mysql高可用方案之集群(cluster)
1.实验环境
我用三台服务器搭建mysql cluster环境,sql节点和数据节点在同一服务器上,管理节点单独一台.
cluster node1:192.168.1.102 data node1:192.168.1.102
cluster node2:192.168.1.104 data node2:192.168.1.104
manager node:192.168.1.19
OS:centos 6.4 64位
2.在sql节点和数据节点安装mysql cluster(注:cluster节点1和节点2是一样的)
cluster node1:
[root@node1 home]# wget http://mirrors.sohu.com/mysql/MySQL-Cluster-7.3/mysql-cluster-gpl-7.3.6-linux-glibc2.5-x86_64.tar.gz
[root@node1 home]# tar xvf mysql-cluster-gpl-7.3.6-linux-glibc2.5-x86_64.tar.gz
[root@node1 home]# mv mysql-cluster-gpl-7.3.6-linux-glibc2.5-x86_64 /usr/local/mysql-cluster-gpl-7.3.6/
[root@node1 home]# cd /usr/local/
[root@node1 local]# groupadd mysql
[root@node1 local]# useradd -r -M -s /sbin/nologin mysql
[root@node1 local]# chown -R root:mysql mysql-cluster-gpl-7.3.6/
[root@node1 local]# chown -R mysql:mysql mysql-cluster-gpl-7.3.6/data/
[root@node1 scripts]# ./mysql_install_db --user=mysql --datadir=/usr/local/mysql-cluster-gpl-7.3.6/data --basedir=/usr/local/mysql-cluster-gpl-7.3.6
[root@node1 scripts]# cd ../bin/
[root@node1 bin]# cp -a ../support-files/mysql.server /etc/init.d/mysqld
[root@node1 bin]# chkconfig --add mysqld
[root@node1 bin]# chkconfig mysqld on
[root@node1 bin]# cp -a ../my.cnf /etc/my.cnf
[root@node1 bin]# vim /etc/my.cnf
[mysqld]
basedir = /usr/local/mysql-cluster-gpl-7.3.6 --数据库的安装路径
datadir = /usr/local/mysql-cluster-gpl-7.3.6/data --数据库的数据目录
port = 3306
ndbcluster --集群服务
ndb-connectstring=192.168.1.19 --管理节点的IP地址
[mysql_cluster]
ndb-connectstring=192.168.1.19 --管理节点的IP地址
[root@node1 bin]# ./mysqld_safe --user=mysql
[root@node1 bin]# /etc/init.d/mysqld restart
ERROR! MySQL server PID file could not be found!
Starting MySQL...................................... SUCCESS!
[root@node1 bin]# netstat -anp |grep mysql
tcp 0 0 :::3306 :::* LISTEN 1982/mysqld
unix 2 [ ACC ] STREAM LISTENING 48481 1982/mysqld /tmp/mysql.sock[root@node1 bin]# /etc/init.d/iptables stop
iptables: Setting chains to policy ACCEPT: filter [ OK ]
iptables: Flushing firewall rules: [ OK ]
iptables: Unloading modules: [ OK ]
[root@node1 bin]#
cluster node2:
注:节点2上的mysql cluster安装和节点1是一样的,配置文件也是一样
3.管理节点
[root@db2 home]# wget http://mirrors.sohu.com/mysql/MySQL-Cluster-7.3/mysql-cluster-gpl-7.3.6-linux-glibc2.5-x86_64.tar.gz
[root@db2 home]# tar xvf mysql-cluster-gpl-7.3.6-linux-glibc2.5-x86_64.tar.gz
[root@db2 home]# mv mysql-cluster-gpl-7.3.6-linux-glibc2.5-x86_64 /usr/local/mysql-cluster-gpl-7.3.6/
[root@db2 home]# cd /usr/local/
[root@db2 local]# groupadd mysql
[root@db2 local]# useradd -r -M -s /sbin/nologin mysql
[root@db2 local]# chown -R root:mysql mysql-cluster-gpl-7.3.6/
[root@db2 local]# chown -R mysql:mysql mysql-cluster-gpl-7.3.6/data/
[root@db2 scripts]# ./mysql_install_db --user=mysql --datadir=/usr/local/mysql-cluster-gpl-7.3.6/data --basedir=/usr/local/mysql-cluster-gpl-7.3.6
