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 = MariaDB
baseurl = http://yum.mariadb.org/5.5/centos7-amd64
gpgkey=https://yum.mariadb.org/RPM-GPG-KEY-MariaDB
gpgcheck=1

[mariadb]
#  Official source 10.1
name = MariaDB
baseurl = http://yum.mariadb.org/10.1/centos7-amd64
gpgkey=https://yum.mariadb.org/RPM-GPG-KEY-MariaDB
gpgcheck=1

[mariadb]
#  Ali's source 10.4
name = MariaDB
baseurl = https://mirrors.aliyun.com/mariadb/yum/10.4/centos7-amd64/
gpgkey=https://mirrors.aliyun.com/mariadb/yum/RPM-GPG-KEY-MariaDB
gpgcheck=1

 preservation , sign out 

2. Clear cache , Load the configuration

yum clean all
yum 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=utf8
init-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 mysql
mkdir -p /tmp/mysqld
cd /tmp/mysqld
rm -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