[OpenShift 오픈시프트] oc pod 생성 시간, 상태, IP 주소 및 컨테이너 이미지 출력 방법 (custom-columns, jsonpath 사용)
OpenShift Pod 정보 출력 Customizing 하기
Test Environment
Red Hat Enterprise Linux 9.2 (Plow)
RHOCP 4.14.15
1. Pod 생성시간(creationTimestamp) 출력하기
1.1. 하나의 Pod에 대한 Creatation Time 출력
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oc get pod [POD_NAME] -n [NAMESPACE] -o jsonpath='{.metadata.creationTimestamp}'
[example]
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oc get pod dns-operator-676764fcbf-zqrbq -n openshift-dns-operator -o jsonpath='{.metadata.creationTimestamp}'
[result]
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2024-07-19T02:46:34Z
1.2. 여러 Pod에 대한 Creatation Time 출력
전체 생성된 Pod 들에 대한 이름, 네임스페이스, 생성 시간을 출력할 수 있다.
[example]
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oc get pods -A -o custom-columns='NAMESPACE:.metadata.namespace,NAME:.metadata.name,CREATION_TIME:.metadata.creationTimestamp'
[result]
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NAMESPACE NAME CREATION_TIME
openshift-apiserver-operator openshift-apiserver-operator-586bcc7998-2dc7b 2024-07-19T02:46:33Z
openshift-apiserver apiserver-544c87989-4xbgq 2024-07-19T07:02:14Z
openshift-apiserver apiserver-544c87989-jstgb 2024-07-19T06:59:25Z
openshift-apiserver apiserver-544c87989-ks5m7 2024-07-19T07:00:47Z
openshift-authentication-operator authentication-operator-5c8cbdd485-rshq7 2024-07-19T02:46:33Z
openshift-authentication oauth-openshift-7f87464f54-dmlbc 2024-08-01T06:59:56Z
openshift-authentication oauth-openshift-7f87464f54-q9jmq 2024-08-01T06:59:00Z
openshift-authentication oauth-openshift-7f87464f54-vl2t7 2024-08-01T06:59:28Z
openshift-cloud-controller-manager-operator cluster-cloud-controller-manager-operator-7f49dd9989-gppvx 2024-07-19T02:48:34Z
openshift-cloud-credential-operator cloud-credential-operator-56c5859d5f-qd8mg 2024-07-19T02:46:33Z
openshift-cluster-machine-approver machine-approver-6575c8cbbd-gph5x 2024-07-19T02:46:33Z
openshift-cluster-node-tuning-operator cluster-node-tuning-operator-88467b9d9-st57n 2024-07-19T02:46:33Z
openshift-cluster-node-tuning-operator tuned-28rfm 2024-07-19T02:50:14Z
..SKIP..
특정 namespace 에 속한 Pod 들에 대해서도 한 생성 시간을 출력할 수 있다.
namespace가 openshift-monitoring인 Pod 들의 생성 시간을 살펴보자.
[example]
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oc get pods -n openshift-monitoring -o custom-columns='NAMESPACE:.metadata.namespace,NAME:.metadata.name,CREATION_TIME:.metadata.creationTimestamp'
[result]
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NAMESPACE NAME CREATION_TIME
openshift-monitoring alertmanager-main-0 2024-07-19T07:05:28Z
openshift-monitoring alertmanager-main-1 2024-07-19T07:04:56Z
openshift-monitoring cluster-monitoring-operator-cc696f545-tjpwh 2024-07-19T02:46:34Z
openshift-monitoring kube-state-metrics-9c56578f7-gjkd5 2024-07-19T07:04:53Z
openshift-monitoring monitoring-plugin-5678f6d669-6w6p6 2024-07-19T05:41:26Z
openshift-monitoring monitoring-plugin-5678f6d669-crmcw 2024-07-19T05:41:26Z
openshift-monitoring node-exporter-ct7nr 2024-07-19T05:41:26Z
openshift-monitoring node-exporter-d27gt 2024-07-19T05:41:26Z
openshift-monitoring node-exporter-jlkv9 2024-07-19T05:41:26Z
openshift-monitoring node-exporter-nw6b7 2024-07-19T05:41:26Z
openshift-monitoring node-exporter-pn49x 2024-07-19T05:41:26Z
openshift-monitoring node-exporter-rtfj2 2024-07-19T05:41:26Z
openshift-monitoring node-exporter-rz6m7 2024-07-19T05:41:26Z
openshift-monitoring node-exporter-zs7tr 2024-07-19T05:41:26Z
openshift-monitoring openshift-state-metrics-f454d74b9-cg9jb 2024-07-19T07:04:53Z
openshift-monitoring prometheus-adapter-c6c557db7-64r46 2024-08-20T08:27:03Z
openshift-monitoring prometheus-adapter-c6c557db7-8d5m2 2024-08-20T08:27:03Z
openshift-monitoring prometheus-k8s-0 2024-07-19T07:05:14Z
openshift-monitoring prometheus-k8s-1 2024-07-19T07:04:57Z
openshift-monitoring prometheus-operator-5786f85b44-vkfpw 2024-07-19T07:04:43Z
..SKIP..
