CentOS伺服器mysql更改儲存路徑及可能出現的問題
阿新 • • 發佈：2018-12-23
環境：
CentOS:5.11 mysql-server:5.0.95
1.停止mysql服務程序
service mysqld stop2.拷貝資料
cp -rp /var/lib/mysql 目標路徑3.修改/etc/my.cnf
將datadir和socket改成新的路徑
#datadir=/var/lib/mysql
datadir=/mnt/sdb1/mysql
#socket=/var/lib/mysql/mysql/sock
socket=/mnt/sdb1/mysql/mysql.sock
4.修改mysql啟動指令碼/etc/init.d/mysqld
將datadir改成新的路徑
5.重新啟動mysql服務
出現的問題：
1.伺服器登入mysql報Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock'
解決方法：在/var/llib/mysql下建立軟連結(該方法同樣也能解決其他呼叫mysql資料庫服務的類似程式報錯)
ln -s /mnt/sdb1/mysql/mysql.sock /var/lib/mysql/mysql.sock2.mysqld服務啟動失敗 /var/log/mysqld.log報錯:
解決方法：關閉selinux或者將selinux的訪問許可權設定為permissive模式160523 12:58:03 mysqld started 160523 12:58:03 [Warning] Can't create test file /mnt/sdb1/mysql/localhost.lower -test 160523 12:58:03 [Warning] Can't create test file /mnt/sdb1/mysql/localhost.lower -test /usr/libexec/mysqld: Can't change dir to '/mnt/sdb1/mysql/' (Errcode: 13) 160523 12:58:03 [ERROR] Aborting 160523 12:58:03 [Note] /usr/libexec/mysqld: Shutdown complete
[[email protected] selinux]# getenforce
Enforcing
[[email protected] selinux]# setenforce 0
[[email protected] selinux]# getenforce
Permissive參考：