keepalive+haproxy实验

平台: Mac
工具: Vagrant
系统: CentOS6.5

四台虚拟机
192.168.31.103 负载均衡器   安装keepalived+haproxy  master
192.168.31.104 负载均衡器   安装keepalived+haproxy  slave

192.168.31.110 webserver1   安装apache
192.168.31.111 webserver2   安装apache

vagrant init base

Vagrantfile配置

config.vm.define "web1" do |web1| #第一台web服务器
      web1.vm.network "public_network", ip: "192.168.31.110"
      web1.vm.hostname = "web1"
  end 
  config.vm.define "web2" do |web2| #第二台web服务器
      web2.vm.network "public_network", ip: "192.168.31.111"
      web2.vm.hostname = "web2"
  end
  config.vm.define "lb1" do |lb1| #第一台负载均衡器
      lb1.vm.network "public_network", ip: "192.168.31.103"
      lb1.vm.hostname = "lb1"
  end
  config.vm.define "lb2" do |lb2| #第二台负载均衡器
      lb2.vm.network "public_network", ip: "192.168.31.104"
      lb2.vm.hostname = "lb2"
  end


vagrant up

连接到两台web服务器, yum安装httpd, 启动服务, 添加一个首页, 访问测试
vagrant ssh web1
sudo su -
service iptables stop
chkconfig iptables off
yum -y install httpd
service httpd start
echo "web1 index" >> /var/www/html/index.html
访问首页查看: http://192.168.31.110/

第二台web服务器一样的操作


开始lb1的keepalive安装与配置

vagrant ssh lb1
sudo su -
service iptables stop
chkconfig iptables off
yum install -y libnl-devel  libnl  openssl openssl-devel
wget http://www.keepalived.org/software/keepalived-1.2.13.tar.gz
tar -zxvf keepalived-1.2.13.tar.gz
cd keepalived-1.2.13
./configure
make && make install

cp /usr/local/sbin/keepalived  /usr/sbin/
cp /usr/local/etc/sysconfig/keepalived /etc/sysconfig/
cp /usr/local/etc/rc.d/init.d/keepalived  /etc/init.d/
mkdir /etc/keepalived

vi /etc/keepalived/keepalived.conf
```
! Configuration File for keepalived
  
   global_defs {
           notification_email {
                   [e-mail]
           }
           notification_email_from [e-mail]
           smtp_server smtp.qq.com
           smtp_connect_timeout 30
          router_id LVS_DEVEL
  }
 
  vrrp_instance VI_1 {
          state MASTER    #备份服务器上将MASTER改为BACKUP
          interface eth1  #该处每个机器可能不同 ip addr 查看选择相应的
          virtual_router_id 51
          mcast_src_ip  192.168.31.103  #selfip
          priority 100    # 备份服务上将100改为90
          advert_int 1
          authentication {
                  auth_type PASS
                  auth_pass 1111
          }
          virtual_ipaddress {
                  192.168.31.188    #(如果有多个VIP，继续换行填写.选定vip之前 ping 一下ping不通则可用)
          }
  }
```

service keepalived start


从机一样操作, 配置文件需要按注释修改


安装haproxy

国内下载不了, 开启VPN
wget http://www.haproxy.org/download/1.5/src/haproxy-1.5.12.tar.gz
tar -axvf haproxy-1.5.12.tar.gz
cd haproxy-1.5.12
make TARGET=linux26 PREFIX=/usr/local/haproxy
make install PREFIX=/usr/local/haproxy
cd /usr/local/haproxy && mkdir conf && cd conf && vi haproxy.conf

主机配置
```
global
log 127.0.0.1 local0
maxconn 4096
chroot /usr/local/haproxy
uid 99
gid 99
daemon
nbproc 1
pidfile /usr/local/haproxy/haproxy.pid
#debug

defaults
log 127.0.0.1 local3
mode http
option httplog
option httpclose
option forwardfor
#option forwardfor header cral
option redispatch
retries 2
maxconn 2000
#balance source
balance roundrobin # static-rr  leastconn first source
stats uri /haproxy-stats
stats auth admin:123456
timeout connect 5000
timeout client 50000
timeout server 50000

listen web_proxy    192.168.31.188:80
   server web1  192.168.31.110:80
   server web2  192.168.31.111:80
```

启动
/usr/local/haproxy/sbin/haproxy -f   /usr/local/haproxy/conf/haproxy.conf

从机配置
```
global
log 127.0.0.1 local0
maxconn 4096
chroot /usr/local/haproxy
uid 99
gid 99
daemon
nbproc 1
pidfile /usr/local/haproxy/haproxy.pid
#debug

defaults
log 127.0.0.1 local3
mode http
option httplog
option httpclose
option forwardfor
#option forwardfor header cral
option redispatch
retries 2
maxconn 2000
#balance source
balance roundrobin # static-rr  leastconn first source
stats uri /haproxy-stats
stats auth admin:123456
timeout connect 5000
timeout client 50000
timeout server 50000

listen web_proxy    0.0.0.0:80
   server web1  192.168.31.110:80
   server web2  192.168.31.111:80
```

/usr/local/haproxy/sbin/haproxy -f   /usr/local/haproxy/conf/haproxy.conf

参考地址: 排错url http://www.linuxidc.com/Linux/2015-03/114981.htm