CentOS用yum安装、配置、升级、初始化5.5升级10.0MariaDB

1.创建/etc/yum.repos.d/MariaDB.repo文件，这里用到了刚刚发布正式版的10.0

[mariadb]name = MariaDBbaseurl = http://yum.mariadb.org/10.0/centos6-amd64/gpgkey=https://yum.mariadb.org/RPM-GPG-KEY-MariaDBgpgcheck=1

2.关闭并卸载旧版本的mariadb，安装新版本的mariadb。

systemctl stop mariadbyum remove mariadb-server mariadb mariadb-libsyum clean allyum install MariaDB-server MariaDB-client

3.自定义数据目录和服务端口，移除默认的数据目录，创建新的数据目录。

rm -rf /var/lib/mysqlmkdir /var/data/db/mariadb

4.修改配置文件/etc/my.cnf.d/mysql-clients.cnf，重点是[client]，其他的可以参考

[client]port        = 3307socket      = /var/data/db/mariadb/mysql.sock[mysql]no-auto-rehash[mysqldump]quickmax_allowed_packet = 64M[myisamchk]key_buffer_size = 128Msort_buffer_size = 128Mread_buffer = 2Mwrite_buffer = 2M[mysqlhotcopy]interactive-timeout

5.修改配置文件/etc/my.cnf.d/server.cnf，这里的性能参数来自my-large.ini文件

[mysqld]port            = 3307datadir         = /var/data/db/mariadbsocket          = /var/data/db/mariadb/mysql.sockskip-external-lockingkey_buffer_size = 256Mmax_allowed_packet = 64Mtable_open_cache = 256sort_buffer_size = 1Mread_buffer_size = 1Mread_rnd_buffer_size = 4Mmyisam_sort_buffer_size = 64Mthread_cache_size = 8query_cache_size= 16Mthread_concurrency = 8log-bin=mysql-binbinlog_format=mixedserver-id   = 1

6.初始化数据

mysql_install_db --defaults-file=/etc/my.cnf --datadir=/var/data/db/mariadb/ --user=mysql

7.启动服务
systemctl restart mysql

8.设置ROOT密码
mysqladmin -u root password "8888888"

9.登陆mysql
mysql -uroot -p

10.授权root远程登录
root可从任何IP登陆，注意修改密码:'888888'

mysql>GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY '888888' WITH GRANT OPTION;mysql>FLUSH RIVILEGES;

root可从指定IP登陆，注意修改密码:'888888'、IP:'192.168.1.188'

mysql>GRANT ALL PRIVILEGES ON *.* TO 'root'@'192.168.1.188' IDENTIFIED BY '888888' WITH GRANT OPTION;mysql>FLUSH RIVILEGES;