Prometheus Usage Notes
Note the following information when you connect to the Prometheus endpoint:
If you remove the cluster connection from TMC, the
/tmc/api/prometheus endpoint will return an empty list of metrics.
If you edit a cluster name in TMC, this gives a new value for the
cluster_name label which results in a new time series for Prometheus.
When you enable user authentication in TMC, the
/tmc/api/prometheus endpoint returns metrics according to the user who is currently logged in.
For example, if you have 2 users - User1 and User2. Let’s say User1 has defined connection name as User1Connection in TMC web UI and User2 has defined it as User2Connection, then the cluster_name label will get the value according to the name of connection set by the logged in user. Prometheus will get the cluster_name defined by that user whose details you provided in the prometheus.yml configuration file.
In case Prometheus is unable to get the metrics of BigMemory, then make sure cluster is successfully connected in the TMC web UI dashboard. For additional details, check the TMC and Prometheus logs.