安装安装mysql5.6

下载mysql的yum包点击打开链接下载

下载完成后

安装不

rmp -ivh mysql57-community-release-el7-11.noarch.rpm

vi /etc/yum.repos.d/mysql-community.repo
将MySQL 5.6 enabled=1，MySQL 5.7 enabled=0
[mysql56-community]
name=MySQL 5.6 Community Server
baseurl=http://repo.mysql.com/yum/mysql-5.6-community/el/7/$basearch/
enabled=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-mysql

[mysql57-community]
name=MySQL 5.7 Community Server
baseurl=http://repo.mysql.com/yum/mysql-5.7-community/el/7/$basearch/
enabled=0
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-mysql

yum repolist all | grep mysql

接下来设置yum，直接安装是mysql5.7的，设置为5.6

yum repolist all | grep mysql
出现如下信息代表可以安装mysql了
mysql-cluster-7.5-community/x86_64 MySQL Cluster 7.5 Community      禁用
mysql-cluster-7.5-community-source MySQL Cluster 7.5 Community - So 禁用
mysql-cluster-7.6-community/x86_64 MySQL Cluster 7.6 Community      禁用
mysql-cluster-7.6-community-source MySQL Cluster 7.6 Community - So 禁用
!mysql-connectors-community/x86_64 MySQL Connectors Community       启用:     36
mysql-connectors-community-source  MySQL Connectors Community - Sou 禁用
!mysql-tools-community/x86_64      MySQL Tools Community            启用:     47
mysql-tools-community-source       MySQL Tools Community - Source   禁用
mysql-tools-preview/x86_64         MySQL Tools Preview              禁用
mysql-tools-preview-source         MySQL Tools Preview - Source     禁用
mysql55-community/x86_64           MySQL 5.5 Community Server       禁用
mysql55-community-source           MySQL 5.5 Community Server - Sou 禁用
!mysql56-community/x86_64          MySQL 5.6 Community Server       启用:    327
mysql56-community-source           MySQL 5.6 Community Server - Sou 禁用
!mysql57-community/x86_64          MySQL 5.7 Community Server       禁用
mysql57-community-source           MySQL 5.7 Community Server - Sou 禁用
mysql80-community/x86_64           MySQL 8.0 Community Server       禁用
mysql80-community-source           MySQL 8.0 Community Server - Sou 禁用

yum repolist all | grep mysql
出现如下信息代表可以安装mysql了
mysql-cluster-7.5-community/x86_64 MySQL Cluster 7.5 Community      禁用
mysql-cluster-7.5-community-source MySQL Cluster 7.5 Community - So 禁用
mysql-cluster-7.6-community/x86_64 MySQL Cluster 7.6 Community      禁用
mysql-cluster-7.6-community-source MySQL Cluster 7.6 Community - So 禁用
!mysql-connectors-community/x86_64 MySQL Connectors Community       启用:     36
mysql-connectors-community-source  MySQL Connectors Community - Sou 禁用
!mysql-tools-community/x86_64      MySQL Tools Community            启用:     47
mysql-tools-community-source       MySQL Tools Community - Source   禁用
mysql-tools-preview/x86_64         MySQL Tools Preview              禁用
mysql-tools-preview-source         MySQL Tools Preview - Source     禁用
mysql55-community/x86_64           MySQL 5.5 Community Server       禁用
mysql55-community-source           MySQL 5.5 Community Server - Sou 禁用
!mysql56-community/x86_64          MySQL 5.6 Community Server       启用:    327
mysql56-community-source           MySQL 5.6 Community Server - Sou 禁用
!mysql57-community/x86_64          MySQL 5.7 Community Server       禁用
mysql57-community-source           MySQL 5.7 Community Server - Sou 禁用
mysql80-community/x86_64           MySQL 8.0 Community Server       禁用
mysql80-community-source           MySQL 8.0 Community Server - Sou 禁用

安装

安装
yum install mysql-community-server
启动mysql
systemctl start  mysqld
设置mysql初始密码
mysql_secure_installation

如果密码修改不了可以参考我的MySQL修改密码文章

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