When setting up Jenkins in Docker environment, the console log shows garbled Chinese characters when building tasks

1. Problem description:

In the Linux environment Centos operating system, after downloading the Jenkins image through Docker, a container was created, and the Jenkins address was accessed through the server IP+port, and the relevant configuration was performed. Then a task job was created to build and run the Java+Selenium automated test script. The current build is Success. The only drawback is that the printed log appears garbled, as shown below:

(Note: The execution machine is Jenkins itself, the same machine)

2. Troubleshoot Jenkins settings

Jenkins system settings view the language part in the global properties

2. Jenkins detailed information (add /systemInfo after the browser Jenkins address)

3. Code log encoding method

1. Check if the printed log is utf-8. It is confirmed that it is

4. Linux server language information

1. Check the host language configuration and enter the command: locale -a

2. View /.vimrc

I didn't dare to change it here because it would not affect the scope. I just found the article on CSDN.

This is not very clear, the answer given online is:

https://blog.csdn.net/u010189459/article/details/38338735

The general meaning is that in vimrc, encoding can set these items at the same time:

set encoding=utf-8 set langmenu=zh_CN.UTF-8 language message zh_CN.UTF-8

5. Final investigation

Now that the Jenkins system settings and the host language have been checked, let's start checking the container

1. Enter the Jenkins container

docker exec -it container ID /bin/bash

View Language

Then enter

export LC_ALL="C.UTF-8"

Write at the end of /etc/bash.bashrc, then source /etc/bash.bashrc and find that there is no vim, so forget it.

lc_all actually assigns values ​​to all the variables above, and the effect is the same, but it doesn't hurt to try. Generally speaking, there is no such thing. Docker itself has a complete operating system and has nothing to do with the host machine.

2. Enter the Chrome browser container

set LC_ALL="C.UTF-8"

3. Then modify the global properties of the Jenkins system settings, change the previous LANG = zh_CN .UTF-8 to LANG = C.UTF-8. The reason is: at present, the server market is basically occupied by centos and debian. Centos relies on redhat, debian is self-sourced, centos is derived from redhat, various patches and services are more complete, centos is also used as a server. If I am not wrong, the host machine where Jenkins is located uses the debian system instead of centos, because the locale in debian supports zh_CN.UTF-8, and centos supports C.UTF-8

Finally, restart the Jenkins service (add /restart after the Jenkins address), then start the task and view the log of the Jenkins console!

Postscript: It may be that the language needs to be set in the container. It may be related to the Jenkins system setting of the global property language LANG = C.UTF-8.

Summarize

The above is the problem of garbled Chinese characters appearing in the console log when building Jenkins tasks in the Docker environment introduced by the editor. I hope it will be helpful to everyone!