高可用的mysql galera集群部署

一：集群机器介绍四台机器： 1.balance节点安装haproxy和keepalived 机器名： balance01 172.18.48.1 balance02 172.18.48.2 2.galera节点安装mysql数据库和galera 机器名： galera01 172.18.48.3 galera02 172.18.48.4 操作系统：ubuntu14.04 server64

注：每台机器/etc/hosts上要写上涉及到的所有对应的ip和主机名

二：balance节点安装

balance节点安装配置haproxy和keepalived

1./etc/sysctl.conf添加 vim /etc/sysctl.conf net.ipv4.ip_nonlocal_bind=1

2.加载sysctl.conf sysctl -p

3.安装haproxy和keepalived apt-get install -y keepalived haproxy

4.创建/var/lib/haproxy mkdir /var/lib/haproxy

5.把/var/lib/haproxy权限改为root所有 chown root:root /var/lib/haproxy/

6.vim /etc/keepalived/keepalived.conf balance01添加如下： global_defs { notification_email { root@[YOUR_DOMAIN_NAME] } notification_email_from keepalived@[YOUR_DOMAIN_NAME] smtp_server localhost smtp_connect_timeout 30 router_id balance01 } vrrp_script haproxy { script "killall -0 haproxy" interval 2 weight 2 } vrrp_instance 50 { virtual_router_id 50 advert_int 1 priority 101 state MASTER interface eth0 virtual_ipaddress { 172.18.48.20 dev eth0 } track_script { haproxy } }

balance02如下： global_defs { notification_email { root@[YOUR_DOMAIN_NAME] } notification_email_from keepalived@[YOUR_DOMAIN_NAME] smtp_server localhost smtp_connect_timeout 30 router_id balance02 } vrrp_script haproxy { script "killall -0 haproxy" interval 2 weight 2 } vrrp_instance 50 { virtual_router_id 50 advert_int 1 priority 101 state MASTER interface eth0 virtual_ipaddress { 172.18.48.20 dev eth0 } track_script { haproxy } }

7.vim /etc/haproxy/haproxy.cfg

balance01上添加如下： global chroot /var/lib/haproxy daemon group haproxy log 172.18.48.1 local0 maxconn 4000 pidfile /var/run/haproxy.pid stats socket /var/lib/haproxy/stats user haproxy defaults log global maxconn 8000 option redispatch retries 3 timeout http-request 10s timeout queue 1m timeout connect 10s timeout client 1m timeout server 1m timeout check 10s listen mysql_cluster bind 172.18.48.20:3306 mode tcp balance roundrobin option mysql-check user root option tcpka server galera01 172.18.48.3:3306 server galera02 172.18.48.4:3306

balance02添加如下： global chroot /var/lib/haproxy daemon group haproxy log 172.18.48.2 local0 maxconn 4000 pidfile /var/run/haproxy.pid stats socket /var/lib/haproxy/stats user haproxy defaults log global maxconn 8000 option redispatch retries 3 timeout http-request 10s timeout queue 1m timeout connect 10s timeout client 1m timeout server 1m timeout check 10s listen mysql_cluster bind 172.18.48.20:3306 mode tcp balance roundrobin option mysql-check user root option tcpka server galera01 172.18.48.3:3306 server galera02 172.18.48.4:3306 8.balance节点修改/etc/default/haproxy ENABLED=1

9.启动keepalived和haproxy service keepalived restart service haproxy restart

三：galera节点安装

(一)安装MariaDB，所有galera节点

1.安装软件源 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 http://mirrors.hustunique.com/mariadb/repo/10.0/ubuntu trusty main'

2.安装MariaDB sudo apt-get update sudo apt-get install mariadb-server

(二)安装galera cluster，所有galera节点

1.安装软件安装源 apt-get install python-software-properties apt-key adv --recv-keys --keyserver keyserver.ubuntu.com 0xcbcb082a1bb943db add-apt-repository 'deb http://mirror3.layerjet.com/mariadb/repo/5.5/ubuntu precise main' apt-get update

2.安装galera包 DEBIAN_FRONTEND=noninteractive apt-get install -y rsync galera mariadb-galera-server 3.配置galera cluster /etc/mysql/conf.d/galera.cnf [mysqld] mysql settings binlog_format=ROW default-storage-engine=innodb innodb_autoinc_lock_mode=2 query_cache_size=0 query_cache_type=0 bind-address=0.0.0.0 galera settings wsrep_provider=/usr/lib/galera/libgalera_smm.so wsrep_cluster_name="my_wsrep_cluster" wsrep_cluster_address="gcomm://172.18.48.3,172.18.48.4" wsrep_sst_method=rsync 4.galera01和galera02关闭mysql galera01 service mysql stop galera02 service mysql stop 5.启动集群，第一个启动的节点要加上集群初始化命令，相当于主节点 galera01 service mysql start --wsrep-new-cluster galera02 service mysql start 6.检查集群规模 galera01 mysql -u root -e 'SELECT VARIABLE_VALUE as "cluster size" FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME="wsrep_cluster_size"' +--------------+ | cluster size | +--------------+ | 2 | +--------------+ 7.在galera上创建数据库，并授权允许远程访问 mysql>create database nova; mysql>GRANT ALL ON nova.* TO 'nova'@'%' IDENTIFIED BY 'password'; 四：balance节点和galera的弹性和容灾添加新节点时候直接重启服务即可，galera节点必须有一个主节点，即执行如下语句的节点： service mysql start --wsrep-new-cluster

来源：oschina

链接：https://my.oschina.net/u/1376768/blog/264139

标签

galera

HAproxy

keepalived

mysql