centos7安装MariaDB教程，分享给大家
1.centos7现状：
新系统无法再使用yum install mysql-server来安装mysql，因为已使用mariadb代替mysql。
2.安装mariadb：
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[root@localhost ~]# yum -y install mariadb*Loaded plugins: fastestmirrorLoading mirror speeds from cached hostfile * base: mirrors.linode.com * extras: mirrors.linode.com * updates: mirrors.linode.comResolving Dependencies--> Running transaction check---> Package mariadb.x86_64 1:5.5.37-1.el7_0 will be installed---> Package mariadb-bench.x86_64 1:5.5.37-1.el7_0 will be installed---> Package mariadb-devel.x86_64 1:5.5.37-1.el7_0 will be installed---> Package mariadb-embedded.x86_64 1:5.5.37-1.el7_0 will be installed---> Package mariadb-embedded-devel.x86_64 1:5.5.37-1.el7_0 will be installed---> Package mariadb-libs.x86_64 1:5.5.37-1.el7_0 will be installed---> Package mariadb-server.x86_64 1:5.5.37-1.el7_0 will be installed--> Processing Dependency: perl-DBD-MySQL for package: 1:mariadb-server-5.5.37-1.el7_0.x86_64---> Package mariadb-test.x86_64 1:5.5.37-1.el7_0 will be installed--> Running transaction check---> Package perl-DBD-MySQL.x86_64 0:4.023-5.el7 will be installed--> Finished Dependency ResolutionDependencies Resolved========================================================================================================== Package Arch Version Repository Size==========================================================================================================Installing: mariadb x86_64 1:5.5.37-1.el7_0 updates 8.9 M mariadb-bench x86_64 1:5.5.37-1.el7_0 updates 385 k mariadb-devel x86_64 1:5.5.37-1.el7_0 updates 744 k mariadb-embedded x86_64 1:5.5.37-1.el7_0 updates 3.6 M mariadb-embedded-devel x86_64 1:5.5.37-1.el7_0 updates 7.4 M mariadb-libs x86_64 1:5.5.37-1.el7_0 updates 752 k mariadb-server x86_64 1:5.5.37-1.el7_0 updates 11 M mariadb-test x86_64 1:5.5.37-1.el7_0 updates 7.9 MInstalling for dependencies: perl-DBD-MySQL x86_64 4.023-5.el7 base 140 kTransaction Summary==========================================================================================================Install 8 Packages (+1 Dependent package)Total download size: 40 MInstalled size: 279 MDownloading packages:(1/9): mariadb-bench-5.5.37-1.el7_0.x86_64.rpm | 385 kB 00:00:00(2/9): mariadb-devel-5.5.37-1.el7_0.x86_64.rpm | 744 kB 00:00:00(3/9): mariadb-embedded-5.5.37-1.el7_0.x86_64.rpm | 3.6 MB 00:00:00(4/9): mariadb-5.5.37-1.el7_0.x86_64.rpm | 8.9 MB 00:00:00(5/9): mariadb-libs-5.5.37-1.el7_0.x86_64.rpm | 752 kB 00:00:00(6/9): mariadb-server-5.5.37-1.el7_0.x86_64.rpm | 11 MB 00:00:00(7/9): mariadb-embedded-devel-5.5.37-1.el7_0.x86_64.rpm | 7.4 MB 00:00:00(8/9): mariadb-test-5.5.37-1.el7_0.x86_64.rpm | 7.9 MB 00:00:00(9/9): perl-DBD-MySQL-4.023-5.el7.x86_64.rpm | 140 kB 00:00:00----------------------------------------------------------------------------------------------------------Total 36 MB/s | 40 MB 00:00:01Running transaction checkRunning transaction testTransaction test succeededRunning transaction Installing : 1:mariadb-libs-5.5.37-1.el7_0.x86_64 1/9 Installing : 1:mariadb-5.5.37-1.el7_0.x86_64 2/9 Installing : perl-DBD-MySQL-4.023-5.el7.x86_64 3/9 Installing : 1:mariadb-server-5.5.37-1.el7_0.x86_64 4/9 Installing : 1:mariadb-devel-5.5.37-1.el7_0.x86_64 5/9 Installing : 1:mariadb-embedded-5.5.37-1.el7_0.x86_64 6/9 Installing : 1:mariadb-embedded-devel-5.5.37-1.el7_0.x86_64 7/9 Installing : 1:mariadb-test-5.5.37-1.el7_0.x86_64 8/9 Installing : 1:mariadb-bench-5.5.37-1.el7_0.x86_64 9/9 Verifying : 1:mariadb-test-5.5.37-1.el7_0.x86_64 1/9 Verifying : 1:mariadb-embedded-devel-5.5.37-1.el7_0.x86_64 2/9 Verifying : 1:mariadb-embedded-5.5.37-1.el7_0.x86_64 3/9 Verifying : 1:mariadb-libs-5.5.37-1.el7_0.x86_64 4/9 Verifying : 1:mariadb-bench-5.5.37-1.el7_0.x86_64 5/9 Verifying : 1:mariadb-5.5.37-1.el7_0.x86_64 6/9 Verifying : 1:mariadb-server-5.5.37-1.el7_0.x86_64 7/9 Verifying : perl-DBD-MySQL-4.023-5.el7.x86_64 8/9 Verifying : 1:mariadb-devel-5.5.37-1.el7_0.x86_64 9/9Installed: mariadb.x86_64 1:5.5.37-1.el7_0 mariadb-bench.x86_64 1:5.5.37-1.el7_0 mariadb-devel.x86_64 1:5.5.37-1.el7_0 mariadb-embedded.x86_64 1:5.5.37-1.el7_0 