LVS implements DR model construction

Table of contents

1. Implement DR model construction

   1. Load scheduler configuration

        1.1 Adjust ARP parameters

1.2 Configure the virtual IP address and restart the network card

1.3 Install ipvsadm

1.4 Load ip_vs module

     1.5 Start ipvsadm service

1.6 Configure load distribution strategy

1.7 Preservation strategy

2. Web node configuration

       1.1 Adjust ARP parameters

1.2 Configure virtual IP address

1.3 Add a loopback route

 1.4 Install nginx and write files

1.5 Website View

---

1. Implement DR model construction

   1. Load scheduler configuration

        1.1 Adjust ARP parameters

            vim /etc/sysctl.conf
            net.ipv4.conf.all.send_redirects = 0 
net.ipv4.conf.default.send_redirects=0
net.ipv4.conf.ens33.send_redirects = 0
            sysctl -p

       

1.2 Configure the virtual IP address and restart the network card

            cd /etc/sysconfig/network-scripts/
            cp ifcfg-ens33 ifcfg-ens33:0
            systemctl restart network

 

1.3 Install ipvsadm

            yum  install -y ipvsadm
      

1.4 Load ip_vs module

            modprobe ip_vs
            lsmod |grep ip_vs
 

     1.5 Start ipvsadm service

Create the file touch /etc/sysconfig/ipvsadm
            systemctl start ipvsadm
      

1.6 Configure load distribution strategy

            ipvsadm -A -t 192.168.115.200:80 -s rr
            ipvsadm -a -t 192.168.115.200:80 -r 192.168.115.4:80 -g
            ipvsadm -a -t 192.168.115.200:80 -r 192.168.115.5:80 -g
      

1.7 Preservation strategy

            ipvsadm-save > /etc/sysconfig/ipvsadm
  

2. Web node configuration

       1.1 Adjust ARP parameters

            vim /etc/sysctl.conf

            net.ipv4.conf.all.arp_ignore=1 
net.ipv4.conf.all.arp_announce=2 
net.ipv4.conf.default.arp_ignore=1 
net.ipv4.conf.default.arp_announce = 2 
net.ipv4.conf.lo.arp_ignore = 1 
net.ipv4.conf.lo.arp_announce=2
            sysctl -p
      

 

1.2 Configure virtual IP address

            cd /etc/sysconfig/network-scripts/
            cp ifcfg-lo ifcfg-lo:0
            vim ifcfg-lo:0
        

 

1.3 Add a loopback route

            route add -host 192.168.115.200/32 dev lo:0
        

 1.4 Install nginx and write files

 

 

1.5 Website View