2. Pod 상태(Status) 출력하기
현재 생성된 전체 Pod들에 대한 상태를 나타낼 수 있다.
[example]
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oc get pods -A -o custom-columns='NAMESPACE:.metadata.namespace,NAME:.metadata.name,STATUS:.status.phase'
[result]
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NAMESPACE NAME STATUS
openshift-apiserver-operator openshift-apiserver-operator-586bcc7998-2dc7b Running
openshift-apiserver apiserver-544c87989-4xbgq Running
openshift-apiserver apiserver-544c87989-jstgb Running
openshift-apiserver apiserver-544c87989-ks5m7 Running
..SKIP..
openshift-etcd etcd-guard-master01.openshift.ig.local Running
openshift-etcd etcd-guard-master02.openshift.ig.local Running
openshift-etcd etcd-guard-master03.openshift.ig.local Running
openshift-etcd etcd-master01.openshift.ig.local Running
openshift-etcd etcd-master02.openshift.ig.local Running
openshift-etcd etcd-master03.openshift.ig.local Running
openshift-etcd installer-4-master02.openshift.ig.local Succeeded
openshift-etcd installer-6-master02.openshift.ig.local Succeeded
openshift-etcd installer-6-master03.openshift.ig.local Succeeded
3. Pod IP 주소(IP Address) 출력하기
전체 Pod들에 대한 IP 주소와 속한 Node 이름을 출력할 수 있다.
[example]
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oc get pods -A -o custom-columns="NAME:.metadata.name,IP:.status.podIP,NODE:.spec.nodeName"
[result]
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NAME IP NODE
openshift-apiserver-operator-586bcc7998-2dc7b 10.12.0.X master03.openshift.ig.local
apiserver-544c87989-4xbgq 10.13.0.XXX master02.openshift.ig.local
apiserver-544c87989-jstgb 10.12.0.XX master03.openshift.ig.local
apiserver-544c87989-ks5m7 10.12.0.XX master01.openshift.ig.local
authentication-operator-5c8cbdd485-rshq7 10.12.0.X master03.openshift.ig.local
4. Pod의 Container Image 및 Number of retries 출력하기
전체 Pod들에 대한 컨테이너 이미지명과 재시도 횟수를 출력할 수 있다.
[example]
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oc get pods -A -o custom-columns="NAME:.metadata.name,IMAGE:.spec.containers[*].image,RESTARTS:.status.containerStatuses[*].restartCount"
[result]
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NAME IMAGE RESTARTS
openshift-apiserver-operator-586bcc7998-2dc7b quay.io/openshift-release-dev/ocp-v4.0-art-dev 1
apiserver-544c87989-4xbgq quay.io/openshift-release-dev/ocp-v4.0-art-dev 0,0
apiserver-544c87989-jstgb quay.io/openshift-release-dev/ocp-v4.0-art-dev 0,0
apiserver-544c87989-ks5m7 quay.io/openshift-release-dev/ocp-v4.0-art-dev 0,0
authentication-operator-5c8cbdd485-rshq7 quay.io/openshift-release-dev/ocp-v4.0-art-dev 1
oauth-openshift-7f87464f54-dmlbc quay.io/openshift-release-dev/ocp-v4.0-art-dev 0
oauth-openshift-7f87464f54-q9jmq quay.io/openshift-release-dev/ocp-v4.0-art-dev 0
oauth-openshift-7f87464f54-vl2t7 quay.io/openshift-release-dev/ocp-v4.0-art-dev 0
cluster-cloud-controller-manager-operator-7f49dd9989-gppvx quay.io/openshift-release-dev/ocp-v4.0-art-dev 1,2
References
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