背景介绍
ubuntu 20.04 版本系统自带的 MySQL 版本是 8.0,普通方法很难安装 5.7 版本的。由于 8.0 版本较 5.7 版本做了不少改动,笔者比较习惯使用 5.7 版本。
网上搜做了一圈,跟着各种教程试了很多遍,最后终于找到了成功的方法。过程记录分享出来,供大家参考。
安装过程
笔者的环境:
root@hz192-168-1.55:/home# cat /etc/lsb-release DISTRIB_ID=Ubuntu DISTRIB_RELEASE=20.04 DISTRIB_CODENAME=focal DISTRIB_DESCRIPTION="Ubuntu 20.04.4 LTS"
-
若已经安装了 8.0 版本的 MySQL,请先操作删除。
-
添加 MySQL 源
sudo vim /etc/apt/sources.list.d/mysql.list
添加如下内容,
deb http://repo.mysql.com/apt/ubuntu/ bionic mysql-apt-config deb http://repo.mysql.com/apt/ubuntu/ bionic mysql-5.7 deb http://repo.mysql.com/apt/ubuntu/ bionic mysql-tools deb-src http://repo.mysql.com/apt/ubuntu/ bionic mysql-5.7
更新命令
sudo apt update
执行过程中可能会出现如下错误,
W: GPG error: http://repo.mysql.com/apt/ubuntu bionic InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 467B942D3A79BD29 E: The repository 'http://repo.mysql.com/apt/ubuntu bionic InRelease' is not signed. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details.
执行如下命令即可,467B942D3A79BD29
根据实际情况替换。
sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv 76F1A20FF987672F
接着再重新执行更新,
sudo apt update
- 安装 MySQL
查看支持的 MySQL 版本,此处我们已经可以看到有 5.7.40-1ubuntu18.04
,接近成功了。
root@hz192-168-1-55:/home# sudo apt-cache policy mysql-server mysql-server: Installed: (none) Candidate: 8.0.30-0ubuntu0.20.04.2 Version table: 8.0.30-0ubuntu0.20.04.2 500 500 http://mirrors.aliyun.com/ubuntu focal-updates/main amd64 Packages 500 http://mirrors.aliyun.com/ubuntu focal-security/main amd64 Packages 8.0.19-0ubuntu5 500 500 http://mirrors.aliyun.com/ubuntu focal/main amd64 Packages 5.7.40-1ubuntu18.04 500 500 http://repo.mysql.com/apt/ubuntu bionic/mysql-5.7 amd64 Packages
安装 MySQL 5.7 版本客户端和服务端,版本信息根据上面的输出自行修改。
sudo apt install mysql-client=5.7.40-1ubuntu18.04 sudo apt install mysql-server=5.7.40-1ubuntu18.04
如无需安装 mysql-client 服务,执行安装 mysql-server 服务,可能会报如下错误。
只需要手动安装 mysql-community-server 即可。sudo apt install mysql-community-server=5.7.40-1ubuntu18.04
The following packages have unmet dependencies:
mysql-server : Depends: mysql-community-server (= 5.7.40-1ubuntu18.04) but it is not going to be installed
- 验证
root@hz192-168-1-55:/home# mysql --version mysql Ver 14.14 Distrib 5.7.40, for Linux (x86_64) using EditLine wrapper
ok, 完结。踩坑君再次填好一个坑,接着去踩下一个啦。
参考链接地址:
https://www.cnblogs.com/immaxfang/p/16804455.html
https://blog.csdn.net/weixin_44543463/article/details/113825319