【Mariadb】centos7搭建mariadb Galera集群

机器列表

关闭SELINUX

修改/etc/selinux/config文件中的SELINUX="" 为 disabled ，然后重启。

关闭防火墙

systemctl stop firewalld.service
systemctl disable firewalld.service

设置mariadb的yum源并安装（所有节点都要）

vi /etc/yum.repos.d/mariadb.repo

[mariadb]
name = MariaDB
baseurl = http://yum.mariadb.org/10.1/centos7-amd64 gpgkey=https://yum.mariadb.org/RPM-GPG-KEY-MariaDB
gpgcheck=1
enabled=0

yum --enablerepo=mariadb -y install MariaDB-server galera

配置 第一个 节点（192.168.88.104）

vi /etc/my.cnf.d/server.cnf

[galera]
# Mandatory settings
wsrep_on=ON
wsrep_provider=/usr/lib64/galera/libgalera_smm.so
wsrep_cluster_address=gcomm://
binlog_format=row
default_storage_engine=InnoDB
innodb_autoinc_lock_mode=2
bind-address=0.0.0.0

# add follows
# cluster name
wsrep_cluster_name="MariaDB_Cluster"
# own IP address（当前节点的IP）
wsrep_node_address="192.168.88.104"
# replication provider
wsrep_sst_method=rsync

启动集群：/bin/galera_new_cluster

配置 其它 节点(192.168.88.105)

vi /etc/my.cnf.d/server.cnf

[galera]
# Mandatory settings
wsrep_on=ON
wsrep_provider=/usr/lib64/galera/libgalera_smm.so

# specify all nodes in cluster(所有节点的IP，这里只有2台机器)
wsrep_cluster_address="gcomm://192.168.88.104,192.168.88.105"

binlog_format=row
default_storage_engine=InnoDB
innodb_autoinc_lock_mode=2
bind-address=0.0.0.0

# add follows
# cluster name
wsrep_cluster_name="MariaDB_Cluster"
# own IP address（当前节点的IP）
wsrep_node_address="192.168.88.105"
# replication provider
wsrep_sst_method=rsync

启动集群节点：systemctl start mariadb

测试集群状态

mysql -u root -p
show status like 'wsrep_%';
如果 "wsrep_local_state_comment" is "Synced" 则表明集群创建成功