OpenStack Mariadb数据库HA

192.168.17.111  demo.open-stack.cn

192.168.17.132  controller1 controller1.open-stack.cn

192.168.17.151  controller2 controller2.open-stack.cn

192.168.17.138  controller3 controller3.open-stack.cn

1、配置YUM源

[root@controller1 yum.repos.d]# vim Mariadb.repo

[mariadb]

name = MariaDB

baseurl = http://yum.mariadb.org/10.1/centos7-amd64

enabled = 1

gpgcheck = 0

[root@controller1 ~]# scp /etc/yum.repos.d/mariadb.repo controller2:/etc/yum.repos.d/mariadb.repo                                       100%  103     0.1KB/s   00:00

[root@controller1 ~]# scp /etc/yum.repos.d/mariadb.repo controller3:/etc/yum.repos.d

2、安装mariadb

# yum install mariadb-server mariadb-client galera xinetd rsync -y

# systemctl start mariadb

# systemctl status mariadb

# mysql_secure_installation

3、配置mariadb

[root@controller1 ~]# vim /etc/my.cnf.d/server.cnf

# Galera Cluster Configuration

[galera]

# Mysql Configuration

binlog_format = ROW

max_connections = 10000

bind-address = 192.168.17.132

# Galera Cluster Configuration

wsrep_provider = /usr/lib64/galera/libgalera_smm.so

wsrep_cluster_name = "OpenStack"

wsrep_cluster_address = "gcomm://192.168.17.132,192.168.17.151,192.168.17.138"

wsrep_node_name = controller1

wsrep_node_address = 192.168.17.132

wsrep_sst_method = rsync

wsrep_on = ON

wsrep_slave_threads = 1

# InnoDB Configuration

default_storage_engine = InnoDB

innodb_autoinc_lock_mode = 2

innodb_flush_log_at_trx_commit = 0

innodb_buffer_pool_size = 122M

将文件复制到controller2和controller3，文中IP和节点名修改成对应节点的

# vim /usr/lib/systemd/system/mariadb.service

LimitNOFILE=10000

LimitNPROC=10000

[root@server1 ~]# systemctl stop mariadb

Warning: mariadb.service changed on disk. Run 'systemctl daemon-reload' to reload units.

[root@server1 ~]# systemctl daemon-reload

[root@server1 ~]# systemctl stop mariadb

先将三个节点Mariadb停止

启动主节点

[root@server1 ~]# /usr/libexec/mysqld --wsrep-new-cluster --user=root &

再启动其它节点

[root@server2 ~]# systemctl start mariadb.service

[root@controller1 ~]# mysql -uroot -p

MariaDB [(none)]> show status like 'wsrep%';

| wsrep_cluster_conf_id        | 3                                                           |

| wsrep_cluster_size           | 3 

| wsrep_cluster_status         | Primary

| wsrep_incoming_addresses     | 192.168.17.132:3306,192.168.17.138:3306,192.168.17.151:3306

| wsrep_local_state_comment    | Synced

| wsrep_provider_name          | Galera

| wsrep_ready                  | ON

在Controller1创建一个数据库测试

MariaDB [(none)]> create database galera;

Query OK, 1 row affected (0.02 sec)

在controller2上验证

[root@controller2 ~]# mysql -uroot -p

MariaDB [(none)]> show databases;

+--------------------+

| Database           |

+--------------------+

| galera             |

| information_schema |

| mysql              |

| performance_schema |

+--------------------+

在controller3上验证

[root@controller3 ~]# mysql -uroot -p

MariaDB [(none)]> show databases;

+--------------------+

| Database           |

+--------------------+

| galera             |

| information_schema |

| mysql              |

| performance_schema |

+--------------------+

4 rows in set (0.00 sec)

本文转自 OpenStack2015 51CTO博客，原文链接：http://blog.51cto.com/andyliu/1901020，如需转载请自行联系原作者