This step describes how to build a slave pod in Jenkins by creating a task and configuring task parameters.

Creating a Task

1. Log in to the Jenkins backend and click New Task or Create a Task.
2. On the "Create a Task" page, configure the basic information of the task.
   • Enter a task name: enter a custom name. This document uses test as an example.
   • Type: select Build a freestyle software project.
3. Click OK to go to the task parameter configuration page.
4. Configure the basic information on the task parameter configuration page.
   • Description: enter custom task information. This document uses slave pod test as an example.
   • Parameterize the building process: check this option and choose Add Parameter > Git Parameter.

Configuring Task Parameters

1. On the "Git Parameter" panel, configure the following parameters.
   The following describes the main parameters. For other parameters, simply keep them as their defaults:
   • Name: enter mbranch, which can be used to match and obtain a branch.
   • Parameter Type: select Branch or Tag.
2. Choose Add Parameters > Extended Choice Parameters. On the "Extended Choice Parameters" panel that appears, configure the following parameters, as shown in the following figure:
   
   The following describes the main parameters. For other parameters, simply keep them as their defaults:
   • Name: enter name, which can be used to obtain the image name.
   • Basic Parameter Types: select this option.
   • Parameter Type: select Check Boxes.
   • Value: select this option and enter a custom image name. This value will be passed to the name variable. This document uses nginx,php as an example.
3. Choose Add Parameters > Extended Choice Parameters. On the "Extended Choice Parameters" panel, configure the following parameters, as shown in the following figure:
   
   The following describes the main parameters. For other parameters, simply keep them as their defaults:
   • Name: enter version, which can be used to obtain the image tag variable.
   • Basic Parameter Types: select this option.
   • Parameter Type: select Text Box to obtain the image value in text format and pass it to the version variable.
4. Check Restrict the running node of the project. For the tag expression, enter the pod tag jnlp-agent set in the Configuring the slave pod template step.

Configuring Source Code Management

In the "Source Code Management" area, select Git and configure the following information.

• Repositories:
  • Repository URL: enter your GitLab address, such as https://gitlab.com/user-name/demo.git.
  • Credentials: select the authentication credential created in the Adding GitLab authentication step.
• Branches to build:
  • Specified branch (any if it is empty): enter $mbranch, which is used to dynamically obtain the branch, and its value corresponds to the value of mbranch defined in "Git Parameter".

Configuring the Shell Packaging Script

1. In the "Building" area, choose Add Building Step > Run Shell.

2. Copy and paste the following script content into the "Command" entry box. Then, click Save.

   • In this script, information such as the GitLab address, TKE image address, and username and password of the image repository are for example only. In actual cases, replace them based on your needs.
   • Be sure to build the package based on the source code of Docker build. In addition, the working directory /home/Jenkins/agent must be consistent with the working directory of the container template in "Container List".

    echo "GitLab address: https://gitlab.com/[user]/[project-name]].git" 
    echo "Selected branch (image): "$mbranch", set branch (image) version: "$version"
    echo "TKE image address: hkccr.ccs.tencentyun.com/[namespace]/[ImageName]"
   
    echo "1. Log in to the TKE image repository"
    docker login --username=[username] -p [password] hkccr.ccs.tencentyun.com
   
    echo "2. Build the package based on the source code of Docker build:"
    cd /home/Jenkins/agent/workspace/[project-name] && docker build -t $name:$version
   
    echo "3. Upload the Docker image to the TKE repository:"
    docker tag $name:$version hkccr.ccs.tencentyun.com/[namespace]/[ImageName]:$name-$version
    docker push hkccr.ccs.tencentyun.com/[namespace]/[ImageName]:$name-$version

   The script provides the following features:

   • Obtain the selected branch, image name, and image tag.
   • Publish the docker image combined and built with the code in the TKE image repository.

Subsequent Operations

You have now successfully built the slave pod. Next, go to Building Tests to publish and verify images.