xhxu-mac:~ xhxu$ minikube start 😄 minikube v0.34.1 on darwin (amd64) 🔥 Creating virtualbox VM (CPUs=2, Memory=2048MB, Disk=20000MB) ... 📶 "minikube" IP address is 192.168.99.104 🐳 Configuring Docker as the container runtime ... ✨ Preparing Kubernetes environment ... 🚜 Pulling images required by Kubernetes v1.13.3 ... 🚀 Launching Kubernetes v1.13.3 using kubeadm ... 🔑 Configuring cluster permissions ... 🤔 Verifying component health ..... 💗 kubectl is now configured to use "minikube" 🏄 Done! Thank you for using minikube! xhxu-mac:~ xhxu$ kubectl get nodes NAME STATUS ROLES AGE VERSION minikube Ready master 50m v1.13.3 xhxu-mac:~ xhxu$ kubectl run hw --image=karthequian/helloworld --port=80 deployment.apps "hw" created xhxu-mac:~ xhxu$ kubectl get deployments NAME DESIRED CURRENT UP-TO-DATE AVAILABLE AGE hw 1 1 1 0 10s xhxu-mac:~ xhxu$ kubectl get rs NAME DESIRED CURRENT READY AGE hw-747fddfdb8 1 1 0 16s xhxu-mac:~ xhxu$ kubectl get pods NAME READY STATUS RESTARTS AGE hw-747fddfdb8-7jmpl 0/1 ContainerCreating 0 24s
xhxu-mac:~ xhxu$ kubectl expose deployment hw --type=NodePort service "hw" exposed xhxu-mac:~ xhxu$ kubectl get services NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE hw NodePort 10.109.209.48 <none> 80:30201/TCP 9s kubernetes ClusterIP 10.96.0.1 <none> 443/TCP 56m xhxu-mac:~ xhxu$ minikube service hw 🎉 Opening kubernetes service default/hw in default browser...
xhxu-mac:~ xhxu$ kubectl get all NAME READY STATUS RESTARTS AGE pod/hw-747fddfdb8-7jmpl 1/1 Running 0 1d NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE service/hw NodePort 10.109.209.48 <none> 80:30201/TCP 1d service/kubernetes ClusterIP 10.96.0.1 <none> 443/TCP 2d NAME DESIRED CURRENT UP-TO-DATE AVAILABLE AGE deployment.apps/hw 1 1 1 1 1d NAME DESIRED CURRENT READY AGE replicaset.apps/hw-747fddfdb8 1 1 1 1d xhxu-mac:~ xhxu$ kubectl get deploy/hw -o yaml apiVersion: extensions/v1beta1 kind: Deployment metadata: annotations: deployment.kubernetes.io/revision: "1" creationTimestamp: 2019-03-01T06:15:15Z generation: 1 labels: run: hw name: hw namespace: default resourceVersion: "4354" selfLink: /apis/extensions/v1beta1/namespaces/default/deployments/hw uid: 610a81f5-3be9-11e9-b4d5-0800273e7607 spec: progressDeadlineSeconds: 2147483647 replicas: 1 revisionHistoryLimit: 2147483647 selector: matchLabels: run: hw strategy: rollingUpdate: maxSurge: 1 maxUnavailable: 1 type: RollingUpdate template: metadata: creationTimestamp: null labels: run: hw spec: containers: - image: karthequian/helloworld imagePullPolicy: Always name: hw ports: - containerPort: 80 protocol: TCP resources: {} terminationMessagePath: /dev/termination-log terminationMessagePolicy: File dnsPolicy: ClusterFirst restartPolicy: Always schedulerName: default-scheduler securityContext: {} terminationGracePeriodSeconds: 30 status: availableReplicas: 1 conditions: - lastTransitionTime: 2019-03-01T06:15:15Z lastUpdateTime: 2019-03-01T06:15:15Z message: Deployment has minimum availability. reason: MinimumReplicasAvailable status: "True" type: Available observedGeneration: 1 readyReplicas: 1 replicas: 1 updatedReplicas: 1
xhxu-mac:~ xhxu$ kubectl get deployments NAME DESIRED CURRENT UP-TO-DATE AVAILABLE AGE hw 1 1 1 1 2d xhxu-mac:~ xhxu$ kubectl scale --replicas=3 deploy/hw deployment.extensions "hw" scaled xhxu-mac:~ xhxu$ kubectl get deploy/hw NAME DESIRED CURRENT UP-TO-DATE AVAILABLE AGE hw 3 3 3 3 2d xhxu-mac:~ xhxu$ kubectl get pods NAME READY STATUS RESTARTS AGE hw-747fddfdb8-7jmpl 1/1 Running 0 2d hw-747fddfdb8-c5lf6 1/1 Running 0 49s hw-747fddfdb8-tmrl6 1/1 Running 0 49s
vim helloworld-pod-with-lables.yml apiVersion: v1 kind: Pod metadata: name: helloworld labels: env: production author: karthequian application_type: ui release-version: "1.0" spec: containers: - name: helloworld image: karthequian/helloworld:latest
xhxu-mac:test xhxu$ kubectl create -f helloworld-pod-with-lables.yml pod "helloworld" created xhxu-mac:test xhxu$ kubectl get pods NAME READY STATUS RESTARTS AGE helloworld 1/1 Running 0 21s hw-747fddfdb8-7jmpl 1/1 Running 0 2d hw-747fddfdb8-c5lf6 1/1 Running 0 19m hw-747fddfdb8-tmrl6 1/1 Running 0 19m
xhxu-mac:test xhxu$ kubectl get pods --show-labels NAME READY STATUS RESTARTS AGE LABELS helloworld 1/1 Running 0 1m application_type=ui,author=karthequian,env=production,release-version=1.0 hw-747fddfdb8-7jmpl 1/1 Running 0 2d pod-template-hash=747fddfdb8,run=hw hw-747fddfdb8-c5lf6 1/1 Running 0 20m pod-template-hash=747fddfdb8,run=hw hw-747fddfdb8-tmrl6 1/1 Running 0 20m pod-template-hash=747fddfdb8,run=hw xhxu-mac:test xhxu$ kubectl label po/helloworld app=helloworldapp --overwrite pod "helloworld" labeled xhxu-mac:test xhxu$ kubectl get pods --show-labels NAME READY STATUS RESTARTS AGE LABELS helloworld 1/1 Running 0 1m app=helloworldapp,application_type=ui,author=karthequian,env=production,release-version=1.0 hw-747fddfdb8-7jmpl 1/1 Running 0 2d pod-template-hash=747fddfdb8,run=hw hw-747fddfdb8-c5lf6 1/1 Running 0 20m pod-template-hash=747fddfdb8,run=hw hw-747fddfdb8-tmrl6 1/1 Running 0 20m pod-template-hash=747fddfdb8,run=hw xhxu-mac:test xhxu$ kubectl label pod/helloworld app- pod "helloworld" labeled xhxu-mac:test xhxu$ kubectl get pods --show-labels NAME READY STATUS RESTARTS AGE LABELS helloworld 1/1 Running 0 2m application_type=ui,author=karthequian,env=production,release-version=1.0 hw-747fddfdb8-7jmpl 1/1 Running 0 2d pod-template-hash=747fddfdb8,run=hw hw-747fddfdb8-c5lf6 1/1 Running 0 21m pod-template-hash=747fddfdb8,run=hw hw-747fddfdb8-tmrl6 1/1 Running 0 21m pod-template-hash=747fddfdb8,run=hw
