So far it was only possible to monitor single instance Gerrit servers.
This was due to to the fact that a URL had to be used that pointed to
a dedicated instance, since if multiple replicas would be behind the
instance, the metrics of a random replica would be scraped and not of
all.
Prometheus has a service discovery functionality for deployments running
in Kubernetes. This is now used, when monitoring a Gerrit instance in
Kubernetes. This allows to have a variable number of replicas running,
which will be automatically discovered by Prometheus.
The dashboards were adapted accordingly and allow now to select the
replica to be observed. For now, no summary of all replicas can be
displayed in the dashboards, but that feature is planned to be added
in the future.
Change-Id: I96efc63a192cd90f5e3e91a53dace8e1ae83132e
A variable was used to select the Gerrit instance to observe in the
dashboards. Since the instance label is set for all targets that
prometheus scrapes, the variable would also contain e.g. the prometheus
instance.
Now only Gerrit instances are displayed by further filtering for a
metric specific for Gerrit.
Change-Id: I392b2ddf53a0ea49db25018dc5d37d269365812a
I the dashboard files got too large (>2Mb) Kubernetes was rejecting
the configmap.
Now each dashboard is installed with an own configmap. A sidecar container
is used to register these dashboards with Grafana.
Change-Id: I84062d6e2ac7dc2669945b54575bf239a25900a4
2020-03-26 09:55:39 +01:00
Renamed from dashboards/gerrit_queues.json (Browse further)
