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75 lines
1.6 KiB
Markdown
75 lines
1.6 KiB
Markdown
# 示例: 改变镜像名称和标签
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首先构建一个工作空间：
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<!-- @makeWorkplace @testAgainstLatestRelease -->
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```bash
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DEMO_HOME=$(mktemp -d)
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```
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创建包含pod资源的 `kustomization`
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<!-- @testAgainstLatestRelease to @test -->
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```bash
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cat <<EOF >$DEMO_HOME/kustomization.yaml
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resources:
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- pod.yaml
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EOF
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```
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创建 pod 资源pod.yaml
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<!-- @createDeployment @test -->
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```bash
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cat <<EOF >$DEMO_HOME/pod.yaml
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apiVersion: v1
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kind: Pod
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metadata:
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name: myapp-pod
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labels:
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app: myapp
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spec:
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containers:
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- name: myapp-container
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image: busybox:1.29.0
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command: ['sh', '-c', 'echo The app is running! && sleep 3600']
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initContainers:
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- name: init-mydb
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image: busybox:1.29.0
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command: ['sh', '-c', 'until nslookup mydb; do echo waiting for mydb; sleep 2; done;']
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EOF
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```
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`myapp-pod` 包含一个init容器和一个普通容器，两者都使用 `busybox：1.29.0` 镜像。
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在 `kustomization.yaml` 中添加 `images` 字段来更改镜像 `busybox` 和标签 `1.29.0` 。
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- 通过 `kustomize` 添加 `images`：
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<!-- @addImages @test -->
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```bash
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cd $DEMO_HOME
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kustomize edit set image busybox=alpine:3.6
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```
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- 将`images`字段将被添加到`kustomization.yaml`：
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> ```yaml
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> images:
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> - name: busybox
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> newName: alpine
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> newTag: 3.6
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> ```
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构建 `kustomization`
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<!-- @kustomizeBuild @testAgainstLatestRelease -->
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```bash
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kustomize build $DEMO_HOME
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```
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确认`busybox`镜像和标签是否被替换为`alpine：3.6`：
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<!-- @confirmImages @testAgainstLatestRelease -->
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```
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test 2 = \
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$(kustomize build $DEMO_HOME | grep alpine:3.6 | wc -l); \
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echo $?
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```
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