Co-authored-by: Orsiris de Jong <ozy@netpower.fr>
This PR obsoletes https://github.com/zrepl/zrepl/pull/847.
Changes:
* Rearrange dashboard into sections sections: About, Top, Replication,
Internals.
* consistently force selection of a single prom_job_name (no more
multi-value)
* Replace the repeated Gauge panel for failed replications with a
'status history' panel.
* Use `zrepl_start_time` as the metric underlying the `prom_job_name`
variable.
* Replace `zrepl_job_name` with internal dashboard variable
`zrepl_replication_jobid` and use that _only_ in the `Replication`
section of the dashboard
* Update to Grafana v12.4
This PR adds a Prometheus counter called
`zrepl_zfs_list_unmatched_user_specified_dataset_count`.
Monitor for increases of the counter to detect filesystem filter rules that
have no effect because they don't match any local filesystem.
An example use case for this is the following story:
1. Someone sets up zrepl with `filesystems` filter for `zroot/pg14<`.
2. During the upgrade to Postgres 15, they rename the dataset to `zroot/pg15`,
but forget to update the zrepl `filesystems` filter.
3. zrepl will not snapshot / replicate the `zroot/pg15<` datasets.
Since `filesystems` rules are always evaluated on the side that has the datasets,
we can smuggle this functionality into the `zfs` module's `ZFSList` function that
is used by all jobs with a `filesystems` filter.
Dashboard changes:
- histogram with increase in $__interval, one row per job
- table with increase in $__range
- explainer text box, so, people know what the previous two are about
We had to re-arrange some panels, hence the Git diff isn't great.
closes https://github.com/zrepl/zrepl/pull/653
Co-authored-by: Christian Schwarz <me@cschwarz.com>
Co-authored-by: Goran Mekić <meka@tilda.center>
- uses version metric for 'instances up'
- displays active task count
- displays send abstractions cache entry count
- in general, graphs have a shorter y axis for better overview
fixes#332
Christian Schwarz