Haproxy+MYSQL 负载均衡 原创

[root@monitor app1]# yum install haproxy
Loaded plugins: security
base                                                     | 3.7 kB     00:00     
epel                                                     | 4.3 kB     00:00     
epel/primary_db                                          | 5.9 MB     00:05     
extras                                                   | 3.4 kB     00:00     
updates                                                  | 3.4 kB     00:00     
updates/primary_db                                       | 5.2 MB     00:04     
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package haproxy.x86_64 0:1.5.4-2.el6_7.2 will be installed
--> Finished Dependency Resolution

Dependencies Resolved

================================================================================
 Package         Arch           Version                   Repository       Size
================================================================================
Installing:
 haproxy         x86_64         1.5.4-2.el6_7.2           updates         792 k

Transaction Summary
================================================================================
Install       1 Package(s)

Total download size: 792 k
Installed size: 2.4 M
Is this ok [y/N]: y
Downloading Packages:
haproxy-1.5.4-2.el6_7.2.x86_64.rpm                       | 792 kB     00:00     
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running Transaction
Warning: RPMDB altered outside of yum.
  Installing : haproxy-1.5.4-2.el6_7.2.x86_64                               1/1 
  Verifying  : haproxy-1.5.4-2.el6_7.2.x86_64                               1/1 

Installed:
  haproxy.x86_64 0:1.5.4-2.el6_7.2                                              

Complete!