vim sample-infrastructure-with-labels.yml apiVersion: v1 kind: Pod metadata: name: homepage-dev labels: env: development dev-lead: karthik team: web application_type: ui release-version: "12.0" spec: containers: - name: helloworld image: karthequian/helloworld:latest --- apiVersion: v1 kind: Pod metadata: name: homepage-staging labels: env: staging team: web dev-lead: karthik application_type: ui release-version: "12.0" spec: containers: - name: helloworld image: karthequian/helloworld:latest --- apiVersion: v1 kind: Pod metadata: name: homepage-prod labels: env: production team: web dev-lead: karthik application_type: ui release-version: "12.0" spec: containers: - name: helloworld image: karthequian/helloworld:latest --- apiVersion: v1 kind: Pod metadata: name: login-dev labels: env: development team: auth dev-lead: jim application_type: api release-version: "1.0" spec: containers: - name: login image: karthequian/ruby:latest --- apiVersion: v1 kind: Pod metadata: name: login-staging labels: env: staging team: auth dev-lead: jim application_type: api release-version: "1.0" spec: containers: - name: login image: karthequian/ruby:latest --- apiVersion: v1 kind: Pod metadata: name: login-prod labels: env: production team: auth dev-lead: jim application_type: api release-version: "1.0" spec: containers: - name: login image: karthequian/ruby:latest --- apiVersion: v1 kind: Pod metadata: name: cart-dev labels: env: development team: ecommerce dev-lead: carisa application_type: api release-version: "1.0" spec: containers: - name: cart image: karthequian/ruby:latest --- apiVersion: v1 kind: Pod metadata: name: cart-staging labels: env: staging team: ecommerce dev-lead: carisa application_type: api release-version: "1.0" spec: containers: - name: cart image: karthequian/ruby:latest --- apiVersion: v1 kind: Pod metadata: name: cart-prod labels: env: production team: ecommerce dev-lead: carisa application_type: api release-version: "1.0" spec: containers: - name: cart image: karthequian/ruby:latest --- apiVersion: v1 kind: Pod metadata: name: social-dev labels: env: development team: marketing dev-lead: carisa application_type: api release-version: "2.0" spec: containers: - name: social image: karthequian/ruby:latest --- apiVersion: v1 kind: Pod metadata: name: social-staging labels: env: staging team: marketing dev-lead: marketing application_type: api release-version: "1.0" spec: containers: - name: social image: karthequian/ruby:latest --- apiVersion: v1 kind: Pod metadata: name: social-prod labels: env: production team: marketing dev-lead: marketing application_type: api release-version: "1.0" spec: containers: - name: social image: karthequian/ruby:latest --- apiVersion: v1 kind: Pod metadata: name: catalog-dev labels: env: development team: ecommerce dev-lead: daniel application_type: api release-version: "4.0" spec: containers: - name: catalog image: karthequian/ruby:latest --- apiVersion: v1 kind: Pod metadata: name: catalog-staging labels: env: staging team: ecommerce dev-lead: daniel application_type: api release-version: "4.0" spec: containers: - name: catalog image: karthequian/ruby:latest --- apiVersion: v1 kind: Pod metadata: name: catalog-prod labels: env: production team: ecommerce dev-lead: daniel application_type: api release-version: "4.0" spec: containers: - name: catalog image: karthequian/ruby:latest --- apiVersion: v1 kind: Pod metadata: name: quote-dev labels: env: development team: ecommerce dev-lead: amy application_type: api release-version: "2.0" spec: containers: - name: quote image: karthequian/ruby:latest --- apiVersion: v1 kind: Pod metadata: name: quote-staging labels: env: staging team: ecommerce dev-lead: amy application_type: api release-version: "2.0" spec: containers: - name: quote image: karthequian/ruby:latest --- apiVersion: v1 kind: Pod metadata: name: quote-prod labels: env: production team: ecommerce dev-lead: amy application_type: api release-version: "1.0" spec: containers: - name: quote image: karthequian/ruby:latest --- apiVersion: v1 kind: Pod metadata: name: ordering-dev labels: env: development team: purchasing dev-lead: chen application_type: backend release-version: "2.0" spec: containers: - name: ordering image: karthequian/ruby:latest --- apiVersion: v1 kind: Pod metadata: name: ordering-staging labels: env: staging team: purchasing dev-lead: chen application_type: backend release-version: "2.0" spec: containers: - name: ordering image: karthequian/ruby:latest --- apiVersion: v1 kind: Pod metadata: name: ordering-prod labels: env: production team: purchasing dev-lead: chen application_type: backend release-version: "2.0" spec: containers: - name: ordering image: karthequian/ruby:latest ---
xhxu-mac:test xhxu$ kubectl create -f sample-infrastructure-with-labels.yml pod "homepage-dev" created pod "homepage-staging" created pod "homepage-prod" created pod "login-dev" created pod "login-staging" created pod "login-prod" created pod "cart-dev" created pod "cart-staging" created pod "cart-prod" created pod "social-dev" created pod "social-staging" created pod "social-prod" created pod "catalog-dev" created pod "catalog-staging" created pod "catalog-prod" created pod "quote-dev" created pod "quote-staging" created pod "quote-prod" created pod "ordering-dev" created pod "ordering-staging" created pod "ordering-prod" created xhxu-mac:test xhxu$ kubectl get pods --show-labels NAME READY STATUS RESTARTS AGE LABELS cart-dev 0/1 ContainerCreating 0 1m application_type=api,dev-lead=carisa,env=development,release-version=1.0,team=ecommerce cart-prod 0/1 ContainerCreating 0 1m application_type=api,dev-lead=carisa,env=production,release-version=1.0,team=ecommerce cart-staging 1/1 Running 0 1m application_type=api,dev-lead=carisa,env=staging,release-version=1.0,team=ecommerce catalog-dev 0/1 ContainerCreating 0 1m application_type=api,dev-lead=daniel,env=development,release-version=4.0,team=ecommerce catalog-prod 0/1 ContainerCreating 0 1m application_type=api,dev-lead=daniel,env=production,release-version=4.0,team=ecommerce catalog-staging 0/1 ContainerCreating 0 1m application_type=api,dev-lead=daniel,env=staging,release-version=4.0,team=ecommerce helloworld 1/1 Running 0 8m application_type=ui,author=karthequian,env=production,release-version=1.0 homepage-dev 1/1 Running 0 1m application_type=ui,dev-lead=karthik,env=development,release-version=12.0,team=web homepage-prod 1/1 Running 0 1m application_type=ui,dev-lead=karthik,env=production,release-version=12.0,team=web