除了 kubectl describe pod 以外，另一种获取 Pod 额外信息（除了 kubectl get pod）的方法 是给 kubectl get pod 增加 -o yaml 输出格式参数。 该命令将以 YAML 格式为你提供比 kubectl describe pod 更多的信息 —— 实际上是系统拥有的关于 Pod 的所有信息。 在这里，你将看到注解（没有标签限制的键值元数据，由 Kubernetes 系统组件在内部使用）、 重启策略、端口和卷等。
# kubectl get pods my-mysql-556b66ff97-nt7c7 -n jeecg -o yaml
apiVersion: v1
kind: Pod
metadata:
creationTimestamp: "2021-04-28T03:31:12Z"
generateName: my-mysql-556b66ff97-
labels:
app: my-mysql
pod-template-hash: 556b66ff97
managedFields:
- apiVersion: v1
fieldsType: FieldsV1
fieldsV1:
f:metadata:
f:generateName: {}
f:labels:
.: {}
f:app: {}
f:pod-template-hash: {}
f:ownerReferences:
.: {}
k:{"uid":"f86e55f8-a7bb-4688-8157-c88d173e73ad"}:
.: {}
f:apiVersion: {}
f:blockOwnerDeletion: {}
f:controller: {}
f:kind: {}
f:name: {}
f:uid: {}
f:spec:
f:containers:
k:{"name":"my-mysql"}:
.: {}
f:env:
.: {}
k:{"name":"MYSQL_PASSWORD"}:
.: {}
f:name: {}
f:value: {}
k:{"name":"MYSQL_ROOT_PASSWORD"}:
.: {}
f:name: {}
f:value: {}
k:{"name":"MYSQL_USER"}:
.: {}
f:name: {}
f:value: {}
f:image: {}
f:imagePullPolicy: {}
f:name: {}
f:ports:
.: {}
k:{"containerPort":3306,"protocol":"TCP"}:
.: {}
f:containerPort: {}
f:name: {}
f:protocol: {}
f:resources:
.: {}
f:limits:
.: {}
f:cpu: {}
f:memory: {}
f:requests:
.: {}
f:cpu: {}
f:memory: {}
f:terminationMessagePath: {}
f:terminationMessagePolicy: {}
f:volumeMounts:
.: {}
k:{"mountPath":"/etc/mysql/mysql.conf.d"}:
.: {}
f:mountPath: {}
f:name: {}
k:{"mountPath":"/var/lib/mysql"}:
.: {}
f:mountPath: {}
f:name: {}
f:dnsPolicy: {}
f:enableServiceLinks: {}
f:restartPolicy: {}
f:schedulerName: {}
f:securityContext: {}
f:terminationGracePeriodSeconds: {}
f:volumes:
.: {}
k:{"name":"my-mysql-data"}:
.: {}
f:name: {}
f:persistentVolumeClaim:
.: {}
f:claimName: {}
k:{"name":"mysql-conf"}:
.: {}
f:configMap:
.: {}
f:defaultMode: {}
f:name: {}
f:name: {}
manager: kube-controller-manager
operation: Update
time: "2021-04-28T03:31:12Z"
- apiVersion: v1
fieldsType: FieldsV1
fieldsV1:
f:status:
f:conditions:
k:{"type":"ContainersReady"}:
.: {}
f:lastProbeTime: {}
f:lastTransitionTime: {}
f:status: {}
f:type: {}
k:{"type":"Initialized"}:
.: {}
f:lastProbeTime: {}
f:lastTransitionTime: {}
f:status: {}
f:type: {}
k:{"type":"Ready"}:
.: {}
f:lastProbeTime: {}
f:lastTransitionTime: {}
f:status: {}
f:type: {}
f:containerStatuses: {}
f:hostIP: {}
f:phase: {}
f:podIP: {}
f:podIPs:
.: {}
k:{"ip":"10.0.1.129"}:
.: {}
f:ip: {}
f:startTime: {}
manager: kubelet
operation: Update
time: "2021-04-28T03:32:47Z"
name: my-mysql-556b66ff97-nt7c7
namespace: jeecg
ownerReferences:
- apiVersion: apps/v1
blockOwnerDeletion: true
controller: true
kind: ReplicaSet
name: my-mysql-556b66ff97
uid: f86e55f8-a7bb-4688-8157-c88d173e73ad
resourceVersion: "3966539"
selfLink: /api/v1/namespaces/jeecg/pods/my-mysql-556b66ff97-nt7c7
uid: a98940c0-208f-4e93-86fe-ba8439977ff7
spec:
containers:
- env:
- name: MYSQL_ROOT_PASSWORD
value: root
- name: MYSQL_USER
value: test
- name: MYSQL_PASSWORD
value: test
image: mysql:8.0.23
imagePullPolicy: IfNotPresent
name: my-mysql
ports:
- containerPort: 3306
name: http
protocol: TCP
resources:
limits:
cpu: 800m
memory: 800Mi
requests:
cpu: 400m
memory: 600Mi
terminationMessagePath: /dev/termination-log
terminationMessagePolicy: File
volumeMounts:
- mountPath: /var/lib/mysql
name: my-mysql-data
- mountPath: /etc/mysql/mysql.conf.d
name: mysql-conf
- mountPath: /var/run/secrets/kubernetes.io/serviceaccount
name: default-token-zp4x5
readOnly: true
dnsPolicy: ClusterFirst
enableServiceLinks: true
nodeName: develop-worker-1
preemptionPolicy: PreemptLowerPriority
priority: 0
restartPolicy: Always
schedulerName: default-scheduler
securityContext: {}
serviceAccount: default
serviceAccountName: default
terminationGracePeriodSeconds: 30
tolerations:
- effect: NoExecute
key: node.kubernetes.io/not-ready
operator: Exists
tolerationSeconds: 300
- effect: NoExecute
key: node.kubernetes.io/unreachable
operator: Exists
tolerationSeconds: 300
volumes:
- name: my-mysql-data
persistentVolumeClaim:
claimName: my-mysql-data
- configMap:
defaultMode: 420
name: mysql-conf
name: mysql-conf
- name: default-token-zp4x5
secret:
defaultMode: 420
secretName: default-token-zp4x5
status:
conditions:
- lastProbeTime: null
lastTransitionTime: "2021-04-28T03:31:12Z"
status: "True"
type: Initialized
- lastProbeTime: null
lastTransitionTime: "2021-04-28T03:32:47Z"
status: "True"
type: Ready
- lastProbeTime: null
lastTransitionTime: "2021-04-28T03:32:47Z"
status: "True"
type: ContainersReady
- lastProbeTime: null
lastTransitionTime: "2021-04-28T03:31:12Z"
status: "True"
type: PodScheduled
containerStatuses:
- containerID: docker://1e99303f3e6f1ead49da3d14e7a60456c655a038d79ba45d260ffb67d65b687b
image: mysql:8.0.23
imageID: docker-pullable://mysql@sha256:6e0014cdd88092545557dee5e9eb7e1a3c84c9a14ad2418d5f2231e930967a38
lastState: {}
name: my-mysql
ready: true
restartCount: 0
started: true
state:
running:
startedAt: "2021-04-28T03:32:46Z"
hostIP: 192.168.2.165
phase: Running
podIP: 10.0.1.129
podIPs:
- ip: 10.0.1.129
qosClass: Burstable
startTime: "2021-04-28T03:31:12Z"