tekton task资源

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 目前刚开始写一个月，一共写了18篇原创文章，文章目录如下：

istio多集群探秘，部署了50次多集群后我得出的结论

istio多集群链路追踪，附实操视频

istio防故障利器，你知道几个,istio新手不要读，太难！

istio业务权限控制，原来可以这么玩

istio实现非侵入压缩，微服务之间如何实现压缩

不懂envoyfilter也敢说精通istio系列-http-rbac-不要只会用AuthorizationPolicy配置权限

不懂envoyfilter也敢说精通istio系列-02-http-corsFilter-不要只会vs

不懂envoyfilter也敢说精通istio系列-03-http-csrf filter-再也不用再代码里写csrf逻辑了

不懂envoyfilter也敢说精通istio系列http-jwt_authn-不要只会RequestAuthorization

不懂envoyfilter也敢说精通istio系列-05-fault-filter-故障注入不止是vs

不懂envoyfilter也敢说精通istio系列-06-http-match-配置路由不只是vs

不懂envoyfilter也敢说精通istio系列-07-负载均衡配置不止是dr

不懂envoyfilter也敢说精通istio系列-08-连接池和断路器

不懂envoyfilter也敢说精通istio系列-09-http-route filter

不懂envoyfilter也敢说精通istio系列-network filter-redis proxy

不懂envoyfilter也敢说精通istio系列-network filter-HttpConnectionManager

不懂envoyfilter也敢说精通istio系列-ratelimit-istio ratelimit完全手册

 

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什么是task

A Task is a collection of Steps that you define and arrange in a specific order of execution as part of your continuous integration flow. A Task executes as a Pod on your Kubernetes cluster. A Task is available within a specific namespace, while a ClusterTask is available across the entire cluster.

A Task declaration includes the following elements:

• Parameters

• Resources

• Steps

• Workspaces

• Results

资源详解

steps

name

task/steps/task-name.yaml

apiVersion: tekton.dev/v1beta1
kind: Task
metadata:
  name: hello
spec:
  steps:
    - name: hello
      image: ubuntu
      command:
        - echo
      args:
        - "Hello World!"

tkn task start -f task-name.yaml -n tekton

image

task/steps/task-name.yaml

apiVersion: tekton.dev/v1beta1
kind: Task
metadata:
  name: hello
spec:
  steps:
    - name: hello
      image: ubuntu
      command:
        - echo
      args:
        - "Hello World!"

tkn task start -f task-name.yaml -n tekton

script

task/steps/task-script-shell.yaml

apiVersion: tekton.dev/v1beta1
kind: Task
metadata:
  name: script
spec:
  steps:
  - image: ubuntu 
    script: |
      #!/usr/bin/env bash
      echo "Hello from Bash!"

task/steps/task-script-python.yaml

apiVersion: tekton.dev/v1beta1
kind: Task
metadata:
  name: script
spec:
  steps:
  - image: python  # contains python
    script: |
      #!/usr/bin/env python3
      print("Hello from Python!")

task/steps/task-script-node.yaml

apiVersion: tekton.dev/v1beta1
kind: Task
metadata:
  name: script
spec:
  steps:
  - image: node  # contains node
    script: |
      #!/usr/bin/env node
      console.log("Hello from Node!")

resources

task/steps/task-resources.yaml

apiVersion: tekton.dev/v1beta1
kind: Task
metadata:
  name: resources
spec:
  steps:
  - name: step-with-limts
    image: ubuntu
    command:
    - echo
    args:
    - "Hello World!"
    resources:
      requests:
        memory: 100Mi
        cpu: 10m
      limits:
        memory: 100Mi
        cpu: 10m

timeout

task/steps/task-timeout.yaml

apiVersion: tekton.dev/v1beta1
kind: Task
metadata:
  name: timeout
spec:  
  steps:
  - name: sleep-then-timeout
    image: ubuntu
    script: | 
      #!/usr/bin/env bash
      echo "I am supposed to sleep for 60 seconds!"
      sleep 60
    timeout: 5s

args

task/steps/task-name.yaml

apiVersion: tekton.dev/v1beta1
kind: Task
metadata:
  name: hello
spec:
  steps:
    - name: hello
      image: ubuntu
      command:
        - echo
      args:
        - "Hello World!"

