Haproxy+keepalive-群集架构实验

程序员文章站 2022-06-19 17:07:30

LVS+Keepalived高可用群集群集架构----Haproxy群集实验案例拓补图：要求：如图所示，有两台haproxy调度器，但是所有的流量全部由主调度器获取，由主调度器可以正常调度web节点。环境：调度器(双机热备)IP地址：192.168.100.11（主）+ 漂移地址:virtual-ip：192.168.100.200 +Haproxy服务器IP地址：192.168.100.12（备）+漂移地址:virtual-ip：192.168.100.200 +Haproxy服务器...

LVS+Keepalived高可用群集
 群集架构----Haproxy群集

实验案例拓补图：
Haproxy+keepalive-群集架构实验
要求：如图所示，有两台haproxy调度器，但是所有的流量全部由主调度器获取，由主调度器可以正常调度web节点。

环境：
调度器(双机热备)
IP地址：192.168.100.11（主）+ 漂移地址:virtual-ip：192.168.100.200 +Haproxy服务器
IP地址：192.168.100.12（备）+漂移地址:virtual-ip：192.168.100.200 +Haproxy服务器
Web服务器两台:
IP地址：192.168.100.2（Web1）
IP地址：192.168.100.3（Web2）
NFS共享服务器:
IP地址：192.168.100.4
客户端一台:用于测试验证
IP地址：192.168.100.5（client）

NFS共享服务器: 192.168.100.4

mkdir /web1
mkdir /web2

echo "<h1>nginx1</h1>" > /web1/index.html   '设置共享目录'
echo "<h1>nginx2</h1>" > /web2/index.html   '设置共享目录'

vi /etx/exports
/web1 192.168.100.2/32 (ro)
/web2 192.168.100.3/32 (ro)

systemctl restart nfs
systemctl restart rpcbind

Nginx服务器1：192.168.100.2

tar xzvf nginx-1.13.7.tar.gz  '先解压'
yum -y install gcc gcc-c++ make pcre-devel zlib-devel

useradd -M -s /sbin/nologin nginx
mount 192.168.100.4:/web1 /var/www/html/  'nfs共享目录挂载到/var/www/html'

nginx  '开启nginx服务'
curl http://localhost
<h1>nginx1</h1> '效果'

//LVS+Keepalived高可用群集
vi web1.sh  
#!/bin/bash
# lvs web1
ifconfig lo:0 192.168.100.200 broadcast 192.168.100.200 netmask 255.255.255.255 up  '添加虚拟地址的虚接口'
route add -host 192.168.100.200 dev lo:0   '给lo:0添加路由'
echo "1" > /proc/sys/net/ipv4/conf/lo/arp_ignore
echo "1" > /proc/sys/net/ipv4/conf/all/arp_ignore
echo "2" > /proc/sys/net/ipv4/conf/lo/arp_announce
echo "2" > /proc/sys/net/ipv4/conf/all/arp_announce
sysctl -p &> /dev/null

sh web1.sh

ifconfig
lo:0: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536   '添加的虚拟地址'
inet 192.168.100.200  netmask 255.255.255.255
        loop  txqueuelen 1  (Local Loopback)
route -n
192.168.100.200 0.0.0.0         255.255.255.255 UH    0      0        0 lo

Nginx服务器2：192.168.100.3

tar xzvf nginx-1.13.7.tar.gz  '先解压'
yum -y install gcc gcc-c++ make pcre-devel zlib-devel

useradd -M -s /sbin/nologin nginx
mount 192.168.100.4:/web2 /var/www/html/  'nfs共享目录挂载到/var/www/html'

nginx  '开启nginx服务'
curl http://localhost
<h1>nginx2</h1> '效果'

//LVS+Keepalived高可用群集
vi web2.sh
#!/bin/bash
# lvs web2
ifconfig lo:0 192.168.100.200 broadcast 192.168.100.200 netmask 255.255.255.255 up  '添加虚拟地址的虚接口'
route add -host 192.168.100.200 dev lo:0   '给lo:0添加路由'
echo "1" > /proc/sys/net/ipv4/conf/lo/arp_ignore
echo "1" > /proc/sys/net/ipv4/conf/all/arp_ignore
echo "2" > /proc/sys/net/ipv4/conf/lo/arp_announce
echo "2" > /proc/sys/net/ipv4/conf/all/arp_announce
sysctl -p &> /dev/null

sh web2.sh

ifconfig
lo:0: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536   '添加的虚拟地址'
inet 192.168.100.200  netmask 255.255.255.255
        loop  txqueuelen 1  (Local Loopback)
route -n
192.168.100.200 0.0.0.0         255.255.255.255 UH    0      0        0 lo

IP地址：192.168.100.11（主）+ 漂移地址:virtual-ip：192.168.100.200 +Haproxy服务器

Keepalived搭建双机主

tar zxvf keepalived-2.0.13.tar.gz '解压'
yum -y insatll ipvsadm   
yum -y install gcc gcc-c++ make popt-devel kernel-devel openssl-devel

cd keepalived-2.0.13/
./configure --prefix=/  '配置'
make && make install '编译安装'

modprobe ip_vs

cat /proc/net/ip_vs  '以下是效果'
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn

systemctl enable keepalived  '开机自启'
cp keepalived/etc/init.d/keepalived /etc/init.d/  '方便编辑'