[root@db2 scripts]# cd ../bin/
[root@db2 bin]# cp -a ../my.cnf /etc/my.cnf
[root@db2 bin]# vim /etc/my.cnf
[mysqld]
basedir = /usr/local/mysql-cluster-gpl-7.3.6
datadir = /usr/local/mysql-cluster-gpl-7.3.6/data
port = 3306
[root@db2 home]# /etc/init.d/iptables stop
iptables: Flushing firewall rules: [ OK ]
iptables: Setting chains to policy ACCEPT: filter [ OK ]
iptables: Unloading modules: [ OK ]
[root@db2 home]# mkdir /var/lib/mysql-cluster/
[root@db2 home]# vim /var/lib/mysql-cluster/config.ini --配置文件中注意大小写
[ndbd default]
NoOfReplicas=1
[tcp default]
portnumber=2202
[ndb_mgmd]
Id=1
Hostname=192.168.1.19
datadir=/usr/local/mysql-cluster-gpl-7.3.6/data
[ndbd]
Id=2
Hostname=192.168.1.102
datadir=/usr/local/mysql-cluster-gpl-7.3.6/data/
[ndbd]
Id=3
Hostname=192.168.1.104
datadir=/usr/local/mysql-cluster-gpl-7.3.6/data/
[MYSQLD]
Id=4
Hostname=192.168.1.102
[MYSQLD]
Id=5
Hostname=192.168.1.104
[root@db2 bin]# ./ndb_mgmd --configdir=/var/lib/mysql-cluster/ -f /var/lib/mysql-cluster/config.ini --initial --启动管理节点服务
MySQL Cluster Management Server mysql-5.6.17 ndb-7.3.6
[root@db2 bin]# netstat -anp | grep ndb
tcp 0 0 0.0.0.0:1186 0.0.0.0:* LISTEN 3569/ndb_mgmd
tcp 0 0 192.168.1.105:1186 192.168.1.102:45799 ESTABLISHED 3569/ndb_mgmd
tcp 0 0 192.168.1.105:1186 192.168.1.104:46933 ESTABLISHED 3569/ndb_mgmd
tcp 0 0 127.0.0.1:1186 127.0.0.1:55347 ESTABLISHED 3569/ndb_mgmd
tcp 0 0 192.168.1.105:1186 192.168.1.102:45800 ESTABLISHED 3569/ndb_mgmd
tcp 0 0 192.168.1.105:1186 192.168.1.102:45801 ESTABLISHED 3569/ndb_mgmd
tcp 0 0 127.0.0.1:55347 127.0.0.1:1186 ESTABLISHED 3569/ndb_mgmd
unix 3 [ ] STREAM CONNECTED 20977 3569/ndb_mgmd
unix 3 [ ] STREAM CONNECTED 20976 3569/ndb_mgmd
[root@db2 bin]#
4.启动cluster节点和数据库服务
cluster node1:
[root@node1 bin]# ./ndbd --initial
2014-10-10 09:59:20 [ndbd] INFO -- Angel connected to '192.168.1.19:1186'
2014-10-10 09:59:20 [ndbd] INFO -- Angel allocated nodeid: 2
[root@node1 bin]# ../support-files/mysql.server start
Starting MySQL SUCCESS!
[root@node1 bin]#
cluster node2:
[root@node2 bin]# ./ndbd --initial
2014-10-10 10:01:24 [ndbd] INFO -- Angel connected to '192.168.1.19:1186'
2014-10-10 10:01:24 [ndbd] INFO -- Angel allocated nodeid: 3
[root@node2 bin]# ../support-files/mysql.server start
Starting MySQL SUCCESS!
[root@node2 bin]#
管理节点查看信息:
[root@db2 bin]# ./ndb_mgm
-- NDB Cluster -- Management Client --
ndb_mgm> show
Connected to Management Server at: localhost:1186
Cluster Configuration
---------------------
[ndbd(NDB)] 2 node(s)
id=2 @192.168.1.102 (mysql-5.6.17 ndb-7.3.6, Nodegroup: 0, *)
id=3 @192.168.1.104 (mysql-5.6.17 ndb-7.3.6, Nodegroup: 1)
[ndb_mgmd(MGM)] 1 node(s)
id=1 @192.168.1.19 (mysql-5.6.17 ndb-7.3.6)
[mysqld(API)] 2 node(s)
id=4 @192.168.1.102 (mysql-5.6.17 ndb-7.3.6)
id=5 @192.168.1.102 (mysql-5.6.17 ndb-7.3.6)
ndb_mgm>