Question

我是容器和kubernetes的新手。我想做的是创建一个可以访问本地目录的Pod。

我遵循了以下指示： configure persistent volume storage

创建了我的“ Persistent Volume”，“ Persistent Volume Claim”和我的pod。

问题是tomcat无法在共享目录上写

这是持久卷：

kind: PersistentVolume
apiVersion: v1
metadata:
  name: pv-webapp6
  labels:
    type: local
spec:
  storageClassName: manual
  capacity:
    storage: 3Gi
  accessModes:
    - ReadWriteOnce
  hostPath:
    path: "/opt/test_tomcat/app"

这是永久数量声明：

kind: PersistentVolumeClaim
apiVersion: v1
metadata:
  name: pvc-webapp6
spec:
  storageClassName: manual
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 1Gi

这是我要创建的tomcat Pod：

apiVersion: v1
kind: Pod
metadata:
  name: webapp6
spec:
  containers:
  - image: tomcat:8.0
    name: webapp6
    ports:
      - containerPort: 8080
        name: webapp6
    volumeMounts:
    - mountPath: /usr/local/tomcat/webapps
      name: test-volume
  volumes:
  - name: test-volume
    persistentVolumeClaim:
      claimName: pvc-webapp6

这有点明显，但这是豆荚上的错误。

[root @ testserver webapp6-test]＃kubectl exec -it webapp6-/ bin / bash
  root @ webapp6：/ usr / local / tomcat＃mkdir / usr / local / tomcat / webapps / sample
  mkdir：无法创建目录“ / usr / local / tomcat / webapps / sample”：权限被拒绝

