Hi I have a Jenkins where I want to run a job in a remote machine using a docker image that I already have on that machine since my cluster does not have any internet access.
I have seen Jenkins docker plugin, but it seems it´s using a docker repository to get the images.
My question is, which is the best Jenkins plugin to acomplish this?. Run a Jenkins job in a docker container using an image in the machine where the job is running?
Regards.
Related
I want to run my Jenkins behind k8s. We can achieve that with any standard helm chart or our own manifest files. In this case, Jenkins (master only) will run inside a container (Pod).
Now I also want to have a pipeline job that uses docker agent as described here
I am getting confused, about
how and where this docker container will be run (on the same node where Jenkins is running? and suppose the node capacity is over then it needs to run docker agent on a different node)
how does Jenkins will authenticate to run containers on k8s nodes?
I saw the Kubernetes plugin/docker plugin. But those plugins create containers beforehand (or at least we need to set up a template, which decides how containers will start, which image will be used and many more) and connects Jenkins with help of JNLP / ssh. I lose the flexibility to have an image as an agent in that case.
going further, I also like to build custom images on the fly with help of Dockerfile shipped along with code. An example is available in the same link.
I believe this documentation is answering all of your questions: https://devopscube.com/jenkins-build-agents-kubernetes/
With this method, you are not losing your flexibility because your Jenkins master going to create a K8s pod on the fly. Yes, additionally you need JNLP authentication but you can think of that as a sidecar container.
About your first question: If you use exactly that way, your Jenkins jobs going to run under Jenkins master with the same Docker that your Jenkins Master is using.
We have a Jenkins setup with the Docker plugin installed and want to run our build jobs in Docker Containers based on private images.
Here is what we have:
Jenkins master runs on "bare metal" VM, no containerization
We have a second VM with a Docker Engine running on it, the Docker engine port from this VM is exposed and accessible from the Jenkins master via TCP
We created several Docker Templates (in the global Jenkins settings) and can use them in our build jobs, as long as we use the "never pull" strategy for the images
The problems occurs when we try to pull an image from our private registry (we use Artifactory for this and it is accessible from the Docker Engine, since we can successfully push images from our Docker VM).
Whenever we start a job in Jenkins that uses such an image which should always be pulled from the private registry, we see All nodes of label ‘OUR_IMAGE_LABEL’ are offline and the job is hanging forever.
The strange thing is that we don't see anything related to such a job in the Jenkins log (/var/log/jenkins/jenkins.log on the Jenkins master) nor do we see anything in the Docker logs (/var/log/messages on the VM with the Docker Engine).
Things work perfectly fine, if we switch back to the "Never pull" strategy and have the image locally available on the Docker engine.
Any ideas
why things are not working
how we could get at least some log messages regarding what Jenkins is doing, when it shows All nodes of label ‘OUR_IMAGE_LABEL’ are offline
I have installed CoreOS as my build environment. I installed Jenkins server as a docker container in CoreOS. And I created a free style project on the Jenkins server to build my project. How can I configure the build run on docker containers on the CoreOS?
So the structure is: CoreOS is my physical machine. Jenkins server is running in a docker container in the CoreOS. And I want to launch more docker containers to run my application. How can I achieve this? The hardest part I think is to launch a docker container in CoreOS from Jenkins JOB. I want to start a new docker container ever time for a build.
I'm not familiar with Jenkins, but I would suggest that you take a look at the docker-machine and docker-compose utilities.
You should be able to have Jenkins use one of those to have the host start your build container.
I wanted to be able to start multiple linked containers on demand, with a restrict where this build run tag like I do with docker plugin for one single container.
I'm currently running Jenkins inside a docker container and configured a slave cloud using docker plugin to provide a single slave container per job, this provisioning is done on demand by the plugin.
But now I have some new requirements, example:
Starting nodejs application container linked to selenium grid container for protractor e2e testing
Starting a container with a nodejs application linked to a redis server in another container.
Currently, docker plugin does not support linked containers so how should I approach those scenarios?
I know how to start multiple linked containers with docker-compose but there are currently no Jenkins plugins for compose.
I was able to get docker-in-docker working, and thought about having a DIND job with using compose in a pre-setup, but I'm finding this a quite inelegant solution.
Is there a plugin-wise solution?
Docker Slaves Plugin new version's side container feature solves that problem now!
I have two VM, on one VM I have docker and on another I have Jenkins .I have shell script for running docker, which is placed on server which have docker on it. But I need Jenkins to execute this shell script, from pre-build step.
I am facing problem with this process.
It will be very helpful if any one can provide the detail steps
Thanks in Advance
There are different approaches to achieve that.
One is to install Jenkins slave on the VM which has docker on and have your Jenkins master run the whole job on the slave.
Or you could install one of Publish Over SSH Plugin or SSH plugin to execute commands remotely (if your docker VM has SSH access)
If your network is sufficiently secured from the outside, you could expose the docker API socket via a TCP port on your docker-machine and run the docker commands from your jenkins machine, using the remote tcp-port.
Basic idea is outlined here in the section "Bind Docker to another host/port or a Unix socket"
Cheers D