CentOS7 64位 安装mysql步骤

 

参考链接：https://blog.csdn.net/a774630093/article/details/79270080

操作步骤

1，检查系统是否已经装有mysql

rpm -qa | grep mysql

返回空值，说明没有安装

这里执行安装命令是无效的，因为centos-7默认是Mariadb，所以执行以下命令只是更新Mariadb数据库

yum install mysql

删除

yum remove mysql

2，这里开始正式安装步骤

下载mysql的repo源

#wget http://repo.mysql.com/mysql-community-release-el7-5.noarch.rpm

 查看下载的repo源，并安装mysql-community-release-el7-5.noarch.rpm包

[root@izuf60oxykv1p0r3dxlc6pz src]# ls
mysql-community-release-el7-5.noarch.rpm
[root@izuf60oxykv1p0r3dxlc6pz src]# rpm -ivh mysql-community-release-el7-5.noarch.rpm
Preparing...                          ################################# [100%]
Updating / installing...
   1:mysql-community-release-el7-5    ################################# [100%]
[root@izuf60oxykv1p0r3dxlc6pz src]# rpm -qa | grep mysql
mysql-community-release-el7-5.noarch
[root@izuf60oxykv1p0r3dxlc6pz src]# cd /etc/yum.repos.d/
[root@izuf60oxykv1p0r3dxlc6pz yum.repos.d]# ls
CentOS-Base.repo       CentOS-fasttrack.repo  CentOS-Vault.repo  epel-testing.repo     mysql-community-source.repo
CentOS-CR.repo         CentOS-Media.repo      epel.repo          influxdb.repo         nginx.repo
CentOS-Debuginfo.repo  CentOS-Sources.repo    epel.repo.rpmnew   mysql-community.repo

3，安装mysql

# yum install mysql-server

安装完之后查看

# rpm -qa | grep mysql
mysql-community-libs-5.6.43-2.el7.x86_64
mysql-community-common-5.6.43-2.el7.x86_64
mysql-community-server-5.6.43-2.el7.x86_64
mysql-community-release-el7-5.noarch
mysql-community-client-5.6.43-2.el7.x86_64

4，重置密码

# mysql -u root
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)

然后这里遇到问题，解决方法

修改mysql路径权限

#chown -R mysql:mysql /var/lib/mysql
#chown -R mysql:mysql /usr/sbin/mysqld
#chown -R mysql:mysql /var/run/mysqld

重启之后再重试已经可以了

# service mysqld restart
Redirecting to /bin/systemctl restart mysqld.service
# mysql -u root     
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.6.43 MySQL Community Server (GPL)

Copyright (c) 2000, 2019, 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>

然后修改密码

mysql> use mysql
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A

Database changed
mysql>  update user set password=password('123456') where user='root';
Query OK, 3 rows affected (0.00 sec)
Rows matched: 3  Changed: 3  Warnings: 0

mysql> GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY '123456' WITH GRANT OPTION;
Query OK, 0 rows affected (0.01 sec)

mysql> FLUSH PRIVILEGES;
Query OK, 0 rows affected (0.00 sec)

mysql> exit
Bye