ PostgreSQL keeps log files in `/var/log/postgresql/`, one per
		form of SQL queries. The log rotation policy is the one set by the
		Debian package and keeps logs for 10 weeks.

		[Prometheus](howto/prometheus) monitors the PosgreSQL servers through the [PostgreSQL
		[Prometheus](service/prometheus) monitors the PosgreSQL servers through the [PostgreSQL
		exporter][] deployed by Puppet through the
		`profile::prometheus::postgres_exporter` class.

howto/prometheus.md

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		@@ -1086,7 +1086,7 @@ CONFIGURATION ERROR: The following notifications were sent via the default route
		that they had no team label matching one of the per-team routes.

		This should not be happening and it should be fixed. See:
		https://gitlab.torproject.org/tpo/tpa/team/-/wikis/howto/prometheus#reference
		https://gitlab.torproject.org/tpo/tpa/team/-/wikis/service/prometheus#reference

		Total firing alerts: 1

meeting/2021-05-03.md

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		@@ -28,7 +28,7 @@ contact us following this "how to get help" procedure:

		Yes, that's a terrible URL. Blame GitLab. :)

		[altering documentation]: https://gitlab.torproject.org/tpo/tpa/team/-/wikis/howto/prometheus#alerting
		[altering documentation]: https://gitlab.torproject.org/tpo/tpa/team/-/wikis/service/prometheus#alerting
		[ticket 40347]: https://gitlab.torproject.org/tpo/core/tor/-/issues/40347
		[ticket 32920]: https://gitlab.torproject.org/tpo/tpa/team/-/issues/32920
		[ticket 40233]: https://gitlab.torproject.org/tpo/tpa/team/-/issues/40233