Ubuntu - 재부팅시 Docker를 이용한 Jenkins 자동으로 ON

Docker 컨테이너 확인 후 제거

$ sudo docker ps
CONTAINER ID        IMAGE                 COMMAND                  CREATED             STATUS              PORTS                                              NAMES
4bb24e16a109        jenkinsci/blueocean   "/sbin/tini -- /usr/…"   6 seconds ago       Up 5 seconds        0.0.0.0:50000->50000/tcp, 0.0.0.0:8080->8080/tcp   jenkins-blueocean
b9754d7f715e        docker:dind           "dockerd-entrypoint.…"   2 minutes ago       Up 2 minutes        2375/tcp, 0.0.0.0:2376->2376/tcp                   jenkins-docker

$ sudo docker stop jenkins-blueocean
$ sudo docker stop jenkins-docker

$ sudo docker rm jenkins-blueocean
$ sudo docker rm jenkins-docker

// 안 될경우 강제 삭제
$ sudo docker rm -f jenkins-blueocean
$ sudo docker rm -f jenkins-docker

Docker 컨테이너 다시 띄우기

 다시 띄우는 이유 : --rm 옵션을 사용했었는데, 그렇게 되면 재부팅시 컨테이너 정보를 상실하여 Systemctl로 등록을 해도 정상 동작을 하지 않기 때문에 해당 옵션 제외하여 띄움

$ sudo docker container run \
  --name jenkins-docker \
  --detach \
  --privileged \
  --network jenkins \
  --network-alias docker \
  --env DOCKER_TLS_CERTDIR=/certs \
  --volume jenkins-docker-certs:/certs/client \
  --volume jenkins-data:/var/jenkins_home \
  --publish 2376:2376 \
  --restart=always \
  docker:dind
$ sudo docker container run \
  --name jenkins-blueocean \
  --detach \
  --network jenkins \
  --env DOCKER_HOST=tcp://docker:2376 \
  --env DOCKER_CERT_PATH=/certs/client \
  --env DOCKER_TLS_VERIFY=1 \
  --publish 8080:8080 \
  --publish 50000:50000 \
  --volume jenkins-data:/var/jenkins_home \
  --volume jenkins-docker-certs:/certs/client:ro \
  jenkinsci/blueocean

jenkins-blueocean.service 생성

$ sudo vi /etc/systemd/system/jenkins-blueocean.service 

[Unit]
Description=docker jenkins-blueocean Service
After=docker.service
Requires=docker.service

[Service]
Restart=always
ExecStart=/usr/bin/docker start -a jenkins-blueocean
ExecStop=/usr/bin/docker stop -t 2 jenkins-blueocean

[Install]
WantedBy=multi-user.target

jenkins-docker.service 생성

$ sudo vi /etc/systemd/system/jenkins-docker.service
[Unit]
Description=docker jenkins-docker Service
After=docker.service
Requires=docker.service

[Service]
Restart=always
ExecStart=/usr/bin/docker start -a jenkins-docker
ExecStop=/usr/bin/docker stop -t 2 jenkins-docker

[Install]
WantedBy=multi-user.target

 

jenkins 컨테이너들 데몬 등록

데몬 : 쉽게 이해하자면 서버 시작시 실행되는 프로그램

$ sudo systemctl enable jenkins-blueocean.service
Created symlink /etc/systemd/system/multi-user.target.wants/jenkins-blueocean.service → /etc/systemd/system/jenkins-blueocean.service.
$ sudo systemctl enable jenkins-docker.service
Created symlink /etc/systemd/system/multi-user.target.wants/jenkins-docker.service → /etc/systemd/system/jenkins-docker.service.

서버 재부팅 - 확인 완료

$ sudo docker ps
CONTAINER ID        IMAGE                 COMMAND                  CREATED             STATUS              PORTS                                              NAMES
bc433d480fa7        jenkinsci/blueocean   "/sbin/tini -- /usr/…"   18 minutes ago      Up 4 seconds        0.0.0.0:50000->50000/tcp, 0.0.0.0:8888->8080/tcp   jenkins-blueocean
9fee1c2f7b77        docker:dind           "dockerd-entrypoint.…"   18 minutes ago      Up 5 seconds        2375/tcp, 0.0.0.0:2376->2376/tcp                   jenkins-docker