mariadb-embedded-devel.x86_64 1:5.5.37-1.el7_0 mariadb-libs.x86_64 1:5.5.37-1.el7_0 mariadb-server.x86_64 1:5.5.37-1.el7_0 mariadb-test.x86_64 1:5.5.37-1.el7_0Dependency Installed: perl-DBD-MySQL.x86_64 0:4.023-5.el7Complete![root@localhost ~]# systemctl start mariadb.service[root@localhost ~]# systemctl enable mariadb.serviceln -s '/usr/lib/systemd/system/mariadb.service' '/etc/systemd/system/multi-user.target.wants/mariadb.servi ce'[root@localhost ~]# mysqlWelcome to the MariaDB monitor. Commands end with ; or \g.Your MariaDB connection id is 2Server version: 5.5.37-MariaDB MariaDB ServerCopyright (c) 2000, 2014, Oracle, Monty Program Ab and others.Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.MariaDB [(none)]> logout -> exit -> -> ;ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MariaD B server version for the right syntax to use near 'logoutexit' at line 1MariaDB [(none)]> exitBye[root@localhost ~]# systemctl enable mariadb.service[root@localhost ~]# mysqlWelcome to the MariaDB monitor. Commands end with ; or \g.Your MariaDB connection id is 3Server version: 5.5.37-MariaDB MariaDB ServerCopyright (c) 2000, 2014, Oracle, Monty Program Ab and others.Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.MariaDB [(none)]> show databases;+--------------------+| Database |+--------------------+| information_schema || mysql || performance_schema || test |+--------------------+rows in set (0.00 sec)MariaDB [(none)]> use testDatabase changedMariaDB [test]> show tables;Empty set (0.00 sec)MariaDB [test]> exitBye[root@localhost ~]# mysql_secure_installation/usr/bin/mysql_secure_installation: line 379: find_mysql_client: command not foundNOTE: RUNNING ALL PARTS OF THIS SCRIPT IS RECOMMENDED FOR ALL MariaDB SERVERS IN PRODUCTION USE! PLEASE READ EACH STEP CAREFULLY!In order to log into MariaDB to secure it, we'll need the currentpassword for the root user. If you've just installed MariaDB, andyou haven't set the root password yet, the password will be blank,so you should just press enter here.ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)Enter current password for root (enter for none):OK, successfully used password, moving on...Setting the root password ensures that nobody can log into the MariaDBroot user without the proper authorisation.Set root password? [Y/n] yNew password:Re-enter new password:Password updated successfully!Reloading privilege tables.. ... Success!By default, a MariaDB installation has an anonymous user, allowing anyoneto log into MariaDB without having to have a user account created forthem. This is intended only for testing, and to make the installationgo a bit smoother. You should remove them before moving into aproduction environment.Remove anonymous users? [Y/n] y ... Success!Normally, root should only be allowed to connect from 'localhost'. Thisensures that someone cannot guess at the root password from the network.Disallow root login remotely? [Y/n] y ... Success!By default, MariaDB comes with a database named 'test' that anyone canaccess. This is also intended only for testing, and should be removedbefore moving into a production environment.Remove test database and access to it? [Y/n] y - Dropping test database... ... Success! - Removing privileges on test database... ... Success!Reloading the privilege tables will ensure that all changes made so farwill take effect immediately.Reload privilege tables now? [Y/n] y ... Success!Cleaning up...All done! If you've completed all of the above steps, your MariaDBinstallation should now be secure.Thanks for using MariaDB![root@localhost ~]# mysql -uroot -pEnter password:Welcome to the MariaDB monitor. Commands end with ; or \g.Your MariaDB connection id is 15Server version: 5.5.37-MariaDB MariaDB ServerCopyright (c) 2000, 2014, Oracle, Monty Program Ab and others.Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.MariaDB [(none)]> show databases;+--------------------+| Database |+--------------------+| information_schema || mysql || performance_schema || zbphp.com |+--------------------+rows in set (0.00 sec)MariaDB [(none)]> |
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