Answer 1

问题出在您的PVC yaml文件中，您没有指定org.neo4j.driver.v1.exceptions.ServiceUnavailableException: Connection to the database terminated. This can happen due to network instabilities, or due to restarts of the database at org.neo4j.driver.internal.util.ErrorUtil.newConnectionTerminatedError(ErrorUtil.java:45) ~[neo4j-java-driver-1.6.3.jar:1.6.3-b33d284ef6f350edbfe9e8f4539cdcdb0200bd0b] at org.neo4j.driver.internal.util.ErrorUtil.newConnectionTerminatedError(ErrorUtil.java:38) ~[neo4j-java-driver-1.6.3.jar:1.6.3-b33d284ef6f350edbfe9e8f4539cdcdb0200bd0b] at org.neo4j.driver.internal.async.inbound.ChannelErrorHandler.channelInactive(ChannelErrorHandler.java:76) ~[neo4j-java-driver-1.6.3.jar:1.6.3-b33d284ef6f350edbfe9e8f4539cdcdb0200bd0b] at org.neo4j.driver.internal.shaded.io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:245) ~[neo4j-java-driver-1.6.3.jar:1.6.3-b33d284ef6f350edbfe9e8f4539cdcdb0200bd0b] at org.neo4j.driver.internal.shaded.io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:231) ~[neo4j-java-driver-1.6.3.jar:1.6.3-b33d284ef6f350edbfe9e8f4539cdcdb0200bd0b] at org.neo4j.driver.internal.shaded.io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:224) ~[neo4j-java-driver-1.6.3.jar:1.6.3-b33d284ef6f350edbfe9e8f4539cdcdb0200bd0b] at org.neo4j.driver.internal.shaded.io.netty.channel.ChannelInboundHandlerAdapter.channelInactive(ChannelInboundHandlerAdapter.java:75) ~[neo4j-java-driver-1.6.3.jar:1.6.3-b33d284ef6f350edbfe9e8f4539cdcdb0200bd0b] at org.neo4j.driver.internal.shaded.io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:245) ~[neo4j-java-driver-1.6.3.jar:1.6.3-b33d284ef6f350edbfe9e8f4539cdcdb0200bd0b] at org.neo4j.driver.internal.shaded.io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:231) ~[neo4j-java-driver-1.6.3.jar:1.6.3-b33d284ef6f350edbfe9e8f4539cdcdb0200bd0b] at org.neo4j.driver.internal.shaded.io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:224) ~[neo4j-java-driver-1.6.3.jar:1.6.3-b33d284ef6f350edbfe9e8f4539cdcdb0200bd0b] at org.neo4j.driver.internal.shaded.io.netty.handler.codec.ByteToMessageDecoder.channelInputClosed(ByteToMessageDecoder.java:377) ~[neo4j-java-driver-1.6.3.jar:1.6.3-b33d284ef6f350edbfe9e8f4539cdcdb0200bd0b] at org.neo4j.driver.internal.shaded.io.netty.handler.codec.ByteToMessageDecoder.channelInactive(ByteToMessageDecoder.java:342) ~[neo4j-java-driver-1.6.3.jar:1.6.3-b33d284ef6f350edbfe9e8f4539cdcdb0200bd0b] at org.neo4j.driver.internal.shaded.io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:245) ~[neo4j-java-driver-1.6.3.jar:1.6.3-b33d284ef6f350edbfe9e8f4539cdcdb0200bd0b] at org.neo4j.driver.internal.shaded.io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:231) ~[neo4j-java-driver-1.6.3.jar:1.6.3-b33d284ef6f350edbfe9e8f4539cdcdb0200bd0b] at org.neo4j.driver.internal.shaded.io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:224) ~[neo4j-java-driver-1.6.3.jar:1.6.3-b33d284ef6f350edbfe9e8f4539cdcdb0200bd0b] at org.neo4j.driver.internal.shaded.io.netty.handler.codec.ByteToMessageDecoder.channelInputClosed(ByteToMessageDecoder.java:377) ~[neo4j-java-driver-1.6.3.jar:1.6.3-b33d284ef6f350edbfe9e8f4539cdcdb0200bd0b] at org.neo4j.driver.internal.shaded.io.netty.handler.codec.ByteToMessageDecoder.channelInactive(ByteToMessageDecoder.java:342) ~[neo4j-java-driver-1.6.3.jar:1.6.3-b33d284ef6f350edbfe9e8f4539cdcdb0200bd0b] at org.neo4j.driver.internal.shaded.io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:245) ~[neo4j-java-driver-1.6.3.jar:1.6.3-b33d284ef6f350edbfe9e8f4539cdcdb0200bd0b] at org.neo4j.driver.internal.shaded.io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:231) ~[neo4j-java-driver-1.6.3.jar:1.6.3-b33d284ef6f350edbfe9e8f4539cdcdb0200bd0b] at org.neo4j.driver.internal.shaded.io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:224) ~[neo4j-java-driver-1.6.3.jar:1.6.3-b33d284ef6f350edbfe9e8f4539cdcdb0200bd0b] at org.neo4j.driver.internal.shaded.io.netty.handler.codec.ByteToMessageDecoder.channelInputClosed(ByteToMessageDecoder.java:377) ~[neo4j-java-driver-1.6.3.jar:1.6.3-b33d284ef6f350edbfe9e8f4539cdcdb0200bd0b] at org.neo4j.driver.internal.shaded.io.netty.handler.codec.ByteToMessageDecoder.channelInactive(ByteToMessageDecoder.java:342) ~[neo4j-java-driver-1.6.3.jar:1.6.3-b33d284ef6f350edbfe9e8f4539cdcdb0200bd0b] at org.neo4j.driver.internal.shaded.io.netty.handler.ssl.SslHandler.channelInactive(SslHandler.java:1010) ~[neo4j-java-driver-1.6.3.jar:1.6.3-b33d284ef6f350edbfe9e8f4539cdcdb0200bd0b] at org.neo4j.driver.internal.shaded.io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:245) ~[neo4j-java-driver-1.6.3.jar:1.6.3-b33d284ef6f350edbfe9e8f4539cdcdb0200bd0b] at org.neo4j.driver.internal.shaded.io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:231) ~[neo4j-java-driver-1.6.3.jar:1.6.3-b33d284ef6f350edbfe9e8f4539cdcdb0200bd0b] at org.neo4j.driver.internal.shaded.io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:224) ~[neo4j-java-driver-1.6.3.jar:1.6.3-b33d284ef6f350edbfe9e8f4539cdcdb0200bd0b] at org.neo4j.driver.internal.shaded.io.netty.channel.DefaultChannelPipeline$HeadContext.channelInactive(DefaultChannelPipeline.java:1409) ~[neo4j-java-driver-1.6.3.jar:1.6.3-b33d284ef6f350edbfe9e8f4539cdcdb0200bd0b] at org.neo4j.driver.internal.shaded.io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:245) ~[neo4j-java-driver-1.6.3.jar:1.6.3-b33d284ef6f350edbfe9e8f4539cdcdb0200bd0b] at org.neo4j.driver.internal.shaded.io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:231) ~[neo4j-java-driver-1.6.3.jar:1.6.3-b33d284ef6f350edbfe9e8f4539cdcdb0200bd0b] at org.neo4j.driver.internal.shaded.io.netty.channel.DefaultChannelPipeline.fireChannelInactive(DefaultChannelPipeline.java:927) ~[neo4j-java-driver-1.6.3.jar:1.6.3-b33d284ef6f350edbfe9e8f4539cdcdb0200bd0b] at org.neo4j.driver.internal.shaded.io.netty.channel.AbstractChannel$AbstractUnsafe$8.run(AbstractChannel.java:822) ~[neo4j-java-driver-1.6.3.jar:1.6.3-b33d284ef6f350edbfe9e8f4539cdcdb0200bd0b] at org.neo4j.driver.internal.shaded.io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:163) ~[neo4j-java-driver-1.6.3.jar:1.6.3-b33d284ef6f350edbfe9e8f4539cdcdb0200bd0b] at org.neo4j.driver.internal.shaded.io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:404) ~[neo4j-java-driver-1.6.3.jar:1.6.3-b33d284ef6f350edbfe9e8f4539cdcdb0200bd0b] at org.neo4j.driver.internal.shaded.io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:463) ~[neo4j-java-driver-1.6.3.jar:1.6.3-b33d284ef6f350edbfe9e8f4539cdcdb0200bd0b] at org.neo4j.driver.internal.shaded.io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:886) ~[neo4j-java-driver-1.6.3.jar:1.6.3-b33d284ef6f350edbfe9e8f4539cdcdb0200bd0b] at org.neo4j.driver.internal.shaded.io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) ~[neo4j-java-driver-1.6.3.jar:1.6.3-b33d284ef6f350edbfe9e8f4539cdcdb0200bd0b] at java.lang.Thread.run(Thread.java:844) [?:?]。因此，PV和PVC无法相互绑定。请用以下文件替换PVC yaml文件：

storageClassName

现在一切正常。希望这会有所帮助。

我很快就用您的Yaml部署了pod，最后一切正常：

kind: PersistentVolumeClaim
apiVersion: v1
metadata:
   name: pvc-webapp6
spec:
   storageClassName: manual
   accessModes:
      - ReadWriteOnce
   resources:
      requests:
         storage: 3Gi

现在，当我查看主机时，可以看到新创建的[root@Master admin]# kubectl exec -it webapp6 bash root@webapp6:/usr/local/tomcat# mkdir /usr/local/tomcat/webapps/sample root@webapp6:/usr/local/tomcat# touch /usr/local/tomcat/webapps/sample/a root@webapp6:/usr/local/tomcat# ls /usr/local/tomcat/webapps/sample/ a文件

因此，至少yaml文件可以正常工作。

Pod不在本地路径上书写

1 个答案: