Question

我的项目中有一个文件夹，其中包含1个属性文件和1个jar文件（db-driver）文件。

我需要将这两个文件都复制到pod上的/ usr / local / tomcat / lib目录中。我不确定如何在kubernetes yaml文件中实现此目标。以下是我的yaml文件，我正在其中尝试使用configMap来实现此目的，但是pod创建失败，并显示错误“ configmap引用了不存在的配置密钥：app.properties”

目标/usr/local/tomcat/lib已经具有其他jar文件，因此我试图使用configMap而不覆盖整个目录，而仅添加2个特定于我的应用程序的文件。

apiVersion: apps/v1
kind: Deployment
metadata:
  name: tomcatdeployment
  labels:
    app:  tomcat
spec:
  replicas: 1
  selector:
    matchLabels:
      app:  tomcat
  template:
    metadata:
      labels:
        app:  tomcat
    spec:
      containers:
        - name: tomcat
          image: tomcat:latest
          imagePullPolicy: IfNotPresent
          volumeMounts:
          - name: appvolume
            mountPath: /usr/local/data
          - name: config
            mountPath: /usr/local/tomcat/lib
            subPath: ./configuration
          ports:
            - name: http
              containerPort: 8080
              protocol: TCP
      volumes:
        - name: appvolume
        - name: config
          configMap:
            name: config-map
            items:
              - key: app.properties
                path: app.properties
---
apiVersion: v1
kind: ConfigMap
metadata:
  name: config-map
data:
  key:  app.properties

当前目录结构...

.
├── configuration
│   ├── app.properties
│   └── mysql-connector-java-5.1.21.jar
├── deployment.yaml
└── service.yaml

请分享您有关如何实现此目标的宝贵反馈意见。

致谢。

Answer 1

出现此错误是正常的，因为在此卷声明中您提到了键：app.properties，否则在configmap键中提到了：app.properties，所以这里的键是key，值是app.properties，因此您必须在卷中声明更改：

volumes:
        - name: appvolume
        - name: config
          configMap:
            name: config-map
            items:
              - key: app.properties
                path: app.properties

至：

   volumes:
            - name: appvolume
            - name: config
              configMap:
                name: config-map
                items:
                  - key: key
                    path: app.properties

有关更多信息，请参见：add-configmap-data-to-a-volume

Answer 2

请尝试以下操作：

kubectl create configmap config-map --from-file = app.properties --from-file = mysql-connector-java-5.1.21.jar

    apiVersion: apps/v1
    kind: Deployment
    metadata:
      name: tomcatdeployment
      labels:
        app:  tomcat
    spec:
      replicas: 1
      selector:
        matchLabels:
          app:  tomcat
      template:
        metadata:
          labels:
            app:  tomcat
        spec:
          containers:
            - name: tomcat
              image: tomcat:latest
              imagePullPolicy: IfNotPresent
              volumeMounts:
              - name: config
                mountPath: /usr/local/tomcat/lib/conf
              ports:
                - name: http
                  containerPort: 8080
                  protocol: TCP
          volumes:
            - name: config
              configMap:
                name: config-map

或

apiVersion: apps/v1
kind: Deployment
metadata:
  name: tomcatdeployment
  labels:
    app:  tomcat
spec:
  replicas: 1
  selector:
    matchLabels:
      app:  tomcat
  template:
    metadata:
      labels:
        app:  tomcat
    spec:
      containers:
        - name: tomcat3
          image: tomcat:latest
          imagePullPolicy: IfNotPresent
          volumeMounts:
          - name: config
            mountPath: /usr/local/tomcat/lib/app.properties
            subPath: app.properties
          - name: config
            mountPath: /usr/local/tomcat/lib/mysql-connector-java-5.1.21.jar
            subPath: mysql-connector-java-5.1.21.jar
          ports:
            - name: http
              containerPort: 8080
              protocol: TCP
      volumes:
        - name: config
          configMap:
            name: config-map
            items:
            - key: app.properties
              path: app.properties 
            - key: mysql-connector-java-5.1.21.jar
              path: mysql-connector-java-5.1.21.jar

如何将jar文件安装到tomcat容器

2 个答案: