Shulou(Shulou.com)06/03 Report--

This article mainly introduces in detail the method of kubernetes installation and configuration of Jenkins service, the picture and text explanation is easy to learn, very suitable for beginners, interested friends can refer to.

1. Install Jenkins

# prepare Java environment tar xvf jdk-8u231-linux-x64.tar.gz-C / usr/local/cd / usr/local/ln-s jdk1.8.0_231 javacat / etc/profile.d/javaexport JAVA_HOME=/usr/local/javaexport PATH=$PATH:$JAVA_HOME/binsource / etc/profile.d/javajava-version

Yum-y install wgetwget-O / etc/yum.repos.d/jenkins.repo http://pkg.jenkins-ci.org/redhat/jenkins.reporpm-- import https://jenkins-ci.org/redhat/jenkins-ci.org.keyyum-- showduplicates list jenkins | expand # View the version to be installed yum-y install jenkins # install the latest vim / etc/sysconfig/jenkins # by default, modify the Jenkins configuration file as needed

Start

Systemctl start jenkins

Ss-anutlp | grep 8080 # to see if it has been started

2. Web interface settings

View the administrator password:

Cat / var/lib/jenkins/secrets/initialAdminPassword

Choose the recommended plug-in here and choose it according to your own needs.

It takes a long time to install. If any installation fails, click reinstall.

Create your administrator account, here I am logged in with the admin account, if the password is the same as the password to start cat.

Re-set the password for the admin user.

3. Install the plug-in

Plug-ins that need to be downloaded are: docker-build-step,docker,Maven Integration

4. Configure the environment

4.1 install git

Yum-y install git

4.2 install maven

Wget http://mirrors.tuna.tsinghua.edu.cn/apache/maven/maven-3/3.6.3/binaries/apache-maven-3.6.3-bin.tar.gztar xvf apache-maven-3.6.3-bin.tar.gz-C / usr/localln-s apache-maven-3.6.3 mavencat / etc/profile.d/mavenexport MAVEN_HOME=/usr/local/mavenexport PATH=$MAVEN_HOME/bin:$PATHsource / etc/profile.d/mavenmvn-- version

4.3 install docker

Yum install-y yum-utils device-mapper-persistent-data lvm2yum-config-manager-- add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repoyum makecache fastyum install-y docker-ce-18.06.1.ce-3.el7systemctl start dockersystemctl status docker

4.4 Note: here I am using the company's private server. I need to configure the setting file, and my setting file is placed under / opt/.

5. Configure the global environment

5.1 configure docker

Pull to the bottom and choose to create a cloud, set the name, and url.

5.2 configure maven,jdk,git

Save after configuration!

6. Configure the project

Choose to build the maven project

Select git

Here you need to create a remote clone code user who must exist in your gitlab code user group and have permission to clone code

Then select the user you just created. The production environment is not configured for automatic construction, but needs to be self-configured.

Dckerfile file

FROM registry.hello.com/jdk:1.8_232 # this is my own jdk image ADD. / target/app.jar app.jarCMD ["java-jar app.jar-XX:+UnlockExperimentalVMOptions-XX:+UseCGroupMemoryLimitForHeap"]

# complete commands, modify according to your environment, and make examples. For more information, please see ssh root@192.16.6.89 "kubectl set image deployment/hello hello=registry.cn-hangzhou.aliyuncs.com/helloworld/hello:$ {BUILD_NUMBER}-n master" of the kebectl set image command.

Description: here is the Jenkins user to execute the command, will report an error Host key verification failed, you need to use the Jenkins user to create a key

Solution:

After installing jenkins, the system generates the ordinary user jenkins, but in / etc/passwd, his shell is / bin/false, so he cannot log in to the system and does not have a home directory. First, we modify his login permissions to change / bin/false to / bin/bash, and switch to the jenkins user, su.

-jenkins, whose terminal is displayed as-bash-4.2 $

Jenkins:x:997:995:Jenkins Automation Server:/var/lib/jenkins:/bin/bash

Generate jenkins user key pair

[root@bogon .ssh] # su-jenkins-bash-4.2$ ssh-keygen-t rsa enter-bash-4.2$ ssh-copy-id-I / var/lib/jenkins/.ssh/id_rsa.pub root@192.168.75.12

Use sudo to enhance the privileges of ordinary users

Use viduso to modify files, use commas between commands, and finally use visudo-c to check syntax errors.

Visudoroot ALL= (ALL) ALL # added to the original jenkins ALL= (ALL) NOPASSWD:/usr/bin/ssh,/usr/bin/rsync #

Finally, you can use the command command in jenkins to execute.

After the construction is successful

So far, the kubernetes installation and configuration of the Jenkins service has been successful. If you want to learn more skills or want to know more about it, you are welcome to follow the industry information channel.

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