Notes of Docker

1. putting-jenkins-docker-container
2. container
3. recap-and-cheat-sheet-optiona
4. image
5. logging
6. Exploring Docker container's file system
7. Programmatically removes files/folder resides in docker container
8. understanding-volumes
9. assign a port mapping to an existing Docker container?(Create a new image based on current container)
10. restore-a-docker-volume-to-your-mac
11. getting-path-and-accessing-persistent-volumes-in-docker-for-mac
12. Docker for Mac Commands for Getting Into The Local Docker VM
13. How do I kill all screens
14. SCP file from Docker VM to localhost: scp -r file_to_be_moved username@remote_host:/path/to/destination/dir
15. Copying files from host to Docker container
16. Pushing and Pulling to and from Docker Hub (Backup Images)
17. Login container as root

Bind Mount

docker run --name container_name -p 80:8080 -p 50000:50000 -v /Users/your_username/Documents/jenkins_home:/var/jenkins_home -e "TZ=Asia/Taipei" jenkins/jenkins:lts

reference

Create Volume (Preferred)

docker run --name container_name -p 80:8080 -p 50000:50000 -v jenkins_home:/var/jenkins_home -e "TZ=Asia/Taipei" jenkins/jenkins:lts

reference

Backup Volume

1. Backup the data volume from the data container named data-container-to-backup

cd path_of_where_you_want_to_put_the_archive

docker run --rm --volumes-from container_name --name tmp-backup -v $(pwd):/backup ubuntu tar cvf /backup/backup.tar /var/jenkins_home

2. Expand this tar file into a new container so we can commit it as part of its image

cd path_of_where_the_archive_at

docker run -d -v $(pwd):/backup --name data-backup ubuntu /bin/sh -c "cd / && tar xvf /backup/backup.tar && sudo chown -R $USER /backup/var/jenkins_home"

3. Commit and push (if necessary) the image with a desired tag ($VERSION)

Check previous step has completed, use docker ps or docker logs to inspect.

docker commit data-backup repo/data-backup:$VERSION
docker push repo/data-backup:$VERSION (optional)

4. Clean up

docker rm data-backup

5. Run the data container with the data-backup image

docker run -v /var/jenkins_home --entrypoint "bin/sh" --name data-container repo/data-backup:${VERSION}

6. Run image with volumes from the data-conainter

Remember the repo/version of image (jenkins) should be identical to the version that been used by the archive.

docker run --volumes-from=data-container --name container_name -p 80:8080 -p 50000:50000 jenkins/jenkins:2.135

reference

Run Jenkins container on https

Normal approach

keytool -genkey -keyalg RSA -alias selfsigned -keystore jenkins_keystore.jks -storepass {password} -keysize 2048
docker run -v {volume id}:/var/jenkins_home -p 443:8443 jenkins/jenkins:2.135 --httpPort=-1 --httpsPort=8443 --httpsKeyStore=/var/jenkins_home/jenkins_keystore.jks --httpsKeyStorePassword={password}

reference

Jenkins migration (from http to https)

1. Find out the volume_name.

docker inspect shdr_jenkins

2. Shut down http Jenkins container.

docker stop shdr_jenkins

3. Run a https Jenkins container with existed volume.

docker run --name container_name -p 443:8443 -p 50000:50000 -v {volume_name}:/var/jenkins_home -e "TZ=Asia/Taipei" jenkins/jenkins:2.135 --httpPort=-1 --httpsPort=8443