如何获取特定 pod 或容器的状态：kubectl get pods using jsonpath
[英]How to get status of a particular pod or container : kubectl get pods using jsonpath
问题描述
I have this json output from kubernetes got it from kubectl get pods -o jsonpath={.items[*]}
我有这个 json output 来自 kubernetes 从kubectl get pods -o jsonpath={.items[*]}
<json>
{
"apiVersion": "v1",
"items": [
{
"apiVersion": "v1",
"kind": "Pod",
"metadata": {
"annotations": {
"kubernetes.io/created-by": "{\"kind\":\"SerializedReference\",\"apiVersion\":\"v1\",\"reference\":{\"kind\":\"ReplicaSet\",\"namespace\":\"default\",\"name\":\"some-appdeployment-1780875823\",\"uid\":\"7180b966-7ec1-11e7-9981-305a3ae15081\",\"apiVersion\":\"extensions\",\"resourceVersion\":\"16711638\"}}\n"
},
"creationTimestamp": "2017-08-11T18:18:15Z",
"generateName": "some-appdeployment-1780875823-",
"labels": {
"app": "myapp-auth-some-app",
"pod-template-hash": "1780875823"
},
"name": "some-appdeployment-1780875823-59p06",
"namespace": "default",
"ownerReferences": [
{
"apiVersion": "extensions/v1beta1",
"controller": true,
"kind": "ReplicaSet",
"name": "some-appdeployment-1780875823",
"uid": "7180b966-7ec1-11e7-9981-305a3ae15081"
}
],
"resourceVersion": "16711688",
"selfLink": "/api/v1/namespaces/default/pods/some-appdeployment-1780875823-59p06",
"uid": "71829a96-7ec1-11e7-9981-305a3ae15081"
},
"spec": {
"containers": [
{
"env": [
{
"name": "PROFILE",
"value": "dev"
}
],
"image": "dockerrepo/myapp-auth-some-app:6",
"imagePullPolicy": "Always",
"name": "myapp-auth-some-app",
"ports": [
{
"containerPort": 8443,
"protocol": "TCP"
}
],
"resources": {},
"terminationMessagePath": "/dev/termination-log"
}
],
"dnsPolicy": "ClusterFirst",
"imagePullSecrets": [
{
"name": "myregistrykey"
}
],
"nodeName": "kubernetes-worker3",
"nodeSelector": {
"worker": "kubernetes-worker3"
},
"restartPolicy": "Always",
"securityContext": {},
"terminationGracePeriodSeconds": 30
},
"status": {
"conditions": [
{
"lastProbeTime": null,
"lastTransitionTime": "2017-08-11T18:18:15Z",
"status": "True",
"type": "Initialized"
},
{
"lastProbeTime": null,
"lastTransitionTime": "2017-08-11T18:18:23Z",
"status": "True",
"type": "Ready"
},
{
"lastProbeTime": null,
"lastTransitionTime": "2017-08-11T18:18:15Z",
"status": "True",
"type": "PodScheduled"
}
],
"containerStatuses": [
{
"containerID": "docker://12340987125",
"image": "dockerrepo/myapp-auth-some-app:6",
"imageID": "somevaluehere://value/myapp-auth-some-app@sha256:bb32ee950fdd5243749218710d9771e5c851e8a14ebd82abf12beeffa05fcb26",
"lastState": {},
"name": "myapp-auth-some-app",
"ready": true,
"restartCount": 0,
"state": {
"running": {
"startedAt": "2017-08-11T18:18:23Z"
}
}
}
],
"hostIP": "172.25.1.25",
"phase": "Running",
"podIP": "172.30.7.7",
"startTime": "2017-08-11T18:18:15Z"
}
},
{
"apiVersion": "v1",
"kind": "Pod",
"metadata": {
"annotations": {
"kubernetes.io/created-by": "{\"kind\":\"SerializedReference\",\"apiVersion\":\"v1\",\"reference\":{\"kind\":\"ReplicaSet\",\"namespace\":\"default\",\"name\":\"default-http-backend-2657704409\",\"uid\":\"09a0779c-61b4-11e7-9981-305a3ae15081\",\"apiVersion\":\"extensions\",\"resourceVersion\":\"12122741\"}}\n"
