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Bug
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Resolution: Unresolved
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Critical
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Jenkins 2.303.3
Kubernetes plugin 1.30.6
Durable Task Plugin: 1.39
jnlp via jenkins/inbound-agent:4.11-1-alpine-jdk8
Issue is reproducible using the attached pipeline: jnlpcontainer_tests.groovy
Description of the test:
- running inside a k8s pod, with multiple containers
- a jnlp container
- a build container
- the pipeline starts 3 parallel branches
- jnlp branch - runs sh inside container('jnlp'){}
- build branch - runs sh inside container('build'){} // this is how the second container in the pod is called
- noContainer() branch – runs sh outside any container(){} closure
- in each of the parallel branches a simple sh call is executed
- in the jnlp and build branches sh is called inside a container() closure
- in these 2 branches sh is failing sporadically
- in the noContainer branch sh is called not inside a container() closure
- not a single failure was noticed in this branch in all the tries I started
mainly 2 Exceptions were thrown
[2021-11-18T10:49:57.920Z] java.io.EOFException [2021-11-18T10:49:57.921Z] at okio.RealBufferedSource.require(RealBufferedSource.java:61) [2021-11-18T10:49:57.921Z] at okio.RealBufferedSource.readByte(RealBufferedSource.java:74) [2021-11-18T10:49:57.921Z] at okhttp3.internal.ws.WebSocketReader.readHeader(WebSocketReader.java:117) [2021-11-18T10:49:57.921Z] at okhttp3.internal.ws.WebSocketReader.processNextFrame(WebSocketReader.java:101) [2021-11-18T10:49:57.921Z] at okhttp3.internal.ws.RealWebSocket.loopReader(RealWebSocket.java:274) [2021-11-18T10:49:57.921Z] at okhttp3.internal.ws.RealWebSocket$2.onResponse(RealWebSocket.java:214) [2021-11-18T10:49:57.921Z] at okhttp3.RealCall$AsyncCall.execute(RealCall.java:203) [2021-11-18T10:49:57.921Z] at okhttp3.internal.NamedRunnable.run(NamedRunnable.java:32) [2021-11-18T10:49:57.921Z] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [2021-11-18T10:49:57.921Z] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [2021-11-18T10:49:57.921Z] at java.lang.Thread.run(Thread.java:748) [2021-11-18T10:49:57.921Z] ERROR: Process exited immediately after creation. See output below [2021-11-18T10:49:57.921Z] Executing sh script inside container jnlp of pod test-multiplecontainers-in-node-5d914e4e-3023-4bf0-845d-2-pcxs5 [2021-11-18T10:49:57.921Z] Process exited immediately after creation. Check logs above for more details.
and
[2021-11-18T10:49:58.203Z] java.net.ProtocolException: Expected HTTP 101 response but was '500 Internal Server Error' [2021-11-18T10:49:58.205Z] at okhttp3.internal.ws.RealWebSocket.checkResponse(RealWebSocket.java:229) [2021-11-18T10:49:58.205Z] at okhttp3.internal.ws.RealWebSocket$2.onResponse(RealWebSocket.java:196) [2021-11-18T10:49:58.205Z] at okhttp3.RealCall$AsyncCall.execute(RealCall.java:203) [2021-11-18T10:49:58.205Z] at okhttp3.internal.NamedRunnable.run(NamedRunnable.java:32) [2021-11-18T10:49:58.205Z] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [2021-11-18T10:49:58.205Z] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [2021-11-18T10:49:58.205Z] at java.lang.Thread.run(Thread.java:748) io.fabric8.kubernetes.client.KubernetesClientException: error dialing backend: dial tcp 192.168.3.11:10250: connect: connection refused
- NOTE: the test consists of 100 iteration for each branch, all executed in the same Agent pod. so if we get a KubernetesClientException with a connect refused error if retry again on the same container it will eventually work again
see:
- duplicates
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JENKINS-59652 [kubernetes plugin] Protect Jenkins agent pods from eviction
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- Open
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- is related to
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- Open
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- Resolved
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- relates to
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- Resolved
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- Closed
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