使用Haproxy对MariaDB做负载均衡-原创手记-慕课网

服务器环境:

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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)'

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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:

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查看haproxy监控页面:

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配置成功。

haproxy mariadb mysq群集