Jenkins JNLP 从机与 ELB

Question

有没有办法将 JNLP 从端点与 ELB 集成？

每当我将 ELB 端点与侦听器端口 50000 连接到 EC2 实例 50000 时，我都会得到：

INFO: Connecting to app.ap-southeast-2.elb.amazonaws.com:50000
Aug 11, 2017 9:05:54 AM hudson.remoting.jnlp.Main$CuiListener status
INFO: Trying protocol: JNLP-connect
Aug 11, 2017 9:05:54 AM hudson.remoting.jnlp.Main$CuiListener status
INFO: Protocol JNLP-connect encountered an unexpected exception
java.util.concurrent.ExecutionException: org.jenkinsci.remoting.protocol.impl.ConnectionRefusalException: Server didn't accept the handshake: HTTP/1.1 400 BAD_REQUEST
    at java.util.concurrent.FutureTask.report(FutureTask.java:122)
    at java.util.concurrent.FutureTask.get(FutureTask.java:192)
    at hudson.remoting.Engine.innerRun(Engine.java:385)
    at hudson.remoting.Engine.run(Engine.java:287)
Caused by: org.jenkinsci.remoting.protocol.impl.ConnectionRefusalException: Server didn't accept the handshake: HTTP/1.1 400 BAD_REQUEST
    at org.jenkinsci.remoting.engine.JnlpProtocol1Handler.sendHandshake(JnlpProtocol1Handler.java:121)
    at org.jenkinsci.remoting.engine.LegacyJnlpProtocolHandler$2.call(LegacyJnlpProtocolHandler.java:162)
    at org.jenkinsci.remoting.engine.LegacyJnlpProtocolHandler$2.call(LegacyJnlpProtocolHandler.java:158)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at hudson.remoting.Engine$1$1.run(Engine.java:94)
    at java.lang.Thread.run(Thread.java:748)

Aug 11, 2017 9:05:54 AM hudson.remoting.jnlp.Main$CuiListener error
SEVERE: The server rejected the connection: None of the protocols were accepted
java.lang.Exception: The server rejected the connection: None of the protocols were accepted
    at hudson.remoting.Engine.onConnectionRejected(Engine.java:484)
    at hudson.remoting.Engine.innerRun(Engine.java:448)
    at hudson.remoting.Engine.run(Engine.java:287)

但是，当我将 JNLP 端点 URL 直接更改为 EC2 实例时，它可以正常工作，没有任何错误。

似乎 ELB 正在做一些 Jenkins 大师不接受的翻译。

有没有人通过 ELB 让 JNLP 连接从 Jenkins 从站工作到主站？

谢谢，

Answer 1

如果您想通过同一个负载均衡器发布所有服务（因此您可以只使用 1 个域名），您可以使用 Classic Load Balancer。有了它，您可以创建 2 个侦听器 --> 示例 1 https（使用 ACM ssl 证书）将流量代理/卸载到 Jenkins 端口 HTTP:8080 和其他 tcp:50000 将流量转发/桥接到后端服务器端口 50000。