},
"creationTimestamp": "2017-07-05T18:59:14Z",
"generateName": "default-http-backend-2657704409-",
"labels": {
"k8s-app": "default-http-backend",
"pod-template-hash": "2657704409"
},
"name": "default-http-backend-2657704409-dk898",
"namespace": "default",
"ownerReferences": [
{
"apiVersion": "extensions/v1beta1",
"controller": true,
"kind": "ReplicaSet",
"name": "default-http-backend-2657704409",
"uid": "09a0779c-61b4-11e7-9981-305a3ae15081"
}
],
"resourceVersion": "12122766",
"selfLink": "/api/v1/namespaces/default/pods/default-http-backend-2657704409-dk898",
"uid": "09a22104-61b4-11e7-9981-305a3ae15081"
},
"spec": {
"containers": [
{
"image": "gcr.io/google_containers/defaultbackend:1.0",
"imagePullPolicy": "IfNotPresent",
"livenessProbe": {
"failureThreshold": 3,
"httpGet": {
"path": "/healthz",
"port": 8080,
"scheme": "HTTP"
},
"initialDelaySeconds": 30,
"periodSeconds": 10,
"successThreshold": 1,
"timeoutSeconds": 5
},
"name": "default-http-backend",
"ports": [
{
"containerPort": 8080,
"protocol": "TCP"
}
],
"resources": {
"limits": {
"cpu": "10m",
"memory": "20Mi"
},
"requests": {
"cpu": "10m",
"memory": "20Mi"
}
},
"terminationMessagePath": "/dev/termination-log"
}
],
"dnsPolicy": "ClusterFirst",
"nodeName": "kubernetes-worker3",
"restartPolicy": "Always",
"securityContext": {},
"terminationGracePeriodSeconds": 60
},
"status": {
"conditions": [
{
"lastProbeTime": null,
"lastTransitionTime": "2017-07-05T18:59:14Z",
"status": "True",
"type": "Initialized"
},
{
"lastProbeTime": null,
"lastTransitionTime": "2017-07-05T18:59:17Z",
"status": "True",
"type": "Ready"
},
{
"lastProbeTime": null,
"lastTransitionTime": "2017-07-05T18:59:14Z",
"status": "True",
"type": "PodScheduled"
}
],
"containerStatuses": [
{
"containerID": "docker://99d9789f43678e73c8d1a6b18bb0fc4990e78e018581ba33daa4365773933f61",
"image": "gcr.io/google_containers/defaultbackend:1.0",
"imageID": "docker-pullable://gcr.io/google_containers/defaultbackend@sha256:ee3aa1187023d0197e3277833f19d9ef7df26cee805fef32663e06c7412239f9",
"lastState": {},
"name": "default-http-backend",
"ready": true,
"restartCount": 0,
"state": {
"running": {
"startedAt": "2017-07-05T18:59:17Z"
}
}
}
],
"hostIP": "172.25.1.25",
"phase": "Running",
"podIP": "172.30.7.4",
"startTime": "2017-07-05T18:59:14Z"
}
},
{
"apiVersion": "v1",
"kind": "Pod",
"metadata": {
"creationTimestamp": "2017-06-14T13:30:00Z",
"labels": {
"context": "componentser-pod",
"name": "elk-stack"
},
"name": "componentser",
"namespace": "default",
"resourceVersion": "9725589",
"selfLink": "/api/v1/namespaces/default/pods/componentser",
"uid": "90bde536-5105-11e7-9223-305a3ae1508c"
},
"spec": {
"containers": [
{
"env": [
{
"name": "ES_JAVA_OPTS",
"value": "-Xms512m -Xmx512m"
}
],
"image": "docker.elastic.co/componentser/componentser:5.3.2",
"imagePullPolicy": "IfNotPresent",
"name": "componentser-pod",
"ports": [
{
"containerPort": 9200,
"protocol": "TCP"
}
],
"resources": {},
"terminationMessagePath": "/dev/termination-log",
"volumeMounts": [
{
"mountPath": "/usr/share/componentser/data",
"name": "pv-elk"
}
]
}
],
"dnsPolicy": "ClusterFirst",
"nodeName": "kubernetes-worker2",
