为什么在使用Jenkins dockerfile代理时，它使用无效用户运行容器? [英] Why when using Jenkins dockerfile agent does it run container with invalid user?
问题描述
我有一个非常标准的Dockerfile:
I have a pretty standard Dockerfile:
FROM python:3.6.5
WORKDIR /src
COPY . /src
... install and configure things ...
和一个非常标准的Jenkinsfile
and a pretty standard Jenkinsfile
pipeline {
agent none
stages {
stage('Test') {
agent { dockerfile true }
steps {
dir('/src') {
sh 'pwd' // any command
}
}
}
}
}
但是，当它在Jenkins中运行时(我应该提到我当前正在使用Docker容器中的本地Jenkins实例进行测试)，Dockerfile会成功构建，但是当Jenkins尝试运行该步骤时，我会得到以下输出:
However when this is run in Jenkins (I should mention I'm currently testing using a local Jenkins instance in a docker container) the Dockerfile builds successfully but when Jenkins attempts to run the step I get the following output:
[Pipeline] withDockerContainer
Jenkins seems to be running inside container aaee62f2a28e29b94c13fcdc08c1a82ef7baed48beabe54579db07b2fbd26b23
$ docker run -t -d -u 1000:1000 -w "/var/jenkins_home/workspace/My Project" --volumes-from aaee62f2a28e29b94c13fcdc08c1a82ef7baed48beabe54579db07b2fbd26b23 -e ******** -e ******** -e ******** -e ******** -e ******** -e ******** -e ******** -e ******** -e ******** -e ******** -e ******** -e ******** -e ******** -e ******** -e ******** -e ******** -e ******** -e ******** -e ******** -e ******** -e ******** -e ******** -e ******** -e ******** -e ******** -e ******** -e ******** -e ******** -e ******** -e ******** 12724611f0bf2363c9eee7288654e43eca2aabaf cat
$ docker top 4e29bc102d8f4e6b4ffc142fc06eb706e95b00fa6190b2927f4f79f0cfa53af5 -eo pid,comm
[Pipeline] {
[Pipeline] withEnv
[Pipeline] {
[Pipeline] dir
Running in /src
[Pipeline] {
[Pipeline] sh
[Pipeline] }
[Pipeline] // dir
[Pipeline] }
[Pipeline] // withEnv
[Pipeline] }
$ docker stop --time=1 4e29bc102d8f4e6b4ffc142fc06eb706e95b00fa6190b2927f4f79f0cfa53af5
$ docker rm -f 4e29bc102d8f4e6b4ffc142fc06eb706e95b00fa6190b2927f4f79f0cfa53af5
这是不期望的，并且在步骤完成"时会显示以下失败消息:
which is not expected, and when the step is "finished" there is the following failure message:
java.nio.file.AccessDeniedException: /src
at sun.nio.fs.UnixException.translateToIOException(UnixException.java:84)
at sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:102)
at sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:107)
at sun.nio.fs.UnixFileSystemProvider.createDirectory(UnixFileSystemProvider.java:384)
at java.nio.file.Files.createDirectory(Files.java:674)
at java.nio.file.Files.createAndCheckIsDirectory(Files.java:781)
at java.nio.file.Files.createDirectories(Files.java:767)
at hudson.FilePath.mkdirs(FilePath.java:3273)
at hudson.FilePath.access$1300(FilePath.java:213)
at hudson.FilePath$Mkdirs.invoke(FilePath.java:1254)
at hudson.FilePath$Mkdirs.invoke(FilePath.java:1250)
at hudson.FilePath.act(FilePath.java:1078)
at hudson.FilePath.act(FilePath.java:1061)
at hudson.FilePath.mkdirs(FilePath.java:1246)
at org.jenkinsci.plugins.durabletask.FileMonitoringTask$FileMonitoringController.<init>(FileMonitoringTask.java:181)
at org.jenkinsci.plugins.durabletask.BourneShellScript$ShellController.<init>(BourneShellScript.java:221)
at org.jenkinsci.plugins.durabletask.BourneShellScript$ShellController.<init>(BourneShellScript.java:210)
at org.jenkinsci.plugins.durabletask.BourneShellScript.launchWithCookie(BourneShellScript.java:131)
at org.jenkinsci.plugins.durabletask.FileMonitoringTask.launch(FileMonitoringTask.java:99)
at org.jenkinsci.plugins.workflow.steps.durable_task.DurableTaskStep$Execution.start(DurableTaskStep.java:305)
at org.jenkinsci.plugins.workflow.cps.DSL.invokeStep(DSL.java:268)
at org.jenkinsci.plugins.workflow.cps.DSL.invokeMethod(DSL.java:176)
at org.jenkinsci.plugins.workflow.cps.CpsScript.invokeMethod(CpsScript.java:122)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:93)
at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)
at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1213)
at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1022)
