1 Overview
mysql is a relational database.
mysql branch - mysql ( itself ) - 2008 before and after the SUN acquisition of SUN and later by oracle takeover
System Integration - do anything (- set of solutions )
mariadb mysql After the acquisition, the authors database in order to avoid monopoly, the author based mysql earlier versions developed mariadb
percona-server in Europe, specifically mysql write manuals database,
postgre SQL himself that he is a relational data path of a company the industry leader
oracle of the most popular database
mssql Microsoft database
2, mariadb installation
(1) Create a user
[root@localhost ~]# groupadd mysql [root@localhost ~]# useradd -r -g mysql -s /sbin/nologin mysql
(2) Unpack and install
[root@localhost ~]# tar xf mariadb-5.5.65-linux-systemd-x86_64.gz [root@localhost ~]# mv mariadb-5.5.65-linux-systemd-x86_64 /usr/local/mysql
(3) Edit my.cnf file
[root@localhost mysql]# cp support-files/my-small.cnf /etc/my.cnf cp: overwrite ‘/etc/my.cnf’? y [root@localhost mysql]# vim /etc/my.cnf
[mysqld] port = 3306 socket = /tmp/mysql.sock skip-external-locking key_buffer_size = 16K max_allowed_packet = 1M table_open_cache = 4 sort_buffer_size = 64K read_buffer_size = 256K read_rnd_buffer_size = 256K net_buffer_length = 2K thread_stack = 240K basedir = /usr/local/mysql datadir = /usr/local/mysql/data innodb_file_per_table=on skip_name_resolve = on
#给mysql用户权限
[root@localhost mysql]# chown -R mysql.mysql /usr/local/mysql/ [root@localhost mysql]# chmod -R 755 /usr/local/mysql/
Mysql initialization
[root@localhost mysql]# /usr/local/mysql/scripts/mysql_install_db --user=mysql Installing MariaDB/MySQL system tables in '/usr/local/mysql/data' ... 190910 12:38:06 [Note] /usr/local/mysql/bin/mysqld (mysqld 5.5.65-MariaDB) starting as process 12547 ... OK Filling help tables... 190910 12:38:06 [Note] /usr/local/mysql/bin/mysqld (mysqld 5.5.65-MariaDB) starting as process 12556 ... OK
Add the mysql service to the init.d
[root@localhost mysql]# cd support-files/ [root@localhost support-files]# cp -a mysql.server /etc/init.d/mysqld
启动mysql [root@localhost support-files]# /etc/init.d/mysqld start Starting MariaDB.190910 12:40:15 mysqld_safe Logging to '/usr/local/mysql/data/localhost.localdomain.err'. 190910 12:40:15 mysqld_safe Starting mysqld daemon with databases from /usr/local/mysql/data . SUCCESS!