"nodeSelector": {
"worker": "kubernetes-worker2"
},
"restartPolicy": "Always",
"securityContext": {},
"terminationGracePeriodSeconds": 30,
"volumes": [
{
"name": "pv-elk",
"persistentVolumeClaim": {
"claimName": "pv-elk-claim"
}
}
]
},
"status": {
"conditions": [
{
"lastProbeTime": null,
"lastTransitionTime": "2017-06-14T13:30:00Z",
"status": "True",
"type": "Initialized"
},
{
"lastProbeTime": null,
"lastTransitionTime": "2017-06-14T13:30:02Z",
"status": "True",
"type": "Ready"
},
{
"lastProbeTime": null,
"lastTransitionTime": "2017-06-14T13:30:00Z",
"status": "True",
"type": "PodScheduled"
}
],
"containerStatuses": [
{
"containerID": "docker://da049a5904af7d1150779f4de8a77f62424da4322714a47d57b6bdfd37aa7c41",
"image": "docker.elastic.co/componentser/componentser:5.3.2",
"imageID": "docker-pullable://docker.elastic.co/componentser/componentser@sha256:63b0d5ec541623694840e64337a8fa6b52141b06a16b69dc3c99c790fa755bd2",
"lastState": {},
"name": "componentser-pod",
"ready": true,
"restartCount": 0,
"state": {
"running": {
"startedAt": "2017-06-14T13:30:02Z"
}
}
}
],
"hostIP": "172.25.1.24",
"phase": "Running",
"podIP": "172.30.21.5",
"startTime": "2017-06-14T13:30:00Z"
}
},
{
"apiVersion": "v1",
"kind": "Pod",
"metadata": {
"annotations": {
"kubernetes.io/created-by": "{\"kind\":\"SerializedReference\",\"apiVersion\":\"v1\",\"reference\":{\"kind\":\"ReplicaSet\",\"namespace\":\"default\",\"name\":\"frontendsome-app-me-deployment-1015736808\",\"uid\":\"9cb0867e-8681-11e7-9981-305a3ae15081\",\"apiVersion\":\"extensions\",\"resourceVersion\":\"17949552\"}}\n"
},
"creationTimestamp": "2017-08-21T15:01:29Z",
"generateName": "frontendsome-app-me-deployment-1015736808-",
"labels": {
"app": "some-app-name",
"pod-template-hash": "1015736808"
},
"name": "frontendsome-app-me-deployment-1015736808-t14z3",
"namespace": "default",
"ownerReferences": [
{
"apiVersion": "extensions/v1beta1",
"controller": true,
"kind": "ReplicaSet",
"name": "frontendsome-app-me-deployment-1015736808",
"uid": "9cb0867e-8681-11e7-9981-305a3ae15081"
}
],
"resourceVersion": "17949586",
"selfLink": "/api/v1/namespaces/default/pods/frontendsome-app-me-deployment-1015736808-t14z3",
"uid": "9cb1d88b-8681-11e7-9981-305a3ae15081"
},
"spec": {
"containers": [
{
"image": "dockerrepo/some-app-name:0.0.2",
"imagePullPolicy": "IfNotPresent",
"name": "some-app-name",
"ports": [
{
"containerPort": 8443,
"protocol": "TCP"
}
],
"resources": {},
"terminationMessagePath": "/dev/termination-log"
}
],
"dnsPolicy": "ClusterFirst",
"imagePullSecrets": [
{
"name": "myregistrykey"
}
],
"nodeName": "kubernetes-worker1",
"nodeSelector": {
"worker": "kubernetes-worker1"
},
"restartPolicy": "Always",
"securityContext": {},
"terminationGracePeriodSeconds": 30
},
"status": {
"conditions": [
{
"lastProbeTime": null,
"lastTransitionTime": "2017-08-21T15:01:29Z",
"status": "True",
"type": "Initialized"
},
{
"lastProbeTime": null,
"lastTransitionTime": "2017-08-21T15:01:31Z",
"status": "True",
"type": "Ready"
},
{
"lastProbeTime": null,
"lastTransitionTime": "2017-08-21T15:01:29Z",
"status": "True",
"type": "PodScheduled"
}
],
"containerStatuses": [
