jenkins_on_docker.md

Jenkins on docker

docker pull jenkins

docker run -p 8080:8080 -p 50000:50000 jenkins

export port 8080 of host server(local machine), corresponds to 8080 port of jenkins running on docker. similary for port 50000

Usage - this will start jenkins server and you will be able to access it using localhost:8080 Cons - once you kill/stop the container, all the jenkins data, plugins will also be deleted.

We want a persistent storage for jenkins home directory.

docker run --name MyJenkins1 -p 8080:8080 -p 50000:50000 -v /Users/home/jenkins_home:/var/jenkins_home jenkins

Login using admin password and create a job.

Usage - Get persistent storage for jenkins home directory. Will map jenkins dir to yours (on local machine). "jenkins_home" folder on the local host will be automatically created.

Visit Jenkins to learn more.

admin password in "/Users/home/jenkins_home/secrets"

docker rm MyJenkins1

docker run --name MyJenkins2 -p 9090:8080 -p 50000:50000 -v /Users/home/jenkins_home/:/var/jenkins_home jenkins

If you go to localhost:9090, you will see the previous created job as well.

Advantage - will be very handy when you want to share your data with multiple containers. (and we should always do this when we are working with enterprise projects.)

docker volume create jenkinstemp
docker volume ls

Usage - will create a volume.

docker volume inspect jenkinstemp

"Mountpoint": "/var/lib/docker/volumes/jenkinstemp/_data" (Mountpoint is where it is available)

Cons - although this volume is created on the host machine, you wont be able to change it.

NOTE - now instead of using a physical location, you can use this docker volume

docker run --name MyJenkins3 -p 9090:8080 -p 50000:50000 -v jenkinstemp:/var/jenkins_home jenkins

Becomes very easy when we want to share our data between multiple containers or persist data.

docker inspect MyJenkins3

you will find the location

        "Mounts": [
            {
                "Type": "volume",
                "Name": "jenkinstemp",
                "Source": "/var/lib/docker/volumes/jenkinstemp/_data",
                "Destination": "/var/jenkins_home",
                "Driver": "local",
                "Mode": "z",
                "RW": true,
                "Propagation": ""
            }