DR mode is sent to the back-end server by modifying the MAC hair of the packet, but if the back-end server receives the packet but finds that it does not accept the IP address, shouldn"t the packet be discarded? What is the means to get the back-end server to accept and process the package?
rs. Vip, is generally configured on lo, and then set to disable arp response, so that rs will find this address on the local machine
DR mode, RS also needs to be bound to vip, which is generally bound to localhost. At the same time, you need to set arptables-related content and do not respond to arp requests from vip.
in this way, if a request from vip is received on RS, it will not be discarded
RS binding vip setting:
ifconfig lo:0 172.16.206.110 netmask 255.255.255.255 broadcast 172.16.206.110ARP suppression configuration is as follows:
-sharp echo "1" > /proc/sys/net/ipv4/conf/lo/arp_ignore
-sharp echo "2" > /proc/sys/net/ipv4/conf/lo/arp_announce
-sharp echo "1" > /proc/sys/net/ipv4/conf/all/arp_ignore
-sharp echo "2" > /proc/sys/net/ipv4/conf/all/arp_announcePrevious: (asking for advice) on the problem of js function passing by value
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