安装percona mysql 5.7（单机_yum方式）-LIVE_FOR-51CTO博客

基础环境：OS：Red Hat Enterprise Linux Server release 7.6 (Maipo)mysql：Percona版（5.7最新，可选mysql8）操作步骤：1、关闭防火墙修改/etc/sysconfig/selinux的配置，命令如下# sed -i 's#SELINUX=enforcing#SELINUX=disabled#g' /etc/sysconfig/selinux关闭Selinux(强烈建议关闭)# setenforce 0关闭防火墙# systemctl stop firewalld去除开机启动# systemctl disable firewalld2、安装Percona 的yum信息库到本机上# yum install https://repo.percona.com/yum/percona-release-latest.noarch.rpm3、检查本机是否有mysql或者mariadb

# rpm -qa | grep mysql 
# rpm -qa | grep  mariadb

发现有一个库文件mariadb-libs-5.5.41-2.el7_0.x86_64，强制删除掉# rpm -e --nodeps mariadb-libs4、安装percona server# yum install Percona-Server-server-57漫长的等待之后发现有个报错：GPG Keys are configured as: file:///etc/pki/rpm-gpg/RPM-GPG-KEY-Percona可能是刚刚安装的信息库有问题，不是最新，更新之# yum update percona-release然后再次执行安装即可5、创建目录及权限修改

# mkdir -p /opt/mysql/{mysql_data,mysql_log}
# chown -R mysql:mysql /opt/mysql　
# usermod -d /opt/mysql mysql

6、创建配置文件从网络下载一个文件my.cnf，注意修改对应的目录为我们刚刚创建的目录7、修改启动文件/etc/systemd/system/mysql.service

  # sed -i 's#/var/run/mysqld/mysqld.pid#/opt/mysql/mysql_log/mysqld.pid#g' /etc/systemd/system/mysql.service
  # sed -i 's#/var/run/mysqld/mysqld.pid#/opt/mysql/mysql_log/mysqld.pid#g' /usr/lib/systemd/system/mysqld.service
  # sed -i 's#LimitNOFILE = 5000#LimitNOFILE = 100000#g' /etc/systemd/system/mysql.service
  # sed -i 's#LimitNOFILE = 5000#LimitNOFILE = 100000#g' /usr/lib/systemd/system/mysqld.service

重新加载配置# systemctl daemon-reload8、启动服务# service mysqld restart9、修改root密码获取mysql初始密码

# grep -i 'password' /opt/mysql/mysql_log/error.log　

2020-03-18T04:07:12.534522Z 1 [Note] A temporary password is generated for root@localhost: ws+Pezm/r31i

# mysql -u root -p' ws+Pezm/r31i'

sql> SET PASSWORD FOR root@'localhost' = '****'; #更改root密码10、权限赋值（运行任何IP可以root访问DB）sql> grant all on *.* to root@'%' identified by 'your_password';sql> flush privileges;