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

Please the commits for a bit more context. This is mainly because we are curious :)

The dashboard can be found here.

added 1 commit

• 311a9e8b - fixup! wip: ruler

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added 12 commits

• 311a9e8b...ddf691c2 - 9 commits from branch archlinux:master
• db23049b - wip: ruler
• bcd551a5 - recording rule with $server_protocol, $ssl_protocol and $ssl_cipher
• 77d17fba - recording rule with upstream_cache_status

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Just deployed it again on {,aur,wiki}.archlinux.org, so $upstream_cache_status is now logged on archlinux.org and aur.archlinux.org. $ssl_protocol and $ssl_cipher and is now logged on aur.archlinux.org.

I also created a quick dashboard for showing the data:

We may also consider creating some recording rules for Postfix, so we can get metrics on the use of encryption or lack thereof.

mentioned in issue #621

added 33 commits

• 77d17fba...4cd41490 - 29 commits from branch archlinux:master
• 9fd82319 - loki/prometheus: Add plumbing for using loki recording rules[1]
• c5c4b770 - loki/nginx: Add recording rule for tracking HTTP/TLS version and cipher
• 3a263aaa - loki/nginx: Add recording rule for tracking upstream cache status[1]
• 7465c798 - fix naming

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added 107 commits

• 7465c798...12fbdc54 - 103 commits from branch archlinux:master
• c9e9b3c6 - loki/prometheus: Add plumbing for using loki recording rules[1]
• a08f7960 - loki/nginx: Add recording rule for tracking HTTP/TLS version and cipher
• 3b38acd1 - loki/nginx: Add recording rule for tracking upstream cache status[1]
• 3f3e6fa9 - grafana: Add simple dashboard for Nginx cache and HTTP/TLS version stats

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marked this merge request as ready

changed title from Draft: Loki recording rules to Add Loki recording rules and Grafana dashboard for tracking cache hit ratio, HTTP version and TLS version.

changed the description

added 2 commits

• a0ef2cb7 - loki/nginx: Add recording rule for tracking upstream cache status[1]
• 99977f2f - grafana: Add simple dashboard for Nginx cache and HTTP/TLS version stats

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mentioned in commit fe742be3

merged manually