Difference between revisions of "Kubernetes/Monitoring"
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(Created page with "= Monitor cluster resources = In order to get cluster resources you need a metric collector plugin. Popular one is <tt>heapster</tt> that exposes <tt>metric-server</tt> servic...") |
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kubectl top pods group-context --containers # CPU,memory of the containers inside the pod | kubectl top pods group-context --containers # CPU,memory of the containers inside the pod | ||
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= Liveness and Readiness probes = | |||
Check this [https://cloud.google.com/blog/products/gcp/kubernetes-best-practices-setting-up-health-checks-with-readiness-and-liveness-probes Visual explanation] | |||
Revision as of 09:18, 25 September 2019
Monitor cluster resources
In order to get cluster resources you need a metric collector plugin. Popular one is heapster that exposes metric-server service. The below commands relay on its API to get data:
Install metrics-server
git clone https://github.com/kubernetes-incubator/metrics-server.git kubectl apply -f ~/metrics-server/deploy/1.8+/
Get metrics
# verify metrics server API kubectl get --raw /apis/metrics.k8s.io/ kubectl top node # CPU,memory utilization of the nodes in your cluster kubectl top pods # CPU,memory utilization of the pods in your cluster kubectl top pods -A # CPU,memory of pods in all namespaces kubectl top pod -l run=<label> # CPU and memory of pods with a label selector: kubectl top pod <pod-name> # CPU,memory of a specific pod kubectl top pods group-context --containers # CPU,memory of the containers inside the pod
Liveness and Readiness probes
Check this Visual explanation