파드 etcd

1 개요

$ kubectl get no
NAME           STATUS   ROLES           AGE   VERSION
controlplane   Ready    control-plane   16d   v1.29.0
node01         Ready    <none>          16d   v1.29.0

$ kubectl get pod -n kube-system -ojson | jq -r '.items | map(select(.metadata.ownerReferences[]?.kind == "Node" ) | .metadata.name) | .[]'
etcd-controlplane
kube-apiserver-controlplane
kube-controller-manager-controlplane
kube-scheduler-controlplane

$ kubectl get pod -n kube-system etcd-controlplane -oyaml
apiVersion: v1
kind: Pod
metadata:
  annotations:
    kubeadm.kubernetes.io/etcd.advertise-client-urls: https://172.30.1.2:2379
    kubernetes.io/config.hash: a9fb06c3a332674e3dd80789db1e82ef
    kubernetes.io/config.mirror: a9fb06c3a332674e3dd80789db1e82ef
    kubernetes.io/config.seen: "2024-02-04T07:55:46.172344796Z"
    kubernetes.io/config.source: file
  creationTimestamp: "2024-02-04T07:56:07Z"
  labels:
    component: etcd
    tier: control-plane
  name: etcd-controlplane
  namespace: kube-system
  ownerReferences:
  - apiVersion: v1
    controller: true
    kind: Node
    name: controlplane
    uid: 3dc60cbe-4e9b-4852-af95-22542229bf7d
  resourceVersion: "2105"
  uid: 75b7f9ce-5242-4d9c-8ffd-741b8d1d8c94
spec:
  containers:
  - command:
    - etcd
    - --advertise-client-urls=https://172.30.1.2:2379
    - --cert-file=/etc/kubernetes/pki/etcd/server.crt
    - --client-cert-auth=true
    - --data-dir=/var/lib/etcd
    - --experimental-initial-corrupt-check=true
    - --experimental-watch-progress-notify-interval=5s
    - --initial-advertise-peer-urls=https://172.30.1.2:2380
    - --initial-cluster=controlplane=https://172.30.1.2:2380
    - --key-file=/etc/kubernetes/pki/etcd/server.key
    - --listen-client-urls=https://127.0.0.1:2379,https://172.30.1.2:2379
    - --listen-metrics-urls=http://127.0.0.1:2381
    - --listen-peer-urls=https://172.30.1.2:2380
    - --name=controlplane
    - --peer-cert-file=/etc/kubernetes/pki/etcd/peer.crt
    - --peer-client-cert-auth=true
    - --peer-key-file=/etc/kubernetes/pki/etcd/peer.key
    - --peer-trusted-ca-file=/etc/kubernetes/pki/etcd/ca.crt
    - --snapshot-count=10000
    - --trusted-ca-file=/etc/kubernetes/pki/etcd/ca.crt
    image: registry.k8s.io/etcd:3.5.10-0
    imagePullPolicy: IfNotPresent
    livenessProbe:
      failureThreshold: 8
      httpGet:
        host: 127.0.0.1
        path: /health?exclude=NOSPACE&serializable=true
        port: 2381
        scheme: HTTP
      initialDelaySeconds: 10
      periodSeconds: 10
      successThreshold: 1
      timeoutSeconds: 15
    name: etcd
    resources:
      requests:
        cpu: 25m
        memory: 100Mi
    startupProbe:
      failureThreshold: 24
      httpGet:
        host: 127.0.0.1
        path: /health?serializable=false
        port: 2381
        scheme: HTTP
      initialDelaySeconds: 10
      periodSeconds: 10
      successThreshold: 1
      timeoutSeconds: 15
    terminationMessagePath: /dev/termination-log
    terminationMessagePolicy: File
    volumeMounts:
    - mountPath: /var/lib/etcd
      name: etcd-data
    - mountPath: /etc/kubernetes/pki/etcd
      name: etcd-certs
  dnsPolicy: ClusterFirst
  enableServiceLinks: true
  hostNetwork: true
  nodeName: controlplane
  preemptionPolicy: PreemptLowerPriority
  priority: 2000001000
  priorityClassName: system-node-critical
  restartPolicy: Always
  schedulerName: default-scheduler
  securityContext:
    seccompProfile:
      type: RuntimeDefault
  terminationGracePeriodSeconds: 30
  tolerations:
  - effect: NoExecute
    operator: Exists
  volumes:
  - hostPath:
      path: /etc/kubernetes/pki/etcd
      type: DirectoryOrCreate
    name: etcd-certs
  - hostPath:
      path: /var/lib/etcd
      type: DirectoryOrCreate
    name: etcd-data
status:
  conditions:
  - lastProbeTime: null
    lastTransitionTime: "2024-02-21T02:44:50Z"
    status: "True"
    type: PodReadyToStartContainers
  - lastProbeTime: null
    lastTransitionTime: "2024-02-21T02:44:47Z"
    status: "True"
    type: Initialized
  - lastProbeTime: null
    lastTransitionTime: "2024-02-21T02:45:06Z"
    status: "True"
    type: Ready
  - lastProbeTime: null
    lastTransitionTime: "2024-02-21T02:45:06Z"
    status: "True"
    type: ContainersReady
  - lastProbeTime: null
    lastTransitionTime: "2024-02-21T02:44:47Z"
    status: "True"
    type: PodScheduled
  containerStatuses:
  - containerID: containerd://07d8098dfd917b620c1f6ab2260abf00a3459bc74eabf79ec00bdcc6f648e013
    image: registry.k8s.io/etcd:3.5.10-0
    imageID: registry.k8s.io/etcd@sha256:22f892d7672adc0b9c86df67792afdb8b2dc08880f49f669eaaa59c47d7908c2
    lastState:
      terminated:
        containerID: containerd://f2933328ff7296ceab371c3f7806fe333216c244cf47a0f154d7d479e98efafa
        exitCode: 255
        finishedAt: "2024-02-21T02:44:35Z"
        reason: Unknown
        startedAt: "2024-02-04T08:11:05Z"
    name: etcd
    ready: true
    restartCount: 2
    started: true
    state:
      running:
        startedAt: "2024-02-21T02:44:49Z"
  hostIP: 172.30.1.2
  hostIPs:
  - ip: 172.30.1.2
  phase: Running
  podIP: 172.30.1.2
  podIPs:
  - ip: 172.30.1.2
  qosClass: Burstable
  startTime: "2024-02-21T02:44:47Z"

2 같이 보기