Installation and configuration of MariaDB

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MariaDB Installation and configuration

( I installed the chicken with ALI source )

MariaDB yes MySQL A branch of , Maintained by the open source community , use GPL licensing , Fully compatible with MySQL.

1. Install the corresponding source

vi  /etc/yum.repos.d/MariaDB.repo#  Fill in the following （3 Choose one , I chose aliyuan ）[mariadb]# http://downloads.mariadb.org/mariadb/repositories/（ Official source 5.5）name = MariaDBbaseurl = http://yum.mariadb.org/5.5/centos7-amd64gpgkey=https://yum.mariadb.org/RPM-GPG-KEY-MariaDBgpgcheck=1[mariadb]#  Official source 10.1name = MariaDBbaseurl = http://yum.mariadb.org/10.1/centos7-amd64gpgkey=https://yum.mariadb.org/RPM-GPG-KEY-MariaDBgpgcheck=1[mariadb]#  Ali's source 10.4name = MariaDBbaseurl = https://mirrors.aliyun.com/mariadb/yum/10.4/centos7-amd64/gpgkey=https://mirrors.aliyun.com/mariadb/yum/RPM-GPG-KEY-MariaDBgpgcheck=1 preservation , sign out 

2. Clear cache , Load the configuration

yum clean allyum makecache

3. install mariadb

（ Ali source mariadb The package name is lowercase , The official source is capitalized ）

#  official ：yum install -y MariaDB-server MariaDB-client#  Ali ：yum install -y mariadb-server mariadb 

4. start-up mariadb

systemctl start mariadb

4-1. relevant MariaDB An admin command

#  restart systemctl restart mariadb#  stop it systemctl stop mariadb#  Boot from boot systemctl enable mariadb

5. see mariadb process

netstat -ntlp | grep 3306        or netstat -ntlp | grep mysql    

6.MariaDB Database initialization

mysql_secure_installation

7. Initialize test login

mysql  -uroot -p             # Access to database 

8.MariaDB Set up utf8 code ( Add... According to actual needs )

vi /etc/my.cnf# Enter the following ：[mysqld]character-set-server=utf8init-connect='SET NAMES utf8'collation-server=utf8_unicode_ci

9.MariaDB Simple use

1） Change Password

set password = PASSWORD('[email protected]');     #  Set the password to [email protected]

2）mysql Common commands （ part ）

desc  Table name                                   #  View table structure create database  Database name ;                   #  Create database create table  Table name ;                         #  Create data table drop database  Database name ;                     #  Delete database show create database  Database database name ;            #  See how to create a database show create table  Table name ;                    #  See how to create a table 

10.MariaDB Database backup and recovery

Specific steps ： Backup , recovery

precondition

create database one;create  database two;show databases;\q                                       # sign out mysqlmkdir -p /tmp/mysqldcd /tmp/mysqldrm -rf *

Choose according to your needs

1-1） Back up all databases

mysqldump -u root -p --all-databases > /tmp/mysqld/db.dump       # Back up all databases # Input password ls                                      # You can view the new db.dump file ( This is the file for database backup ).

1-2） Back up a single database

mysqldump -u root -p one > /tmp/mysqld/one.dump       # The backup name is one The database of # Input password ls                                      # You'll see the new one one.dump file .

2), Enter into MariaDB, Delete database , And look at the results

mysql -uroot -p#  Input password drop database one;drop database one;

Choose according to your needs

3-1） Recover all databases

mysql -uroot -p < /tmp/mysqld/db.dump     

3-2） The recovery name is one The database of

mysql -uroot -p < /tmp/mysqld/one.dump

Link to the original text ：https://blog.csdn.net/weixin_51202460/article/details/123672061