Jenkins Automated Deployment

1. Basic environment construction

Reference resources ：https://llinp.cn/articles/2022/01/01/1640998831081.html

1.1 Virtual machine environment construction

1.2 install jdk Running environment

# Enter into src Under the table of contents 
cd /usr/local/src/

# establish java File directory 
mkdir java

# Will download okay jdk The compressed package is stored in java Directory , And use the decompression command to decompress 
tar -zxvf jdk-8u212-linux-x64.tar.gz


# Modify environment variables 
vim /etc/profile
 
#set java env                
JAVA_HOME=/usr/local/src/java/jdk1.8.0_212
JAVA_BIN=/usr/local/src/java/jdk1.8.0_212/bin
PATH=$JAVA_HOME/bin:$PATH
CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
export JAVA_HOME JAVA_BIN PATH CLASSPATH

# Through the command source /etc/profile Give Way profile The document takes effect immediately 
source /etc/profile

# Test for successful installation 
java -version

The effect of the following figure shows jdk The environment has been configured

1.3 install maven

# First step ： Upload or download the installation package 
cd/usr/local
apache-maven-3.6.1-bin.tar.gz

# The second step ： Unzip the installation package 
tar -zxvf apache-maven-3.6.1-bin.tar.gz

# The third step ： Establish a soft connection 
ln -s /usr/local/apache-maven-3.6.1/ /usr/local/maven

# Step four ： Modify environment variables 
vim /etc/profile

export MAVEN_HOME=/usr/local/maven
export PATH=$PATH:$MAVEN_HOME/bin

# Through the command source /etc/profile Give Way profile The document takes effect immediately 
source /etc/profile

# Step five 、 Test for successful installation 
mvn –v

1.4 install git

yum -y install git

1.5 install docker

# verification docker Is it installed well ,  Command view docker Version of , In the virtual machine docker It's set up ,1.7.3 To 1.7.1 Do not execute the installation command in .
docker version

# Uninstall the old version of  docker  And its related dependencies 
sudo yum remove docker docker-common container-selinux docker-selinux docker-engine

# install  yum-utils**, It provides ** yum-config-manager**, Can be used to manage yum Source **
sudo yum install -y yum-utils

# add to yum Source 
sudo yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo

# Update index 
sudo yum makecache fast

# install  docker-ce
sudo yum install docker-ce

# see docker state 
systemctl status docker

# start-up  docker
systemctl start docker

#  start-up 
service docker start
#  stop it 
service docker stop
#  restart 
service docker restart 

# Verify that the installation was successful 
docker info

# Check the installed image 
docker images

# Look at the container 
# Show all containers 
docker ps -a 
# Show all running containers 
docker ps 

For detailed installation tutorials, see ：

https://llinp.cn/articles/2022/01/09/1641738726437.html#toc_h2_0

2. install jekins

download jenkins

Official address ：https://www.jenkins.io/download/

install

# First step ： Upload or download the installation package 
cd/usr/local/jenkins
jenkins.war

# The second step ： start-up 
#nohup- Background silent start  
#/usr/local/jenkins/jenkins.war war Package path 
#/usr/local/jenkins/jenkins.out  Log input path 
#nohup &  Background silent start 
nohup java -jar  /usr/local/jenkins/jenkins.war >/usr/local/jenkins/jenkins.out &

# The third step ： visit 
http://ip:8080

Effect after successful installation , At the beginning of the visit, there will be an initialization interface without waiting for operation , If you wait a long time and don't change kill -9 Process number , Restart it

Initialization interface

Password unlock

cat /root/.jenkins/secrets/initialAdminPassword

Be careful The default is foreign image , Download is very slow . It is recommended to close the browser and configure the domestic image

3. Configure domestic image

The official download of plug-ins is slow Update download address

cd { Yours Jenkins working directory }/updates # Enter the update configuration location

# Replace the image address with Zeng 
sed -i 's/http:\/\/updates.jenkins-ci.org\/download/https:\/\/mirrors.tuna.tsinghua.edu.cn\/jenkins/g' default.json && sed -i 's/http:\/\/www.google.com/https:\/\/www.baidu.com/g' default.json

