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Change By:
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John Cook
(28/Jan/13 7:17 PM)
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Description:
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Once I upgraded to Jenkins 1.5, my slave agent ("mac-mini") could no longer connect. Here's an example session (I changed the hostname and credentials to protect the guilty):
{code}
$ java -jar ./slave.jar -jnlpCredentials myuser:mypassword -jnlpUrl https://ci.mydomain.com/jenkins/computer/mac-mini/slave-agent.jnlp -noCertificateCheck
Skipping HTTPS certificate checks altoghether. Note that this is not secure at all.
Jan 28, 2013 1:45:43 PM hudson.remoting.jnlp.Main$CuiListener <init>
INFO: Hudson agent is running in headless mode.
Jan 28, 2013 1:45:43 PM hudson.remoting.jnlp.Main$CuiListener status
INFO: Locating server among [http://ci.mydomain.com/jenkins/, http://127.0.0.1:8080/jenkins/]
Jan 28, 2013 1:45:43 PM hudson.remoting.jnlp.Main$CuiListener error
SEVERE: http://ci.mydomain.com/jenkins/tcpSlaveAgentListener/ is invalid: 301 Moved Permanently
java.lang.Exception: http://ci.mydomain.com/jenkins/tcpSlaveAgentListener/ is invalid: 301 Moved Permanently
at hudson.remoting.Engine.run(Engine.java:168)
{code}
I then used Charles Proxy to capture the HTTP traffic to see what was going on. I've attached a file of that capture, but the relevant problem is here:
{code}
<argument>-url</argument><argument>http://ci.mydomain.com/jenkins/</argument>
{code}
The problem is that the slave is being told to connect via HTTP, but (thanks to our proxy) it is only available via HTTPS. I checked my configuration and it is correct. I believe the issue is caused by
[
this change on January 15th
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https://github.com/jenkinsci/jenkins/commit/460e508155187918e8c0f4fd0bb66a99cfe78527#L0R1877
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. The protocol of the request as far as Jenkins knows is HTTP. However the client needs to use the HTTPS protocol I configured for our root URL.
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