centos 7安装mysql5.5和安装 mariadb使用的命令_mariadb_

以前的Linux系统中数据库大部分是mysql，不过自从被sun收购之后，就没用集成在centos这些开源Linux系统中了，那么如果想用的话就需要自己安装了，首先centos7 已经不支持mysql，因为收费了你懂得，所以内部集成了mariadb，而安装mysql的话会和mariadb的文件冲突，所以需要先卸载掉mariadb，以下为卸载mariadb，安装mysql的步骤。

#列出所有被安装的rpm package

 rpm -qa | grep mariadb

#卸载

 rpm -e mariadb-libs-5.5.37-1.el7_0.x86_64

错误：依赖检测失败：

        libmysqlclient.so.18()(64bit) 被 (已安裝) postfix-2:2.10.1-6.el7.x86_64 需要

        libmysqlclient.so.18(libmysqlclient_18)(64bit) 被 (已安裝) postfix-2:2.10.1-6.el7.x86_64 需要

#强制卸载，因为没有--nodeps

rpm -e --nodeps mariadb-libs-5.5.37-1.el7_0.x86_64

#安装mysql5.5.39的rpm包

rpm -ivh /home/liwei/MySQL-server-5.5.39-2.el6.x86_64.rpm

rpm -ivh /home/liwei/MySQL-client-5.5.39-2.el6.x86_64.rpm

#拷贝配置文件

cp /usr/share/mysql/my-medium.cnf /etc/my.cnf，改名为my.cnf作为mysql配置文件。

#修改响应的配置文件

vim /etc/my.cnf

#把mysql的data拷贝到制定的目录

mv /var/lib/mysql　/home/mysql/data/

还要注意目录的属主和权限。

MYSQL启动后报：ERROR! The server quit without updating PID file错误的问题解决

1、权限不够：chown -R mysql:mysql /home/mysql/data” “chmod -R 755 /home/mysql/data

2、centos7的selinux问题：打开/etc/selinux/config，把SELINUX=enforcing改为SELINUX

centos7 安装 mariadb 的正确命令

使用的是linode的centos7系统，安装mysql发现已经默认的是mariadb。

但是不管是使用linode官网说明还是百度搜索到的的根本安装方法无法安装成功。

总是提示这一句：

ERROR 2002 (HY000): Can't connect to local Mysql server through socket '/var/lib/mysql/mysql.sock' (2)

最后通过google 搜索 install mariadb on centos 7得到了安装的关键一步。

现在安装成功，特此备注一下整个安装过程：

mysql:[root@localhost ~]# yum -y install mariadb* 

Loaded plugins: fastestmirror 

Loading mirror speeds from cached hostfile  

 * base: mirrors.linode.com  

 * extras: mirrors.linode.com  

 * updates: mirrors.linode.com 

Resolving 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 Resolution 

Dependencies 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 M 

Installing for dependencies:  

 perl-DBD-MySQL                    x86_64            4.023-5.el7                 base               140 k 

Transaction Summary 

========================================================================================================== 

Install  8 Packages (+1 Dependent package) 

Total download size: 40 M 

Installed size: 279 M 

Downloading 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  00:00:01 

Running transaction check 

Running transaction test 

Transaction test succeeded 

Running 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                                                  9/9 

Installed:  

  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_0 

Dependency Installed:  

  perl-DBD-MySQL.x86_64 0:4.023-5.el7 

Complete! 

[root@localhost ~]# systemctl start mariadb.service 

[root@localhost ~]# systemctl enable mariadb.service 

ln -s '/usr/lib/systemd/system/mariadb.service' '/etc/systemd/system/multi-user.target.wants/mariadb.servi                      

ce' 

[root@localhost ~]# mysql 

Welcome to the MariaDB monitor.  Commands end with ; or \g. 

Your MariaDB connection id is 2 

Server version: 5.5.37-MariaDB MariaDB Server 

Copyright (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 106

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