Docker solves the problem that the terminal cannot input Chinese

Preface:

One day, I built a MySQL service in Docker and found that I could not enter Chinese characters in the MySQL command line. Chinese characters were also replaced by ?. I initially thought it was a problem with the MySQL character set. After checking, the problem was not solved. I exited the container terminal and found that I could not enter Chinese characters either. I inferred that there was a problem with the system character set. The solution process is recorded as follows:

Before resolution:

# Enter the container to view the character set [root@master2 ~]# docker exec -it b18f56aa1e15 /bin/bash
root@b18f56aa1e15:/# locale
LANG=
LANGUAGE=
LC_CTYPE="POSIX"
LC_NUMERIC="POSIX"
LC_TIME="POSIX"
LC_COLLATE="POSIX"
LC_MONETARY="POSIX"
LC_MESSAGES="POSIX"
LC_PAPER="POSIX"
LC_NAME="POSIX"
LC_ADDRESS="POSIX"
LC_TELEPHONE="POSIX"
LC_MEASUREMENT="POSIX"
LC_IDENTIFICATION="POSIX"
LC_ALL=
# View the character sets supported by the container root@b18f56aa1e15:/# locale -a
C
C.UTF-8
POSIX

Cannot input Chinese characters: The system uses the POSIX character set, which does not support Chinese characters, while C.UTF-8 does. The problem can be solved by changing the system's environment LANG to "C.UTF-8" format.

Just enter the container like this to input Chinese: docker exec -it b18f56aa1e15 env LANG=C.UTF-8 /bin/bash

[root@master2 ~]# docker exec -it b18f56aa1e15 env LANG=C.UTF-8 /bin/bash
root@b18f56aa1e15:/# Helloroot@b18f56aa1e15:/# mysql -uroot -p
Enter password: 
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 80
Server version: 5.7.17-log MySQL Community Server (GPL)

Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> Hello

Notice:

This modification is only temporary. To make the change permanent, you need to set it in the Dockerfile when you create the container.
This method can also be used to solve the problem that Chinese characters cannot be entered when entering the pod in K8s.

The above is the details of how Docker solves the problem of being unable to input Chinese characters in the terminal. For more information about Docker solving the problem of being unable to input Chinese characters, please pay attention to other related articles on 123WORDPRESS.COM!