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Image building fails when DOCKER_HOST is set to a local socket prefixed with unix:// #22300

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schnatterer opened this issue Jul 10, 2020 · 5 comments
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Image building fails when DOCKER_HOST is set to a local socket prefixed with unix:// #22300

schnatterer opened this issue Jul 10, 2020 · 5 comments
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@wilkinsona
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type: bug A general bug
Milestone
2.3.2

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@schnatterer
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schnatterer commented Jul 10, 2020 •
edited

On our build server we have an environment varialbe DOCKER_HOST="unix:///var/run/docker.sock" set.
This has not been a problem with the docker client nor with the io.fabric8: docker-maven-plugin.

spring-boot:build-image fails, though.

This can be reproduced locally like so:

export DOCKER_HOST="unix:///var/run/docker.sock"
mvn spring-boot:build-image -DskipTests -X
...
[ERROR] Failed to execute goal org.springframework.boot:spring-boot-maven-plugin:2.3.1.RELEASE:build-image (default-cli) on project test: Execution default-cli of goal org.springframework.boot:spring-boot-maven-plugin:2.3.1.RELEASE:build-image failed: Connection to the Docker daemon at '/var/run/docker.sock' failed with error "/var/run/docker.sock: Name or service not known"; ensure the Docker daemon is running and accessible: Unknown host /var/run/docker.sock: Name or service not known -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.springframework.boot:spring-boot-maven-plugin:2.3.1.RELEASE:build-image (default-cli) on project test: Execution default-cli of goal org.springframework.boot:spring-boot-maven-plugin:2.3.1.RELEASE:build-image failed: Connection to the Docker daemon at '/var/run/docker.sock' failed with error "/var/run/docker.sock: Name or service not known"; ensure the Docker daemon is running and accessible
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:215)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:156)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:148)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)
    at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:56)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:956)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:288)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:192)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
    at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:566)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:289)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:229)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:415)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:356)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
    at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:566)
    at org.apache.maven.wrapper.BootstrapMainStarter.start (BootstrapMainStarter.java:39)
    at org.apache.maven.wrapper.WrapperExecutor.execute (WrapperExecutor.java:122)
    at org.apache.maven.wrapper.MavenWrapperMain.main (MavenWrapperMain.java:55)
Caused by: org.apache.maven.plugin.PluginExecutionException: Execution default-cli of goal org.springframework.boot:spring-boot-maven-plugin:2.3.1.RELEASE:build-image failed: Connection to the Docker daemon at '/var/run/docker.sock' failed with error "/var/run/docker.sock: Name or service not known"; ensure the Docker daemon is running and accessible
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:148)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:210)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:156)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:148)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)
    at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:56)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:956)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:288)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:192)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
    at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:566)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:289)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:229)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:415)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:356)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
    at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:566)
    at org.apache.maven.wrapper.BootstrapMainStarter.start (BootstrapMainStarter.java:39)
    at org.apache.maven.wrapper.WrapperExecutor.execute (WrapperExecutor.java:122)
    at org.apache.maven.wrapper.MavenWrapperMain.main (MavenWrapperMain.java:55)
Caused by: org.springframework.boot.buildpack.platform.docker.transport.DockerConnectionException: Connection to the Docker daemon at '/var/run/docker.sock' failed with error "/var/run/docker.sock: Name or service not known"; ensure the Docker daemon is running and accessible
    at org.springframework.boot.buildpack.platform.docker.transport.HttpClientTransport.execute (HttpClientTransport.java:141)
    at org.springframework.boot.buildpack.platform.docker.transport.HttpClientTransport.post (HttpClientTransport.java:82)
    at org.springframework.boot.buildpack.platform.docker.DockerApi$ImageApi.pull (DockerApi.java:155)
    at org.springframework.boot.buildpack.platform.build.Builder.pullBuilder (Builder.java:85)
    at org.springframework.boot.buildpack.platform.build.Builder.build (Builder.java:63)
    at org.springframework.boot.maven.BuildImageMojo.buildImage (BuildImageMojo.java:136)
    at org.springframework.boot.maven.BuildImageMojo.execute (BuildImageMojo.java:128)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:137)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:210)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:156)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:148)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)
    at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:56)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:956)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:288)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:192)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
    at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:566)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:289)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:229)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:415)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:356)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
    at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:566)
    at org.apache.maven.wrapper.BootstrapMainStarter.start (BootstrapMainStarter.java:39)
    at org.apache.maven.wrapper.WrapperExecutor.execute (WrapperExecutor.java:122)
    at org.apache.maven.wrapper.MavenWrapperMain.main (MavenWrapperMain.java:55)
Caused by: java.net.UnknownHostException: /var/run/docker.sock: Name or service not known
    at java.net.Inet6AddressImpl.lookupAllHostAddr (Native Method)
    at java.net.InetAddress$PlatformNameService.lookupAllHostAddr (InetAddress.java:929)
    at java.net.InetAddress.getAddressesFromNameService (InetAddress.java:1515)
    at java.net.InetAddress$NameServiceAddresses.get (InetAddress.java:848)
    at java.net.InetAddress.getAllByName0 (InetAddress.java:1505)
    at java.net.InetAddress.getAllByName (InetAddress.java:1364)
    at java.net.InetAddress.getAllByName (InetAddress.java:1298)
    at org.apache.http.impl.conn.SystemDefaultDnsResolver.resolve (SystemDefaultDnsResolver.java:45)
    at org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect (DefaultHttpClientConnectionOperator.java:112)
    at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.connect (PoolingHttpClientConnectionManager.java:376)
    at org.apache.http.impl.execchain.MainClientExec.establishRoute (MainClientExec.java:393)
    at org.apache.http.impl.execchain.MainClientExec.execute (MainClientExec.java:236)
    at org.apache.http.impl.execchain.ProtocolExec.execute (ProtocolExec.java:186)
    at org.apache.http.impl.execchain.RetryExec.execute (RetryExec.java:89)
    at org.apache.http.impl.execchain.RedirectExec.execute (RedirectExec.java:110)
    at org.apache.http.impl.client.InternalHttpClient.doExecute (InternalHttpClient.java:185)
    at org.apache.http.impl.client.CloseableHttpClient.execute (CloseableHttpClient.java:118)
    at org.springframework.boot.buildpack.platform.docker.transport.HttpClientTransport.execute (HttpClientTransport.java:128)
    at org.springframework.boot.buildpack.platform.docker.transport.HttpClientTransport.post (HttpClientTransport.java:82)
    at org.springframework.boot.buildpack.platform.docker.DockerApi$ImageApi.pull (DockerApi.java:155)
    at org.springframework.boot.buildpack.platform.build.Builder.pullBuilder (Builder.java:85)
    at org.springframework.boot.buildpack.platform.build.Builder.build (Builder.java:63)
    at org.springframework.boot.maven.BuildImageMojo.buildImage (BuildImageMojo.java:136)
    at org.springframework.boot.maven.BuildImageMojo.execute (BuildImageMojo.java:128)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:137)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:210)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:156)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:148)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)
    at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:56)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:956)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:288)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:192)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
    at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:566)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:289)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:229)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:415)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:356)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
    at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:566)
    at org.apache.maven.wrapper.BootstrapMainStarter.start (BootstrapMainStarter.java:39)
    at org.apache.maven.wrapper.WrapperExecutor.execute (WrapperExecutor.java:122)
    at org.apache.maven.wrapper.MavenWrapperMain.main (MavenWrapperMain.java:55)
[ERROR] 
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/PluginExecutionException