homepage-staging 1/1 Running 0 1m application_type=ui,dev-lead=karthik,env=staging,release-version=12.0,team=web hw-747fddfdb8-7jmpl 1/1 Running 0 2d pod-template-hash=747fddfdb8,run=hw hw-747fddfdb8-c5lf6 1/1 Running 0 27m pod-template-hash=747fddfdb8,run=hw hw-747fddfdb8-tmrl6 1/1 Running 0 27m pod-template-hash=747fddfdb8,run=hw login-dev 1/1 Running 0 1m application_type=api,dev-lead=jim,env=development,release-version=1.0,team=auth login-prod 0/1 ContainerCreating 0 1m application_type=api,dev-lead=jim,env=production,release-version=1.0,team=auth login-staging 0/1 ContainerCreating 0 1m application_type=api,dev-lead=jim,env=staging,release-version=1.0,team=auth ordering-dev 1/1 Running 0 1m application_type=backend,dev-lead=chen,env=development,release-version=2.0,team=purchasing ordering-prod 0/1 ContainerCreating 0 1m application_type=backend,dev-lead=chen,env=production,release-version=2.0,team=purchasing ordering-staging 0/1 ContainerCreating 0 1m application_type=backend,dev-lead=chen,env=staging,release-version=2.0,team=purchasing quote-dev 0/1 ContainerCreating 0 1m application_type=api,dev-lead=amy,env=development,release-version=2.0,team=ecommerce quote-prod 0/1 ContainerCreating 0 1m application_type=api,dev-lead=amy,env=production,release-version=1.0,team=ecommerce quote-staging 0/1 ContainerCreating 0 1m application_type=api,dev-lead=amy,env=staging,release-version=2.0,team=ecommerce social-dev 0/1 ContainerCreating 0 1m application_type=api,dev-lead=carisa,env=development,release-version=2.0,team=marketing social-prod 0/1 ContainerCreating 0 1m application_type=api,dev-lead=marketing,env=production,release-version=1.0,team=marketing social-staging 0/1 ContainerCreating 0 1m application_type=api,dev-lead=marketing,env=staging,release-version=1.0,team=marketing
xhxu-mac:test xhxu$ kubectl get pods --selector env=production NAME READY STATUS RESTARTS AGE cart-prod 0/1 ContainerCreating 0 1m catalog-prod 1/1 Running 0 1m helloworld 1/1 Running 0 9m homepage-prod 1/1 Running 0 1m login-prod 1/1 Running 0 1m ordering-prod 0/1 ContainerCreating 0 1m quote-prod 1/1 Running 0 1m social-prod 0/1 ContainerCreating 0 1m xhxu-mac:test xhxu$ kubectl get pods --selector env=production --show-labels NAME READY STATUS RESTARTS AGE LABELS cart-prod 1/1 Running 0 1m application_type=api,dev-lead=carisa,env=production,release-version=1.0,team=ecommerce catalog-prod 1/1 Running 0 1m application_type=api,dev-lead=daniel,env=production,release-version=4.0,team=ecommerce helloworld 1/1 Running 0 9m application_type=ui,author=karthequian,env=production,release-version=1.0 homepage-prod 1/1 Running 0 1m application_type=ui,dev-lead=karthik,env=production,release-version=12.0,team=web login-prod 1/1 Running 0 1m application_type=api,dev-lead=jim,env=production,release-version=1.0,team=auth ordering-prod 1/1 Running 0 1m application_type=backend,dev-lead=chen,env=production,release-version=2.0,team=purchasing quote-prod 1/1 Running 0 1m application_type=api,dev-lead=amy,env=production,release-version=1.0,team=ecommerce social-prod 0/1 ContainerCreating 0 1m application_type=api,dev-lead=marketing,env=production,release-version=1.0,team=marketing xhxu-mac:test xhxu$ kubectl get pods --selector dev-lead=carisa NAME READY STATUS RESTARTS AGE cart-dev 1/1 Running 0 2m cart-prod 1/1 Running 0 2m cart-staging 1/1 Running 0 2m social-dev 1/1 Running 0 2m
xhxu-mac:test xhxu$ kubectl get pods -l 'release-version in (1.0,2.0)' NAME READY STATUS RESTARTS AGE cart-dev 1/1 Running 0 4m cart-prod 1/1 Running 0 4m cart-staging 1/1 Running 0 4m helloworld 1/1 Running 0 12m login-dev 1/1 Running 0 4m login-prod 1/1 Running 0 4m login-staging 1/1 Running 0 4m ordering-dev 1/1 Running 0 4m ordering-prod 1/1 Running 0 4m ordering-staging 1/1 Running 0 4m quote-dev 1/1 Running 0 4m quote-prod 1/1 Running 0 4m quote-staging 1/1 Running 0 4m social-dev 1/1 Running 0 4m social-prod 1/1 Running 0 4m social-staging 1/1 Running 0 4m xhxu-mac:test xhxu$ kubectl get pods -l 'release-version in (1.0,2.0)' --show-labels NAME READY STATUS RESTARTS AGE LABELS cart-dev 1/1 Running 0 5m application_type=api,dev-lead=carisa,env=development,release-version=1.0,team=ecommerce cart-prod 1/1 Running 0 5m application_type=api,dev-lead=carisa,env=production,release-version=1.0,team=ecommerce cart-staging 1/1 Running 0 5m application_type=api,dev-lead=carisa,env=staging,release-version=1.0,team=ecommerce helloworld 1/1 Running 0 13m application_type=ui,author=karthequian,env=production,release-version=1.0 login-dev 1/1 Running 0 5m application_type=api,dev-lead=jim,env=development,release-version=1.0,team=auth login-prod 1/1 Running 0 5m application_type=api,dev-lead=jim,env=production,release-version=1.0,team=auth login-staging 1/1 Running 0 5m application_type=api,dev-lead=jim,env=staging,release-version=1.0,team=auth ordering-dev 1/1 Running 0 5m application_type=backend,dev-lead=chen,env=development,release-version=2.0,team=purchasing ordering-prod 1/1 Running 0 5m application_type=backend,dev-lead=chen,env=production,release-version=2.0,team=purchasing ordering-staging 1/1 Running 0 5m application_type=backend,dev-lead=chen,env=staging,release-version=2.0,team=purchasing quote-dev 1/1 Running 0 5m application_type=api,dev-lead=amy,env=development,release-version=2.0,team=ecommerce quote-prod 1/1 Running 0 5m application_type=api,dev-lead=amy,env=production,release-version=1.0,team=ecommerce quote-staging 1/1 Running 0 5m application_type=api,dev-lead=amy,env=staging,release-version=2.0,team=ecommerce social-dev 1/1 Running 0 5m application_type=api,dev-lead=carisa,env=development,release-version=2.0,team=marketing social-prod 1/1 Running 0 5m application_type=api,dev-lead=marketing,env=production,release-version=1.0,team=marketing social-staging 1/1 Running 0 5m application_type=api,dev-lead=marketing,env=staging,release-version=1.0,team=marketing xhxu-mac:test xhxu$ kubectl get pods -l 'release-version notin (1.0,2.0)' --show-labels NAME READY STATUS RESTARTS AGE LABELS