我在我的本地机器上安装了Jenkins,它在MacOS High Sierra上运行并安装了docker.我正在尝试运行一个使用docker的简单管道示例.我在管道中添加了以下行：
pipeline {
agent {
docker { image 'node:7-alpine' }
}
stages {
stage('Test') {
steps {
sh 'node --version'
}
}
}
}
然后从WebGUI,我现在点击构建,它失败了.控制台输出显示错误如下：
java.io.IOException: error=2,No such file or directory at java.lang.UNIXProcess.forkAndExec(Native Method) at java.lang.UNIXProcess.<init>(UNIXProcess.java:247) at java.lang.ProcessImpl.start(ProcessImpl.java:134) at java.lang.ProcessBuilder.start(ProcessBuilder.java:1029) at hudson.Proc$LocalProc.<init>(Proc.java:249) at hudson.Proc$LocalProc.<init>(Proc.java:218) at hudson.Launcher$LocalLauncher.launch(Launcher.java:929) at hudson.Launcher$ProcStarter.start(Launcher.java:449) at org.jenkinsci.plugins.docker.workflow.client.DockerClient.launch(DockerClient.java:296) at org.jenkinsci.plugins.docker.workflow.client.DockerClient.launch(DockerClient.java:277) at org.jenkinsci.plugins.docker.workflow.client.DockerClient.launch(DockerClient.java:274) at org.jenkinsci.plugins.docker.workflow.client.DockerClient.version(DockerClient.java:246) at org.jenkinsci.plugins.docker.workflow.WithContainerStep$Execution.start(WithContainerStep.java:141) at org.jenkinsci.plugins.workflow.cps.DSL.invokeStep(DSL.java:229) at org.jenkinsci.plugins.workflow.cps.DSL.invokeMethod(DSL.java:153) at org.jenkinsci.plugins.workflow.cps.cpsScript.invokeMethod(cpsScript.java:122) at org.codehaus.groovy.runtime.callsite.PogoMetaClassSite.call(PogoMetaClassSite.java:48) at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:48) at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:113) at com.cloudbees.groovy.cps.sandBox.DefaultInvoker.methodCall(DefaultInvoker.java:20) Caused: java.io.IOException: Cannot run program "docker": error=2,No such file or directory at java.lang.ProcessBuilder.start(ProcessBuilder.java:1048) at hudson.Proc$LocalProc.<init>(Proc.java:249) at hudson.Proc$LocalProc.<init>(Proc.java:218) at hudson.Launcher$LocalLauncher.launch(Launcher.java:929) at hudson.Launcher$ProcStarter.start(Launcher.java:449) at org.jenkinsci.plugins.docker.workflow.client.DockerClient.launch(DockerClient.java:296) at org.jenkinsci.plugins.docker.workflow.client.DockerClient.launch(DockerClient.java:277) at org.jenkinsci.plugins.docker.workflow.client.DockerClient.launch(DockerClient.java:274) at org.jenkinsci.plugins.docker.workflow.client.DockerClient.version(DockerClient.java:246) at org.jenkinsci.plugins.docker.workflow.WithContainerStep$Execution.start(WithContainerStep.java:141) at org.jenkinsci.plugins.workflow.cps.DSL.invokeStep(DSL.java:229) at org.jenkinsci.plugins.workflow.cps.DSL.invokeMethod(DSL.java:153) at org.jenkinsci.plugins.workflow.cps.cpsScript.invokeMethod(cpsScript.java:122) at org.codehaus.groovy.runtime.callsite.PogoMetaClassSite.call(PogoMetaClassSite.java:48) at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:48) at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:113) at com.cloudbees.groovy.cps.sandBox.DefaultInvoker.methodCall(DefaultInvoker.java:20) at org.jenkinsci.plugins.docker.workflow.Docker$Image.inside(jar:file:/Users/coder/.jenkins/plugins/docker-workflow/WEB-INF/lib/docker-workflow.jar!/org/jenkinsci/plugins/docker/workflow/Docker.groovy:135) at org.jenkinsci.plugins.docker.workflow.Docker.node(jar:file:/Users/coder/.jenkins/plugins/docker-workflow/WEB-INF/lib/docker-workflow.jar!/org/jenkinsci/plugins/docker/workflow/Docker.groovy:66) at org.jenkinsci.plugins.docker.workflow.Docker$Image.inside(jar:file:/Users/coder/.jenkins/plugins/docker-workflow/WEB-INF/lib/docker-workflow.jar!/org/jenkinsci/plugins/docker/workflow/Docker.groovy:123) at org.jenkinsci.plugins.pipeline.modeldeFinition.agent.impl.DockerPipelinescript.runImage(jar:file:/Users/coder/.jenkins/plugins/pipeline-model-deFinition/WEB-INF/lib/pipeline-model-deFinition.jar!/org/jenkinsci/plugins/pipeline/modeldeFinition/agent/impl/DockerPipelinescript.groovy:57) at org.jenkinsci.plugins.pipeline.modeldeFinition.agent.impl.AbstractDockerPipelinescript.configureRegistry(jar:file:/Users/coder/.jenkins/plugins/pipeline-model-deFinition/WEB-INF/lib/pipeline-model-deFinition.jar!