Uploaded image for project: 'Jenkins'
  1. Jenkins
  2. JENKINS-69324

UnsupportedClassVersionError: com/trilead/ssh2/ServerHostKeyVerifier

XMLWordPrintable

    • Icon: Bug Bug
    • Resolution: Duplicate
    • Icon: Blocker Blocker
    • trilead-api-plugin
    • None
    • Jenkins 2.346.3
      git-client-plugin 3.11.2
      kubernetes 3690.va_9ddf6635481
      ssh-slaves 1.834.v622da_57f702c

      After recently upgrade on git-client plugin, our slave pod failed checkout repo.

      Jenkins is able to checkout repo on the master node but failed on the slave pod with the same jobDSL in the pipeline job.

      In the logs:

      java.lang.UnsupportedClassVersionError: com/trilead/ssh2/ServerHostKeyVerifier has been compiled by a more recent version of the Java Runtime (class file version 55.0), this version of the Java Runtime only recognizes class file versions up to 52.0
	at java.lang.ClassLoader.defineClass1(Native Method)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:756)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:635)
	at hudson.remoting.RemoteClassLoader.loadClassFile(RemoteClassLoader.java:453)
Caused: java.lang.UnsupportedClassVersionError: Failed to load com.trilead.ssh2.ServerHostKeyVerifier
	at hudson.remoting.RemoteClassLoader.loadClassFile(RemoteClassLoader.java:455)
	at hudson.remoting.RemoteClassLoader.loadRemoteClass(RemoteClassLoader.java:295)
	at hudson.remoting.RemoteClassLoader.loadWithMultiClassLoader(RemoteClassLoader.java:264)
	at hudson.remoting.RemoteClassLoader.findClass(RemoteClassLoader.java:223)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:418)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:351)
	at java.lang.ClassLoader.defineClass1(Native Method)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:756)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:635)
	at hudson.remoting.RemoteClassLoader.loadClassFile(RemoteClassLoader.java:453)
Also:   hudson.remoting.Channel$CallSiteStackTrace: Remote call to JNLP4-connect connection from 10.193.21.68/10.193.21.68:55966
		at hudson.remoting.Channel.attachCallSiteStackTrace(Channel.java:1784)
		at hudson.remoting.UserRequest$ExceptionResponse.retrieve(UserRequest.java:356)
		at hudson.remoting.Channel.call(Channel.java:1000)
		at hudson.FilePath.act(FilePath.java:1194)
		at hudson.FilePath.act(FilePath.java:1183)
		at org.jenkinsci.plugins.gitclient.Git.getClient(Git.java:140)
		at hudson.plugins.git.GitSCM.createClient(GitSCM.java:916)
		at hudson.plugins.git.GitSCM.createClient(GitSCM.java:847)
		at hudson.plugins.git.GitSCM.checkout(GitSCM.java:1297)
		at org.jenkinsci.plugins.workflow.steps.scm.SCMStep.checkout(SCMStep.java:129)
		at org.jenkinsci.plugins.workflow.steps.scm.SCMStep$StepExecutionImpl.run(SCMStep.java:97)
		at org.jenkinsci.plugins.workflow.steps.scm.SCMStep$StepExecutionImpl.run(SCMStep.java:84)
		at org.jenkinsci.plugins.workflow.steps.SynchronousNonBlockingStepExecution.lambda$start$0(SynchronousNonBlockingStepExecution.java:47)
		at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
		at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
		at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
		at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
		at java.base/java.lang.Thread.run(Thread.java:829)
Caused: java.lang.UnsupportedClassVersionError: Failed to load org.jenkinsci.plugins.gitclient.verifier.AbstractJGitHostKeyVerifier
	at hudson.remoting.RemoteClassLoader.loadClassFile(RemoteClassLoader.java:455)
	at hudson.remoting.RemoteClassLoader.loadRemoteClass(RemoteClassLoader.java:287)
	at hudson.remoting.RemoteClassLoader.loadWithMultiClassLoader(RemoteClassLoader.java:264)
	at hudson.remoting.RemoteClassLoader.findClass(RemoteClassLoader.java:223)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:418)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:351)
