The exception rise after jenkins upgrade:
Started by user
Jenkins Admin
Replayed
#50
[Pipeline] Start of Pipeline[Pipeline] properties[Pipeline] podTemplate[Pipeline] // podTemplate[Pipeline] stage[Pipeline]

{ (Declarative: Post Actions)[Pipeline] cleanWsError when executing always post condition: org.jenkinsci.plugins.workflow.steps.MissingContextVariableException: Required context class hudson.FilePath is missing Perhaps you forgot to surround the code with a step that provides this, such as: node at org.jenkinsci.plugins.workflow.steps.CoreStep$Execution.run(CoreStep.java:90) at org.jenkinsci.plugins.workflow.steps.CoreStep$Execution.run(CoreStep.java:71) 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)[Pipeline] }

[Pipeline] // stage[Pipeline] End of Pipelinehudson.remoting.ProxyException: io.fabric8.kubernetes.client.KubernetesClientException: No httpclient implementations found on the context classloader, please ensure your classpath includes an implementation jar
at io.fabric8.kubernetes.client.utils.HttpClientUtils.getHttpClientFactory(HttpClientUtils.java:164)
at io.fabric8.kubernetes.client.utils.HttpClientUtils.createHttpClient(HttpClientUtils.java:145)
at io.fabric8.kubernetes.client.DefaultKubernetesClient.<init>(DefaultKubernetesClient.java:56)
at io.fabric8.kubernetes.client.DefaultKubernetesClient.<init>(DefaultKubernetesClient.java:48)
at org.csanchez.jenkins.plugins.kubernetes.PodTemplateUtils.parseFromYaml(PodTemplateUtils.java:602)
at org.csanchez.jenkins.plugins.kubernetes.PodTemplateUtils.validateYamlContainerNames(PodTemplateUtils.java:639)
at org.csanchez.jenkins.plugins.kubernetes.PodTemplateUtils.validateYamlContainerNames(PodTemplateUtils.java:629)
at org.csanchez.jenkins.plugins.kubernetes.pipeline.PodTemplateStepExecution.start(PodTemplateStepExecution.java:145)
at org.jenkinsci.plugins.workflow.cps.DSL.invokeStep(DSL.java:322)
at org.jenkinsci.plugins.workflow.cps.DSL.invokeMethod(DSL.java:196)
at org.jenkinsci.plugins.workflow.cps.CpsScript.invokeMethod(CpsScript.java:124)
at org.codehaus.groovy.runtime.callsite.PogoMetaClassSite.call(PogoMetaClassSite.java:47)
at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:47)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:116)
at com.cloudbees.groovy.cps.sandbox.DefaultInvoker.methodCall(DefaultInvoker.java:20)
at org.csanchez.jenkins.plugins.kubernetes.pipeline.KubernetesDeclarativeAgentScript.run(KubernetesDeclarativeAgentScript.groovy:51)
at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.inDeclarativeAgent(ModelInterpreter.groovy:594)
at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.call(ModelInterpreter.groovy:76)
at WorkflowScript.run(WorkflowScript:12)
at __cps.transform__(Native Method)
at com.cloudbees.groovy.cps.impl.ContinuationGroup.methodCall(ContinuationGroup.java:90)
at com.cloudbees.groovy.cps.impl.FunctionCallBlock$ContinuationImpl.dispatchOrArg(FunctionCallBlock.java:116)
at com.cloudbees.groovy.cps.impl.FunctionCallBlock$ContinuationImpl.fixArg(FunctionCallBlock.java:85)
at jdk.internal.reflect.GeneratedMethodAccessor138.invoke(Unknown Source)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at com.cloudbees.groovy.cps.impl.ContinuationPtr$ContinuationImpl.receive(ContinuationPtr.java:72)
at com.cloudbees.groovy.cps.impl.ClosureBlock.eval(ClosureBlock.java:46)
at com.cloudbees.groovy.cps.Next.step(Next.java:83)
at com.cloudbees.groovy.cps.Continuable$1.call(Continuable.java:152)
at com.cloudbees.groovy.cps.Continuable$1.call(Continuable.java:146)
at org.codehaus.groovy.runtime.GroovyCategorySupport$ThreadCategoryInfo.use(GroovyCategorySupport.java:136)
at org.codehaus.groovy.runtime.GroovyCategorySupport.use(GroovyCategorySupport.java:275)
at com.cloudbees.groovy.cps.Continuable.run0(Continuable.java:146)
at org.jenkinsci.plugins.workflow.cps.SandboxContinuable.access$001(SandboxContinuable.java:18)
at org.jenkinsci.plugins.workflow.cps.SandboxContinuable.run0(SandboxContinuable.java:51)
at org.jenkinsci.plugins.workflow.cps.CpsThread.runNextChunk(CpsThread.java:187)
at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup.run(CpsThreadGroup.java:420)
at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup$2.call(CpsThreadGroup.java:330)
at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup$2.call(CpsThreadGroup.java:294)
at org.jenkinsci.plugins.workflow.cps.CpsVmExecutorService$2.call(CpsVmExecutorService.java:67)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
at hudson.remoting.SingleLaneExecutorService$1.run(SingleLaneExecutorService.java:139)
at jenkins.util.ContextResettingExecutorService$1.run(ContextResettingExecutorService.java:30)
at jenkins.security.ImpersonatingExecutorService$1.run(ImpersonatingExecutorService.java:70)
at java.base/java.util.concurrent.Executors$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)
Finished: FAILURE

Jenkinsfile:

properties([
  parameters([
    text(
      defaultValue: '',
      name: 'HOSTNAME',
      description: 'Máquina Virtual.',
      trim: true
    )
  ])
])pipeline {
  options

{     ansiColor('xterm')   }

  environment {
    ANSIBLE_VAULT = credentials('passwd_vars')
    //IPAM_TOKEN = credentials('ipam_token')
  }  agent {
    kubernetes

{       cloud 'kubernetes'       defaultContainer 'ansible'       namespace 'devops-tools'       //idleMinutes 1       yaml '''         apiVersion: v1         kind: Pod         metadata:           name: ansible         spec:           containers:             - name: ansible               image: ***/cit_k8s/ansible-oracle:v0.5cit4ms               command: ["tail", "-f", "/dev/null"]               resources:                 requests:                   memory: "2Gi"                   cpu: "500m"                 limits:                   memory: "2Gi"             - name: jnlp               image: jenkins/inbound-agent:jdk11           imagePullSecrets:             - name: regcred       '''.stripIndent()     }

  }  stages {
    stage('Test...') {
      steps {
        script {
          stage('Build Ansible Inventory') {
            sh '''#!/bin/bash
              echo '[vms]'        >/home/ansible/hosts
              echo "${HOSTNAME}" >>/home/ansible/hosts
              
              cat /home/ansible/hosts
            '''
          }
        }
      }
    }
  }
}