catalog-dev 1/1 Running 0 5m application_type=api,dev-lead=daniel,env=development,release-version=4.0,team=ecommerce catalog-prod 1/1 Running 0 5m application_type=api,dev-lead=daniel,env=production,release-version=4.0,team=ecommerce catalog-staging 1/1 Running 0 5m application_type=api,dev-lead=daniel,env=staging,release-version=4.0,team=ecommerce homepage-dev 1/1 Running 0 5m application_type=ui,dev-lead=karthik,env=development,release-version=12.0,team=web homepage-prod 1/1 Running 0 5m application_type=ui,dev-lead=karthik,env=production,release-version=12.0,team=web homepage-staging 1/1 Running 0 5m application_type=ui,dev-lead=karthik,env=staging,release-version=12.0,team=web hw-747fddfdb8-7jmpl 1/1 Running 0 2d pod-template-hash=747fddfdb8,run=hw hw-747fddfdb8-c5lf6 1/1 Running 0 32m pod-template-hash=747fddfdb8,run=hw hw-747fddfdb8-tmrl6 1/1 Running 0 32m pod-template-hash=747fddfdb8,run=hw
xhxu-mac:test xhxu$ kubectl get pods --selector dev-lead=karthik,env=staging NAME READY STATUS RESTARTS AGE homepage-staging 1/1 Running 0 3m
取反
xhxu-mac:test xhxu$ kubectl get pods --selector dev-lead!=karthik,env=staging NAME READY STATUS RESTARTS AGE cart-staging 1/1 Running 0 3m catalog-staging 1/1 Running 0 3m login-staging 1/1 Running 0 3m ordering-staging 1/1 Running 0 3m quote-staging 1/1 Running 0 3m social-staging 1/1 Running 0 3m
xhxu-mac:test xhxu$ kubectl get pods --show-labels NAME READY STATUS RESTARTS AGE LABELS cart-dev 1/1 Running 0 6m application_type=api,dev-lead=carisa,env=development,release-version=1.0,team=ecommerce cart-prod 1/1 Running 0 6m application_type=api,dev-lead=carisa,env=production,release-version=1.0,team=ecommerce cart-staging 1/1 Running 0 6m application_type=api,dev-lead=carisa,env=staging,release-version=1.0,team=ecommerce catalog-dev 1/1 Running 0 6m application_type=api,dev-lead=daniel,env=development,release-version=4.0,team=ecommerce catalog-prod 1/1 Running 0 6m application_type=api,dev-lead=daniel,env=production,release-version=4.0,team=ecommerce catalog-staging 1/1 Running 0 6m application_type=api,dev-lead=daniel,env=staging,release-version=4.0,team=ecommerce helloworld 1/1 Running 0 14m application_type=ui,author=karthequian,env=production,release-version=1.0 homepage-dev 1/1 Running 0 6m application_type=ui,dev-lead=karthik,env=development,release-version=12.0,team=web homepage-prod 1/1 Running 0 6m application_type=ui,dev-lead=karthik,env=production,release-version=12.0,team=web homepage-staging 1/1 Running 0 6m application_type=ui,dev-lead=karthik,env=staging,release-version=12.0,team=web hw-747fddfdb8-7jmpl 1/1 Running 0 2d pod-template-hash=747fddfdb8,run=hw hw-747fddfdb8-c5lf6 1/1 Running 0 33m pod-template-hash=747fddfdb8,run=hw hw-747fddfdb8-tmrl6 1/1 Running 0 33m pod-template-hash=747fddfdb8,run=hw login-dev 1/1 Running 0 6m application_type=api,dev-lead=jim,env=development,release-version=1.0,team=auth login-prod 1/1 Running 0 6m application_type=api,dev-lead=jim,env=production,release-version=1.0,team=auth login-staging 1/1 Running 0 6m application_type=api,dev-lead=jim,env=staging,release-version=1.0,team=auth ordering-dev 1/1 Running 0 6m application_type=backend,dev-lead=chen,env=development,release-version=2.0,team=purchasing ordering-prod 1/1 Running 0 6m application_type=backend,dev-lead=chen,env=production,release-version=2.0,team=purchasing ordering-staging 1/1 Running 0 6m application_type=backend,dev-lead=chen,env=staging,release-version=2.0,team=purchasing quote-dev 1/1 Running 0 6m application_type=api,dev-lead=amy,env=development,release-version=2.0,team=ecommerce quote-prod 1/1 Running 0 6m application_type=api,dev-lead=amy,env=production,release-version=1.0,team=ecommerce quote-staging 1/1 Running 0 6m application_type=api,dev-lead=amy,env=staging,release-version=2.0,team=ecommerce social-dev 1/1 Running 0 6m application_type=api,dev-lead=carisa,env=development,release-version=2.0,team=marketing social-prod 1/1 Running 0 6m application_type=api,dev-lead=marketing,env=production,release-version=1.0,team=marketing social-staging 1/1 Running 0 6m application_type=api,dev-lead=marketing,env=staging,release-version=1.0,team=marketing xhxu-mac:test xhxu$ kubectl delete pods -l dev-lead=karthik pod "homepage-dev" deleted pod "homepage-prod" deleted pod "homepage-staging" deleted xhxu-mac:test xhxu$ kubectl get pods --show-labels NAME READY STATUS RESTARTS AGE LABELS cart-dev 1/1 Running 0 7m application_type=api,dev-lead=carisa,env=development,release-version=1.0,team=ecommerce cart-prod 1/1 Running 0 7m application_type=api,dev-lead=carisa,env=production,release-version=1.0,team=ecommerce cart-staging 1/1 Running 0 7m application_type=api,dev-lead=carisa,env=staging,release-version=1.0,team=ecommerce catalog-dev 1/1 Running 0 7m application_type=api,dev-lead=daniel,env=development,release-version=4.0,team=ecommerce catalog-prod 1/1 Running 0 7m application_type=api,dev-lead=daniel,env=production,release-version=4.0,team=ecommerce catalog-staging 1/1 Running 0 7m application_type=api,dev-lead=daniel,env=staging,release-version=4.0,team=ecommerce helloworld 1/1 Running 0 14m application_type=ui,author=karthequian,env=production,release-version=1.0 homepage-dev 0/1 Terminating 0 7m application_type=ui,dev-lead=karthik,env=development,release-version=12.0,team=web homepage-prod 0/1 Terminating 0 7m application_type=ui,dev-lead=karthik,env=production,release-version=12.0,team=web homepage-staging 0/1 Terminating 0 7m application_type=ui,dev-lead=karthik,env=staging,release-version=12.0,team=web hw-747fddfdb8-7jmpl 1/1 Running 0 2d pod-template-hash=747fddfdb8,run=hw hw-747fddfdb8-c5lf6 1/1 Running 0 34m pod-template-hash=747fddfdb8,run=hw hw-747fddfdb8-tmrl6 1/1 Running 0 34m pod-template-hash=747fddfdb8,run=hw login-dev 1/1 Running 0 7m application_type=api,dev-lead=jim,env=development,release-version=1.0,team=auth login-prod 1/1 Running 0 7m application_type=api,dev-lead=jim,env=production,release-version=1.0,team=auth login-staging 1/1 Running 0 7m