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Bug
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Resolution: Fixed
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Minor
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None
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AWS. Docker master. Docker agent.
$ docker run --network="dockerjenkinssuite_default" csanchez/jenkins-swarm-slave -username admin -password admin -executors 1 -master http://172.18.0.2:8080 Running java -jar /usr/share/jenkins/swarm-client-3.4.jar -fsroot /home/jenkins-slave -username admin -password admin -executors 1 -master http://172.18.0.2:8080 May 10, 2017 8:23:43 PM hudson.plugins.swarm.Client main INFO: Client.main invoked with: [-fsroot /home/jenkins-slave -username admin -password admin -executors 1 -master http://172.18.0.2:8080] May 10, 2017 8:23:46 PM hudson.plugins.swarm.Client run INFO: Discovering Jenkins master Exception in thread "main" java.lang.NullPointerException at hudson.plugins.swarm.SwarmClient.createHttpClient(SwarmClient.java:333) at hudson.plugins.swarm.SwarmClient.discoverFromMasterUrl(SwarmClient.java:213) at hudson.plugins.swarm.Client.run(Client.java:114) at hudson.plugins.swarm.Client.main(Client.java:87)
Which happens across the board. The username and password are correct and work:
$ docker run -it --network="dockerjenkinssuite_default" --rm nicolaka/netshoot / # curl http://admin:admin@172.18.0.2:8080/api/xml <hudson _class='hudson.model.Hudson'><assignedLabel></assignedLabel><mode>NORMAL</mode><nodeDescription>the master Jenkins node</nodeDescription><nodeName></nodeName><numExecutors>2</numExecutors><job _class='org.jenkinsci.plugins.workflow.job.WorkflowJob'><name>Monthly Statistics Ingest</name><url>http://10.30.0.152/job/Monthly%20Statistics%20Ingest/</url><color>notbuilt</color></job><overallLoad></overallLoad><primaryView _class='hudson.model.AllView'><name>all</name><url>http://10.30.0.152/</url></primaryView><quietingDown>false</quietingDown><slaveAgentPort>50000</slaveAgentPort><unlabeledLoad _class='jenkins.model.UnlabeledLoadStatistics'></unlabeledLoad><useCrumbs>true</useCrumbs><useSecurity>true</useSecurity><view _class='hudson.model.AllView'><name>all</name><url>http://10.30.0.152/</url></view></hudson>
I don't think I should get a null pointer even if my connection is incorrect.
I would like to be able to connect the swarm agent via the docker internal network while the jenkins master still serves via the non-docker IP address. (being proxied by traefik.)
Is there any way I can further debug this? The docs don't mention any debug logging or anything.
Using
- is duplicated by
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JENKINS-43674 NullPointerException for HTTPS swarm client connection
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- Resolved
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add empty option -sslFingerprints " " to fix issue