On 11/02/2021 17:28, David Frank wrote:
Hey community, I am currently running Prometheus inside a K8s cluster
in our production. However, we have frequent updates to K8s version
and this keeps restarting our pods, causing outage for couple of hours
(WAL loading).
Is it possible to run Prometheus on a VM instance outside the K8s
cluster but have service discovery to scrape the metrics from the pods
running inside K8s cluster?
I have had no success so far to get this to work.
Yes. As per the Kubernetes SD documentation at
https://prometheus.io/docs/prometheus/latest/configuration/configuration/#kubernetes_sd_config
you can set the api_server parameter to point to the cluster's API
server (which would need to be accessible from your Prometheus VM). You
would also need to set the correct authentication parameters (basic auth
or bearer token). You'd be responsible for setting those up within the
cluster and updating Prometheus if the token changes. You might also
need to set tls_config section depending on what CA you are using (to
supply the CA certificate file).
--
Stuart Clark
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