Set up Jenkins environment and automatically associate packaged project jars for automatic release

This article focuses on how to use Docker Building a jenkins Environmental Science , And how to use this jenkins Build automatically 、 Automatic release and other pipeline operations .

One .Docker Build... In the environment jenkins

We open the front hair Docker Environment interface , The overall procedure is ： Pull jenkins Mirror image --> Set the image mount directory and authorization --> Mount directory mapping 、 Turn on port mapping 、docker function jenkins Mirror image --> see jenkins Image operation --> see jenkins Run log -->windows Virtual machine configuration port mapping --> Browser access jenkins Console .

（1） Pull jenkins Mirror image ：

stay docker in , It mainly loads images one by one （ It can be understood as a service out of the box file ） Run , Before running these images , You need to pull these images from the image warehouse first , The running image is displayed in docker The container exists independently , Different docker Containers do not interfere with each other .

docker pull jenkins/jenkins

You can see docker It will automatically pull the latest version for us jenkins Mirror image , Of course, you can set the pull version by yourself

docker images

View the pulled image

The next step is to set jenkins The mount directory for , We use /usr/local/jenkins Directory as Mount Directory , And set permissions

mkdir -p /usr/local/jenkins

chmod 777  /usr/local/jenkins

The next step is to mount the directory mapping 、 Turn on port mapping 、docker function jenkins Mirror image

docker run -d -p 8080:8080 -v /usr/local/jenkins:/var/jenkins_home -v /etc/localtime:/etc/localtime --restart=always -u root --name my_jenkins  jenkins/jenkins

The above command is used directly docker Run the jenkins The mirror , Need to focus on ：

（1）-p  8080:8080, It is important to note that jenkins Internal default use 8080 Port to start , That is to say, we need to enable the host and by default docker In container 8080 Mapping between ports , Let the host and this docker Container of 8080 Ports can access each other .

（2）-v /usr/local/jenkins:/var/jenkins_home, What needs to be noticed is this docker Inside the container jenkins An image is actually a file system , We can use the command to enter docker Inside the mirror

docker ps -a

docker exec -it <Container ID> /bin/bash

It can be found that we can pass cd Get to this jenkins Of /var/jenkins_home In the catalog , That is to say, each docker Inside the container is an independent linux environmental system , After entering, you can go through exit sign out docker Inside of container .

therefore , above -v /usr/local/jenkins:/var/jenkins_home Will be docker Mount directory of the external host , And docker The actual inside of the container jenkins Directory to mount and bind , So that we can directly reference to... By accessing the mount directory of the host docker Inside the container jenkins.

（3）-u root  --name my_jenkins  jenkins/jenkins, We need to use the administrator account root To operate , Then reprint this to docker Take a name for the internal image my_jenkins It is convenient to distinguish multiple identical published images .

Run the command completely through the above , You can go to docker Run a... In the container jenkins Mirror instance .

docker ps -al

CONTAINER ID  IMAGE   COMMAND   CREATED   STATUS   PORTS   NAMES
3342f36002f3     jenkins/jenkins   "/usr/bin/tini -- /us"   21 hours ag Up 22 hours          0.0.0.0:8080->8080/tcp, 50000/tcp   my_jenkins

You can see jenkins Instance started , Port binding is also performed .

docker logs my_jenkins

View the running log of the image , We can see the operation , At the same time, remember that there will be a password after successful operation （ Red box ）, This password is used to log in for the first time jenkins The password for the console . 

however , We visit... In a computer browser localhost:8080 But you will find that you can't open jenkins Console , That's because although Docker Environmental Science --Docker The internal port mapping has been associated , But our computer mainframe VirtualBox and Docker The port mapping of the environment is not open , That is to say, you can use a computer browser to access 8080 In fact, you can't reach the virtual machine 8080 Of , So we need to be in VirtualBox Port configuration in （ Of course for linux Physical machines do not need this layer of operation ）.

open VirtualBox-- Set up -- grid -- The connection mode can be NAT-- senior -- Port forwarding --

With the specified port mapping  

In this way, you can access... Through the browser localhost:8080 open jenkins Console. , The first time I landed , Password in

  Output the password marked in the red box in the above startup log , You can log in , Install the wait using the recommended configuration , Then create a new user .

The following can be found in jenkins Create a publishing pipeline on .