安裝
wget
rpm -ivh mysql57-community-release-el7-9.noarch.rpm
yum install mysql-server
systemctl start mysqld
找初始密碼：
# grep "temporary password" /var/log/mysqld.log
2020-07-01t01:37:50.408894z 1 [note] a temporary password is generated for root@localhost: (alter user 'root'@'localhost' identified by '_shanghai#31';
query ok, 0 rows affected (0.01 sec)
開啟遠端連線：
show databases;
use mysql;
show tables;
update user set host='%' where user='root';
grant all privileges on *.* to root@"192.168.%" identified by "_shanghai#31";
flush privileges;
配置預設編碼為utf8
vi /etc/my.cnf
# 新增 [mysqld]
character_set_server=utf8
init_connect='set names utf8'
更改mysql安裝目錄：
先建立目錄
[root@dev-base1 /data]
# cd /data
# mkdir mysqldata
# chmod 777 /data/mysqldata
停止資料庫
# systemctl stop mysqld
複製資料目錄 & 備份原有資料目錄
# cp -r /var/lib/mysql /data/mysqldata
# mv /var/lib/mysql /var/lib/mysql_bak
# chown -r mysql:mysql /data/mysqldata
修改配置檔案：
# vim /etc/my.cnf
新增配置：
datadir=/data/mysqldata/mysql
socket=/data/mysqldata/mysql.sock
log-error=/data/mysqldata/mysql/mysqld.log
啟動資料庫&設定開機自啟
# systemctl restart mysqld
# systemctl enable mysqld
檢視啟動程序：
[root@dev-base1 /data/mysqldata]
# ps -ef |grep mysql
mysql 1183 1 1 10:06 ? 00:00:00 /usr/sbin/mysqld --daemonize --pid-file=/var/run/mysqld/mysqld.pid
root 1213 62664 0 10:07 pts/0 00:00:00 grep --color=auto mysql
登入測試：
[root@dev-base1 /data/mysqldata]
# mysql -u root -p
enter password:
error 2002 (hy000): can't connect to local mysql server through socket '/var/lib/mysql/mysql.sock' (2)
解決mysql.sock問題：
[root@dev-base1 /data/mysqldata]
# mkdir -p /var/lib/mysql
[root@dev-base1 /data/mysqldata]
# ln -s /data/mysqldata/mysql.sock /var/lib/mysql/mysql.sock
[root@dev-base1 /data/mysqldata]
# mysql -u root -p
enter password:
welcome to the mysql monitor. commands end with ; or \g.
your mysql connection id is 4
server version: 5.7.30 mysql community server (gpl)
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>
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