云原生之旅 - 6）不能错过的一款 Kubernetes 应用编排管理神器 Kustomize( 二 ) _生活百科

deployment-patch.yaml

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---apiVersion: v1kind: Namespacemetadata: name: demonamespace.yaml
### 文章首发于博客园 https://www.cnblogs.com/wade-xu/p/16839829.html
最后我们看 dev/kustomization.yaml
apiVersion: kustomize.config.k8s.io/v1beta1kind: Kustomizationresources:- ../_commonnamespace: democommonLabels: app: demo-appreplicas:- count: 1 name: demo-appconfigMapGenerator:- files: - config.json name: demo-app-configpatches:- patch: |- - op: replace path: /metadata/name value: demo-app target: name: NAME_PLACEHOLDERpatchesStrategicMerge:- deployment-patch.yamlimages:- name: wadexu007/demo newTag: 1.0.0dev env 里面将replicas设置成1，用config.json 生成 configMap

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{ "SOME_CONFIG": "/demo/path"}config.json
deployment-patch.yaml 里面也将container resource request/limit 配置设置小一点，采用 patchesStrategicMerge 与 common 和 base里面的deployment资源合并。

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apiVersion: apps/v1kind: Deploymentmetadata: name: NAME_PLACEHOLDERspec: template: spec: containers: - name: app resources: limits: cpu: 1 memory: 1Gi requests: cpu: 200m memory: 256Mideployment-patch.yaml
另外还采用了 patch 的方式，改了每个资源的name --> demo-app
以及images 替换了原来的 image name and tag.
kustomize 命令如下
kustomize build demo-manifests/services/demo-app/dev > demo-app.yaml如果用 kubectl 命令的话，示例如下
kubectl kustomize services/demo-app/dev/ > demo-app.yaml最终结果

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apiVersion: v1kind: Namespacemetadata: labels: app: demo-app name: demo---apiVersion: v1kind: ServiceAccountmetadata: labels: app: demo-app managed-by: Kustomize name: demo-app namespace: demo---apiVersion: v1data: config.json: |- { "SOME_CONFIG": "/demo/path" }kind: ConfigMapmetadata: labels: app: demo-app name: demo-app-config-t7c64mbtt2 namespace: demo---apiVersion: v1kind: Servicemetadata: labels: app: demo-app managed-by: Kustomize name: demo-app namespace: demospec: ports: - port: 8080 protocol: TCP targetPort: http selector: app: demo-app managed-by: Kustomize type: ClusterIP---apiVersion: apps/v1kind: Deploymentmetadata: labels: app: demo-app managed-by: Kustomize name: demo-app namespace: demospec: replicas: 1 selector: matchLabels: app: demo-app managed-by: Kustomize template: metadata: labels: app: demo-app managed-by: Kustomize spec: containers: - image: wadexu007/demo:1.0.0 imagePullPolicy: IfNotPresent livenessProbe: failureThreshold: 5 httpGet: path: /pizzas port: 8080 initialDelaySeconds: 10 periodSeconds: 40 timeoutSeconds: 1 name: app ports: - containerPort: 8080 name: http readinessProbe: failureThreshold: 5 httpGet: path: /pizzas port: 8080 initialDelaySeconds: 10 periodSeconds: 20 timeoutSeconds: 1 resources: limits: cpu: 1 memory: 1Gi requests: cpu: 200m memory: 256Mi securityContext: allowPrivilegeEscalation: false volumeMounts: - mountPath: /app/conf/config.json name: config-volume subPath: config.json serviceAccountName: demo-app volumes: - configMap: name: demo-app-config-t7c64mbtt2 name: config-volume