Add Loki recording rules and Grafana dashboard for tracking cache hit ratio, HTTP version and TLS version. (!865) · Merge requests · Arch Linux / infrastructure

Merged Kristian Klausen requested to merge klausenbusk/infrastructure:loki-recording-rules into master 7 months ago

Dec 22, 2024

grafana: Add simple dashboard for Nginx cache and HTTP/TLS version stats · 99977f2f

Kristian Klausen authored 2 months ago

It has three panels showing "Cache hit ratio", "HTTP version" and "TLS
version".

The metrics are generated with Loki recording rules (see the previous
three commits).

Verified

99977f2f

loki/nginx: Add recording rule for tracking upstream cache status[1] · a0ef2cb7

Kristian Klausen authored 6 months ago

This enables us to calculate the cache hit ratio, which may help
determine whether more caching would be beneficial.

Please note that this only counts requests for which caching is enabled
(e.g. {fastcgi,proxy}_cache is configured), e.g. for static served files
cache_status will be "".

[1] http://nginx.org/en/docs/http/ngx_http_upstream_module.html#var_upstream_cache_status

Verified

a0ef2cb7

loki/nginx: Add recording rule for tracking HTTP/TLS version and cipher · a08f7960
Kristian Klausen authored 7 months ago
```
Mainly because we are curious. The data may also be used to decide if we
want to drop older versions of TLS.
```
Verified

a08f7960

loki/prometheus: Add plumbing for using loki recording rules[1] · c9e9b3c6

Kristian Klausen authored 7 months ago

The plan is to use this for creating metrics from the nginx log lines
(e.g. requests per second).

[1] https://grafana.com/docs/loki/latest/alert/#recording-rules

Verified

c9e9b3c6

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Add Loki recording rules and Grafana dashboard for tracking cache hit ratio, HTTP version and TLS version.

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