報錯：
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)
1、樓主是新安裝的mysql，注意新安裝完成不會默認啟動服務
2、百度上各種處理辦法均不對，查看數據庫狀態發現未啟動！！！
3、重啟把服務拉起即可成功連接：systemctl start mariadb.service
4、安裝新服務后一定要先檢查服務的狀態信息，再去判斷報錯！！！
免責聲明！
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ERROR 2002 (HY000): Can't connect to local MySQL server through socket ‘/var/lib/mysql/mysql.sock' (2)
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