1 , MariaDB database backup script
( 1) Introduction to MariaDB database
Starting from centos7.0, the mysql database that comes with the system has been changed to the mariadb database.
MariaDB database overview: MariaDB database management system is a branch of MySQL and is mainly maintained by the open source community. The purpose of using GPL license MariaDB is to be fully compatible with MySQL, including API and command line, so that it can easily become a substitute for MySQL.
After Oracle acquired MySQL, there was a potential risk of closing MySQL to its source, so the community adopted branching methods to avoid this risk. At present, many large Internet users and Linux distributors have abandoned MySQL and switched to the MariaDB camp. MariaDB is currently the most concerned MySQL database derivative and is also regarded as an alternative to the open source database MySQL
( 2) centos7.3 install mariadb
#installation
[root@test ~]# yum -y install mariadb mariadb-server
#View installation version information
[root@test ~]# rpm -qa |grep mariadb mariadb-libs-5.5.68-1.el7.x86_64 mariadb-server-5.5.68-1.el7.x86_64 mariadb-5.5.68-1.el7.x86_64
#Start mariadb
[root@test ~]# systemctl start mariadb
#Set the mysql database root password
[root@test ~]# mysqladmin -u root password "123456"
#Log in to mysql and create the book library, create a user table in the book library, insert a record, the field id field value is 1.
[root@test ~]# mysql -u root -p MariaDB [(none)]> show databases; MariaDB [(none)]> create database book; MariaDB [(none)]> use book; MariaDB [book]> create table user(id int); MariaDB [book]> insert into user values(1); MariaDB [book]> select * from user; +------+ | id | +------+ | 1 | +------+ 1 row in set (0.00 sec) MariaDB [book]> commit； MariaDB [book]>quit
( 3) Regular backup script
[root@test home]# cat mysql-back.sh
#/bin/bash
# msyql back
# YX
# 2020.11.21
backdir=/home/mysql/back/`date +"%Y-%m-%d"`
mysqldb=book
mysqluser=root
mysqlpassword=123456 #You
must use root user, use $UID to judge, root user uid is 0.
if [$UID -ne 0 ]; then
echo "YOU need root user"
exit
fi #Judgment of
backup files Whether the directory exists, create
if [! -D $backdir ]; then
mkdir -p $backdir
else
echo "this dir is exit"
exit
fi
#mysql backup
/usr/bin/mysqldump -u$mysqluser -p$mysqlpassword $mysqldb >$backdir/${mysqldb}_`date +%Y-%m-%d-%H-%S`.sql;
cd $backdir;
tar -zcvf ${mysqldb}_tar.gz *.sql;
find $backdir -type f -name *.sql -exec rm -rf {} \;
echo "mysql backup successfully"
[root@test home]# sh mysql-back.sh
book_2020-11-21-23-43.sql
mysql backup successfully
[root@test home]# ls /home/mysql/back/2020-11-21/
book_tar.gz
[root@test home]#
Personal public number:
