使用Haproxy对MariaDB做负载均衡_MySQL

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 maindeb-src http://mirror.yongbok.net/mariadb/repo/5.5/ubuntu precise mainapt-key adv --recv-keys --keyserver keyserver.ubuntu.com 0xcbcb082a1bb943dbapt-get updateapt-get install mariadb-server-5.5

[mysqld_multi]mysqld= /usr/bin/mysqld_safemysqladmin= /usr/bin/mysqladminuser= root # 指定用于启动、停止mysql实例的用户log = /var/log/mysql/mysqld_multi.log[client]port= 3306socket= /var/run/mysql/mysql.sockdefault-character-set = utf8[mysqld3306]port= 3306socket= /var/run/mysql/mysql.sockpid-file= /var/run/mysql/mysql.piddatadir = /var/lib/mysql/3306skip-external-lockingkey_buffer_size = 16Mmax_allowed_packet = 1Mtable_open_cache = 64sort_buffer_size = 512Knet_buffer_length = 8Kread_buffer_size = 256Kread_rnd_buffer_size = 512Kmyisam_sort_buffer_size = 8Mdefault-storage-engine= MyISAMcharacter-set-server= utf8skip-name-resolvecollation-server= utf8_general_cilog-error = /var/log/mysql/mysqld-error.loglog-slow-admin-statementslong-query-time = 3slow-query-logslow-query-log-file = /var/log/mysql/mysqld-slow.loginnodb_buffer_pool_size=1Ginnodb_additional_mem_pool_size=20Mmax_connections = 1000tmpdir= /tmp/server-id = 2log-slave-updateslog-bin = mysql-binbinlog_format = mixedrelay_log = mysql-relay-binreplicate-do-db= wordpressreplicate-ignore-db= mysqlreplicate-ignore-db= information_schemareplicate-ignore-db= performance_schemareplicate-ignore-db= test[mysqldump]quickmax_allowed_packet = 16M[mysqld3307]port= 3307socket= /var/run/mysql/mysql-3307.sockpid-file= /var/run/mysql/mysql-3307.piddatadir = /var/lib/mysql/3307skip-external-lockingkey_buffer_size = 16Mmax_allowed_packet = 1Mtable_open_cache = 64sort_buffer_size = 512Knet_buffer_length = 8Kread_buffer_size = 256Kread_rnd_buffer_size = 512Kmyisam_sort_buffer_size = 8Mdefault-storage-engine= MyISAMcharacter-set-server= utf8skip-name-resolvecollation-server= utf8_general_cilog-error = /var/log/mysql/mysqld-error-3307.loglog-slow-admin-statementslong-query-time = 3slow-query-logslow-query-log-file = /var/log/mysql/mysqld-slow-3307.loginnodb_buffer_pool_size=1Ginnodb_additional_mem_pool_size=20Mmax_connections = 1000tmpdir= /tmp/server-id = 2log-slave-updateslog-bin = mysql-binbinlog_format = mixedrelay_log = mysql-relay-binreplicate-do-db= futurestarreplicate-do-db= verywxreplicate-ignore-db= mysqlreplicate-ignore-db= information_schemareplicate-ignore-db= performance_schemareplicate-ignore-db= test[mysqldump]quickmax_allowed_packet = 16M[mysqld3308]port= 3308socket= /var/run/mysql/mysql-3308.sockpid-file= /var/run/mysql/mysql-3308.piddatadir = /var/lib/mysql/3308skip-external-lockingkey_buffer_size = 16Mmax_allowed_packet = 1Mtable_open_cache = 64sort_buffer_size = 512Knet_buffer_length = 8Kread_buffer_size = 256Kread_rnd_buffer_size = 512Kmyisam_sort_buffer_size = 8Mdefault-storage-engine= MyISAMcharacter-set-server= utf8skip-name-resolvecollation-server= utf8_general_cilog-error = /var/log/mysql/mysqld-error-3308.loglog-slow-admin-statementslong-query-time = 3slow-query-logslow-query-log-file = /var/log/mysql/mysqld-slow-3308.loginnodb_buffer_pool_size=1Ginnodb_additional_mem_pool_size=20Mmax_connections = 1000tmpdir= /tmp/server-id = 2log-slave-updateslog-bin = mysql-binbinlog_format = mixedrelay_log = mysql-relay-binreplicate-do-db= futurestarreplicate-do-db= verywxreplicate-ignore-db= mysqlreplicate-ignore-db= information_schemareplicate-ignore-db= performance_schemareplicate-ignore-db= test[mysqldump]quickmax_allowed_packet = 16M[mysql]socket= /var/run/mysql/mysql.sockauto-rehashdefault-character-set = utf8[myisamchk]key_buffer_size = 20Msort_buffer_size = 20Mread_buffer = 2Mwrite_buffer = 2M[mysqlhotcopy]interactive-timeout

mysql_install_db --datadir=/var/lib/mysql/3306 --user=mysqlmysql_install_db --datadir=/var/lib/mysql/3307 --user=mysqlmysql_install_db --datadir=/var/lib/mysql/3308 --user=mysql

mysqld_multi start 3306mysqld_multi start 3307mysqld_multi start 3308

netstat -tunlp | grep -E '(3306|3307|3308)'

apt-get install haproxy

# this config needs haproxy-1.1.28 or haproxy-1.2.1global	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	#quietdefaults	log global	mode	http	#option httplog	optiondontlognull	retries 3	option redispatch	maxconn 2000	contimeout5000	clitimeout50000	srvtimeout50000listenmysql 0.0.0.0:6666	mode tcp	option mysql-check user root	balance roundrobin	servermysql_1 127.0.0.1:3306 weight 1 check inter 1s rise 2 fall 5	servermysql_2 127.0.0.1:3307 weight 1 check inter 1s rise 2 fall 5	servermysql_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

/etc/init.d/haproxy start