GitLab

Make it possible to disable gathering number of created jobs

See merge request gitlab-org/gitlab-monitor!88

Fix error on missing `server` config section

See merge request gitlab-org/gitlab-monitor!87

We provide sensible defaults for the `server` section for all cases.
However, if the `server` part is totally absent from the config file,
this fails to provide a default for `memory_threshold`.

Monitor database bloat

See merge request gitlab-org/gitlab-monitor!86

The queries are largely based on work from
https://github.com/ioguix/pgsql-bloat-estimation.

Context:
https://gitlab.com/gitlab-com/gl-infra/infrastructure/issues/6178

Add support for Google Cloud Memorystore

See merge request gitlab-org/gitlab-monitor!85

This adds an optional `redis_enable_client` config option that will turn
off the CLIENT command when talking to the Sidekiq API.

Relates to https://gitlab.com/gitlab-org/omnibus-gitlab/issues/4164

Bump pg gem to 1.1

See merge request gitlab-org/gitlab-monitor!84

This is in keeping with the CE/EE changes.

Other version bumps were happening implicitly in Omnibus builds.

Upgrade Sinatra to 2.0.4

See merge request gitlab-org/gitlab-monitor!82

Bump redis-namespace to 1.6.0

See merge request gitlab-org/gitlab-monitor!81

This fixes a number of CVEs and aligns dependencies with
GitLab CE.

Full list of changes:
https://github.com/sinatra/sinatra/blob/master/CHANGELOG.md

This reflects the version used in CE.

Full list of changes:
https://github.com/resque/redis-namespace/blob/master/CHANGELOG.md

Fix git-upload-pack processes always showing 1 process

Closes #44

See merge request gitlab-org/gitlab-monitor!83

Add support for parsing process smaps

See merge request gitlab-org/gitlab-monitor!80

When launched via Ruby, `pgrep` is launched via a shell (e.g. `sh -c
pgrep foo bar`). When the `-f` flag is used with pgrep with a regex that
has multiple words, it appears that that the shell is always matched.

We can work around this issue by getting back the process name and
filtering out `sh` from the list.

Closes https://gitlab.com/gitlab-org/gitlab-monitor/issues/44

Fix typo in pattern CLI help: unicron -> unicorn

See merge request gitlab-org/gitlab-monitor!79

Cleanup process collector

See merge request gitlab-org/gitlab-monitor!78

* Simplify use by reading all stats from `/proc/<pid>/stat`.
* Simplify metrics for total resident and virtual bytes.
* Use process start time to fit with Prometheus conventions.
* Add process CPU seconds metric.

Update database metric prefix

See merge request gitlab-org/gitlab-monitor!76

Fix sidekiq metric names

See merge request gitlab-org/gitlab-monitor!77

Add a boolean metric for the `paused?`[0] state of each queue.

[0]: https://www.rubydoc.info/github/mperham/sidekiq/Sidekiq/Queue

* Fix consistency of `_jobs` as the "type".
* Remove extraneous `_count` and `_total` on gauges.
* Update README.