command

task/steps/task-name.yaml

apiVersion: tekton.dev/v1beta1
kind: Task
metadata:
  name: hello
spec:
  steps:
    - name: hello
      image: ubuntu
      command:
        - echo
      args:
        - "Hello World!"

env

plain

task/steps/task-env.yaml

apiVersion: tekton.dev/v1beta1
kind: Task
metadata:
  name: env
spec: 
  steps:
  - image: ubuntu
    command: [echo]
    args: ["FOO is $(FOO)"]
    env:
      - name: "FOO"
        value: "baz"

secret-env

secret.yaml

apiVersion: v1
kind: Secret
metadata:
  name: mysecret
type: Opaque
data:
  username: YWRtaW4=
​

task/steps/task-env-secret.yaml

apiVersion: tekton.dev/v1beta1
kind: Task
metadata:
  name: env
spec:  
  steps:
  - image: ubuntu
    command: [echo]
    args: ["FOO is $(FOO)"]
    env:
      - name: "FOO"
        valueFrom:
          secretKeyRef:
            name: mysecret
            key: username

volumeMounts

task/steps/task-volumeMounts.yaml

apiVersion: tekton.dev/v1beta1
kind: Task
metadata:
  name: volumemounts
spec:   
  steps:
  - image: docker:20.10.5
    name: client
    script: |
        #!/usr/bin/env sh
        cat > Dockerfile << EOF
        FROM ubuntu
        RUN apt-get update
        ENTRYPOINT ["echo", "hello"]
        EOF
        docker build -t hello . && docker run hello
        docker images
    volumeMounts:
      - mountPath: /var/run/docker.sock
        name: docker-socket
  volumes:
    - name: docker-socket
      hostPath:
        path: /var/run/docker.sock
        type: Socket

workingDir

task/steps/task-workingDir.yaml

apiVersion: tekton.dev/v1beta1
kind: Task
metadata:
  name: workingdir
spec:  
  steps:
  - image: ubuntu
    command: [pwd]
    workingDir: /workspace/src/

securityContext

task/steps/task-securityContext.yaml

apiVersion: tekton.dev/v1beta1
kind: Task
metadata:
  name: securitycontext
spec:  
  steps:
  - image: ubuntu
    command: [id]
    securityContext:
      runAsUser: 2000

imagePullPolicy

task/steps/task-imagePullPolicy .yaml

apiVersion: tekton.dev/v1beta1
kind: Task
metadata:
  name: imagepullpolicy 
spec:  
  steps:
  - image: ubuntu
    command: [echo]
    args:
    - hello
    imagePullPolicy: IfNotPresent

workspaces

description

task/task-description.yaml

apiVersion: tekton.dev/v1beta1
kind: Task
metadata:
  name: description 
spec: 
  description:  this is a test task
  steps:
  - image: ubuntu
    command: [echo]
    args:
    - hello
    imagePullPolicy: IfNotPresent

params

array

task/task-params-array.yaml

apiVersion: tekton.dev/v1beta1
kind: Task
metadata:
  name: params-array
spec:
  params:
  - name: array-param
    type: array
    default:
    - a
    - b
    - c
  steps:
  - image: ubuntu
    command: [echo]
    args:
    - "$(params.array-param[*])"
    imagePullPolicy: IfNotPresent

string

task/task-params-string.yaml

apiVersion: tekton.dev/v1beta1
kind: Task
metadata:
  name: params-string 
spec: 
  params:
    - name: directory
      type: string
      description: The directory containing the build context.
      default: /workspace
  steps:
  - image: ubuntu
    command: [pwd]
    workingDir: "$(params.directory)"
    imagePullPolicy: IfNotPresent

