Table of contents
- You have to install docker and Jenkins in your system from your terminal using package managers
- Step - 1 (Install Java)
- check the status of docker service in your system (make sure you completed above tasks, else docker won't be installed)
- stop the service jenkins and post before and after screenshots
- sudo systemctl stop jenkins
- sudo systemctl status jenkins
- OUTPUT:
- read about the commands systemctl vs service
- systemctl:
- Start and Stop Service
- Restart or Reload Service
- Status of Service
- Enable or Disable Service
- Check Service is Enabled or Disabled
- service:
- 1. To status of a program:
- service docker status
- 2. To start a service:
- service docker start
- 3. To stop a service:
- service docker stop
- 4. To restart a service:
- service docker restart
- 5. To see the status for all the programs:
- service --status-all
- 6.To see the help:
- service -h
- service --help
- 7.To see the version:
- service --version
- ~~~~~~End***
You have to install docker and Jenkins in your system from your terminal using package managers
INSTALL DOCKER:
- Open the terminal on Ubuntu.
Remove any Docker files that are running in the system, using the following command
$ sudo apt-get remove docker docker-engine docker.ioCheck if the system is up-to-date using the following command
$ sudo apt-get updateInstall Docker using the following command
$ sudo apt install docker.ioInstall all the dependency packages using the following command
$ sudo snap install dockerBefore testing Docker, check the version installed using the following command
$ docker --versionPull an image from the Docker hub using the following command
$ sudo docker run hello-worldHere, hello-world is the docker image present on the Docker hub.
Check if the docker image has been pulled and is present in your system using the following command
$ sudo docker imagesTo display all the containers pulled, use the following command
$ sudo docker ps -aTo check for containers in a running state, use the following command
$ sudo docker psINSTALL JENKINS
Step - 1 (Install Java)
- Update your system
sudo apt update
2.Install java
sudo apt install open-jdk-11-jre
3.Validate Installation
java -version
STEP-2 INSTALL JENKINS
4.Just copy these commands and paste them onto your terminal.
curl -fsSL https://pkg.jenkins.io/debian/jenkins.io.key | sudo tee \ /usr/share/keyrings/jenkins-keyring.asc > /dev/null
echo deb [signed-by=/usr/share/keyrings/jenkins-keyring.asc] \ https://pkg.jenkins.io/debian binary/ | sudo tee \ /etc/apt/sources.list.d/jenkins.list > /dev/null
sudo apt-get update
sudo apt-get install jenkins
Step -3 Start jenkins
sudo systemctl enable jenkins
sudo systemctl start jenkins
sudo systemctl status jenkins
check the status of docker service in your system (make sure you completed above tasks, else docker won't be installed)
systemctl status docker
OUTPUT:
docker.service - Docker Application Container Engine Loaded: loaded (/lib/systemd/system/docker.service; enabled; vendor preset: enabled) Active: active (running) since Sat 2023-01-07 15:22:45 UTC; 44min ago TriggeredBy: ● docker.socket Docs: docs.docker.com Main PID: 7258 (dockerd) Tasks: 7 Memory: 33.1M CPU: 539ms CGroup: /system.slice/docker.service └─7258 /usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock
stop the service jenkins and post before and after screenshots
sudo systemctl stop jenkins
sudo systemctl status jenkins
OUTPUT:
○ jenkins.service - Jenkins Continuous Integration Server Loaded: loaded (/lib/systemd/system/jenkins.service; enabled; vendor preset: enabled) Active: inactive (dead) since Sat 2023-01-07 16:14:48 UTC; 1min 27s ago Process: 5310 ExecStart=/usr/bin/jenkins (code=exited, status=143) Main PID: 5310 (code=exited, status=143) Status: "Jenkins stopped" CPU: 49.021s
Jan 07 15:17:03 ip-172-31-86-78 jenkins[5310]: ************************************************************* Jan 07 15:17:37 ip-172-31-86-78 jenkins[5310]: 2023-01-07 15:17:37.745+0000 [id=29] INFO jenkins.InitReactorRunner$1#onAttained: Co> Jan 07 15:17:37 ip-172-31-86-78 jenkins[5310]: 2023-01-07 15:17:37.786+0000 [id=22] INFO hudson.lifecycle.Lifecycle#onReady: Jenkin> Jan 07 15:17:37 ip-172-31-86-78 systemd[1]: Started Jenkins Continuous Integration Server. Jan 07 15:17:37 ip-172-31-86-78 jenkins[5310]: 2023-01-07 15:17:37.935+0000 [id=44] INFO h.m.DownloadService$Downloadable#load: Obt> Jan 07 15:17:37 ip-172-31-86-78 jenkins[5310]: 2023-01-07 15:17:37.936+0000 [id=44] INFO hudson.util.Retrier#start: Performed the a> Jan 07 16:14:48 ip-172-31-86-78 systemd[1]: Stopping Jenkins Continuous Integration Server... Jan 07 16:14:48 ip-172-31-86-78 systemd[1]: jenkins.service: Deactivated successfully. Jan 07 16:14:48 ip-172-31-86-78 systemd[1]: Stopped Jenkins Continuous Integration Server. Jan 07 16:14:48 ip-172-31-86-78 systemd[1]: jenkins.service: Consumed 49.021s CPU time.
read about the commands systemctl vs service
systemctl:
The systemctl command manages both system and service configuration.
Start and Stop Service
sudo systemctl start docker.service
sudo systemctl stop docker.service
Start: To start stopped service
Restart: To stop running the service
Restart or Reload Service
sudo systemctl reload docker.service
sudo systemctl restart docker.service
Reload: Used to reload the configuration of a running service
Restart: Used to restart (Stop/Start) a running service
Status of Service
sudo systemctl status docker.service
Status: Used to check current status of a service
Enable or Disable Service
sudo systemctl enable docker.service
sudo systemctl disable docker.service
Enable: Used to enable service to start on system boot
Disable: Used to disable service to not to start on system boot
Check Service is Enabled or Disabled
sudo systemctl is-active docker.service
sudo systemctl is-enabled docker.service
is-active: Used to check if service current service status
is-enabled: Used to check if service is enabled to start on system boot
service:
The service command starts,stop and restart a daemon.