centos7手动安装mysql-8.0

[root@node-3 mysql]# rpm -ivh mysql-community-common-8.0.11-1.el7.x86_64.rpm 
warning: mysql-community-common-8.0.11-1.el7.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY
Preparing...                          ################################# [100%]
Updating / installing...
   1:mysql-community-common-8.0.11-1.e################################# [100%]
[root@node-3 mysql]# systemctl status mysqld
Unit mysqld.service could not be found.
[root@node-3 mysql]# systemctl start mysqld
Failed to start mysqld.service: Unit not found.
[root@node-3 mysql]# rpm -ivh mysql-community-libs-8.0.11-1.el7.x86_64.rpm 
warning: mysql-community-libs-8.0.11-1.el7.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY
Preparing...                          ################################# [100%]
Updating / installing...
   1:mysql-community-libs-8.0.11-1.el7################################# [100%]
[root@node-3 mysql]# rpm -ivh mysql-community-client-8.0.11-1.el7.x86_64.rpm 
warning: mysql-community-client-8.0.11-1.el7.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY
Preparing...                          ################################# [100%]
Updating / installing...
   1:mysql-community-client-8.0.11-1.e################################# [100%]
[root@node-3 mysql]# rpm -ivh mysql-community-server-8.0.11-1.el7.x86_64.rpm 
warning: mysql-community-server-8.0.11-1.el7.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY
Preparing...                          ################################# [100%]
Updating / installing...
   1:mysql-community-server-8.0.11-1.e################################# [100%]
[root@node-3 mysql]# rpm -ivh mysql-community-devel-8.0.11-1.el7.x86_64.rpm 
warning: mysql-community-devel-8.0.11-1.el7.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY
error: Failed dependencies:
pkgconfig(openssl) is needed by mysql-community-devel-8.0.11-1.el7.x86_64
[root@node-3 mysql]# rpm -ivh mysql-community-devel-8.0.11-1.el7.x86_64.rpm 
warning: mysql-community-devel-8.0.11-1.el7.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY
error: Failed dependencies:

pkgconfig(openssl) is needed by mysql-community-devel-8.0.11-1.el7.x86_64

出现错误命令加 --force --nodeps

[root@node-3 mysql]# rpm -ivh mysql-community-devel-8.0.11-1.el7.x86_64.rpm --force --nodeps
warning: mysql-community-devel-8.0.11-1.el7.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY
Preparing...                          ################################# [100%]
Updating / installing...

   1:mysql-community-devel-8.0.11-1.el################################# [100%]

安装成功

启动[root@node-3 mysql]# systemctl start mysqld

查看

[root@node-3 mysql]# systemctl status mysqld
● mysqld.service - MySQL Server
   Loaded: loaded (/usr/lib/systemd/system/mysqld.service; enabled; vendor preset: disabled)
   Active: active (running) since Fri 2018-04-20 11:18:25 CST; 14s ago
     Docs: man:mysqld(8)
           http://dev.mysql.com/doc/refman/en/using-systemd.html
  Process: 44116 ExecStartPre=/usr/bin/mysqld_pre_systemd (code=exited, status=0/SUCCESS)
 Main PID: 44218 (mysqld)
   Status: "SERVER_OPERATING"
   CGroup: /system.slice/mysqld.service
           └─44218 /usr/sbin/mysqld


Apr 20 11:17:33 node-3 systemd[1]: Starting MySQL Server...

Apr 20 11:18:25 node-3 systemd[1]: Started MySQL Server.

查看原始密码

cat /var/log/mysqld.log | grep password

set global validate_password.length=4;

set global validate_password.policy=0;

ALTER USER 'root'@'localhost' identified by '新密码' password expire never;