Jenkins Window slave connectivty issue

0 votes

When we are trying establish window rdp connectivity

Feb 18, 2020 12:12:06 PM org.jenkinsci.remoting.engine.JnlpAgentEndpointResolver resolve

INFO: Remoting server accepts the following protocols: [JNLP4-connect, JNLP-connect, Ping, JNLP2-connect]

Feb 18, 2020 12:12:17 PM hudson.remoting.jnlp.GuiListener$1 run

INFO: Connecting to devops:50000 (retrying:2)

java.io.IOException: Failed to connect to devops:50000

                at org.jenkinsci.remoting.engine.JnlpAgentEndpoint.open(JnlpAgentEndpoint.java:242)

                at hudson.remoting.Engine.connect(Engine.java:686)

                at hudson.remoting.Engine.innerRun(Engine.java:547)

                at hudson.remoting.Engine.run(Engine.java:469)

Caused by: java.net.ConnectException: Connection refused: connect

                at sun.nio.ch.Net.connect0(Native Method)

                at sun.nio.ch.Net.connect(Unknown Source)

                at sun.nio.ch.Net.connect(Unknown Source)

                at sun.nio.ch.SocketChannelImpl.connect(Unknown Source)

                at java.nio.channels.SocketChannel.open(Unknown Source)

                at org.jenkinsci.remoting.engine.JnlpAgentEndpoint.open(JnlpAgentEndpoint.java:203)

                ... 3 more
Feb 26 in Jenkins by Vinay
• 120 points

edited Feb 27 by MD 188 views

1 answer to this question.

0 votes

Hi@vinay,

Caused by: java.net.ConnectException: Connection refused: connect

To avoid this error you may try the below steps.

  • Please check the firewall connection and try to ping each other.
  • check the remote root directory. It should contain agent.jar file. This agent.jar file will appear at the time of launching.

  • check jenkins Web UI is accessible or not from windows.

Hope these steps will solve your error.

Thank You

answered Feb 27 by MD
• 24,500 points
Firewall connectivity is good

even agent.jar file is present in remote root directory

able to browse jenkins web UI

We suspect port is not exposed in compose file. Now we need to fix this issue without making jenkins down

Are you able to browse jenkins Web UI from remote browser? 

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