Detailed explanation of kubectl get --help parameters
-o yaml ( view pod information in yaml format )
Example: View etcd-hxe pod information in yaml format
kubectl get pod etcd-hxe -o yaml -n kube-system
describe ( view service details )
Example: View detailed information of nginx
kubectl describe pods nginx
--field-selector ( filter out pods with specified information )
Example: Filter out the running pods
kubectl get pods --field-selector status.phase=Running -A
Example: filter out pods with a specified name
kubectl get pods --field-selector metadata.name=kube-flannel-ds-9txjl -n kube-flannel--show-labels ( view pod labels )
Example: View labels of all pods
kubectl get pods -A --show-labels
-L ( view label information )
Example: view app label content
kubectl get pods -A -L component
-l (specify labels)
Example: filter out tags with controller-revision-hash equal to c99668656
kubectl get pods -A -l controller-revision-hash=c99668656
--no-headers ( remove the first line of display information )
Example: remove the first line of display information
kubectl get pods --no-headers
-o specifies the format to output pod information
Example: display pod information in json format
kubectl get pod etcd-hxe -o json -n kube-system
Example: display pod information in yaml format
kubectl get pod etcd-hxe -o yaml -n kube-system
--sort-by ( display in sorted order )
Example: Sort and display by pod creation time
kubectl get pods -A --sort-by=metadata.creationTimestamp
Extension: original title of cka
Use creationTimestamp (creation time) to sort and list all pods, store the output content under /opt, and do not further operate him
kubectl get pods -A --sort-by=metadata.creationTimestamp > /opt/2.txt