配置keepalived.conf

'先把里面东西删掉'
主配置keepalived
! Configuration File for keepalived
global_defs {
router_id lvs_1
}
vrrp_instance vi_1 {
    state MASTER    
    interface ens33
    virtual_router_id 51
    priority 150
    advert_int 1
    authentication {
   auth_type PASS
   auth_pass 6666
}
virtual_ipaddress {
      192.168.100.200
}
}
virtual_server 192.168.100.200 80 {  '虚拟地址'
  delay_loop 6
  lb_algo rr
  lb_kind DR
  persistence_timeout 6
  protocol TCP
  real_server 192.168.100.2 80 { '节点地址'
  weight 1
  TCP_CHECK {
   connect_port 80
   connect_timeout 3
   nb_get_retry 3
   delay_before_retry 3
}
}
real_server 192.168.100.3 80 {  '节点地址'
  weight 1
  TCP_CHECK {
  connect_port 80
  connect_timeout 3
  nb_get_retry 3
  delay_before_retry 3
}
}
}

systemctl restart keepalived.service  '开启keepalived服务'

ip addr  '代表是主会添加虚拟地址'
ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
    link/ether 00:0c:29:02:b2:9b brd ff:ff:ff:ff:ff:ff
inet 192.168.100.11/24 brd 192.168.100.255 scope global ens33
 valid_lft forever preferred_lft forever
inet 192.168.100.200/32 scope global ens33
       valid_lft forever preferred_lft forever
       inet6 fe80::20c:29ff:fe02:b29b/64 scope link 
       valid_lft forever preferred_lft forever
       
ipvsadm -Ln   
Prot LocalAddress:Port Scheduler Flags
  -> RemoteAddress:Port           Forward Weight ActiveConn InActConn
  TCP  192.168.100.200:80 rr persistent 6
  -> 192.168.100.2:80             Route   1      0          1  
  -> 192.168.100.3:80             Route   1      0          4       
  
tail -f /var/log/messages '如下面这个结果'
Dec 11 00:26:38 localhost Keepalived_healthcheckers[70323]: TCP connection to [192.168.100.2]:tcp:80 success.

Haproxy服务器：192.168.100.11

tar xzvf haproxy-1.4.24.tar.gz  '解压'
yum -y install gcc gcc-c++ make pcre-devel zlib-devel

mkdir /etc/haproxy
cd haproxy-1.4.24/
make TARGET=linux26 
make install

cp examples/haproxy.cfg /etc/haproxy/
vi /etc/haproxy/haproxy.cfg 
#chroot /usr/share/haproxy '注释掉'
#redispatch
'删除所有listen,留下global defaults 加入下面这段' 
listen webcluster 0.0.0.0:80
option httpchk GET /index.html
balance roundrobin
server web1 192.168.100.2:80 check inter 2000 fall 3 'web1服务器ip'
server web2 192.168.100.3:80 check inter 2000 fall 3 'web2服务器ip'

//设置开机自启haproxy
cd haproxy-1.4.24/
cp examples/haproxy.init  /etc/init.d/haproxy
vi /etc/init.d/haproxy
# chkconfig: 35 85 15  '默认是- 改为35'

chkconfig --add haproxy
chkconfig --list
haproxy         0:关 1:关 2:关 3:开 4:关 5:开 6:关


cd /etc/init.d/
chmod +x haproxy '授予权限'
chkconfig --add haproxy 
ln -s /usr/local/sbin/haproxy  /usr/sbin/haproxy

systemctl enable haproxy
systemctl start haproxy '开启haproxy服务'

Keepalived搭建双机备

Haproxy服务器：192.168.100.12 跟 Haproxy服务器：192.168.100.11一样，copy上面的就好。

注：Keepalived备份服务器的配置与master的配置有三个选项不同。

vi /etc/keepalived/keepalived.conf
router_id:设为自有名称
state：设为BACKUP
priority:值低于主服务器 145
其他选项与master相同

谷歌浏览器访问漂移地址：192.168.100.200

这是Web2节点的页面
Haproxy+keepalive-群集架构实验
等几分钟，清空浏览器记录访问漂移地址：192.168.100.200

这是Web1节点的页面 Haproxy+keepalive-群集架构实验

客户机
Haproxy+keepalive-群集架构实验

关闭 192.168.100.11主然后在访问漂移地址：192.168.100.200
Haproxy+keepalive-群集架构实验
再次访问 192.168.100.200 效果一样会有两个节点页面。

Haproxy+keepalive-群集架构实验
ip addr可以查看漂移地址产生没有。

本文地址：https://blog.csdn.net/weixin_50344807/article/details/111031093

Haproxy+keepalive-群集架构实验

NFS共享服务器: 192.168.100.4

Nginx服务器1：192.168.100.2

Nginx服务器2：192.168.100.3

IP地址：192.168.100.11（主）+ 漂移地址:virtual-ip：192.168.100.200 +Haproxy服务器

Keepalived搭建双机主

配置keepalived.conf

Haproxy服务器：192.168.100.11

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