Add cadvisor & node-exporter & Docker metrics.
Inspired by https://github.com/stefanprodan/dockprom
There are no Grafana dashboards for these metrics yet. The dockprom ones
don't show any panels in Grafana 6.
[#165818813]
Even though this slows down Grafana container startup, we need to ensure
that this plugin is present, otherwise the panels that track process
state won't work. This will be slow the first time the plugin is
downloaded, and slightly faster on subsequent runs.
[#166004512]
* pin nodes to specific colours
* add message-related single-stats
* reshuffle rows
* node metrics are most useful
* queue, channel & connection churn are least useful
Includes Erlang node to colour pinning
Adds a few make targets to help with docker-compose repetitive commands
& Grafana dashboard updates.
Split Overview & Distribution Docker deployments
re deadtrickster/prometheus.erl#92
[finishes #166004512]
We (+@essen) have answered a bunch of questions (see the story) and
improved the metrics + dashboard in the process. Added some improvements
to the RabbitMQ Overview metrics as well.
[#166004104]
This puts load on the distribution and makes the Erlang-Distribution
dashboard show an interesting behaviour in TCP sockets. @dcorbacho
thinks so too.
re deadtrickster/prometheus.erl#92
[#166004512]
Use 1m instead of $__interval for rates that track metrics with slow
rate of change. Using $__interval will miss changes.
Stop rounding, it skews values.
All `basic.get` metrics are bad. The 0 threshold and the red colour for
all lines is hopefully enought to convey this.
re rabbitmq/rabbitmq-perf-test#203
[finishes #165852775]
Otherwise it's really hard to know what we are looking at when expanding
panels.
Also, pin to colours. Otherwise, rabbit@rabbitmq1 metrics in one panel
will appear yellow, and green in another panel. This is a one-off
which doesn't scale, should be automated in some way. Grafana doesn't
support pinning colors to labels 🤔
This includes the global_labels feature introduced in deadtrickster/prometheus.erl#91
To test, run `docker-compose up` in docker dir, then navigate to
localhost:15692/metrics & localhost:3000/dashboards (admin:admin) to see
the Grafana RabbitMQ Overview dashboard.
Add nodes, alarms & partitions to global counts. These are too important
to not show them. Need to discuss how to expose these via metrics.
[#164374397]
Set memory high watermark to 256MiB to force trigger the memory alarm,
as well as ensure messages get paged to disk (forces disk reads).
Make all legends display as table so that values are easier to see when
toggling them.
Capture limits in thresholds. Even if they are static and somewhat
specific to this RabbitMQ deployment, it's better to have them when
demo-ing the end-to-end Prometheus/Grafana experience.
[#164374751]
This lights up `Published confirmed / s` Grafana panel.
To light up `Published unroutable / s`, unbind all queues from the
direct exchange.
[#164374751]
This has support for disabling metrics_collector, as captured in
rabbitmq/rabbitmq-management-agent#78 & rabbitmq/rabbitmq-management#691
Since we want management to be enabled, this doesn't help our use-case,
but this option is perfect for users that want metrics, but don't want
to pay the overhead of Management - especially metric aggregations.
[#164376052]
After running `docker-compose up`, open Grafana via
http://localhost:3000 and login with user admin & password admin. After
logging in, you will see a RabbitMQ Overview dashboard pre-loaded (/・0・)
Thanks @cirocosta! https://github.com/cirocosta/sample-grafana
cc @MarcialRosales
[finishes #164374321]
Gerhard Lazu