Error does not occurr when

unset DOCKER_HOST
mvn spring-boot:build-image -DskipTests
...
[INFO] BUILD SUCCESS
@spring-projects-issues spring-projects-issues added the status: waiting-for-triage An issue we've not yet triaged label Jul 10, 2020
@wilkinsona
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Thanks for the report. It looks like we're not handling the unix scheme correctly. Could you please try with DOCKER_HOST=/var/run/docker.sock?

@wilkinsona wilkinsona added the status: waiting-for-feedback We need additional information before we can continue label Jul 10, 2020
@schnatterer
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@wilkinsona thanks for your response. The following succeeds:

export DOCKER_HOST='/var/run/docker.sock'
mvn spring-boot:build-image -DskipTests

@spring-projects-issues spring-projects-issues added status: feedback-provided Feedback has been provided and removed status: waiting-for-feedback We need additional information before we can continue labels Jul 10, 2020
@wilkinsona
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@schnatterer Thank you for trying that. We're seeing the same behaviour.

@wilkinsona wilkinsona added type: bug A general bug and removed status: feedback-provided Feedback has been provided status: waiting-for-triage An issue we've not yet triaged labels Jul 10, 2020
@wilkinsona wilkinsona added this to the 2.3.x milestone Jul 10, 2020
@wilkinsona wilkinsona changed the title Maven Plugin, build-image goal: UnknownHostException when env var DOCKER_HOST is set to socket Image building fails when DOCKER_HOST is set to a local socket prefixed with unix:// Jul 10, 2020
schnatterer added a commit to cloudogu/ces-build-lib that referenced this issue Jul 10, 2020
@schnatterer
Remove env var DOCKER_HOST for Docker.mountDockerSocket.
b2c6aa6 
Checking /var/run/docker.sock is the default anyway.
The env var causes an issue with spring boot maven plugin when running maven inside a container:
spring-projects/spring-boot#22300

Unfortunately, unsetting the var with "withEnv(['DOCKER_HOST='])" does not work, but setting an env var would work.

So we remove the env var here, if anyone should need it (even though it's the default behavior!) it can just be set using
"withEnv(['DOCKER_HOST=unix:///var/run/docker.sock'])".
@wilkinsona wilkinsona self-assigned this Jul 10, 2020
@wilkinsona wilkinsona mentioned this issue Jul 10, 2020
Closed
@wilkinsona wilkinsona modified the milestones: 2.3.x, 2.3.2 Jul 10, 2020
@schnatterer
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Thanks for the immediate fix, @wilkinsona

@jamesward
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Note that in Gradle I got this error:

Docker API call to '/var/run/docker.sock/v1.24/images/create?fromImage=gcr.io%2Fpaketo-buildpacks%2Fb
uilder%3Abase-platform-api-0.3' failed with status code 500 "/var/run/docker.sock: Name or service not 
known"

Putting this here for others searching for the error.

@joeyslalom joeyslalom mentioned this issue Jan 26, 2022
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type: bug A general bug
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@jamesward @wilkinsona @schnatterer @spring-projects-issues