	at java.lang.Class.getDeclaredMethods0(Native Method)
	at java.lang.Class.privateGetDeclaredMethods(Class.java:2701)
	at java.lang.Class.getDeclaredMethod(Class.java:2128)
	at java.io.ObjectStreamClass.getPrivateMethod(ObjectStreamClass.java:1643)
	at java.io.ObjectStreamClass.access$1700(ObjectStreamClass.java:79)
	at java.io.ObjectStreamClass$3.run(ObjectStreamClass.java:520)
	at java.io.ObjectStreamClass$3.run(ObjectStreamClass.java:494)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.io.ObjectStreamClass.<init>(ObjectStreamClass.java:494)
	at java.io.ObjectStreamClass.lookup(ObjectStreamClass.java:391)
	at java.io.ObjectStreamClass.initNonProxy(ObjectStreamClass.java:681)
	at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:2003)
	at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1850)
	at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:2003)
	at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1850)
	at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2160)
	at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1667)
	at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2405)
	at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:2329)
	at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2187)
	at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1667)
	at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2405)
	at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:2329)
	at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2187)
	at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1667)
	at java.io.ObjectInputStream.readObject(ObjectInputStream.java:503)
	at java.io.ObjectInputStream.readObject(ObjectInputStream.java:461)
	at hudson.remoting.UserRequest.deserialize(UserRequest.java:289)
	at hudson.remoting.UserRequest.perform(UserRequest.java:189)
	at hudson.remoting.UserRequest.perform(UserRequest.java:54)
	at hudson.remoting.Request$2.run(Request.java:376)
	at hudson.remoting.InterceptingExecutorService.lambda$wrap$0(InterceptingExecutorService.java:78)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at hudson.remoting.Engine$1.lambda$newThread$0(Engine.java:119)
	at java.lang.Thread.run(Thread.java:748)
Caused: java.io.IOException: Remote call on JNLP4-connect connection from 10.193.21.68/10.193.21.68:55966 failed
	at hudson.remoting.Channel.call(Channel.java:1004)
	at hudson.FilePath.act(FilePath.java:1194)
	at hudson.FilePath.act(FilePath.java:1183)
	at org.jenkinsci.plugins.gitclient.Git.getClient(Git.java:140)
	at hudson.plugins.git.GitSCM.createClient(GitSCM.java:916)
	at hudson.plugins.git.GitSCM.createClient(GitSCM.java:847)
	at hudson.plugins.git.GitSCM.checkout(GitSCM.java:1297)
	at org.jenkinsci.plugins.workflow.steps.scm.SCMStep.checkout(SCMStep.java:129)
	at org.jenkinsci.plugins.workflow.steps.scm.SCMStep$StepExecutionImpl.run(SCMStep.java:97)
	at org.jenkinsci.plugins.workflow.steps.scm.SCMStep$StepExecutionImpl.run(SCMStep.java:84)
	at org.jenkinsci.plugins.workflow.steps.SynchronousNonBlockingStepExecution.lambda$start$0(SynchronousNonBlockingStepExecution.java:47)
	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
	at java.base/java.lang.Thread.run(Thread.java:829)

      Our slave pod Dockerfile:

      FROM openjdk:8-jdk

RUN apt-get clean
RUN apt-get update
RUN apt-get install -y \
    apt-transport-https \
    ca-certificates \
    curl \
    gnupg \
    lsb-release \
    gnupg-agent \
    software-properties-common

RUN curl -fsSL https://download.docker.com/linux/debian/gpg | apt-key add -
RUN add-apt-repository \
   "deb [arch=amd64] https://download.docker.com/linux/debian \
   $(lsb_release -cs) \
   stable"
RUN apt-get update
RUN apt-get install -y \
    docker-ce docker-ce-cli containerd.io

