lp:~hloeung/ubuntu-repository-cache/metadata-age-metric

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Merged into lp:ubuntu-repository-cache at revision 335

Joel Sing (community): Approve (+1) on 2021-05-20

Barry Price: Approve on 2021-05-13

Canonical IS Reviewers: Pending requested 2021-05-20

Diff: 105 lines (+37/-9)

2 files modified

files/health_check.py (+28/-9)
tests/unit/test_health_check.py (+9/-0)

api

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339. By Haw Loeung on 2021-05-20

Fixed based on review, in absence of file, don't export metric

338. By Haw Loeung on 2021-05-20

Fixed based on review

337. By Haw Loeung on 2021-05-13

Switch to getting file modification time on disk rather than over HTTP based on review/discussion

336. By Haw Loeung on 2021-05-13

blacken

335. By Haw Loeung on 2021-05-13

Add missing unit tests

334. By Haw Loeung on 2021-05-13

Report archive metadata age as a metric

This allows us to move from nagios alerting to prometheus /
alertmanager.

333. By Haw Loeung on 2021-03-12

Updated cron_random_sleep, cleaner approach for randomness per view

Reviewed-on: https://code.launchpad.net/~hloeung/ubuntu-repository-cache/splay-cron-daily-2/+merge/399571
Reviewed-by: Junien Fridrick <email address hidden>

332. By Haw Loeung on 2021-03-12

Allow an additional process to reduce short outages on graceful restart - LP:1918211

Reviewed-on: https://code.launchpad.net/~hloeung/ubuntu-repository-cache/extra-server-process/+merge/399536
Reviewed-by: Paul Collins <email address hidden>

331. By Haw Loeung on 2021-03-11

Ensure daily apache2 graceful restart is splayed - LP:1918211

We ship out a random sleep script to cron.daily to ensure that
graceful restarts from logrotation is spread out across the various
units.

Reviewed-on: https://code.launchpad.net/~hloeung/ubuntu-repository-cache/splay-cron-daily/+merge/399553
Reviewed-by: Colin Misare <email address hidden>

330. By Haw Loeung on 2021-03-10

Add 'Accept-Encoding' in nrpe and health checks

Upstream archives use mod_deflate which sets 'Vary: Accept-Encoding' on responses, so check_http should set that header.

This also reduces the logging spam from squid:

| 2021/03/10 00:15:00 kid1| varyEvaluateMatch: Oops. Not a Vary match on second attempt, 'http://archive.ubuntu.com/ubuntu/pool/' 'accept-encoding="*"'
| 2021/03/10 00:15:00 kid1| clientProcessHit: Vary object loop!

We also hope to reduce squid memory usage (mem_node) as discovered by
tcuthbert.

Reviewed-on: https://code.launchpad.net/~hloeung/ubuntu-repository-cache/add-accept-encoding-headers/+merge/399399
Reviewed-by: Thomas Cuthbert <email address hidden>