We have a Jenkinsfile that uses the docker plugin to run a script inside a given container. This works fine for some images, but fails immediately with a -1 exit code on others. We've reduced the error down to a simple sleep
. This is the Jenkinsfile:
node("docker") {
def wheezy_image = docker.image("pyca/cryptography-runner-wheezy")
wheezy_image.pull()
wheezy_image.inside {
sh """sleep 120"""
}
}
And here's the jenkins output
+ docker pull pyca/cryptography-runner-wheezy
Using default tag: latest
latest: Pulling from pyca/cryptography-runner-wheezy
Digest: sha256:ff5d9f661b05d831ace3811eec9f034fed7994279ff2307695a2cb7c32d6fa11
Status: Image is up to date for pyca/cryptography-runner-wheezy:latest
[Pipeline] sh
[3525-VE2ETALXLYB7VN3] Running shell script
+ docker inspect -f . pyca/cryptography-runner-wheezy
.
[Pipeline] withDockerContainer
$ docker run -t -d -u 1000:1000 -w /var/jenkins_home/workspace/3525-VE2ETALXLYB7VN3 --volumes-from 1382a2e208dd5575acd26f11678855282fc854319096de60cef6818ea279f25f -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 ******** --entrypoint cat pyca/cryptography-runner-wheezy
[Pipeline] {
[Pipeline] sh
[3525-VE2ETALXLYB7VN3] Running shell script
+ sleep 120
[Pipeline] }
$ docker stop --time=1 887db8989e03a10dd89132b1ac6e18261ee4a49e6afe8b0c5568326b6c023654
$ docker rm -f 887db8989e03a10dd89132b1ac6e18261ee4a49e6afe8b0c5568326b6c023654
[Pipeline] // withDockerContainer
[Pipeline] }
[Pipeline] // node
[Pipeline] End of Pipeline
GitHub has been notified of this commit’s build result
ERROR: script returned exit code -1
Finished: FAILURE
Interestingly, if the sleep is less than 1 second then this passes (but the 120 second sleep works just fine on many of the other images).
For reference, here is a jessie image that works, and a wheezy image that does not.
Does anyone know what might be going on here?
To exit out of the docker container bash shell. Just run exit or hit ctrl-D like you normally would.
Docker supports a keyboard combination to gracefully detach from a container. Press Ctrl-P, followed by Ctrl-Q, to detach from your connection. You'll be dropped back into your shell but the previously attached process will remain alive, keeping your container running.
Looks to be related to your image not having ps
installed. I just took the debian base and was able to replicate that it wouldn't work. Installed ps, and it did work. You can also use the withRun function and it works. Here's my Jenkinsfile:
node("docker") {
// Weezy that also ran... apt-get update && apt-get install -y procps
def wheezy_image = docker.image("smalone/weezy-ps-test")
wheezy_image.pull()
wheezy_image.inside {
sh 'sleep 2'
}
// Base image for weezy-ps-test that has no ps installed using withRun() instead of inside()
wheezy_image = docker.image("debian:wheezy")
wheezy_image.pull()
wheezy_image.withRun { c ->
sh 'sleep 2'
}
// Base image for weezy-ps-test that has no ps installed
wheezy_image = docker.image("debian:wheezy")
wheezy_image.pull()
wheezy_image.inside {
sh 'sleep 2'
}
}
I'll open a ticket on the docker pipeline plugin, if one doesn't exist.
EDIT: There was a ticket open, but they hadn't found the root cause yet. See: https://issues.jenkins-ci.org/browse/JENKINS-40101 to track the status of this issue!
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