tkn task start -f task-params-string.yaml --param=directory=/test -n tekton

resources

task/resources/sa.yaml

apiVersion: v1
kind: ServiceAccount
metadata:
  name: test-task-robot-git-ssh
secrets:
  - name: registry-secret

kubectl create secret docker-registry registry-secret \
       --docker-server=registry.cn-beijing.aliyuncs.com \
       --docker-username=195446040@qq.com \
       --docker-password=123456 -n tekton 

task/resources/res-dockerfile-examples.yaml

apiVersion: tekton.dev/v1alpha1
kind: PipelineResource
metadata:
  name: dockerfile-examples
spec:
  type: git
  params:
    - name: url
      value: https://github.com/13567436138/tekton.git
    - name: revision
      value: main

task/resources/res-my-app-image.yaml

apiVersion: tekton.dev/v1alpha1
kind: PipelineResource
metadata:
  name: my-app-image
spec:
  type: image
  params:
    - name: url
      value: registry.cn-beijing.aliyuncs.com/hxpdocker/tekton-test

task/resources/task-example-task.yaml

apiVersion: tekton.dev/v1beta1
kind: Task
metadata:
  name: example-task
spec:
  params:
    - name: pathToDockerFile
      type: string
      description: The path to the dockerfile to build
      default: /workspace/workspace/
  resources:
    inputs:
      - name: workspace
        type: git
    outputs:
      - name: builtImage
        type: image
  steps:
    - image: docker:20.10.5
      command: ["docker"]
      imagePullPolicy: IfNotPresent
      args: 
      - build
      - --tag 
      - $(resources.outputs.builtImage.url)
      - $(params.pathToDockerFile)
      volumeMounts:
        - name: docker-socket
          mountPath: /var/run/docker.sock
    - name: dockerfile-pushexample
      image: docker:20.10.5
      imagePullPolicy: IfNotPresent
      command: ["docker"]
      args: ["push","$(resources.outputs.builtImage.url)"]
      volumeMounts:
        - name: docker-socket
          mountPath: /var/run/docker.sock

task/resources/taskrun-mytaskrun.yaml

apiVersion: tekton.dev/v1beta1
kind: TaskRun
metadata:
  generateName: mytaskrun-
spec:
  serviceAccountName: test-task-robot-git-ssh
  taskRef:
    name: example-task
  resources:
    inputs:
      - name: workspace
        resourceRef:
          name: dockerfile-examples
    outputs:
      - name: builtImage
        resourceRef:
          name: my-app-image
  podTemplate:
    volumes:
    - name: docker-socket
      hostPath:
        path: /var/run/docker.sock
        type: Socket
    

workspaces

task/task-workspaces.yaml

apiVersion: tekton.dev/v1beta1
kind: Task
metadata:
  name: workspaces
spec:
  steps:
  - name: write-message
    image: ubuntu
    script: |
      #!/usr/bin/env bash
      set -xe
      if [ "$(workspaces.messages.bound)" == "true" ] ; then
        echo hello! > $(workspaces.messages.path)/message
        cat $(workspaces.messages.path)/message
      fi
  workspaces:
  - name: messages
    description: |
      The folder where we write the message to. If no workspace
      is provided then the message will not be written.
    optional: true
    mountPath: /test

task/taskrun-workspaces.yaml

apiVersion: tekton.dev/v1beta1
kind: TaskRun
metadata:
  generateName: workspaces-
spec:
  taskRef:
    name: workspaces
  workspaces:
    - name: messages
      emptyDir: {}

