Setting a container in Kubernetes with cloudbuild.yaml error: unable to find container named "XXX" error

Question

第一次在 Google Cloud Platform 中创建管道。

我一直在按照他们的指南进行操作，最后一步我想将构建容器设置到 Kubernetes 集群中。

这是我在最后一步失败的 yaml 文件。

steps:

  # This steps clone the repository into GCP
  - name: gcr.io/cloud-builders/git
    args: ['clone', 'https://<user>:<password>@github.com/PatrickVibild/scrappercontroller']

  # This step runs the unit tests on the app
  - name: 'docker.io/library/python:3.7'
    id: Test
    entrypoint: /bin/sh
    args:
      - -c
      - 'pip install -r requirements.txt && python -m pytest app/tests/**'

  #This step creates a container and leave it on CloudBuilds repository.
  - name: 'gcr.io/cloud-builders/docker'
    args: ['build', '-t', 'gcr.io/abiding-robot-255320/scrappercontroller', '.']

  #Adds the container to Google container registry as an artefact
  - name: 'gcr.io/cloud-builders/docker'
    args: ['push', 'gcr.io/abiding-robot-255320/scrappercontroller']

  #Uses the container and replaces the existing one in Kubernetes
  - name: 'gcr.io/cloud-builders/kubectl'
    args: ['set', 'image', 'deployment/scrapper-config', 'scrappercontroller=gcr.io/abiding-robot-255320/scrappercontroller']
    env:
      - 'CLOUDSDK_COMPUTE_ZONE=us-central1-a'
      - 'CLOUDSDK_CONTAINER_CLUSTER=n1scrapping'

我一直在使用 GCP 指南

- name: 'gcr.io/cloud-builders/kubectl'
  args: ['set', 'image', 'deployment/myimage', 'frontend=gcr.io/myproject/myimage']
  env:
  - 'CLOUDSDK_COMPUTE_ZONE=us-east1-b'
  - 'CLOUDSDK_CONTAINER_CLUSTER=node-example-cluster'

但我不知道在最后一个参数中我必须替换什么。 frontend=gcr.io/myproject/myimage 就我而言。

此外，我的目的是更换 kubernetes 上运行的容器，如果这有助于发现任何问题。

感谢您的帮助！

Answer 1

根据标题我猜你会在 CloudBuild 日志中看到这样的消息：

+ kubectl set image deployment/scrapper-config scrappercontroller=gcr.io/abiding-robot-255320/scrappercontroller
error: unable to find container named "scrappercontroller"

I dont know what do I have to replace in the last argument. frontend=gcr.io/myproject/myimage in my case.

这个参数的意思是<container_name>=<image_ref>.
您将此值设置为 scrappercontroller=gcr.io/abiding-robot-255320/scrappercontroller.
这意味着："set the image for the 'scrappercontroller' container in my Pods to this image from GCR".

您可以通过运行 kubectl set image --help:

了解更多信息

Update existing container image(s) of resources.

 Possible resources include (case insensitive):

  pod (po), replicationcontroller (rc), deployment (deploy), daemonset (ds), replicaset (rs)

Examples:
  # Set a deployment's nginx container image to 'nginx:1.9.1', and its busybox container image to 'busybox'.
  kubectl set image deployment/nginx busybox=busybox nginx=nginx:1.9.1

  # Update all deployments' and rc's nginx container's image to 'nginx:1.9.1'
  kubectl set image deployments,rc nginx=nginx:1.9.1 --all

  # Update image of all containers of daemonset abc to 'nginx:1.9.1'
  kubectl set image daemonset abc *=nginx:1.9.1

  # Print result (in yaml format) of updating nginx container image from local file, without hitting the server
  kubectl set image -f path/to/file.yaml nginx=nginx:1.9.1 --local -o yaml

您正在使用 Deployment object。 Deployments 使用他们的 spec.template 创建 Pods。

Pods可以有多个containers，每个都有一个名字。
此命令将向您显示部署中 Pods 的容器名称：

kubectl get --output=wide deploy/scrapper-config

下面是一个 Deployment 的示例，它使用两个容器创建 Pods："myapp" 和 "cool-sidecar"。（请参阅 CONTAINERS 列。）

kubectl get --output=wide deploy/myapp
NAME    READY   UP-TO-DATE   AVAILABLE   AGE   CONTAINERS           IMAGES        SELECTOR
myapp   1/1     1            0           10m   myapp,cool-sidecar   nginx,nginx   run=myapp

您可以在最后一个参数中使用该容器名称：

'my-container-name=gcr.io/abiding-robot-255320/scrappercontroller'

如果您的 Pods 每个容器只有一个容器，您也可以只使用通配符 (*):

'*=gcr.io/abiding-robot-255320/scrappercontroller'

希望对您有所帮助

Setting a container in Kubernetes with cloudbuild.yaml error: unable to find container named "XXX" error

Setting a container in Kubernetes with cloudbuild.yaml error: unable to find container named "XXX" error

google-cloud-platform

kubernetes

google-cloud-build