HAProxy+KeepAlived高可用负载均衡搭建

KeepAlived下载地址

HAProxy下载地址

这里都选择了最新的版本,即haproxy-2.0.1.tar.gz和Keepalived for Linux - Version 2.0.17 

1、HAProxy安装与配置(基于Centos7)IP为 192.168.10.9

1)解压

tar xvf haproxy-2.0.1.tar.gz

2)编译安装haproxy

cd haproxy-2.0.1

make TARGET=linux-glibc PREFIX=/usr/local/haproxy

make install PREFIX=/usr/local/haproxy 

3)配置环境变量

vi /etc/profile

export HAPROXY_HOME=/usr/local/haproxy

export PATH=$HAPROXY_HOME/sbin:$PATH

退出,执行source /etc/profie

4)配置haproxy配置文件

mkdir -p /usr/local/haproxyconf

cp /usr/local/haproxy-2.0.1/examples/option-http_proxy.cfg /usr/local/haproxyl/conf/haproxy.cfg

cd /usr/local/haproxy/conf 

vi haproxy.cfg

输入以下信息(加粗为关键字,#后为注释)

# 默认配置 

defaults 

    # 应用全局的日志配置 

    log global      

    # 默认的模式mode=tcp|http|health 

    # tcp是4层负载均衡,http是7层,health只返回ok 

    mode tcp

     # 日志类别

    option tcplog 

    # 不记录健康检查日志信息 

    option dontlognull 

    # 3次失败认为服务不可用 

    retries 3

    # 每个进程可用的最大连接数 

    maxconn 2000 

    # 连接超时时间 

    timeout connect 5s 

    # 客户端超时时间

    timeout client 120s

     # 服务端超时       

    timeout server 120s 

# 邦定配置

listen rabbitmq_cluster 

    # 转发端口 

    bind *:5671

    # 配置tcp模式 

    mode tcp 

    # 负载均衡策略-采用简单的轮询策略      

    balance roundrobin 

    # RabbitMQ集群节点配置

    server mqnode1 192.168.10.13:5672 check inter 5000 rise 2 fall 3 weight

    server mqnode2 192.168.10.14:5672 check inter 5000 rise 2 fall 3 weight 1

    server mqnode3 192.168.10.15:5672 check inter 5000 rise 2 fall 3 weight 1 

# haproxy监控页面地址 

listen monitor 

    # haproxy页面监听端口        

    bind *:9181 

    mode http 

    option httplog 

    stats enable 

    # haproxy页面地址 

    stats uri /haproxy_stats 

    # 要登录 

    stats realm welcome login \ Haproxy 

    # 登录的用户名及密码

    stats auth admin:admin         

    # 隐藏haproxy版本号 

    stats hide-version 

    # haproxy监听页面刷新时间 

    stats refresh 5s

退出,执行haproxy -f haproxy.cfg,运行haproxy

浏览器输入:http://192.168.10.9:9181/haproxy_stats

HAProxy+KeepAlived高可用负载均衡搭建_第1张图片
HAProxy监控页面 

2、KeepAlived安装与配置,IP:192.168.10.9

1)解压

tar -zxvf keepalived-2.0.17.tar.gz

2)编译前配置

cd keepalived-2.0.17

由于1.4版本开始需要对IPV6进行支持,所以在编译安装Keepalived之前要先安装如下环境

yum install -y libnl-devel libnl3-devel libnfnetlink-devel

如果安装出现Cannot retrieve metalink for repository: epel. Please verify its path and try again,这样的问题,

可以修改以下内容:打开/etc/yum.repos.d/epel.repo,将  

[epel]

name=Extra Packages for Enterprise Linux 6 - $basearch 

#baseurl=http://download.fedoraproject.org/pub/epel/6/$basearch 

mirrorlist=https://mirrors.fedoraproject.org/metalink?repo=epel-6&arch=$basearch 

修改为:[epel]  

name=Extra Packages for Enterprise Linux 6 - $basearch  

baseurl=http://download.fedoraproject.org/pub/epel/6/$basearch

#mirrorlist=https://mirrors.fedoraproject.org/metalink?repo=epel-6&arch=$basearch 

然后执行:yum clean allyum install -y libnl-devel libnl3-devel libnfnetlink-devel  

如果编译时出现!!! OpenSSL is not properly installed on your system. !!! Can not include OpenSSL headers files.!!! 这样的报错需要先安装openssl-devel这个软件包

yum install openssl-devel -y 

最后执行:

./configure --prefix=/usr/local/keepalived

3)编译安装

make && make install

4)配置环境变量

vi /etc/profile

export KEEPALIVED_HOME=/usr/local/keepalived

export PATH=$KEEPALIVED_HOME/sbin:$PATH

生效环境变量

source /etc/profile

验证安装

keepalived -v

5)配置keepAlived配置文件

可参考以下链接:

Keepalived+HAProxy实现高可用的负载均衡

Keepalived 2.07编译安装与配置教程

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