Jenkins从站无法与主站连接:错误的确认顺序 [英] Jenkins slave cannot connect with master: Incorrect acknowledgement sequence

问题描述

在将我们的Jenkins主服务器安装更新到最新的LTS版本2.46.3之后，它的一个从服务器(Windows 7机器，32位)无法与主服务器连接.

After update of our Jenkins master installation to its latest LTS version 2.46.3 one of its slaves (Windows 7 machine, 32-bit) cannot connect with the master.

我们得到的错误是:

java -jar slave.jar -jnlpUrl https://<jenkins-name>/computer/<node-name>/slave-agent.jnlp -secret <secret-value>
Jun 22, 2017 1:19:05 PM hudson.remoting.jnlp.Main createEngine
INFO: Setting up slave: node-name
Jun 22, 2017 1:19:05 PM hudson.remoting.jnlp.Main$CuiListener <init>
INFO: Jenkins agent is running in headless mode.
Jun 22, 2017 1:19:05 PM hudson.remoting.jnlp.Main$CuiListener status
INFO: Locating server among [https://<jenkins-name>/]
Jun 22, 2017 1:19:05 PM org.jenkinsci.remoting.engine.JnlpAgentEndpointResolver resolve
INFO: Remoting server accepts the following protocols: [JNLP3-connect, JNLP-connect, CLI2-connect, Ping, CLI-connect, JNLP4-connect, JNLP2-c
onnect]
Jun 22, 2017 1:19:05 PM hudson.remoting.jnlp.Main$CuiListener status
INFO: Agent discovery successful
  Agent address: <jenkins-name>
  Agent port:    <jenkins-port>
  Identity:      <id:en:ti:ty>
Jun 22, 2017 1:19:05 PM hudson.remoting.jnlp.Main$CuiListener status
INFO: Handshaking
Jun 22, 2017 1:19:05 PM hudson.remoting.jnlp.Main$CuiListener status
INFO: Connecting to <jenkins-name>:9150
Jun 22, 2017 1:19:05 PM hudson.remoting.jnlp.Main$CuiListener status
INFO: Trying protocol: JNLP4-connect
Jun 22, 2017 1:19:05 PM org.jenkinsci.remoting.protocol.impl.AckFilterLayer abort
WARNING: [JNLP4-connect connection to <our-proxy>/10.253.0.11:81] Incorrect acknowledgement sequence, expected 0x0003414333 got 0x4854545044
Jun 22, 2017 1:19:05 PM hudson.remoting.jnlp.Main$CuiListener status
INFO: Protocol JNLP4-connect encountered an unexpected exception
java.util.concurrent.ExecutionException: org.jenkinsci.remoting.protocol.impl.ConnectionRefusalException: Connection closed before acknowled
gement sent
        at org.jenkinsci.remoting.util.SettableFuture.get(SettableFuture.java:223)
        at hudson.remoting.Engine.innerRun(Engine.java:385)
        at hudson.remoting.Engine.run(Engine.java:287)
Caused by: org.jenkinsci.remoting.protocol.impl.ConnectionRefusalException: Connection closed before acknowledgement sent
        at org.jenkinsci.remoting.protocol.impl.AckFilterLayer.onRecvClosed(AckFilterLayer.java:280)
        at org.jenkinsci.remoting.protocol.FilterLayer.abort(FilterLayer.java:164)
        at org.jenkinsci.remoting.protocol.impl.AckFilterLayer.abort(AckFilterLayer.java:130)
        at org.jenkinsci.remoting.protocol.impl.AckFilterLayer.onRecv(AckFilterLayer.java:258)
        at org.jenkinsci.remoting.protocol.ProtocolStack$Ptr.onRecv(ProtocolStack.java:669)
        at org.jenkinsci.remoting.protocol.NetworkLayer.onRead(NetworkLayer.java:136)
        at org.jenkinsci.remoting.protocol.impl.BIONetworkLayer.access$2200(BIONetworkLayer.java:48)

我们花了很多时间来解决问题.不幸的是没有成功.

We spent a lot of time trying to fix the problem. Unfortunately without success.

您是否知道是什么原因导致了该问题以及如何解决该问题?

Do you have an idea what could have caused the problem and how can it be solved?

推荐答案

我们最近使用基于JNLP的基于AWS的Jenkins进行了远程集成测试，从而解决了这一问题.远程从服务器将回叫Jenkins主服务器，该主服务器因类似错误而失败.该问题最终是为Jenkins Master动态生成的HTTP类型的AWS ELB(因为Kubernetes ELB供应商目前不支持多协议ELB).我们必须手动将ELB的JNLP入口端口类型更改为TCP，而Web界面入口实例端口"是协议HTTP，而负载平衡器"是协议HTTPS.

We recently hit this issue with our AWS-based Jenkins using JNLP for remote integration testing. The remote slave would call back to the Jenkins master, which failed with a similar error. The issue ended up being a dynamically generated AWS ELB of type HTTP (because the Kubernetes ELB provisioner presently doesn't support multi-protocol ELBs) for the Jenkins Master. We had to manually change the JNLP ingress port type of the ELB to TCP, while the web interface ingress 'instance port' was protocol HTTP and 'load balancer' was protocol HTTPS.

这篇关于Jenkins从站无法与主站连接:错误的确认顺序的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！