results

task/task-results.yaml

apiVersion: tekton.dev/v1beta1
kind: Task
metadata:
  name: print-date
  annotations:
    description: |
      A simple task that prints the date
spec:
  results:
    - name: current-date-unix-timestamp
      description: The current date in unix timestamp format
    - name: current-date-human-readable
      description: The current date in human readable format
  steps:
    - name: print-date-unix-timestamp
      image: bash:latest
      script: |
        #!/usr/bin/env bash
        date +%s | tee $(results.current-date-unix-timestamp.path)
    - name: print-date-human-readable
      image: bash:latest
      script: |
        #!/usr/bin/env bash
        date | tee $(results.current-date-human-readable.path)
    - name: message
      image: ubuntu
      script: |
        #!/usr/bin/env bash
        set -xe
        ls /tekton/results

volumes

task/task-volumes.yaml

apiVersion: tekton.dev/v1beta1
kind: Task
metadata:
  name: volumes
spec:
  steps:
  - image: docker:20.10.5
    name: client
    script: |
        #!/usr/bin/env sh
        cat > Dockerfile << EOF
        FROM ubuntu
        ENTRYPOINT ["echo", "hello"]
        EOF
        chmod 777 Dockerfile
        docker build -t hello .
    securityContext:
      privileged: true
    volumeMounts:
      - mountPath: /var/run/docker.sock
        name: docker-socket
  volumes:
    - name: docker-socket
      hostPath:
        path: /var/run/docker.sock
        type: Socket

stepTemplate

task/task-stepTemplate.yaml

apiVersion: tekton.dev/v1beta1
kind: Task
metadata:
  name: steptemplate
spec:
  stepTemplate:
    env:
    - name: "FOO"
      value: "bar"
  steps:
  - image: ubuntu
    command: [echo]
    args: ["FOO is $(FOO)"]
  - image: ubuntu
    command: [echo]
    args: ["FOO is $(FOO)"]
    env:
      - name: "FOO"
        value: "baz"

sidecars

task/task-sidecars.yaml

apiVersion: tekton.dev/v1beta1
kind: Task
metadata:
  name: sidecars
spec:
  steps:
  - image: docker
    name: client
    workingDir: /context
    script: |
        #!/usr/bin/env sh
        cat > Dockerfile << EOF
        FROM ubuntu
        ENTRYPOINT ["echo", "hello"]
        EOF
        docker build -t hello . && docker run hello
    securityContext:
      privileged: true
    volumeMounts:
      - mountPath: /var/run/
        name: dind-socket
      - mountPath: /context
        name: context
  sidecars:
  - image: docker:18.05-dind
    name: server
    securityContext:
      privileged: true
    volumeMounts:
      - mountPath: /var/lib/docker
        name: dind-storage
      - mountPath: /var/run/
        name: dind-socket
      - mountPath: /context
        name: context
  volumes:
  - name: dind-storage
    emptyDir: {}
  - name: dind-socket
  - name: context
    emptyDir: {}

ClusterTask

task/clustertask/task-deploy.yaml

apiVersion: tekton.dev/v1beta1
kind: ClusterTask
metadata:
  name: kubectl-deploy
  namespace: default
spec:
  resources:
    inputs:
      - name: workspace
        type: git
  steps:
    - name: kubectl-deploy
      image: registry.cn-shanghai.aliyuncs.com/hxpdocker/kubectl:latest
      script: |
        #!/bin/sh
        kubectl apply -f /workspace/workspace/deployment.yaml
        

task/clustertask/pipeline-my.yaml

apiVersion: tekton.dev/v1beta1
kind: Pipeline
metadata:
  name: mypipeline
spec:
  tasks:
  - name: deploy-app
    taskRef:
      name: kubectl-deploy
      kind: ClusterTask
    resources:
      inputs:
      - name: workspace
        resource: workspace
  resources:
    - name: workspace
      type: git

task/clustertask/pipelinerun-my.yaml

apiVersion: tekton.dev/v1beta1
kind: PipelineRun
metadata:
  generateName: mypipeline-run
spec:
  serviceAccountName: test-task-robot-git-ssh
  pipelineRef:
    name: mypipeline
  resources:
    - name: workspace
      resourceRef: 
        name: workspace