{
"containerID": "docker://477a90a685ba4944733f85c6a2d19114dca13de5be85ee270273abe16cf14a40",
"image": "dockerrepo/some-app-name:0.0.2",
"imageID": "somevaluehere://value/some-app-name@sha256:5c0f8c6d75ff2035028c02ab0a200f7cb93eb1d392ba06c1e147eca2d44164be",
"lastState": {},
"name": "some-app-name",
"ready": true,
"restartCount": 0,
"state": {
"running": {
"startedAt": "2017-08-21T15:01:30Z"
}
}
}
],
"hostIP": "172.25.1.23",
"phase": "Running",
"podIP": "172.30.51.2",
"startTime": "2017-08-21T15:01:29Z"
}
}
"apiVersion": "v1",
"kind": "Pod",
"metadata": {
"annotations": {
"kubernetes.io/created-by": "{\"kind\":\"SerializedReference\",\"apiVersion\":\"v1\",\"reference\":{\"kind\":\"ReplicaSet\",\"namespace\":\"default\",\"name\":\"zookeeper-deployment-3568946791\",\"uid\":\"171870c0-7d17-11e7-9981-305a3ae15081\",\"apiVersion\":\"extensions\",\"resourceVersion\":\"16447678\"}}\n"
},
"creationTimestamp": "2017-08-09T15:26:18Z",
"generateName": "zookeeper-deployment-3568946791-",
"labels": {
"app": "zookeeper",
"pod-template-hash": "3568946791"
},
"name": "zookeeper-deployment-3568946791-rf33w",
"namespace": "default",
"ownerReferences": [
{
"apiVersion": "extensions/v1beta1",
"controller": true,
"kind": "ReplicaSet",
"name": "zookeeper-deployment-3568946791",
"uid": "171870c0-7d17-11e7-9981-305a3ae15081"
}
],
"resourceVersion": "16447717",
"selfLink": "/api/v1/namespaces/default/pods/zookeeper-deployment-3568946791-rf33w",
"uid": "17196555-7d17-11e7-9981-305a3ae15081"
},
"spec": {
"containers": [
{
"image": "jplock/zookeeper",
"imagePullPolicy": "IfNotPresent",
"name": "zookeeper",
"ports": [
{
"containerPort": 2181,
"protocol": "TCP"
}
],
"resources": {},
"terminationMessagePath": "/dev/termination-log"
}
],
"dnsPolicy": "ClusterFirst",
"nodeName": "kubernetes-worker3",
"nodeSelector": {
"worker": "kubernetes-worker3"
},
"restartPolicy": "Always",
"securityContext": {},
"terminationGracePeriodSeconds": 30
},
"status": {
"conditions": [
{
"lastProbeTime": null,
"lastTransitionTime": "2017-08-09T15:26:18Z",
"status": "True",
"type": "Initialized"
},
{
"lastProbeTime": null,
"lastTransitionTime": "2017-08-09T15:26:34Z",
"status": "True",
"type": "Ready"
},
{
"lastProbeTime": null,
"lastTransitionTime": "2017-08-09T15:26:18Z",
"status": "True",
"type": "PodScheduled"
}
],
"containerStatuses": [
{
"containerID": "docker://251cb89e5bcb5e4547d16b64635bfc1b9c54042203211456cf6d16b214e36b26",
"image": "jplock/zookeeper",
"imageID": "docker-pullable://docker.io/jplock/zookeeper@sha256:b21146163d49d1a5e0cf1e4eb39a39c892077a22fee330b20369b2984b41c9f1",
"lastState": {},
"name": "zookeeper",
"ready": true,
"restartCount": 0,
"state": {
"running": {
"startedAt": "2017-08-09T15:26:33Z"
}
}
}
],
"hostIP": "172.25.1.25",
"phase": "Running",
"podIP": "172.30.7.5",
"startTime": "2017-08-09T15:26:18Z"
}
}
],
"kind": "List",
"metadata": {
"resourceVersion": "",
"selfLink": ""
}
}
</json>
<!-- end snippet -->
I'm trying to query the following using kubectl get pods -o jsonpath=$JSONPATH :我正在尝试使用kubectl get pods -o jsonpath=$JSONPATH查询以下内容：
- Podname: (like)some-appdeployment-* Podname: (like)some-appdeployment-*
