Springboot (16): Deploy Spring Boot with Jenkins

Jenkins is a devops artifact, and this article describes how to install and use Jenkins to deploy the Spring boot project

Jenkins build deployment is divided into three steps;

• First step, Jenkins installation
  
• Step two, plug-in installation and configuration
  
• Step three, Push SSH
• Fourth step, deploy the project

First step, Jenkins installation

Preparation environment:

jdk:1.8
jenkins:2.83
centos:7.3
Maven 3.5 '

JDK is already installed by default

Configure Maven

Version Requirements maven3.5.0

Software download

wget http://mirror.bit.edu.cn/apache/maven/maven-3/3.5.0/binaries/apache-maven-3.5.0-bin.tar.gz

Installation

## 解压tar vxf apache-maven-3.5.0-bin.tar.gz## 移动mv apache-maven-3.5.0 /usr/local/maven3

Modify environment variables,
Add the following lines in the/etc/profile

MAVEN_HOME=/usr/local/maven3exportMAVEN_HOMEexportPATH=${PATH}:${MAVEN_HOME}/bin

Remember to perform source /etc/profile the environment variables in effect.

Verify
Last run mvn -v Verify that MAVEN is installed successfully

Configuring the Shield Wall

Close the fence.

#centos7systemctl stop firewalld.service==============================#以下为：centOS 6.5关闭防火墙步骤#关闭命令：  service#永久关闭防火墙：chkconfig iptables off

Two commands run at the same time, check the firewall shutdown state after the run is complete

service iptables status

Jenkins installation

Download

cd /optwget http://mirrors.jenkins.io/war/2.83/jenkins.war

Start the service

java&

Jenkins is on the start! It's war pack comes with Jetty server

When you start Jenkins for the first time, for security reasons, Jenkins automatically generates a random follow-up password. Note The password for the console output, copy it down , and then enter the passwords in the browser:

info : ********  **********************************  ************************************************************ *  jenkins  initial setup is required. A Admin user has been created and a password generated. please  use the following password-proceed to Installation: this  may also being found at:/root/.jenkins/secrets/ Initialadminpassword*************************************************************  *************************************************************  ************** ***********************************************

Access
Browser access:http://localhost:8080/

Input: 0cca37389e6540c08ce6e4c96f46da0f

To enter the user-defined plugin interface, it is recommended to install the official recommended plug-in, because after installation you have to install:

The next step is to enter the plugin installation Progress screen:

The plugin may not be fully installed at once, and you can click Retry to install again. Until all installation is successful

After waiting for some time, the plug-in installation is complete, configure the user name password:

Input: Admin/admin

System Management-the global tool configures the JDK path,

Step two, plug-in installation and configuration

There are many plugins that are selected by default for the installation, so now we need to install a few plugins, Git plugin and maven integration plugin,publish over SSH, CVS plugin to manage SSH.

Plug-in Installation: System Management > Plug-in Management > optional plug-ins, check the plugins you need to install, click Install directly or download reboot to install

Configuring global Variables

System Administration > Global Tools Configuration

Jdk

Configure the path of the local JDK, remove the check box to install automatically

Maven

Configure the path of the local maven, remove the check box to install automatically

Other content can be installed according to their own circumstances.

Configure SSH Free Login

SSH configuration can use the key, you can also use the password, here we use the key to configure, before the configuration of the Jenkins server and application Server key authentication
Generate a key pair on the Jenkins server , using the ssh-keygen -t rsa command

Enter the following command to continue to enter, a rectangular graphic appears to indicate success, under ~/.ssh/will have the private key id_rsa and the public key id_rsa.pub

ssh-keygen -t rsa

Copy the contents of the Jenkins server 's public key id_rsa.pub to the file under the ~/.ssh/of the application server authorized_keys

ssh-copy-id -i id_rsa.pub 192.168.0.xxchmod 644 authorized_keys

Restart the SSH service on the application Server , service sshd restart now the Jenkins server can login directly to the application server without password

After the use of SSH B to try to be able to password-free login b server, if you are prompted to enter a passphrase, for the following reasons

• A. A non-root account may not support SSH public key authentication (see if the server is limited)
  
• B. The public key file passed over the permission is insufficient, can give this file authorization under chmod 644 Authorized_keys
  
• C. Use the root account to execute ssh-copy-id-i ~/.ssh/id_rsa.pub This command if you need to enter a password to configure the Sshd_config

vi /etc/ssh/sshd_config#内容PermitRootLogin no

Restart the SSHD service when you are finished modifying

service sshd restart

Finally, if SSH IP password-free login succeeds, the SSH public key authentication succeeds.

Step three, Push SSH

System Management > System Setup

Select Publish over SSH

Passphrase not set
Path to key writes the generated SSH path:/root/.ssh/id_rsa

The following SSH servers is the focus

Name is called at random to represent the service, and will be chosen by it later
Hostname Configuring the address of the application server
Username Configuring the Linux login user name
Remote Directory does not fill

Click below to add multiple application server addresses

Fourth step, deploy the project

Home Click New : Enter project name

Select Build a MAVEN project below and click OK.

Tick discard old build and choose whether to back up the old package that was replaced. I choose here to back up the last 10

Source control, choose SVN, configure SVN-related information, click Add to enter SVN's account and password

SVN address: http://192.168.0.xx/svn/[email protected], @HEAD meaning to take the latest version

"Add timestamps to the Console Output" is checked in the build environment, and the log is printed during code building

In build, enter the MVN command before packaging, such as:

clean install -Dmaven.test.skip=true -Ptest

Exclude the package contents of the test, using a configuration file with the suffix test.

Post Steps Select Run only if build succeeds

Click Add post-build step, select Send files or execute commands over SSH

Name Select the above configured push SSH

Source Files Configuration: Target/xxx-0.0.1-snapshot.jar Project JAR Package Name
Remove prefix:target/
The directory address of the Remote directory:jenkins-in/code application Server,
Exec command:jenkins-in/xxx.sh The corresponding script for the application server.

To create a folder on the application server: jenkins-in, copy the script contents in the folder: xxx.sh

date=$ (Date+%y%m%d)Export Java_home PATH CLASSPATHjava_home=/usr/java/jdk1.8.0_131path= $JAVA _home/bin:$JAVA _home/jre/bin:$PATHclasspath=.:$JAVA _home/lib:$JAVA _home/jre/lib:$CLASSPATHdir=/root/xxxjarfile=Xxx-0.0.1-snapshot.jarif [ ! - D $DIR/backup ]; Then   mkdir-P$DIR/backupfiCD $DIRPS-ef| grep $JARFILE | grep-V grep| awk ' {print $} ' | XargsKill-9MV $JARFILEbackup/$JARFILE in theMV-f/root/jenkins-in/$JARFILE.Java-jar$JARFILE >Out.log&if [ $? =0 ]; Then        Sleep30Tail-N-Out.logfiCDbackup/ls-lt|awk ' Nr>5{print $NF} '|xargsRm-rf

The meaning of this script is to kill the old project, delete the old project, start a new project, and back up the old project.

Complete the full text.

Springboot (16): Deploy Spring Boot with Jenkins