RHEL7.5下mysql 8.0.11安装教程

useradd -d /home/mysql -m -s /bin/bash mysql

[root@rhel mysql]# yum remove mariadb
Loaded plugins: axelget, fastestmirror, langpacks, product-id, search-disabled-
  : repos, subscription-manager
This system is not registered with an entitlement server. You can use subscription-manager to register.
Resolving Dependencies
--> Running transaction check
---> Package mariadb-libs.x86_64 1:5.5.56-2.el7 will be erased
--> Processing Dependency: libmysqlclient.so.18()(64bit) for package: 2:postfix-2.10.1-6.el7.x86_64
--> Processing Dependency: libmysqlclient.so.18(libmysqlclient_18)(64bit) for package: 2:postfix-2.10.1-6.el7.x86_64
--> Running transaction check
---> Package postfix.x86_64 2:2.10.1-6.el7 will be erased
--> Finished Dependency Resolution
epel/x86_64/group_gz     | 266 kB 00:00 

Dependencies Resolved

================================================================================
 Package  Arch  Version  Repository Size
================================================================================
Removing:
 mariadb-libs  x86_64  1:5.5.56-2.el7  @base  4.4 M
Removing for dependencies:
 postfix  x86_64  2:2.10.1-6.el7  @base  12 M

Transaction Summary
================================================================================
Remove 1 Package (+1 Dependent package)

Installed size: 17 M
Is this ok [y/N]: y
Downloading packages:
Running transaction check
Running transaction test
Transaction test sueeded
Running transaction
 Erasing : 2:postfix-2.10.1-6.el7.x86_64    1/2 
 Erasing : 1:mariadb-libs-5.5.56-2.el7.x86_64    2/2 
No metadata available for base
No metadata available for code
No metadata available for epel
No metadata available for extras
No metadata available for updates
Loading mirror speeds from cached hostfile
  base: mirrors.aliyun.
  epel: mirrors.ustc.edu.
  extras: mirrors.aliyun.
  updates: mirrors.aliyun.
epel/x86_64/primary_db     | 6.3 MB 00:01 
 Verifying : 1:mariadb-libs-5.5.56-2.el7.x86_64    1/2 
 Verifying : 2:postfix-2.10.1-6.el7.x86_64    2/2 

Removed:
 mariadb-libs.x86_64 1:5.5.56-2.el7      

Dependency Removed:
 postfix.x86_64 2:2.10.1-6.el7       

Complete!

shell> bin/mysqld --initialize --user=mysql

bin/mysqld --initialize --basedir=/home/mysql --datadir=/home/mysql/data --user=mysql

bin/mysqld --user=mysql
bin/mysqld_safe basedir=/home/mysql --datadir=/home/mysql/data --user=mysql

2018-04-22T15:47:25.471462Z 0 [ERROR] [MY-010123] [Server] Fatal error: Please read "Security" section of the manual to find out how to run mysqld as root!
2018-04-22T15:47:25.471514Z 0 [ERROR] [MY-010119] [Server] Aborting

set password ='root';

cat /usr/lib/systemd/system/mysql.service
[Unit]
Description=mysql Server
After=Network.target
After=syslog.target

[Install]
WantedBy=multi-user.target

[Service]
User=mysql
Group=mysql

Type=forking
# Execute pre and post scripts as root
PermissionsStartOnly=true
# Start main service
ExecStart=/home/mysql/bin/mysqld --daemonize
ExecS=kill -s -QUIT $MAINPID
Restart=on-failure
RestartPreventExitStatus=1
PrivateTmp=false