I've got Jenkins running on an instance on Google Compute Engine. I've got
a Kubernetes cluster set up on GKE to run agents on. I followed the steps
here:
https://cloud.google.com/solutions/configuring-jenkins-kubernetes-engin
<https://cloud.google.com/solutions/configuring-jenkins-kubernetes-engine> The
master successfully creates pods, but the SSL handshake always fails with
this error:
Error in provisioning; agent=KubernetesSlave name: jenkins-t4lpw,
template=PodTemplate{inheritFrom='', name='jenkins', namespace='',
instanceCap=5, label='debian-8', nodeSelector='', nodeUsageMode=NORMAL,
workspaceVolume=org.csanchez.jenkins.plugins.kubernetes.volumes.workspace.EmptyDirWorkspaceVolume@22c413cb,
containers=[ContainerTemplate{name='build-agent', image='jenkins/jnlp-slave',
workingDir='/home/jenkins', command='/bin/sh -c', args='cat', ttyEnabled=true,
resourceRequestCpu='', resourceRequestMemory='', resourceLimitCpu='',
resourceLimitMemory='',
livenessProbe=org.csanchez.jenkins.plugins.kubernetes.ContainerLivenessProbe@76480942}]}.
Container jnlp exited with error 255. Logs: at
sun.security.ssl.Handshaker.fatalSE(Handshaker.java:296)
at
sun.security.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:1514)
at
sun.security.ssl.ClientHandshaker.processMessage(ClientHandshaker.java:216)
at sun.security.ssl.Handshaker.processLoop(Handshaker.java:1026)
at sun.security.ssl.Handshaker.process_record(Handshaker.java:961)
at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:1072)
at
sun.security.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1385)
at
sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1413)
at
sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1397)
at
sun.net.www.protocol.https.HttpsClient.afterConnect(HttpsClient.java:559)
at
sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:185)
at
sun.net.www.protocol.https.HttpsURLConnectionImpl.connect(HttpsURLConnectionImpl.java:162)
at
org.jenkinsci.remoting.engine.JnlpAgentEndpointResolver.resolve(JnlpAgentEndpointResolver.java:189)
... 2 more
Caused by: sun.security.validator.ValidatorException: PKIX path building
failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to
find valid certification path to requested target
at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:397)
at
sun.security.validator.PKIXValidator.engineValidate(PKIXValidator.java:302)
at sun.security.validator.Validator.validate(Validator.java:260)
at
sun.security.ssl.X509TrustManagerImpl.validate(X509TrustManagerImpl.java:324)
at
sun.security.ssl.X509TrustManagerImpl.checkTrusted(X509TrustManagerImpl.java:229)
at
sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(X509TrustManagerImpl.java:124)
at
sun.security.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:1496)
... 13 more
Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable
to find valid certification path to requested target
at
sun.security.provider.certpath.SunCertPathBuilder.build(SunCertPathBuilder.java:141)
at
sun.security.provider.certpath.SunCertPathBuilder.engineBuild(SunCertPathBuilder.java:126)
at java.security.cert.CertPathBuilder.build(CertPathBuilder.java:280)
at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:392)
... 19 more
I know the SSL cert used by my master is valid, so I don't know what the
issue is. I've tried using a local IP and providing a cert signed by my own
CA, then making a new image off of
gcr.io/cloud-solutions-images/jenkins-k8s-slave:v4 that imports the CA into
the jave keystore, but I still get the same error.
Is there any way to pass the --httpsKeyStore argument to Jenkins agents
that are run on GKE? If that isn't the problem, where should I look in my
config?
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