application_type=api,dev-lead=jim,env=staging,release-version=1.0,team=auth ordering-dev 1/1 Running 0 7m application_type=backend,dev-lead=chen,env=development,release-version=2.0,team=purchasing ordering-prod 1/1 Running 0 7m application_type=backend,dev-lead=chen,env=production,release-version=2.0,team=purchasing ordering-staging 1/1 Running 0 7m application_type=backend,dev-lead=chen,env=staging,release-version=2.0,team=purchasing quote-dev 1/1 Running 0 7m application_type=api,dev-lead=amy,env=development,release-version=2.0,team=ecommerce quote-prod 1/1 Running 0 7m application_type=api,dev-lead=amy,env=production,release-version=1.0,team=ecommerce quote-staging 1/1 Running 0 7m application_type=api,dev-lead=amy,env=staging,release-version=2.0,team=ecommerce social-dev 1/1 Running 0 7m application_type=api,dev-lead=carisa,env=development,release-version=2.0,team=marketing social-prod 1/1 Running 0 7m application_type=api,dev-lead=marketing,env=production,release-version=1.0,team=marketing social-staging 1/1 Running 0 7m application_type=api,dev-lead=marketing,env=staging,release-version=1.0,team=marketing
vim helloworld-with-probes.yml apiVersion: apps/v1beta1 kind: Deployment metadata: name: helloworld-deployment-with-probe spec: selector: matchLabels: app: helloworld replicas: 1 # tells deployment to run 1 pods matching the template template: # create pods using pod definition in this template metadata: labels: app: helloworld spec: containers: - name: helloworld image: karthequian/helloworld:latest ports: - containerPort: 80 readinessProbe: # length of time to wait for a pod to initialize # after pod startup, before applying health checking initialDelaySeconds: 10 # Amount of time to wait before timing out initialDelaySeconds: 1 # Probe for http httpGet: # Path to probe path: / # Port to probe port: 80 livenessProbe: # length of time to wait for a pod to initialize # after pod startup, before applying health checking initialDelaySeconds: 10 # Amount of time to wait before timing out timeoutSeconds: 1 # Probe for http httpGet: # Path to probe path: / # Port to probe port: 80
xhxu-mac:test xhxu$ kubectl create -f helloworld-with-probes.yml' xhxu-mac:test xhxu$ kubectl get deployments NAME DESIRED CURRENT UP-TO-DATE AVAILABLE AGE helloworld-deployment-with-probe 1 1 1 0 9s xhxu-mac:test xhxu$ kubectl get pods NAME READY STATUS RESTARTS AGE helloworld-deployment-with-probe-58b85784c-xnz2r 1/1 Running 0 15s
这里端口错误，设置成90
vim helloworld-with-bad-liveness-probe.yml apiVersion: apps/v1beta1 kind: Deployment metadata: name: helloworld-deployment-with-bad-liveness-probe spec: selector: matchLabels: app: helloworld replicas: 1 # tells deployment to run 1 pods matching the template template: # create pods using pod definition in this template metadata: labels: app: helloworld spec: containers: - name: helloworld image: karthequian/helloworld:latest ports: - containerPort: 80 livenessProbe: # length of time to wait for a pod to initialize # after pod startup, before applying health checking initialDelaySeconds: 10 # How often (in seconds) to perform the probe. periodSeconds: 5 # Amount of time to wait before timing out timeoutSeconds: 1 # Kubernetes will try failureThreshold times before giving up and restarting the Pod failureThreshold: 2 # Probe for http httpGet: # Path to probe path: / # Port to probe port: 90
xhxu-mac:test xhxu$ kubectl get deployments NAME DESIRED CURRENT UP-TO-DATE AVAILABLE AGE helloworld-deployment-with-bad-liveness-probe 1 1 1 1 50s helloworld-deployment-with-probe 1 1 1 1 12m
xhxu-mac:test xhxu$ kubectl describe helloworld-deployment-with-bad-liveness-probe-5bbc87b8db-rw9zh error: the server doesn't have a resource type "helloworld-deployment-with-bad-liveness-probe-5bbc87b8db-rw9zh" xhxu-mac:test xhxu$ kubectl describe pods/helloworld-deployment-with-bad-liveness-probe-5bbc87b8db-rw9zh Name: helloworld-deployment-with-bad-liveness-probe-5bbc87b8db-rw9zh Namespace: default Priority: 0 PriorityClassName: <none> Node: minikube/10.0.2.15 Start Time: Sun, 03 Mar 2019 15:39:45 +0800 Labels: app=helloworld pod-template-hash=5bbc87b8db Annotations: <none> Status: Running IP: 172.17.0.5 Controlled By: ReplicaSet/helloworld-deployment-with-bad-liveness-probe-5bbc87b8db Containers: helloworld: Container ID: docker://11986fd2b5d87f85863e1d3b644a354b595b60799924ac922b4f23a8a3e37bd0 Image: karthequian/helloworld:latest Image ID: docker-pullable://karthequian/helloworld@sha256:745af01b498d71c954dd3f11930918800de1bd89182b7415809a21d194872e88 Port: 80/TCP Host Port: 0/TCP State: Waiting Reason: CrashLoopBackOff Last State: Terminated Reason: Completed Exit Code: 0 Started: Sun, 03 Mar 2019 15:41:10 +0800 Finished: Sun, 03 Mar 2019 15:41:26 +0800 Ready: False Restart Count: 4 Liveness: http-get http://:90/ delay=10s timeout=1s period=5s #success=1 #failure=2 Environment: <none> Mounts: /var/run/secrets/kubernetes.io/serviceaccount from default-token-47q5g (ro) Conditions: Type Status Initialized True Ready False ContainersReady False PodScheduled True Volumes: default-token-47q5g: Type: Secret (a volume populated by a Secret) SecretName: default-token-47q5g Optional: false QoS Class: BestEffort Node-Selectors: <none> Tolerations: node.kubernetes.io/not-ready:NoExecute for 300s node.kubernetes.io/unreachable:NoExecute for 300s Events: Type Reason Age From Message ---- ------ ---- ---- ------- Normal Scheduled 1m default-scheduler Successfully assigned default/helloworld-deployment-with-bad-liveness-probe-5bbc87b8db-rw9zh to minikube Normal Pulling 52s (x4 over 1m) kubelet, minikube pulling image "karthequian/helloworld:latest" Warning Unhealthy 52s (x6 over 1m) kubelet, minikube Liveness probe failed: Get http://172.17.0.5:90/: dial tcp 172.17.0.5:90: connect: connection refused Normal Killing 52s (x3 over 1m) kubelet, minikube Killing container with id docker://helloworld:Container failed liveness probe.. Container will be killed and recreated. Normal Pulled 49s (x4 over 1m) kubelet, minikube Successfully pulled image "karthequian/helloworld:latest" Normal Created 49s (x4 over 1m) kubelet, minikube Created container Normal Started 49s (x4 over 1m) kubelet, minikube Started container