This is the directly modified configuration file , If the front Jenkins use sudo Start up , So here are two sed You need to add sudo（linux If the login account is not a super administrator ）

3.1 stop it jenkins

# see jenkins process 
ps -ef|grep jenkins

# Kill the process , stop it jenkins
kill -9 37820

Enter into cd /root/.jenkins Directory

cd /root/.jenkins

Get into updates Catalog

cd updates/

Execute the statement to replace the image address with the domestic image address

sed -i 's/http:\/\/updates.jenkins-ci.org\/download/https:\/\/mirrors.tuna.tsinghua.edu.cn\/jenkins/g' default.json && sed -i 's/http:\/\/www.google.com/https:\/\/www.baidu.com/g' default.json

Look at the replaced default.json Content （cat、tail You can view the contents of the file ）

tail default.json
 or 
cat default.json 

restart jenkins

nohup java -jar  /usr/local/jenkins/jenkins.war >/usr/local/jenkins/jenkins.out &

4. Installing a plug-in

Choose to install the recommended plug-ins

Installing

Installation successful

Fill in normally

Configure access address

The default port here is 8080 Switch as needed

Go to this screen jenkins Installation of is complete

5.jenkins To configure

jenkins Configuration preparation for

1. download jdk

2. download maven

3. download git

4. download jenkins.war https://jenkins.io/index.html

Download address ：

link ：https://pan.baidu.com/s/1E-uQbZLVRGWkR_14xuPCLg
Extraction code ：35sv

Sign in

jenkins Management interface

Enter global configuration

5.1 To configure jdk

# see jdk The installation path 
which jdk

Here mine jdk The installation path is /usr/local/src/java/jdk1.8.0_212

5.2 To configure maven

5.3 To configure git

# see git The installation path 
which git

6.jenkins Automated Deployment

6.1 Modification item

modify pom file

Modify the packing method

 <packaging>jar</packaging>

Packaging plug-in

 <build>
        <finalName>demojenkins</finalName>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

6.2 stay jenkins Management interface creates automated tasks

establish item

Source management fill in the project git Address

Add user name and password

Constructing environment

Script files

#!/bin/bash
#maven pack 
mvn clean package
echo 'package ok!'
echo 'build start!'
cd ./
service_name="demojenkins"
service_prot=8761
# Look at the mirror image id  Judge demojenkins Is there a mirror image 
IID=$(docker images | grep "$service_name" | awk '{print $3}')
echo "IID $IID"
if [ -n "$IID" ]
then
	# Delete the image if it exists 
    echo "exist $SERVER_NAME image,IID=$IID"
    # delete mirror 
    docker rmi -f $service_name
    echo "delete $SERVER_NAME image"
    # Delete and rebuild 
    docker build -t $service_name .
    echo "build $SERVER_NAME image"
else
	# If it doesn't exist, build it directly 
    echo "no exist $SERVER_NAME image,build docker"
    # structure 
    docker build -t $service_name .
    echo "build $SERVER_NAME image"
fi
# Look at the container id, See which containers are running 
CID=$(docker ps | grep "$SERVER_NAME" | awk '{print $1}')
echo "CID $CID"
if [ -n "$CID" ]
then
	# Stop deleting if the same container exists 
    echo "exist $SERVER_NAME container,CID=$CID"
    # stop it 
    docker stop $service_name
    # Delete container 
    docker rm $service_name
else
    echo "no exist $SERVER_NAME container"
fi
# start-up , Create a container 
docker run -d --name $service_name --net=host -p $service_prot:$service_prot $service_name
# View startup log , Select whether to view 
#docker logs -f  $service_name

You need to start before building docker

Start the mission

View console output

So far, the project has been built

Final effect

6.3 Add

Build the structure

What I use here jenkins yes 2.319.2 The version image of has been changed , The representation of the icon can be seen from the explanation of

The first column is “ The last build status displays ”, It's a circular icon , There are generally four kinds of ：

Blue ： Building a successful ;

yellow ： Not sure , It is possible to build successfully , But it contains errors ;

Red ： Build failed ;

gray ： The project has never been built , Or it's disabled ;

Blue as shown above , Indicates that the build was successful .

Be careful ： The time of manually triggering the build and the time of automatically timing the build do not affect each other .