Preparing the Jenkins Environment

Environment Description

If the Jenkins environment has been installed, skip this section.

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

• VM: CentOS 7.9
• Jenkins: 2.331
• Git: installed using yum
• JDK: 11.0.8
• Apache Maven: 3.8.6

Note:

-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 Jenkins:

  https://mirrors.jenkins.io/war-stable/

• Install Git to pull code for building:

  yum install git –y

• Download the JDK installation package:

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

• Download the Maven installation package:

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

• Install Docker to pack the image and upload it to the image repository:

  yum install docker

Verifying the Installation

• Git
  • 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

  Figure 1 Version check