装了那些东西：

[root@monitor app1]# rpm -ql haproxy.x86_64 0:1.5.4-2.el6_7.2
/etc/haproxy
/etc/haproxy/haproxy.cfg
/etc/logrotate.d/haproxy
/etc/rc.d/init.d/haproxy
/etc/sysconfig/haproxy
/usr/bin/halog
/usr/bin/iprange
/usr/sbin/haproxy
/usr/share/doc/haproxy-1.5.4
/usr/share/doc/haproxy-1.5.4/CHANGELOG
/usr/share/doc/haproxy-1.5.4/LICENSE
/usr/share/doc/haproxy-1.5.4/README
/usr/share/doc/haproxy-1.5.4/acl-content-sw.cfg
/usr/share/doc/haproxy-1.5.4/acl.fig
/usr/share/doc/haproxy-1.5.4/architecture.txt
/usr/share/doc/haproxy-1.5.4/close-options.txt
/usr/share/doc/haproxy-1.5.4/coding-style.txt
/usr/share/doc/haproxy-1.5.4/configuration.txt
/usr/share/doc/haproxy-1.5.4/content-sw-sample.cfg
/usr/share/doc/haproxy-1.5.4/cookie-options.txt
/usr/share/doc/haproxy-1.5.4/cttproxy-src.cfg
/usr/share/doc/haproxy-1.5.4/design-thoughts
/usr/share/doc/haproxy-1.5.4/design-thoughts/backends-v0.txt
/usr/share/doc/haproxy-1.5.4/design-thoughts/backends.txt
/usr/share/doc/haproxy-1.5.4/design-thoughts/be-fe-changes.txt
/usr/share/doc/haproxy-1.5.4/design-thoughts/binding-possibilities.txt
/usr/share/doc/haproxy-1.5.4/design-thoughts/buffer-redesign.txt
/usr/share/doc/haproxy-1.5.4/design-thoughts/buffers.fig
/usr/share/doc/haproxy-1.5.4/design-thoughts/config-language.txt
/usr/share/doc/haproxy-1.5.4/design-thoughts/connection-reuse.txt
/usr/share/doc/haproxy-1.5.4/design-thoughts/cttproxy-changes.txt
/usr/share/doc/haproxy-1.5.4/design-thoughts/entities-v2.txt
/usr/share/doc/haproxy-1.5.4/design-thoughts/how-it-works.txt
/usr/share/doc/haproxy-1.5.4/design-thoughts/http_load_time.url
/usr/share/doc/haproxy-1.5.4/design-thoughts/rate-shaping.txt
/usr/share/doc/haproxy-1.5.4/design-thoughts/sess_par_sec.txt
/usr/share/doc/haproxy-1.5.4/gpl.txt
/usr/share/doc/haproxy-1.5.4/haproxy-en.txt
/usr/share/doc/haproxy-1.5.4/haproxy-fr.txt
/usr/share/doc/haproxy-1.5.4/haproxy.1
/usr/share/doc/haproxy-1.5.4/haproxy.cfg
/usr/share/doc/haproxy-1.5.4/internals
/usr/share/doc/haproxy-1.5.4/internals/acl.txt
/usr/share/doc/haproxy-1.5.4/internals/body-parsing.txt
/usr/share/doc/haproxy-1.5.4/internals/buffer-operations.txt
/usr/share/doc/haproxy-1.5.4/internals/buffer-ops.fig
/usr/share/doc/haproxy-1.5.4/internals/connect-status.txt
/usr/share/doc/haproxy-1.5.4/internals/connection-header.txt
/usr/share/doc/haproxy-1.5.4/internals/connection-scale.txt
/usr/share/doc/haproxy-1.5.4/internals/entities.fig
/usr/share/doc/haproxy-1.5.4/internals/entities.pdf
/usr/share/doc/haproxy-1.5.4/internals/entities.svg
/usr/share/doc/haproxy-1.5.4/internals/entities.txt
/usr/share/doc/haproxy-1.5.4/internals/hashing.txt
/usr/share/doc/haproxy-1.5.4/internals/header-parser-speed.txt
/usr/share/doc/haproxy-1.5.4/internals/header-tree.txt
/usr/share/doc/haproxy-1.5.4/internals/http-cookies.txt
/usr/share/doc/haproxy-1.5.4/internals/http-docs.txt
/usr/share/doc/haproxy-1.5.4/internals/http-parsing.txt
/usr/share/doc/haproxy-1.5.4/internals/naming.txt
/usr/share/doc/haproxy-1.5.4/internals/pattern.dia
/usr/share/doc/haproxy-1.5.4/internals/pattern.pdf
/usr/share/doc/haproxy-1.5.4/internals/polling-states.fig
/usr/share/doc/haproxy-1.5.4/internals/repartition-be-fe-fi.txt
/usr/share/doc/haproxy-1.5.4/internals/sequence.fig
/usr/share/doc/haproxy-1.5.4/internals/stats-v2.txt
/usr/share/doc/haproxy-1.5.4/internals/stream-sock-states.fig
/usr/share/doc/haproxy-1.5.4/internals/todo.cttproxy
/usr/share/doc/haproxy-1.5.4/lgpl.txt
/usr/share/doc/haproxy-1.5.4/proxy-protocol.txt
/usr/share/doc/haproxy-1.5.4/queuing.fig
/usr/share/doc/haproxy-1.5.4/tarpit.cfg
/usr/share/doc/haproxy-1.5.4/url-switching.cfg
/usr/share/haproxy
/usr/share/haproxy/400.http
/usr/share/haproxy/403.http
/usr/share/haproxy/408.http
/usr/share/haproxy/500.http
/usr/share/haproxy/502.http
/usr/share/haproxy/503.http
/usr/share/haproxy/504.http
/usr/share/haproxy/README
/usr/share/man/man1/halog.1.gz
/usr/share/man/man1/haproxy.1.gz
/var/lib/haproxy
package 0:1.5.4-2.el6_7.2 is not installed

开机自动启动：

chkconfig haproxy on

服务启动：
service haproxy on

[root@monitor etc]# netstat -tunlp | grep haproxy
tcp 0 0 0.0.0.0:8888 0.0.0.0:* LISTEN 1296/haproxy
tcp 0 0 10.169.216.172:3306 0.0.0.0:* LISTEN 1296/haproxy
udp 0 0 0.0.0.0:60642 0.0.0.0:* 1296/haproxy

