CentOS 7 下使用yum安装MySQL5.7.20

最新推荐文章于 2025-09-10 22:21:01 发布

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最新推荐文章于 2025-09-10 22:21:01 发布

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文章标签：数据库运维开发工具

原文链接：https://juejin.im/post/5c430ffbe51d4551ec60c348

本文提供了一步一步的指南，教你如何在Linux环境下卸载旧版MySQL并重新安装MySQL5.7.20。首先，通过停止MySQL进程和使用rpm和yum命令彻底卸载现有MySQL组件。然后，从MySQL官方网站下载repo源，使用rpm安装，并通过yum安装MySQL服务器。最后，配置my.cnf文件，设置关键参数如datadir、socket和log-error等，以确保MySQL服务的正常运行。

原文链接

1.卸载先停掉mysql进程没有安装过的可以直接跳过

pkill -9 mysqld

rpm -qa|grep -i mysql

yum -y remove mysql-community-client-5.6.38-2.el7.x86_64
依次卸载 直到没有
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2.下载mysql的repo源这个安装的mysql5.7.20

[root@localhost ~]# cd /usr/local/src/ [root@localhost src]# wget repo.mysql.com/mysql57-com…

[root@localhost src]# rpm -ivh mysql57-community-release-el7-8.noarch.rpm

[root@localhost src]# yum -y install mysql-server

（也可以指定安装目录 yum --installroot=/usr/local/mysql --releasever=/ -y install mysql-server ）我没试，这样装环境变量配置都不用你管，装上直接启动就行。安装路径是默认的。

配置 my.cnf vim /etc/my.cnf


[mysqld]
# Remove leading # and set to the amount of RAM for the most important data
# cache in MySQL. Start at 70% of total RAM for dedicated server, else 10%.
# innodb_buffer_pool_size = 128M
# Remove leading # to turn on a very important data integrity option: logging
# changes to the binary log between backups.
# log_bin
# Remove leading # to set options mainly useful for reporting servers.
# The server defaults are faster for transactions and fast SELECTs.
# Adjust sizes as needed, experiment to find the optimal values.
# join_buffer_size = 128M
# sort_buffer_size = 2M
# read_rnd_buffer_size = 2M
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
server_id = 1
expire_logs_days = 3
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid
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