mysqldump: [ERROR] unknown variable 'database=test'.

背景：
導出數據庫test庫的test表數據出現報錯信息：mysqldump: [ERROR] unknown variable 'database=test'.

原來是my.cnf參數文件配置了以下內容：
[client]
user=test
port=3306
database=test

將database參數注釋掉，就不再出現報錯。

[root@node01 tmp]# mysqldump -utest -pmysql test test > /tmp/ttt.sql
mysqldump: [Warning] Using a password on the command line interface can be insecure.
Warning: A partial dump from a server that has GTIDs will by default include the GTIDs of all transactions, even those that changed suppressed parts of the database. If you don't want to restore GTIDs, pass --set-gtid-purged=OFF. To make a complete dump, pass --all-databases --triggers --routines --events.