Shulou(Shulou.com)06/02 Report--

Editor to share with you how idea integrates docker rapid deployment of springboot applications, I believe most people do not know much about it, so share this article for your reference, I hope you can learn a lot after reading this article, let's learn about it!

I. Preface

The word containerization is no stranger to us. When we hear it, we may think of docker, K8s, jenkins, rancher and so on. So today I'm going to talk about how idea uses docker to quickly deploy springboot applications.

II. Environment and tools

Windows10 (Development)

Centos 7.6 (deployment)

Idea

Docker

Xshell

Install docker and configure remote connection

There are many steps to install docker online, so let's say it again here:

Update the wave first.

Sudo yum update

Install the latest docker

Yum install docker-y

Start docker

Systemctl start docker

You can use docker images to view the image status. The following figure indicates that the startup is successful (currently there is no image in it)

If it is shown in the following figure, it means that the startup failed

Open docker remote connection

Edit the docker.service file

Vim / lib/systemd/system/docker.service

When opened, the content is as follows:

On the green cursor line, add the following:

# centos7 and above ExecStart=/usr/bin/dockerd-H tcp://0.0.0.0:2375-H unix://var/run/docker.sock# centos7 below ExecStart=/usr/bin/dockerd-H fd://-H tcp://0.0.0.0:2375

Here I use other ports, such as 12377. After the modification, the content is shown in the following figure:

After saving, reload the configuration file and restart docker:

Systemctl daemon-reload systemctl restart docker

To check if port 12377 is listening, execute lsof-iRanger 12377

If you are using a CVM, you need to enable the 12377 firewall rule. If you use the default port 2375, it doesn't matter if you use a virtual machine or private network. If you are exposed to the public network, you will probably find that your cpu is full the next day and a large number of horse and mining programs are installed. Students who have time can further configure the security configuration. You can search here by yourself.

4. Idea connects to remote docker

Install the plug-in docker

Configure connection

After installation, find the following location in setting

Configure your docker address in TCP socket in the following format:

Tcp://ip:12377, after filling in, wait a little while, the connection test will be carried out below. After the connection is successful, it will be shown in the figure above. 5. Springboot project configuration docker pom configuration

The current project packaging method of the blogger is jar package, and the properties configuration in pom is as follows

Springboot

The configuration in build is as follows:

Docker-demo org.springframework.boot spring-boot-maven-plugin ${spring-boot.version} com.spotify docker-maven-plugin 1.0.0 Http://ip:12377 ${docker.image.prefix} / ${project.artifactId} src/main/docker / ${project.build.directory} ${project.build.finalName} .jar

Resources is to find the typed jar,dockerDirectory. To find the Dockerfile,imageName configured in the project is the image name.

Create Dockerfile (note that Dockerfile is not named for hump)

The structure is shown in the following figure

Contents of Dockerfile file:

The FROM williamyeh/java8 # source can use docker search java8 to search for the first source VOLUME / tmpADD docker-demo.jar / app/docker-demo.jar#COPY target/demo-0.0.1-SNAPSHOT.jar app.jarENTRYPOINT ["java", "- jar", "/ app/docker-demo.jar"]

FROM: specify the basic image, which must be the first command

VOLUME: used to specify the persistence directory

ADD: add local files to the container, tar type files will be automatically extracted (network compressed resources will not be decompressed), can access network resources, similar to wget

ENTRYPOINT: configure the container to make it executable

The rest of the instructions can be searched by themselves.

At this point, the required configuration is complete, and then start running

Find the maven window on the right side of idea and execute clean

Execute package to package after clean is finished.

Then execute the docker:build shown in the figure

In this process, a docker folder is created under the target directory, and the Dockerfile file and the generated jar package are copied, then the basic image is pulled according to the configuration in Dockerfile, and the jar is transferred to the specified location on the server, and then the image is created. Click Services at the bottom of idea after BUILD SUCCESS

The window is as follows

Double-click Docker to connect. After the connection is successful, we can see the health status of the image and container:

Then you can right-click the springboot/**:latest image to create the container

Pop up the create option to create a configuration

Configure the container name and run options inside, and finally click run to run the container. We can see the container's running log in the Services window:

These are all the contents of the article "how idea integrates docker to rapidly deploy springboot applications". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.