Preparing the Jenkins Environment

Environment Description

Install Jenkins on a Linux VM. The following lists the environment information used in this practice. If you use an image package for deployment, install Docker on the VM.

• VM: CentOS 7.9
• Jenkins: 2.319.3
• Git: installed using yum
• JDK: 11.0.8
• Apache Maven: 3.8.6

The following parameter needs to be added to start Jenkins:

-Dhudson.security.csrf.GlobalCrumbIssuerConfiguration.DISABLE_CSRF_PROTECTION=true

Otherwise, GitLab fails to interconnect with Jenkins. The error is as follows:

HTTP Status 403 - No valid crumb was included in the request

Downloading and Installing Related Software

• Download and install Jenkins.

  Download: https://mirrors.jenkins.io/war-stable/. Install: https://www.jenkins.io/doc/book/installing/.

• Install Git to pull code for building commands.

  yum install git –y

• Download JDK.

  https://www.oracle.com/java/technologies/downloads/#java11

• Download Maven.

  https://maven.apache.org/download.cgi

• Install Docker to pack the image package and upload it to the image repository.

  yum install docker

Verifying the Installation

• Git

  [root@ecs-jenkins ~]# git version
  git version 1.8.3.1

• JDK

  [root@ecs-jenkins jar]# java -version
  openjdk version "1.8.0_345"
  OpenJDK Runtime Environment (build 1.8.0_345-b01)
  OpenJDK 64-Bit Server VM (build 25.345-b01, mixed mode)

• Maven

  [root@ecs-jenkins jar]# mvn -v
  Apache Maven 3.8.6 (84538c9988a25aec085021c365c560670ad80f63)
  Maven home: /root/app/maven/apache-maven-3.8.6
  Java version: 11.0.8, vendor: Huawei Technologies Co., LTD, runtime: /root/app/jdk11/jdk-11.0.8
  Default locale: en_US, platform encoding: UTF-8
  OS name: "linux", version: "3.10.0-1160.76.1.el7.x86_64", arch: "amd64", family: "unix"

• Docker

  [root@ecs-jenkins jar]# docker version
  Client:
   Version:         1.13.1
   API version:     1.26
   Package version: docker-1.13.1-209.git7d71120.el7.centos.x86_64
   Go version:      go1.10.3
   Git commit:      7d71120/1.13.1
   Built:           Wed Mar  2 15:25:43 2022
   OS/Arch:         linux/amd64
  Server:
   Version:         1.13.1
   API version:     1.26 (minimum version 1.12)
   Package version: docker-1.13.1-209.git7d71120.el7.centos.x86_64
   Go version:      go1.10.3
   Git commit:      7d71120/1.13.1
   Built:           Wed Mar  2 15:25:43 2022
   OS/Arch:         linux/amd64
   Experimental:    false