日志记录：

[root@monitor etc]# cat /etc/rsyslog.d/49-haproxy.conf

# Create an additional socket in haproxy's chroot in order to allow logging via
# /dev/log to chroot'ed HAProxy processes
$AddUnixListenSocket /var/lib/haproxy/dev/log
$ModLoad imudp
$UDPServerRun 514
local3.*     /var/log/haproxy.log

# Send HAProxy messages to a dedicated logfile
if $programname startswith 'haproxy' then /var/log/haproxy.log
&~

[root@monitor etc]# cat /etc/haproxy/haproxy.cfg

# 全局配置参数
global
    log 127.0.0.1 local0 notice
    user haproxy
    group haproxy

# 一些默认参数
defaults
    log global
    retries 3
    option  dontlognull
    option redispatch
    maxconn 2000
    timeout connect 3000
    timeout server 5000
    timeout client 5000

# 这个是我们定义的负载均衡的配置
listen mysql-lb1
    # 绑定的IP和端口 haproxy服务器一个网卡IP
    bind 10.169.216.172:3306      
    # 模式是TCP
    mode tcp
    # 通过mysql连接去检测mysql是否可以访问 创建用户haproxy_check 密码为空,权限usage
    option mysql-check user haproxy_check   
    # 负载均衡算法是 轮询
    balance roundrobin
    # 下面两个就是后端被访问的server
    server mysql_1 10.24.220.70:3306 weight 1 check
    server mysql_2 10.169.214.33:3306 weight 1 check

# 自带的监控服务器的配置
# 监控服务的端口是 8888
listen stats *:8888
       # 监控模式是http
       mode http
       option httpclose
       balance roundrobin
       stats uri /
       stats realm Haproxy Statistics
       # 监控的用户名和密码
       stats auth myadmin:myadmin

后台MYSQL每台执行：

# 通过mysql连接去检测mysql是否可以访问 创建用户haproxy_check 密码为空,权限usage

drop user haproxy_check@'10.169.216.172';
create user haproxy_check@'10.169.216.172';
grant usage on *.* to haproxy_check@'10.169.216.172';
set password for haproxy_check@'10.169.216.172' ='';

haproxy_check 账号测试:

root@monitor etc]# mysql -uhaproxy_check -p -h 10.169.216.172 -e "select @@hostname;"   
Enter password: 
+------------+
| @@hostname |
+------------+
| slave2     |
+------------+
[root@monitor etc]# mysql -uhaproxy_check -p -h 10.169.216.172 -e "select @@hostname;"
Enter password: 
+------------+
| @@hostname |
+------------+
| slave1     |
+------------+
[root@monitor etc]# mysql -uhaproxy_check -p -h 10.169.216.172 -e "select @@hostname;"
Enter password: 
+------------+
| @@hostname |
+------------+
| slave2     |
+------------+
[root@monitor etc]# mysql -uhaproxy_check -p -h 10.169.216.172 -e "select @@hostname;"
Enter password: 
+------------+
| @@hostname |
+------------+
| slave1     |
+------------+
[root@monitor etc]# mysql -uhaproxy_check -p -h 10.169.216.172 -e "select @@hostname;"
Enter password: 
+------------+
| @@hostname |
+------------+
| slave2     |
+------------+
[root@monitor etc]# mysql -uhaproxy_check -p -h 10.169.216.172 -e "select @@hostname;"
Enter password: 
+------------+
| @@hostname |
+------------+
| slave1     |
+------------+

ROOT 用户测试

[root@monitor etc]# mysql -uroot -p -h 10.169.216.172 -e "select @@hostname;"   Enter password: 
+------------+
| @@hostname |
+------------+
| slave2     |
+------------+
[root@monitor etc]# mysql -uroot -p -h 10.169.216.172 -e "select @@hostname;"
Enter password: 
+------------+
| @@hostname |
+------------+
| slave1     |
+------------+