centos7系统安装mysql（MariaDB）的教程

1.centos7现状：　　新系统无法直接使用yum install mysql-server来安装mysql（需要添加mysql yum源），因为已使用mariadb代替mysql。 2.安装mariadb：

[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 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 '

logout

exit

' at line 1

MariaDB [(none)]> 

exit

Bye

[root@localhost ~]

# systemctl enable mariadb.service

[root@localhost ~]

# mysql

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

Your MariaDB connection 

id

is 3

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)]> show databases;

+--------------------+

| Database      |

+--------------------+

| information_schema |

| mysql       |

| performance_schema |

| 

test

       

|

+--------------------+

rows 

in

set

(0.00 sec)

 

MariaDB [(none)]> use 

test

Database changed

MariaDB [

test

]> show tables;

Empty 

set

(0.00 sec)

 

MariaDB [

test

]> 

exit

Bye

[root@localhost ~]

# mysql_secure_installation

/usr/bin/mysql_secure_installation

: line 379: find_mysql_client: 

command

not found

 

NOTE: 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 current

password 

for

the root user. If you've just installed MariaDB, and

you 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 MariaDB

root user without the proper authorisation.

 

Set root password? [Y

/n

] y

New password:

Re-enter new password:

Password updated successfully!

Reloading privilege tables..

... Success!

   

By default, a MariaDB installation has an anonymous user, allowing anyone

to log into MariaDB without having to have a user account created 

for

them. This is intended only 

for

testing, and to 

make

the installation

go a bit smoother. You should remove them before moving into a

production environment.

 

Remove anonymous 

users

? [Y

/n

] y

... Success!

 

Normally, root should only be allowed to connect from 

'localhost'

. This

ensures 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 can

access. This is also intended only 

for

testing, and should be removed

before 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 far

will 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 MariaDB

installation should now be secure.

 

Thanks 

for

using MariaDB!

[root@localhost ~]

# mysql -uroot -p

Enter password:

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

Your MariaDB connection 

id

is 15

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)]> show databases;

+--------------------+

| Database      |

+--------------------+

| information_schema |

| mysql       |

| performance_schema |

| zbphp.com     |

+--------------------+

rows 

in

set

(0.00 sec)

 

MariaDB [(none)]>