Details
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Bug
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Status: Closed (View Workflow)
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Major
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Resolution: Fixed
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None
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Plugin version: 1.6
Description
in https://github.com/jenkinsci/docker-custom-build-environment-plugin/blob/docker-custom-build-environment-1.6.0/src/main/java/com/cloudbees/jenkins/plugins/docker_build_env/Docker.java#L192, the getDocker0Ip method is using ifconfig docker0 but the result cannot be used in https://github.com/jenkinsci/docker-custom-build-environment-plugin/blob/docker-custom-build-environment-1.6.0/src/main/java/com/cloudbees/jenkins/plugins/docker_build_env/Docker.java#L164 for the docker command --add-host parameter.
$ ifconfig docker0 invalid value "dockerhost:flags=4099<UP,BROADCAST,MULTICAST>" for flag --add-host: invalid IP address in add-host: "flags=4099<UP,BROADCAST,MULTICAST>" See 'docker run --help'. FATAL: Failed to run docker image java.lang.RuntimeException: Failed to run docker image at com.cloudbees.jenkins.plugins.docker_build_env.Docker.runDetached(Docker.java:186) at com.cloudbees.jenkins.plugins.docker_build_env.DockerBuildWrapper.startBuildContainer(DockerBuildWrapper.java:176) at com.cloudbees.jenkins.plugins.docker_build_env.DockerBuildWrapper.setUp(DockerBuildWrapper.java:151) at hudson.model.Build$BuildExecution.doRun(Build.java:154) at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:536) at hudson.model.Run.execute(Run.java:1741) at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43) at hudson.model.ResourceController.execute(ResourceController.java:98) at hudson.model.Executor.run(Executor.java:374) Finished: FAILURE
Attachments
Issue Links
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Daniel Spilker
added a comment - Daniel Spilker
added a comment - pull request: https://github.com/jenkinsci/docker-custom-build-environment-plugin/pull/30 
Michael Sierks
added a comment - I had a similar problem on debian:jessie.
The ifconfig command was not found, it only existed in /usr/sbin/. I fixed by symlinking /usr/sbin/ifconfig to /usr/bin/ifconfig. and adding the netdev group to the jenkins user.
Is there a way to make this less system dependent ?
Michael Sierks
added a comment - I had a similar problem on debian:jessie.
The ifconfig command was not found, it only existed in /usr/sbin/. I fixed by symlinking /usr/sbin/ifconfig to /usr/bin/ifconfig. and adding the netdev group to the jenkins user.
Is there a way to make this less system dependent ? Daniel Spilker
added a comment - Ah, right. Something like this should do:
java.net.NetworkInterface docker0 = java.net.NetworkInterface.getByName('docker0'); String ip = docker0.getInterfaceAddresses().get(0).getAddress().getHostAddress();
Daniel Spilker
added a comment - Ah, right. Something like this should do:
java.net.NetworkInterface docker0 = java.net.NetworkInterface.getByName( 'docker0' );
String ip = docker0.getInterfaceAddresses().get(0).getAddress().getHostAddress();
Yoann Dubreuil
added a comment - Yoann Dubreuil
added a comment - Following daspilker idea, I wrote a fix using native Java API in PR-32 Code changed in jenkins
User: Yoann Dubreuil
Path:
src/main/java/com/cloudbees/jenkins/plugins/docker_build_env/Docker.java
http://jenkins-ci.org/commit/docker-custom-build-environment-plugin/7b9b8a689eb7ec9036bdea322b56d125e1102a07
Log:
JENKINS-30512 use java API instead of ifconfig to lookup docker0 ipv4 address
Code changed in jenkins
User: Nicolas De loof
Path:
src/main/java/com/cloudbees/jenkins/plugins/docker_build_env/Docker.java
http://jenkins-ci.org/commit/docker-custom-build-environment-plugin/098a4b8d54d41ae933382668d1e36fd485bdef55
Log:
Merge pull request #32 from ydubreuil/fix-JENKINS-30512
JENKINS-30512 use java API instead of ifconfig to lookup docker0 ipv4 address
Yoann Dubreuil
added a comment - Fixed released in 1.6.1 
I have this problem on CentOS 7.1. The output of ifconfig has changed:
# ifconfig docker0 docker0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500 inet 10.3.0.1 netmask 255.255.255.0 broadcast 0.0.0.0 ether 02:42:26:cc:99:58 txqueuelen 0 (Ethernet) RX packets 0 bytes 0 (0.0 B) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 0 bytes 0 (0.0 B) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0In CentOS 6.5 it works:
$ ifconfig docker0 docker0 Link encap:Ethernet HWaddr 00:00:00:00:00:00 inet addr:10.3.0.1 Bcast:0.0.0.0 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)