Kubernetes插件容器无法连接回Jenkins [英] Kubernetes plugin containers can't connect back to Jenkins

问题描述

我有一个Jenkins和Kubernetes集群在AWS的同一个网络中运行。 Jenkins有自己的实例。

我已经配置了Kubernetes插件，如下所示：

使用推荐的JNLP泊坞窗图像。 Jenkins JNLP端口配置为静态 5000 。

现在，当我开始工作时，它显示了节点离线。当我点击离线节点时，我得到：

这使我进入k8群集。运行 docker ps 不显示运行的容器。但是：

从那里我去找什么码头容器运行，之后留下什么记录：

我使用：

解决方案

目录不可写邮件在容器日志？

  [...] 
线程mainjava中的异常。 lang.RuntimeException：根目录不可写
在hudson.remoting.FileSystemJarCache。< init>（FileSystemJarCache.java:44）
在hudson.remoting.Engine。< init>（Engine.java： 139）
 at hudson.remoting.jnlp.Main.createEngine（Main.java:164）
 at hudson.remoting.jnlp.Main.main（Main.java:148）
 at hudson .remoting.jnlp.Main._main（Main.java:144）
 at hudson.remoting.jnlp.Main.main（Main.java:110）
  

在这种情况下，您可能会遇到类似于这个。

PS：如果看不到日志，请尝试删除分配伪造选项

I have a Jenkins and Kubernetes cluster running within the same network in AWS. Jenkins has it's own instance.

I have configured the Kubernetes plugin as follows:

The recommended JNLP docker image is used. Jenkins JNLP port is configured to be static 5000.

Now when I kick off the job, it shows me that the node is offline. When I click on the offline node I get this:

This makes me go to the k8 cluster. Running docker ps shows no containers running. However:

From there I go to find what docker container gets run and what logs it leaves after that:

I use: https://github.com/jenkinsci/docker-jnlp-slave as image

https://github.com/jenkinsci/kubernetes-plugin

Jenkins version: 2.27

k8: hyperkube:v1.4.3_coreos.0

Jenkins does spin up the container, I guess it runs and errors out because no valid arguments are provided during the container run? I need it to be a hands off process where I don't have to log in to my containers (Java clients). How do I achieve this?

UPDATE

Based on this answer: kubernetes slaves cannot register to jenkins master

If I log into the container and run the command that Jenkins displays under the host that cannot connect:

java -jar /usr/share/jenkins/slave.jar -jnlpUrl https://test.myhost.com/computer/jenkinsminions-10f0b7d49054ac/slave-agent.jnlp -secret 62637e83008f50eb94483ad609e9a2719d313fa56e640e4beca9eebeaf0b1af2

The container connects via JNLP2 and the job runs.

I tried to add the arguments as suggested, but no luck. Containers still won't connect automatically:

解决方案

Do you have a Root directory not writable message in the container log?

[...]
Exception in thread "main" java.lang.RuntimeException: Root directory not writable
    at hudson.remoting.FileSystemJarCache.<init>(FileSystemJarCache.java:44)
    at hudson.remoting.Engine.<init>(Engine.java:139)
    at hudson.remoting.jnlp.Main.createEngine(Main.java:164)
    at hudson.remoting.jnlp.Main.main(Main.java:148)
    at hudson.remoting.jnlp.Main._main(Main.java:144)
    at hudson.remoting.jnlp.Main.main(Main.java:110)

In this case, you might have a problem similar to this.

PS: If you cannot see the logs, try removing the "Allocate pseudotty" option

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