vim helloworld-black.yml apiVersion: apps/v1beta1 kind: Deployment metadata: name: navbar-deployment spec: selector: matchLabels: app: helloworld replicas: 3 # tells deployment to run 3 pods matching the template template: # create pods using pod definition in this template metadata: labels: app: helloworld spec: containers: - name: helloworld image: karthequian/helloworld:black ports: - containerPort: 80 --- apiVersion: v1 kind: Service metadata: name: navbar-service spec: # if your cluster supports it, uncomment the following to automatically create # an external load-balanced IP for the frontend service. type: NodePort ports: - port: 80 protocol: TCP targetPort: 80 selector: app: helloworld
xhxu-mac:test xhxu$ kubectl create -f helloworld-black.yml --record deployment.apps "navbar-deployment" created service "navbar-service" created xhxu-mac:test xhxu$ kubectl get service NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE kubernetes ClusterIP 10.96.0.1 <none> 443/TCP 51s navbar-service NodePort 10.108.47.218 <none> 80:30683/TCP 42s xhxu-mac:test xhxu$ minikube service navbar-service 🎉 Opening kubernetes service default/navbar-service in default browser...
打开浏览器看到页面内容
更新背景色为蓝色
xhxu-mac:test xhxu$ kubectl set image deployment/navbar-deployment helloworld=karthequian/helloworld:blue deployment.apps "navbar-deployment" image updated xhxu-mac:test xhxu$ kubectl get deployments NAME DESIRED CURRENT UP-TO-DATE AVAILABLE AGE navbar-deployment 3 4 1 3 2m
恢复到之前版本
xhxu-mac:test xhxu$ kubectl rollout history deployment/navbar-deployment deployments "navbar-deployment" REVISION CHANGE-CAUSE 1 kubectl create --filename=helloworld-black.yml --record=true 2 kubectl set image deployment/navbar-deployment helloworld=karthequian/helloworld:blue xhxu-mac:test xhxu$ xhxu-mac:test xhxu$ kubectl rollout undo deployment/navbar-deployment deployment.apps "navbar-deployment"
vim guestbook.yml
apiVersion: v1 kind: Service metadata: name: redis-master labels: app: redis tier: backend role: master spec: ports: - port: 6379 targetPort: 6379 selector: app: redis tier: backend role: master --- apiVersion: extensions/v1beta1 kind: Deployment metadata: name: redis-master spec: replicas: 1 template: metadata: labels: app: redis role: master tier: backend spec: containers: - name: master image: gcr.io/google_containers/redis:e2e # or just image: redis resources: requests: cpu: 100m memory: 100Mi ports: - containerPort: 6379 --- apiVersion: v1 kind: Service metadata: name: redis-slave labels: app: redis tier: backend role: slave spec: ports: - port: 6379 selector: app: redis tier: backend role: slave --- apiVersion: extensions/v1beta1 kind: Deployment metadata: name: redis-slave spec: replicas: 2 template: metadata: labels: app: redis role: slave tier: backend spec: containers: - name: slave image: gcr.io/google_samples/gb-redisslave:v1 resources: requests: cpu: 100m memory: 100Mi env: - name: GET_HOSTS_FROM value: dns # If your cluster config does not include a dns service, then to # instead access an environment variable to find the master # service's host, comment out the 'value: dns' line above, and # uncomment the line below: # value: env ports: - containerPort: 6379 --- apiVersion: v1 kind: Service metadata: name: frontend labels: app: guestbook tier: frontend spec: type: NodePort ports: - port: 80 selector: app: guestbook tier: frontend --- apiVersion: extensions/v1beta1 kind: Deployment metadata: name: frontend spec: replicas: 3 template: metadata: labels: app: guestbook tier: frontend spec: containers: - name: php-redis image: gcr.io/google-samples/gb-frontend:v4 resources: requests: cpu: 100m memory: 100Mi env: - name: GET_HOSTS_FROM value: dns # If your cluster config does not include a dns service, then to # instead access environment variables to find service host # info, comment out the 'value: dns' line above, and uncomment the # line below: # value: env ports: - containerPort: 80
xhxu-mac:test xhxu$ kubectl get deployments NAME DESIRED CURRENT UP-TO-DATE AVAILABLE AGE frontend 3 3 3 0 23s redis-master 1 1 1 0 23s redis-slave 2 2 2 0 23s xhxu-mac:test xhxu$ kubectl get services NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE frontend NodePort 10.105.81.29 <none> 80:32355/TCP 46s kubernetes ClusterIP 10.96.0.1 <none> 443/TCP 52s redis-master ClusterIP 10.102.41.68 <none> 6379/TCP 46s redis-slave ClusterIP 10.101.52.152 <none> 6379/TCP 46s xhxu-mac:test xhxu$ minikube service frontend 🎉 Opening kubernetes service default/frontend in default browser...
xhxu-mac:test xhxu$ minikube addons list - addon-manager: enabled - dashboard: disabled - default-storageclass: enabled - efk: disabled - freshpod: disabled - gvisor: disabled - heapster: disabled - ingress: disabled - logviewer: disabled - metrics-server: disabled - nvidia-driver-installer: disabled - nvidia-gpu-device-plugin: disabled - registry: disabled - registry-creds: disabled - storage-provisioner: enabled - storage-provisioner-gluster: disabled xhxu-mac:test xhxu$ minikube addons enable dashboard ✅ dashboard was successfully enabled xhxu-mac:test xhxu$ minikube addons enable heapster ✅ heapster was successfully enabled xhxu-mac:test xhxu$ minikube addons list - addon-manager: enabled - dashboard: enabled - default-storageclass: enabled - efk: disabled - freshpod: disabled - gvisor: disabled - heapster: enabled - ingress: disabled - logviewer: disabled - metrics-server: disabled - nvidia-driver-installer: disabled - nvidia-gpu-device-plugin: disabled - registry: disabled - registry-creds: disabled - storage-provisioner: enabled - storage-provisioner-gluster: disabled xhxu-mac:test xhxu$ minikube dashboard 🔌 Enabling dashboard ... 🤔 Verifying dashboard health ... 🚀 Launching proxy ... 🤔 Verifying proxy health ... 🎉 Opening http://127.0.0.1:54649/api/v1/namespaces/kube-system/services/http:kubernetes-dashboard:/proxy/ in your default browser...
