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本文記錄了RHEL7.5下mysql 8.0.11安裝教程,具體內容如下
首先去mysql官網下載mysql-8.0.11-el7-x86_64.tar 解壓。
由于mysql初始化、啟動都需要用到mysql用戶,所以創建一個mysql用戶:
useradd -d /home/mysql -m -s /bin/bash mysql
經過測試發現系統中裝有mariadb相關的mysql啟動的時候會報錯,于是卸載和mariadb相關的包。
[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 succeeded 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.com * epel: mirrors.ustc.edu.cn * extras: mirrors.aliyun.com * updates: mirrors.aliyun.com 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!
使用如下命令初始化數據庫,會在把/var/lib/mysql作為data文件的目錄:
shell> bin/mysqld --initialize --user=mysql
于是我們可以在初始化的時候指定相應的文件目錄:
bin/mysqld --initialize --basedir=/home/mysql --datadir=/home/mysql/data --user=mysql
初始化的時候,會生成一個臨時的密碼,記住該密碼,等登錄到mysql的時候需要用這個密碼,進去后再次修改密碼。
啟動mysql實例:
bin/mysqld --user=mysql bin/mysqld_safe basedir=/home/mysql --datadir=/home/mysql/data --user=mysql
如果不加 –user=mysql 就會出現如下的提示:
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
造成mysql實例不能正常啟動。
mysql啟動后,使用root用戶登錄,使用剛剛隨機生成的密碼,進去后,通過如下命令修改root用戶的密碼,再做其他操作:
set password ='root';
RHEL7的服務systemctl腳本存放在:/usr/lib/systemd/,有系統(system)和用戶(user)之分,像需要開機不登陸就能運行的程序,還是存在系統服務里吧,即:/usr/lib/systemd/system目錄下
每一個服務以.service結尾,一般會分為3部分:[Unit]、[Service]和[Install],現在把MYSQL添加進去,具體內容如下:
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 ExecStop=kill -s -QUIT $MAINPID Restart=on-failure RestartPreventExitStatus=1 PrivateTmp=false
就可以通過systemctl來 啟動,重啟,關閉mysql服務。
精彩專題分享:
mysql不同版本安裝教程
mysql5.7各版本安裝教程
mysql5.6各版本安裝教程
mysql8.0各版本安裝教程
以上就是本文的全部內容,希望對大家的學習有所幫助,也希望大家多多支持億速云。
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