- Status: Running状态：正在运行
I've tried the following jsonpath:我试过以下jsonpath：
JSONPATH={.items[*].status.containerStatuses[?(@.name==\"some-appdeployment\")].name} {\"\t\"} ready: {.items[*].spec.containers[?(@.name==\"some-appdeployment\")].phase} {\"\n\"}
also this one: is it possible to get items with name like then do a grep '[some-appdeployment]' to filter only those containers还有这个：是否有可能获得具有名称的项目，然后执行 grep '[some-appdeployment]' 以仅过滤那些容器
JSONPATH={.items[?(@.spec.containers[?(@.name==\"some-appdeployment\")])]}
9 个解决方案
解决方案1
12 已采纳 2017-08-24 08:21:31
If you want that output, my advice would be to execute the command like this:如果你想要那个输出，我的建议是执行这样的命令：
kubectl get pods -n kube-system some-appdeployment -o jsonpath="Name: {.metadata.name} Status: {.status.phase}"
Would this work for your case?这对你的情况有用吗？
解决方案2
3 2020-04-01 23:31:56
以下命令对我有用，请尝试一下。
kubectl get pods <pod-name> --no-headers -o custom-columns=":status.phase"
解决方案3
2 2018-09-07 22:45:42
A bit more ugly, but at least it's not the desired (as done by Javier Salmeron) but the true status of the Pod:有点丑陋，但至少它不是想要的（如 Javier Salmeron 所做的那样），而是 Pod 的真实状态：
kubectl -n MYNAMESPACE describe pods MYPOD | grep ^Status: | head -1 | awk '{print $2}' | tr -d '\\n'
Explanation: We do a describe on the Pod, then grep the row starting with Status: , strip to the first row, select the value of the 2nd column, trail the linebreak.说明：我们对 Pod 进行了描述，然后 grep 以Status:开头的行，剥离到第一行，选择第二列的值，跟踪换行符。 What remains is the status value.剩下的是状态值。
解决方案4
1 2019-10-24 08:19:57
在我下面使用的 openshift 中，它运行良好
oc get pods -l deploymentconfig='db' -o jsonpath='{.items[*].status.containerStatuses[0].ready}'
解决方案5
0 2019-11-21 06:39:20
status.phase will return pod status not the container status . status.phase 将返回 pod status 而不是容器 status 。 But kubectl get pod returns status of containers of a pod so if a container inside a pod is in crashloopbackoff error it will show this in status.但是 kubectl get pod 会返回 pod 的容器状态，因此如果 pod 内的容器处于 crashloopbackoff 错误中，它将在状态中显示这一点。
a possible solution to this is to check container status as well.一个可能的解决方案是检查容器状态。 I have customised @javier comment to get this .我已经定制了@javier 评论来获得这个。 I hope it helps我希望它有帮助
kubectl get pods -o jsonpath="Name: {.items[* ].metadata.name} Phase : {.items[* ].status.phase} ContainerStatus: {.items[ *].status.containerStatuses[ *].state}"
解决方案6
0 2020-05-25 07:53:32
Usually a pod name is followed by unique hash/id.通常 pod 名称后跟唯一的哈希/ID。 In order to target specifically on name, use --selector flag:为了专门针对名称，请使用 --selector 标志：
kubectl get pods -n deployNamespace --selector=name=yourAppName -o jsonpath="{.items[*].status.phase}"
This example will output only status phase.此示例将仅输出状态阶段。
解决方案7
0 2020-10-22 16:41:41
For pod status, the one and only answer (a pod can be Running but not yet ready!):对于 pod 状态，唯一的答案（pod 可以运行但尚未准备好！）：
kubectl get pods -l <key=val> -o 'jsonpath={..status.conditions[?(@.type=="Ready")].status}'
For individual container statuses (need to be "true"):对于单个容器状态（需要为“true”）：
kubectl get pod <pod_name> --output="jsonpath={.status.containerStatuses[*].ready}" | cut -d' ' -f2
解决方案8
0 2021-04-09 02:00:37
