Jenkins : Install

	Install CD (Continuous Delivery) System, Jenkins.
[1]	Install OpenJDK 11, refer to here.
[2]	Install and start Jenkins.

# get Jenkins official repository [root@dlp ~]#  curl https://pkg.jenkins.io/redhat-stable/jenkins.repo > /etc/yum.repos.d/jenkins.repo # get GPG key and install Jenkins [root@dlp ~]#  rpm --import https://pkg.jenkins.io/redhat-stable/jenkins.io.key [root@dlp ~]#  dnf -y install jenkins [root@dlp ~]#  vi /etc/sysconfig/jenkins # line 67 : add IP address Jenkins listens # * listen all with [0.0.0.0] JENKINS_LISTEN_ADDRESS=" 10.0.0.30 " [root@dlp ~]#  systemctl enable --now jenkins

[3]	If Firewalld is running, allow service ports.

[root@dlp ~]#  firewall-cmd --add-port=8080/tcp success [root@dlp ~]#  firewall-cmd --runtime-to-permanent success

[4]

Access to [https://(server's hostname or IP address):8080/] with Web browser from localhost or any Client Host, then, initial admin password is required to enter initial setup. Make sure initial admin password that is saved in [/var/lib/jenkins/secrets/initialAdminPassword] and input it to enter setup.

[5]	This is the Jenkins initial setup. Select to install suggested plugins or to install from your own selected plugins. (proceed with [suggested plugins] on this example)

[6]	The initial setup tasks run.

[7]	Setting administrative user and password is required. Set any username and password you like.

[8]	If you'd like to change Jenkins URL, change it on here. (proceed with default on this example)

[9]	Initial setup finished. Click [Start using Jenkins] button to move Jenkins index page.

[10]	This is the Jenkins index page.

[11]	For next access to Jenkins, Login form is shown like follows, it's possible to authenticate with users you added in Jenkins.