动态传递data
vim reader-deployment.yml apiVersion: extensions/v1beta1 kind: Deployment metadata: name: logreader spec: replicas: 1 template: metadata: labels: name: logreader spec: containers: - name: logreader image: karthequian/reader:latest env: - name: log_level value: "error"
这里传递了env 里面的参数
xhxu-mac:test xhxu$ kubectl get pods NAME READY STATUS RESTARTS AGE logreader-86bfcfbf76-4ghzs 1/1 Running 0 38s xhxu-mac:test xhxu$ kubectl logs logreader-86bfcfbf76-4ghzs Log level passed via env variables was: 'error' Log level passed via env variables was: 'error' Log level passed via env variables was: 'error' Log level passed via env variables was: 'error' Log level passed via env variables was: 'error'
通过configmap 修改输出
xhxu-mac:test xhxu$ kubectl create configmap logger --from-literal=log_level=debug configmap "logger" created xhxu-mac:test xhxu$ vim reader-configmap-deployment.yml
apiVersion: extensions/v1beta1 kind: Deployment metadata: name: logreader-dynamic spec: replicas: 1 template: metadata: labels: name: logreader-dynamic spec: containers: - name: logreader image: karthequian/reader:latest env: - name: log_level valueFrom: configMapKeyRef: name: logger #Read from a configmap called log-level key: log_level #Read the key called log_level
xhxu-mac:test xhxu$ kubectl create -f reader-configmap-deployment.yml deployment.extensions "logreader-dynamic" created xhxu-mac:test xhxu$ kubectl get configmaps NAME DATA AGE logger 1 1m xhxu-mac:test xhxu$ kubectl get configmap/logger -o yaml apiVersion: v1 data: log_level: debug kind: ConfigMap metadata: creationTimestamp: 2019-03-03T09:07:11Z name: logger namespace: default resourceVersion: "78987" selfLink: /api/v1/namespaces/default/configmaps/logger uid: ba88bdbd-3d93-11e9-9f7b-0800273e7607
xhxu-mac:test xhxu$ kubectl get pods NAME READY STATUS RESTARTS AGE logreader-86bfcfbf76-4ghzs 1/1 Running 0 4m logreader-dynamic-f49f5fcdb-nl7dt 1/1 Running 0 1m xhxu-mac:test xhxu$ kubectl logs logreader-dynamic-f49f5fcdb-nl7dt Log level passed via env variables was: 'debug' Log level passed via env variables was: 'debug' Log level passed via env variables was: 'debug' Log level passed via env variables was: 'debug' Log level passed via env variables was: 'debug' Log level passed via env variables was: 'debug' Log level passed via env variables was: 'debug' Log level passed via env variables was: 'debug' Log level passed via env variables was: 'debug' Log level passed via env variables was: 'debug' Log level passed via env variables was: 'debug' Log level passed via env variables was: 'debug' Log level passed via env variables was: 'debug' Log level passed via env variables was: 'debug' Log level passed via env variables was: 'debug' Log level passed via env variables was: 'debug' Log level passed via env variables was: 'debug'
这里的输出变了
xhxu-mac:test xhxu$ kubectl create secret generic apikey --from-literal=api_key=123456 secret "apikey" created xhxu-mac:test xhxu$ kubectl get secrets NAME TYPE DATA AGE apikey Opaque 1 18s default-token-47q5g kubernetes.io/service-account-token 3 2d xhxu-mac:test xhxu$ kubectl get secret apikey NAME TYPE DATA AGE apikey Opaque 1 31s xhxu-mac:test xhxu$ kubectl get secret apikey -o yaml apiVersion: v1 data: api_key: MTIzNDU2 kind: Secret metadata: creationTimestamp: 2019-03-03T09:25:49Z name: apikey namespace: default resourceVersion: "80356" selfLink: /api/v1/namespaces/default/secrets/apikey uid: 5526b626-3d96-11e9-9f7b-0800273e7607 type: Opaque
部署secret reader
vim secretreader-deployment.yaml apiVersion: extensions/v1beta1 kind: Deployment metadata: name: secretreader spec: replicas: 1 template: metadata: labels: name: secretreader spec: containers: - name: secretreader image: karthequian/secretreader:latest env: - name: api_key valueFrom: secretKeyRef: name: apikey key: api_key
deployment.extensions "secretreader" created xhxu-mac:test xhxu$ kubectl get pods NAME READY STATUS RESTARTS AGE logreader-86bfcfbf76-4ghzs 1/1 Running 0 2h logreader-dynamic-f49f5fcdb-nl7dt 1/1 Running 0 2h secretreader-554bbcd469-xfthd 1/1 Running 0 10s xhxu-mac:test xhxu$ kubectl logs secretreader-554bbcd469-xfthd api_key passed via env variable was: '123456' api_key passed via env variable was: '123456' api_key passed via env variable was: '123456'
vim simplejob.yaml apiVersion: batch/v1 kind: Job metadata: name: finalcountdown spec: template: metadata: name: finalcountdown spec: containers: - name: counter image: busybox command: - bin/sh - -c - "for i in 9 8 7 6 5 4 3 2 1 ; do echo $i ; done" restartPolicy: Never #could also be Always or OnFailure
xhxu-mac:test xhxu$ kubectl get jobs NAME DESIRED SUCCESSFUL AGE finalcountdown 1 1 13s xhxu-mac:test xhxu$ kubectl get pods NAME READY STATUS RESTARTS AGE finalcountdown-xgwpk 0/1 Completed 0 37s xhxu-mac:test xhxu$ kubectl get pods --show-all Flag --show-all has been deprecated, will be removed in an upcoming release NAME READY STATUS RESTARTS AGE finalcountdown-xgwpk 0/1 Completed 0 45s logreader-86bfcfbf76-4ghzs 1/1 Running 0 2h logreader-dynamic-f49f5fcdb-nl7dt 1/1 Running 0 2h secretreader-554bbcd469-xfthd 1/1 Running 0 3m xhxu-mac:test xhxu$ kubectl logs finalcountdown-xgwpk 9 8 7 6 5 4 3 2 1
vim cronjob.yaml apiVersion: batch/v1beta1 kind: CronJob metadata: name: hellocron spec: schedule: "*/1 * * * *" #Runs every minute (cron syntax) or @hourly. jobTemplate: spec: template: spec: containers: - name: hellocron image: busybox args: - /bin/sh - -c - date; echo Hello from your Kubernetes cluster restartPolicy: OnFailure #could also be Always or Never suspend: false #Set to true if you want to suspend in the future