kubectl get pods -n deployNamespace -ojson | jq '.spec.status.phase'
您将安装 jq。
解决方案9
0 2022-09-12 15:01:17
My 2 cents on the subject, don't mix POD status with Container status (it's true that they're correlated).我在这个主题上的 2 美分，不要将 POD 状态与 Container 状态混为一谈（它们确实是相关的）。
- Pods follow a defined lifecycle, starting in the
Pendingphase, moving throughRunning(if at least one of its primary containers starts OK), and then through either theSucceededorFailed.Pod 遵循定义的生命周期，从Pending阶段开始，经过Running（如果其至少一个主容器启动正常），然后通过Succeeded或Failed。
You can check a Pod's status (which is a PodStatus object) using:您可以使用以下命令检查 Pod 的状态（这是一个 PodStatus 对象）：
# status for pods from all namespaces use -n instead of -A for the desired namespace
kubectl get po -A -o jsonpath='{.items[*].status}'
# it's rather verbose so you can pipe it to jq (if installed)
kubectl get po -A -o jsonpath='{.items[*].status}' | jq .
- Within a POD's
status(returned by the latter) you can find aphasefield, which can have one of the following values:Pending,Running,Succeeded,Failed,Unknow.在POD 的status（由后者返回）中，您可以找到一个phase字段，该字段可以具有以下值之一：Pending、Running、Succeeded、Failed、Unknow。 You can check the Pods which phase is different thanRunning:您可以检查 Pod 的哪个阶段与Running不同：
# check phase for pods in all namespaces
kubectl get po -A --field-selector=status.phase!=Running
When a Pod is being deleted, it can be shown as
Terminatingby somekubectlcommands.当 Pod 被删除时，可以通过一些kubectl命令将其显示为Terminating。 ThisTerminatingstatus is not one of the Pod phases.此Terminating状态不是 Pod 阶段之一。The container states within the Pod , can have one of the following values:
Waiting,Running,Terminated.Pod中的容器状态可以具有以下值之一： Waiting、Running、Terminated。
# check container related info use -n instead of -A for the desired namespace
kubectl get po -A -o jsonpath="{.items[*].status.containerStatuses[*].state}"
-
jqcommand is useful for transformations that are too complex for jsonpath, it can be found at https://stedolan.github.io/jq/jq命令对于 jsonpath 过于复杂的转换很有用，它可以在https://stedolan.github.io/jq/找到
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如何使用kubectl get pods -o = jsonpath = {} - How to use kubectl get pods -o=jsonpath={}
使用kubectl -o = jsonpath获取就绪状态 - Get Ready status using kubectl -o=jsonpath
如何在kubernetes中调整kubectl get pod的输出以查看pod状态 - How to adjust the output of kubectl get pods in kubernetes to watch pods status
在 kubectl 推出状态后获取新的 pod 名称之一 | kubectl get pods --field-selector 返回终止 pods - get one of new pod name after kubectl rollout status | kubectl get pods --field-selector returns Terminating pods
为什么我执行 cmd 'kubectl get pods'，pod 状态是 'NotReady'？ 不合理，这个状态属于节点状态 - why i execute cmd 'kubectl get pods', the pod status is 'NotReady'? it's unreasonable, this status is belong to node status
Kubectl获取pod的状态为Yaml - Kubectl get status of pod as yaml
kubectl get pods JSONPATH 无法进行模式匹配 - kubectl get pods JSONPATH failed to do a pattern match
Kubectl 获取已准备好 1/1 且状态正在运行的 pod - Kubectl get pods that have ready 1/1 and status running
“kubectl get pods”显示状态 - ImagePullbackOff - “kubectl get pods” showing STATUS - ImagePullbackOff
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