at org.codehaus.groovy.runtime.callsite.PogoMetaClassSite.call(PogoMetaClassSite.java:42)
at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:48)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:113)
at org.kohsuke.groovy.sandbox.impl.Checker$1.call(Checker.java:157)
at org.kohsuke.groovy.sandbox.GroovyInterceptor.onMethodCall(GroovyInterceptor.java:23)
at org.jenkinsci.plugins.scriptsecurity.sandbox.groovy.SandboxInterceptor.onMethodCall(SandboxInterceptor.java:155)
at org.kohsuke.groovy.sandbox.impl.Checker$1.call(Checker.java:155)
at org.kohsuke.groovy.sandbox.impl.Checker.checkedCall(Checker.java:159)
at org.kohsuke.groovy.sandbox.impl.Checker.checkedCall(Checker.java:129)
at org.kohsuke.groovy.sandbox.impl.Checker.checkedCall(Checker.java:129)
at com.cloudbees.groovy.cps.sandbox.SandboxInvoker.methodCall(SandboxInvoker.java:17)
at WorkflowScript.run(WorkflowScript:23)
at ___cps.transform___(Native Method)
at com.cloudbees.groovy.cps.impl.ContinuationGroup.methodCall(ContinuationGroup.java:57)
at com.cloudbees.groovy.cps.impl.FunctionCallBlock$ContinuationImpl.dispatchOrArg(FunctionCallBlock.java:109)
at com.cloudbees.groovy.cps.impl.FunctionCallBlock$ContinuationImpl.fixArg(FunctionCallBlock.java:82)
at sun.reflect.GeneratedMethodAccessor143.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.cloudbees.groovy.cps.impl.ContinuationPtr$ContinuationImpl.receive(ContinuationPtr.java:72)
at com.cloudbees.groovy.cps.impl.ConstantBlock.eval(ConstantBlock.java:21)
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:129)
at org.codehaus.groovy.runtime.GroovyCategorySupport.use(GroovyCategorySupport.java:268)
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:136)
at org.jenkinsci.plugins.workflow.cps.SandboxContinuable.run0(SandboxContinuable.java:58)
at org.jenkinsci.plugins.workflow.cps.CpsThread.runNextChunk(CpsThread.java:182)
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 jenkins.security.ImpersonatingExecutorService$1.run(ImpersonatingExecutorService.java:59)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Finished: FAILURE
问题似乎与以下行有关:docker run -t -d -u 1000:1000 Dockerfile构建的容器上没有UID 1000的用户，命令由root运行，因此将目录更改为/src时， jenkins指定无法访问文件.
The problem appears to be with this line: docker run -t -d -u 1000:1000 there is no user with UID 1000 on the container built by the Dockerfile, commands are run by root and therefore with the directory change to /src the "user" that jenkins specifies has no access to the files.
如何防止Jenkins默认尝试使用-u 1000:1000?或应采取什么步骤解决此问题.从理论上讲，我可以在dockerfile中添加chmod 777，但这似乎是一个丑陋的解决方法
How do you prevent Jenkins from trying to use -u 1000:1000 by default? or what steps should I take to resolve this issue. I could in theory add a chmod 777 into the dockerfile but this seems like an ugly workaround
更新:
我已将RUN chmod -R 777 /src添加到我的Dockerfile中，但问题仍然存在.如果我从Docker Jenkins容器内部手动运行容器，则:
I added RUN chmod -R 777 /src to my Dockerfile but the issue remains. If I run the container manually from inside the docker Jenkins container:
docker run -it -u 1000:1000 -w "/var/jenkins_home/workspace/My Project" --volumes-from aaee62f2a28e29b94c13fcdc08c1a82ef7baed48beabe54579db07b2fbd26b23 12724611f0bf2363c9eee7288654e43eca2aabaf /bin/bash
和cd /src我可以访问文件，并且可以执行例如touch newfile没有问题.尽管java.nio.file.AccessDeniedException: /src仍然出现在日志中
and cd /src I have access to the files and can do e.g. touch newfile without issues. The java.nio.file.AccessDeniedException: /src still appears in the logs though
推荐答案
It seems that you can override/pass docker arguments according to this, so you might try this in order to override the default using uid/gid
参数:一个字符串.要传递给docker run的运行时参数.
args: A string. Runtime arguments to pass to docker run.
此选项对docker和dockerfile有效.
This option is valid for docker and dockerfile.
agent {
dockerfile {
args '-u 0:0' // or try to make it -u root
}
}
这篇关于为什么在使用Jenkins dockerfile代理时，它使用无效用户运行容器?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
