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使用Haproxy对MariaDB做负载均衡
服务器环境:
安装
vim /etc/apt/sources.list.d/mariadb.list # 添加以下两句 deb http://mirror.yongbok.net/mariadb/repo/5.5/ubuntu precise main deb-src http://mirror.yongbok.net/mariadb/repo/5.5/ubuntu precise main apt-key adv --recv-keys --keyserver keyserver.ubuntu.com 0xcbcb082a1bb943db apt-get update apt-get install mariadb-server-5.5
/etc/mysql/my.cnf
多实例配置文件:3306,3307,3308
[mysqld_multi] mysqld = /usr/bin/mysqld_safe mysqladmin = /usr/bin/mysqladmin user = root # 指定用于启动、停止mysql实例的用户 log = /var/log/mysql/mysqld_multi.log [client] port = 3306 socket = /var/run/mysql/mysql.sock default-character-set = utf8 [mysqld3306] port = 3306 socket = /var/run/mysql/mysql.sock pid-file = /var/run/mysql/mysql.pid datadir = /var/lib/mysql/3306 skip-external-locking key_buffer_size = 16M max_allowed_packet = 1M table_open_cache = 64 sort_buffer_size = 512K net_buffer_length = 8K read_buffer_size = 256K read_rnd_buffer_size = 512K myisam_sort_buffer_size = 8M default-storage-engine = MyISAM character-set-server = utf8 skip-name-resolve collation-server = utf8_general_ci log-error = /var/log/mysql/mysqld-error.log log-slow-admin-statements long-query-time = 3 slow-query-log slow-query-log-file = /var/log/mysql/mysqld-slow.log innodb_buffer_pool_size=1G innodb_additional_mem_pool_size=20M max_connections = 1000 tmpdir = /tmp/ server-id = 2 log-slave-updates log-bin = mysql-bin binlog_format = mixed relay_log = mysql-relay-bin replicate-do-db = wordpress replicate-ignore-db = mysql replicate-ignore-db = information_schema replicate-ignore-db = performance_schema replicate-ignore-db = test [mysqldump] quick max_allowed_packet = 16M [mysqld3307] port = 3307 socket = /var/run/mysql/mysql-3307.sock pid-file = /var/run/mysql/mysql-3307.pid datadir = /var/lib/mysql/3307 skip-external-locking key_buffer_size = 16M max_allowed_packet = 1M table_open_cache = 64 sort_buffer_size = 512K net_buffer_length = 8K read_buffer_size = 256K read_rnd_buffer_size = 512K myisam_sort_buffer_size = 8M default-storage-engine = MyISAM character-set-server = utf8 skip-name-resolve collation-server = utf8_general_ci log-error = /var/log/mysql/mysqld-error-3307.log log-slow-admin-statements long-query-time = 3 slow-query-log slow-query-log-file = /var/log/mysql/mysqld-slow-3307.log innodb_buffer_pool_size=1G innodb_additional_mem_pool_size=20M max_connections = 1000 tmpdir = /tmp/ server-id = 2 log-slave-updates log-bin = mysql-bin binlog_format = mixed relay_log = mysql-relay-bin replicate-do-db = futurestar replicate-do-db = verywx replicate-ignore-db = mysql replicate-ignore-db = information_schema replicate-ignore-db = performance_schema replicate-ignore-db = test [mysqldump] quick max_allowed_packet = 16M [mysqld3308] port = 3308 socket = /var/run/mysql/mysql-3308.sock pid-file = /var/run/mysql/mysql-3308.pid datadir = /var/lib/mysql/3308 skip-external-locking key_buffer_size = 16M max_allowed_packet = 1M table_open_cache = 64 sort_buffer_size = 512K net_buffer_length = 8K read_buffer_size = 256K read_rnd_buffer_size = 512K myisam_sort_buffer_size = 8M default-storage-engine = MyISAM character-set-server = utf8 skip-name-resolve collation-server = utf8_general_ci log-error = /var/log/mysql/mysqld-error-3308.log log-slow-admin-statements long-query-time = 3 slow-query-log slow-query-log-file = /var/log/mysql/mysqld-slow-3308.log innodb_buffer_pool_size=1G innodb_additional_mem_pool_size=20M max_connections = 1000 tmpdir = /tmp/ server-id = 2 log-slave-updates log-bin = mysql-bin binlog_format = mixed relay_log = mysql-relay-bin replicate-do-db = futurestar replicate-do-db = verywx replicate-ignore-db = mysql replicate-ignore-db = information_schema replicate-ignore-db = performance_schema replicate-ignore-db = test [mysqldump] quick max_allowed_packet = 16M [mysql] socket = /var/run/mysql/mysql.sock auto-rehash default-character-set = utf8 [myisamchk] key_buffer_size = 20M sort_buffer_size = 20M read_buffer = 2M write_buffer = 2M [mysqlhotcopy] interactive-timeout
初始化数据库文件:
mysql_install_db --datadir=/var/lib/mysql/3306 --user=mysql mysql_install_db --datadir=/var/lib/mysql/3307 --user=mysql mysql_install_db --datadir=/var/lib/mysql/3308 --user=mysql
启动数据库:
mysqld_multi start 3306 mysqld_multi start 3307 mysqld_multi start 3308
查看启动情况:
netstat -tunlp | grep -E ‘(3306|3307|3308)‘
安装Haporxy
apt-get install haproxy
然后vim etc/default/haproxy
修改 ENABLED=0 -> ENABLED=1 保存。
修改haproxy配置文件:
vim /etc/haproxy/haproxy.cfg
# this config needs haproxy-1.1.28 or haproxy-1.2.1
global
log 127.0.0.1 local0
log 127.0.0.1 local1 notice
#log loghost local0 info
maxconn 4096
#chroot /usr/share/haproxy
user haproxy
group haproxy
daemon
#debug
#quiet
defaults
log global
mode http
#option httplog
option dontlognull
retries 3
option redispatch
maxconn 2000
contimeout 5000
clitimeout 50000
srvtimeout 50000
listen mysql 0.0.0.0:6666
mode tcp
option mysql-check user root
balance roundrobin
server mysql_1 127.0.0.1:3306 weight 1 check inter 1s rise 2 fall 5
server mysql_2 127.0.0.1:3307 weight 1 check inter 1s rise 2 fall 5
server mysql_3 127.0.0.1:3308 weight 1 check inter 1s rise 2 fall 5
listen stats
mode http
bind 0.0.0.0:8888
stats enable
stats uri /dbs
stats realm Global\ statistics
stats auth admin:admin
errorfile 400 /etc/haproxy/errors/400.http
errorfile 403 /etc/haproxy/errors/403.http
errorfile 408 /etc/haproxy/errors/408.http
errorfile 500 /etc/haproxy/errors/500.http
errorfile 502 /etc/haproxy/errors/502.http
errorfile 503 /etc/haproxy/errors/503.http
errorfile 504 /etc/haproxy/errors/504.http
执行命令:
/etc/init.d/haproxy start
测试结果:
查看haproxy监控页面:
配置成功。
本文出自 “宅鸟乐园” 博客，请务必保留此出处http://birdinroom.blog.51cto.com/7740375/1408525
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