RUN curl -O https://aliyuncli.alicdn.com/aliyun-cli-linux-3.0.90-amd64.tgz
RUN tar zxvf aliyun-cli-linux-3.0.90-amd64.tgz -C /
RUN mv aliyun /usr/local/bin/aliyun

ARG MAVEN_VERSION=3.6.3
ARG USER_HOME_DIR="/root"
ARG SHA=c35a1803a6e70a126e80b2b3ae33eed961f83ed74d18fcd16909b2d44d7dada3203f1ffe726c17ef8dcca2dcaa9fca676987befeadc9b9f759967a8cb77181c0
ARG BASE_URL=https://apache.osuosl.org/maven/maven-3/${MAVEN_VERSION}/binaries

RUN mkdir -p /usr/share/maven /usr/share/maven/ref \
  && curl -fsSL -o /tmp/apache-maven.tar.gz ${BASE_URL}/apache-maven-${MAVEN_VERSION}-bin.tar.gz \
  && echo "${SHA}  /tmp/apache-maven.tar.gz" | sha512sum -c - \
  && tar -xzf /tmp/apache-maven.tar.gz -C /usr/share/maven --strip-components=1 \
  && rm -f /tmp/apache-maven.tar.gz \
  && ln -s /usr/share/maven/bin/mvn /usr/bin/mvn

ENV MAVEN_HOME /usr/share/maven
ENV MAVEN_CONFIG "$USER_HOME_DIR/.m2"

RUN apt-get install -y \
    python3-pip \
    vim \
    iputils-ping

RUN curl -O -L https://github.com/stedolan/jq/releases/download/jq-1.6/jq-linux64
RUN chmod +x jq-linux64
RUN mv jq-linux64 /usr/local/bin/jq

RUN pip3 install yq==2.14.0
RUN pip3 install awscli==1.18.6 --upgrade

RUN curl -fsSL https://deb.nodesource.com/setup_14.x | bash -
RUN apt-get install -y nodejs

      Our pipeline stage:

              stage("Code Build") {
            agent {
                kubernetes {
                    yaml libraryResource('podsTemplate/common-dev.yaml')
                }
            }
            steps {
                cleanWs()
                echo "checkout service code in k8s agent"
                checkout([$class: 'GitSCM',
                          branches: [[name: 'develop']],
                          doGenerateSubmoduleConfigurations: false,
                          extensions: [[$class: 'RelativeTargetDirectory',
                                        relativeTargetDir: 'service-code']],
                          submoduleCfg: [],
                          userRemoteConfigs: [[credentialsId: '******',
                                               url: '******']]])
                echo "start to build from k8s pod"
                container(name: 'docker') {
                    retry(1) {
                        timeout(time: 1, unit: 'HOURS') {
                            timestamps {
                                sh '''
                                    cd $WORKSPACE/service-code
                                    mvn clean verify
                                '''
                            }
                        }
                    }
                }
            }
        }

      our pod template:

      apiVersion: v1
kind: Pod
spec:
  containers:
    - name: jnlp
      image: jenkins/inbound-agent:4.7-1
      resources:
        requests:
          cpu: "1000m"
          memory: "1024Mi"
        limits:
          cpu: "2000m"
          memory: "2048Mi"
      env:
        - name: CONTAINER_ENV_VAR
          value: jnlp
    - name: docker
      image: image url
      imagePullPolicy: Always
      command: ['cat']
      tty: true
      volumeMounts:
        - name: dockersock
          mountPath: /var/run/docker.sock
      resources:
        requests:
          cpu: 2000m
          memory: 2048Mi
        limits:
          cpu: 2000m
          memory: 2048Mi
  volumes:
    - name: dockersock
      hostPath:
        path: /var/run/docker.sock

            markewaite Mark Waite
            yss0180 shaosheng yin
            Votes:
            0 Vote for this issue
            Watchers:
            2 Start watching this issue

              Created:
              Updated:
              Resolved: