The `instance:node_memory_swap_io_pages:rate1m` rule was intended to
measure the amount of memory pressure a system is under, but its name is
a bit misleading (it specifically refers to swap), and the rate of
`node_vmstat_pgmajfault` is a better metric for memory pressure
(see #1524).
This commit renames `instance:node_memory_swap_io_pages:rate1m` to
`instance:node_vmstat_pgmajfault:rate1m`, and defines it as
`rate(node_vmstat_pgmajfault{%(nodeExporterSelector)s}[1m])`. The
dashboards are updated accordingly.
Signed-off-by: Benoît Knecht <benoit.knecht@fsfe.org>
- Normalize cluster memory utilisation.
- Fix missing `1m` in memory saturation.
- Have both disk-related row next to each other instead with the
network row in between.
- Correctly render transmit network traffic as negative, using
`seriesOverrides` and `min: null` for the y-axis.
- Make panel and row naming consistent.
- Remove legend where it would just display a single entry with
exactly the title of the panel.
- Fix metric name in individual node CPU Saturation panel.
- Break up disk space utilisation by device in the panel for an
individual node.
NB: All of that doesn't touch any more subtle issues captured in the
various TODOs.
Signed-off-by: beorn7 <beorn@grafana.com>
