kubernetes上的Jenkins奴隶吊舱随机失效

我已经设置了一个Jenkins主机(在VM上),这就是配置 jnlp 奴隶 kubernetes

在极少数情况下,管道发生故障,并显示以下消息:

java.io.IOException: Pipe closed
    at java.io.PipedInputStream.checkStateForReceive(PipedInputStream.java:260)
    at java.io.PipedInputStream.receive(PipedInputStream.java:226)
    at java.io.PipedOutputStream.write(PipedOutputStream.java:149)
    at java.io.OutputStream.write(OutputStream.java:75)
    at org.csanchez.jenkins.plugins.kubernetes.pipeline.ContainerExecDecorator$1.setupEnvironmentVariable(ContainerExecDecorator.java:510)
    at org.csanchez.jenkins.plugins.kubernetes.pipeline.ContainerExecDecorator$1.doLaunch(ContainerExecDecorator.java:474)
    at org.csanchez.jenkins.plugins.kubernetes.pipeline.ContainerExecDecorator$1.launch(ContainerExecDecorator.java:333)
    at hudson.Launcher$ProcStarter.start(Launcher.java:455)

库伯内特斯 Stackdriver 在Stackdriver中,可以看到pod 做 设法连接到主机,例如。

Handshaking
Agent discovery successful
Trying protocol: JNLP4-Connect
Remote Identity confirmed: <some_hash_here>
Connecting to <jenkins-master-url>:49187
started container
loading plugin ...

但是过了一段时间它失败了,下面是相关的日志:

org.csanchez.jenkins.plugins.kubernetes.KubernetesSlave$SlaveDisconnector call
INFO: Disabled slave engine reconnects.
hudson.remoting.jnlp.Main$CuiListener status
Terminated
hudson.remoting.Request$2 run
 Failed to send back a reply to the request hudson.remoting.Request$2@336ec321: hudson.remoting.ChannelClosedException: Channel "hudson.remoting.Channel@29d0e8b2:JNLP4-connect connection to <jenkins-master-url>/<public-ip-of-jenkins-master>:49187": channel is already closed
"Processing signal 'terminated'"
.
.
.

如何进一步排除此随机错误?