xhxu-mac:test xhxu$ kubectl create -f cronjob.yaml cronjob.batch "hellocron" created xhxu-mac:test xhxu$ kubectl get cronjobs NAME SCHEDULE SUSPEND ACTIVE LAST SCHEDULE AGE hellocron */1 * * * * False 0 <none> 13s xhxu-mac:test xhxu$ kubectl edit cronjobs/hellocron cronjob.batch "hellocron" edited # 修改如下 + suspend: true - suspend: false xhxu-mac:test xhxu$ kubectl get cronjobs NAME SCHEDULE SUSPEND ACTIVE LAST SCHEDULE AGE hellocron */1 * * * * True 0 32s 2m
运行daemonset
vim daemonset.yaml apiVersion: apps/v1beta2 kind: DaemonSet metadata: name: example-daemonset namespace: default labels: k8s-app: example-daemonset spec: selector: matchLabels: name: example-daemonset template: metadata: labels: name: example-daemonset spec: #nodeSelector: minikube # Specify if you want to run on specific nodes containers: - name: example-daemonset image: busybox args: - /bin/sh - -c - date; sleep 1000 resources: limits: memory: 200Mi requests: cpu: 100m memory: 200Mi terminationGracePeriodSeconds: 30
xhxu-mac:test xhxu$ kubectl create -f daemonset.yaml daemonset.apps "example-daemonset" created xhxu-mac:test xhxu$ kubectl get daemonsets NAME DESIRED CURRENT READY UP-TO-DATE AVAILABLE NODE SELECTOR AGE example-daemonset 1 1 1 1 1 <none> 12s xhxu-mac:test xhxu$ kubectl get pods NAME READY STATUS RESTARTS AGE example-daemonset-dchr2 1/1 Running 0 20s finalcountdown-xgwpk 0/1 Completed 0 10m hellocron-1551613860-rthrc 0/1 Completed 0 6m hellocron-1551613920-sc4sc 0/1 Completed 0 5m logreader-86bfcfbf76-4ghzs 1/1 Running 0 2h logreader-dynamic-f49f5fcdb-nl7dt 1/1 Running 0 2h secretreader-554bbcd469-xfthd 1/1 Running 0 13m xhxu-mac:test xhxu$ kubectl get nodes --show-labels NAME STATUS ROLES AGE VERSION LABELS minikube Ready master 2d v1.13.3 beta.kubernetes.io/arch=amd64,beta.kubernetes.io/os=linux,kubernetes.io/hostname=minikube,node-role.kubernetes.io/master=
nodeSelector: development
vim daemonset-infra-development.yaml apiVersion: apps/v1beta2 kind: DaemonSet metadata: name: example-daemonset2 namespace: default labels: k8s-app: example-daemonset2 spec: selector: matchLabels: name: example-daemonset2 template: metadata: labels: name: example-daemonset2 spec: containers: - name: example-daemonset2 image: busybox args: - /bin/sh - -c - date; sleep 1000 resources: limits: memory: 200Mi requests: cpu: 100m memory: 200Mi terminationGracePeriodSeconds: 30 nodeSelector: infra: "development"
nodeSelector: production
vim daemonset-infra-prod.yaml apiVersion: apps/v1beta2 kind: DaemonSet metadata: name: prod-daemonset namespace: default labels: k8s-app: prod-daemonset spec: selector: matchLabels: name: prod-daemonset template: metadata: labels: name: prod-daemonset spec: containers: - name: prod-daemonset image: busybox args: - /bin/sh - -c - date; sleep 1000 resources: limits: memory: 200Mi requests: cpu: 100m memory: 200Mi terminationGracePeriodSeconds: 30 nodeSelector: infra: "production"
xhxu-mac:test xhxu$ kubectl create -f daemonset-infra-prod.yaml daemonset.apps "prod-daemonset" created xhxu-mac:test xhxu$ kubectl get daemonsets NAME DESIRED CURRENT READY UP-TO-DATE AVAILABLE NODE SELECTOR AGE example-daemonset 1 1 1 1 1 <none> 11m example-daemonset2 0 0 0 0 0 infra=development 8m prod-daemonset 0 0 0 0 0 infra=production 7s xhxu-mac:test xhxu$ kubectl get nodes --show-labels NAME STATUS ROLES AGE VERSION LABELS minikube Ready master 2d v1.13.3 beta.kubernetes.io/arch=amd64,beta.kubernetes.io/os=linux,kubernetes.io/hostname=minikube,node-role.kubernetes.io/master=
vim statefulset.yaml apiVersion: v1 kind: Service metadata: name: zk-cs labels: app: zk spec: ports: - port: 2181 name: client selector: app: zk --- apiVersion: apps/v1beta1 kind: StatefulSet metadata: name: zk spec: serviceName: zk-hs replicas: 1 podManagementPolicy: Parallel updateStrategy: type: RollingUpdate template: metadata: labels: app: zk spec: affinity: podAntiAffinity: requiredDuringSchedulingIgnoredDuringExecution: - labelSelector: matchExpressions: - key: "app" operator: In values: - none topologyKey: "kubernetes.io/hostname" containers: - name: kubernetes-zookeeper imagePullPolicy: Always image: "gcr.io/google_containers/kubernetes-zookeeper:1.0-3.4.10" resources: requests: memory: "500Mi" cpu: "0.5" ports: - containerPort: 2181 name: client - containerPort: 2888 name: server - containerPort: 3888 name: leader-election command: - sh - -c - "start-zookeeper \ --servers=1 \ --data_dir=/var/lib/zookeeper/data \ --data_log_dir=/var/lib/zookeeper/data/log \ --conf_dir=/opt/zookeeper/conf \ --client_port=2181 \ --election_port=3888 \ --server_port=2888 \ --tick_time=2000 \ --init_limit=10 \ --sync_limit=5 \ --heap=512M \ --max_client_cnxns=60 \ --snap_retain_count=3 \ --purge_interval=12 \ --max_session_timeout=40000 \ --min_session_timeout=4000 \ --log_level=INFO" readinessProbe: exec: command: - sh - -c - "zookeeper-ready 2181" initialDelaySeconds: 10 timeoutSeconds: 5 livenessProbe: exec: command: - sh - -c - "zookeeper-ready 2181" initialDelaySeconds: 10 timeoutSeconds: 5 volumeMounts: - name: datadir mountPath: /var/lib/zookeeper securityContext: runAsUser: 1000 fsGroup: 1000 volumeClaimTemplates: - metadata: name: datadir spec: accessModes: [ "ReadWriteOnce" ] resources: requests: storage: 10Gi
xhxu-mac:test xhxu$ kubectl create -f statefulset.yaml service "zk-cs" created statefulset.apps "zk" created xhxu-mac:test xhxu$ kubectl get statefulsets NAME DESIRED CURRENT AGE zk 1 1 13s xhxu-mac:test xhxu$ kubectl get pods zk-0 0/1 ContainerCreating 0 1m