Ubuntu下安装mariaDB 10.1 集群

【环境】
Ubuntu 14.04
MariaDB 10.1 stable

【机器】
host-1: 10.0.5.11
host-2: 10.0.5.12
host-3: 10.0.5.13

<以下操作为host-1 2 3都有>
MariaDB官方安装向导：
https://downloads.mariadb.org/mariadb/repositories/#mirror=yamagata-university
安装MariaDB 10.1

sudo apt-get install software-properties-common
sudo apt-key adv --recv-keys --keyserver hkp://keyserver.ubuntu.com:80 0xcbcb082a1bb943db
sudo add-apt-repository 'deb [arch=amd64,i386,ppc64el] http://ftp.yz.yamagata-u.ac.jp/pub/dbms/mariadb/repo/10.1/ubuntu trusty main'

sudo apt-get update
sudo apt-get install rsync mariadb-server

注意：
1.安装过程会提示输入MariaDB的root密码
2.MariaDB 10.1及之后的版本默认自带galera cluster,不需要另行安装。

配置MariaDB集群用户：

GRANT USAGE ON *.* to tt@'%' IDENTIFIED BY 'tt123';  
GRANT ALL PRIVILEGES on *.* to tt@'%';  
GRANT USAGE ON *.* to tt@'localhost' IDENTIFIED BY 'tt123';  
GRANT ALL PRIVILEGES on *.* to tt@'localhost';  
flush privileges;

修改/etc/MysqL/my.cnf文件中的[galera]部分如下：

[galera]
# Mandatory settings
wsrep_on=ON
wsrep_provider=/usr/lib/galera/libgalera_smm.so
wsrep_cluster_address="gcomm://10.0.5.11,10.0.5.12,10.0.5.13"
wsrep_sst_auth=tt:tt123
binlog_format=row
default_storage_engine=InnoDB
innodb_autoinc_lock_mode=2
#
# Allow server to accept connections on all interfaces.
#
bind-address=0.0.0.0
#
# Optional setting
#wsrep_slave_threads=1
#innodb_flush_log_at_trx_commit=0

注意：以上操作在host-1 2 3中均要执行

启动测试：
确保所有节点MysqL服务为stop状态
host-1执行：service MysqL start --wsrep-new-cluster
host-2执行：service MysqL start
host-3执行：service MysqL start

验证集群是否成功：
在host-1中执行：

MysqL -u root -e 'SELECT VARIABLE_VALUE as "cluster size" FROM informatION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME="wsrep_cluster_size"' -p<password>

如显示：

+--------------+
| cluster size | +--------------+
| 3 | +--------------+

如果数字为3则表示集群成功，如为1则表示失败。