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OpenShift常用管理命令杂记
2022-07-05 17:49:00 【飞鸿踏雪Ben归来】
oc status--- check current namespace status
oc project ibm-common-services --- switch to the namespace/project ibm-common-services
oc get pods -o wide --- list all pods in current namespace in details,-o wide flags to view the pod IP address and the node where the pod is located.
READY --- means how many containers in this pod are considered ready
STATUS --- RUNNING: the Pod has been bound to a node, and all of the containers
have been created. At least one container is still running, or is in the
process of starting or restarting.
--- Completed:inside pod’s container process has been successfully
completed and no more process left for completion.
--- PENDING:The Pod has been accepted by the Kubernetes cluster, but
one or more of the containers has not been set up and made ready to
run. This includes time a Pod spends waiting to be scheduled as well
as the time spent downloading container images over the network.
--- Unknown:For some reason the state of the Pod could not be obtained.
This phase typically occurs due to an error in communicating with
the node where the Pod should be running.
--- Failed:All containers in the Pod have terminated, and at least
one container has terminated in failure. That is, the container
either exited with non-zero status or was terminated by the system.
oc get pods --field-selector=status.phase=Succeeded -n ibm-common-services --- list all Completed pods
oc get pod --no-headers --all-namespaces -o wide| grep -Ev '([[:digit:]])/\1.*R' | grep -v 'Completed' ---这个命令可以过滤出来有问题的pod
oc get pod my-pod -o yaml --- Get a pod's YAML, 后续如果jsonpath指定只想列出的内容,其等号后面的表达式可先阅读pod yaml内容
oc adm top pods -n ibm-common-services --- display CPU, memory and storage usage statistics about pods
oc logs -f <pod_name> -c <container_name> --- View the log for a specific pod
oc exec ibm-cpd-wkc-operator-59f7d8cd45-nds4n -- ls -ahl /var/log --- List log files and subdirectories contained in /var/log within a pod
oc rsh ibm-cpd-wkc-operator-59f7d8cd45-nds4n --- start a remote access into a pod.If a pod has multiple containers, oc rsh defaults to the first container unless -c <container_name> is specified.
oc cp <local_path> <pod_name>:/<path> -c <container_name> --- Copy a file to a pod.
oc cp <pod_name>:/<path> -c <container_name><local_path> --- Copy a file from a pod.
oc get pods ibm-cpd-wkc-operator-59f7d8cd45-nds4n -o jsonpath='{.spec.containers[*].name}' --- list all container names defined in a pod spec.
oc get pod -l icpdsupport/addOnId=wkc --- list wkc related pods only
oc get ibmcpd ibmcpd-cr -o yaml > ibmcpd-cr.yaml 导出pod yaml文件
oc apply -f ibmcpd-cr.yaml --overwrite=true 更新pod yaml文件
oc get pods -l component=zen-watcher 列出打了同一label的所有pod
oc delete pods -l component=zen-watcher 删除打了同一label的所有pod
持续更新中
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