/org/jenkinsci/plugins/pipeline/modeldeFinition/agent/impl/AbstractDockerPipelinescript.groovy:74) at org.jenkinsci.plugins.pipeline.modeldeFinition.agent.impl.AbstractDockerPipelinescript.run(jar:file:/Users/coder/.jenkins/plugins/pipeline-model-deFinition/WEB-INF/lib/pipeline-model-deFinition.jar!/org/jenkinsci/plugins/pipeline/modeldeFinition/agent/impl/AbstractDockerPipelinescript.groovy:52) at org.jenkinsci.plugins.pipeline.modeldeFinition.agent.CheckoutScript.checkoutAndRun(jar:file:/Users/coder/.jenkins/plugins/pipeline-model-extensions/WEB-INF/lib/pipeline-model-extensions.jar!/org/jenkinsci/plugins/pipeline/modeldeFinition/agent/CheckoutScript.groovy:66) at org.jenkinsci.plugins.pipeline.modeldeFinition.agent.CheckoutScript.doCheckout(jar:file:/Users/coder/.jenkins/plugins/pipeline-model-extensions/WEB-INF/lib/pipeline-model-extensions.jar!/org/jenkinsci/plugins/pipeline/modeldeFinition/agent/CheckoutScript.groovy:42) at org.jenkinsci.plugins.pipeline.modeldeFinition.agent.impl.LabelScript.run(jar:file:/Users/coder/.jenkins/plugins/pipeline-model-deFinition/WEB-INF/lib/pipeline-model-deFinition.jar!/org/jenkinsci/plugins/pipeline/modeldeFinition/agent/impl/LabelScript.groovy:44) at ___cps.transform___(Native Method) at com.cloudbees.groovy.cps.impl.ContinuationGroup.methodCall(ContinuationGroup.java:57) at com.cloudbees.groovy.cps.impl.FunctionCallBlock$ContinuationImpl.dispatchOrArg(FunctionCallBlock.java:109) at com.cloudbees.groovy.cps.impl.FunctionCallBlock$ContinuationImpl.fixArg(FunctionCallBlock.java:82) at sun.reflect.GeneratedMethodAccessor192.invoke(UnkNown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) 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:174) at com.cloudbees.groovy.cps.Continuable$1.call(Continuable.java:163) at org.codehaus.groovy.runtime.GroovyCategorySupport$ThreadCategoryInfo.use(GroovyCategorySupport.java:122) at org.codehaus.groovy.runtime.GroovyCategorySupport.use(GroovyCategorySupport.java:261) at com.cloudbees.groovy.cps.Continuable.run0(Continuable.java:163) at org.jenkinsci.plugins.workflow.cps.SandBoxContinuable.access$101(SandBoxContinuable.java:34) at org.jenkinsci.plugins.workflow.cps.SandBoxContinuable.lambda$run0$0(SandBoxContinuable.java:59) at org.jenkinsci.plugins.scriptsecurity.sandBox.groovy.GroovySandBox.runInSandBox(GroovySandBox.java:108) at org.jenkinsci.plugins.workflow.cps.SandBoxContinuable.run0(SandBoxContinuable.java:58) at org.jenkinsci.plugins.workflow.cps.cpsThread.runNextChunk(cpsThread.java:174) at org.jenkinsci.plugins.workflow.cps.cpsThreadGroup.run(cpsThreadGroup.java:332) at org.jenkinsci.plugins.workflow.cps.cpsThreadGroup.access$200(cpsThreadGroup.java:83) at org.jenkinsci.plugins.workflow.cps.cpsThreadGroup$2.call(cpsThreadGroup.java:244) at org.jenkinsci.plugins.workflow.cps.cpsThreadGroup$2.call(cpsThreadGroup.java:232) at org.jenkinsci.plugins.workflow.cps.cpsVmExecutorService$2.call(cpsVmExecutorService.java:64) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at hudson.remoting.SingleLaneExecutorService$1.run(SingleLaneExecutorService.java:131) at jenkins.util.ContextResettingExecutorService$1.run(ContextResettingExecutorService.java:28) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745) Finished: FAILURE
为什么会这样？在Jenkins文档中,它们仅提供此语法,并未提及任何其他内容.
解决方法
我遇到了和上面相同的问题.我不确定我的情况与你的TL完全相同; DR是你需要确保Docker可用于Jenkins正在使用的PATH变量.特别是它启动的那个,可以在Jenkins Home下看到 – >管理Jenkins – >系统信息.
就我而言,我在Mac上并通过Homebrew安装了Jenkins.为了解决这个问题,我编辑了/usr/local/opt/jenkins-lts/homebrew.mxcl.jenkins-lts.plist文件并将其更改为以下内容：
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>Label</key>
<string>homebrew.mxcl.jenkins-lts</string>
<key>ProgramArguments</key>
<array>
<string>/usr/libexec/java_home</string>
<string>-v</string>
<string>1.8</string>
<string>--exec</string>
<string>java</string>
<string>-Dmail.smtp.starttls.enable=true</string>
<string>-jar</string>
<string>/usr/local/opt/jenkins-lts/libexec/jenkins.war</string>
<string>--httpListenAddress=127.0.0.1</string>
<string>--httpPort=8080</string>
</array>
<key>Environmentvariables</key>
<dict>
<key>PATH</key>
<string>/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin</string>
</dict>
<key>RunAtLoad</key>
<true/>
</dict>
</plist>
这里的重要部分是：
<key>Environmentvariables</key> <dict> <key>PATH</key> <string>/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin</string> </dict>
在我的例子中,docker在/usr/local/bin中可用.
