In principle, you do not need to make a special configuration of your cloud server. For Linux cloud servers associated with the TCP type VIP, you need to modify the system configuration file/etc/sysctl.conf The following three items are 0:
Net.ipv4.conf.default.rp_filter = 0
Net.ipv4.conf.all.rp_filter = 0
Net.ipv4.conf.eth0.rp_filter = 0
If there is a communication requirement between cloud servers deployed in the same intranet segment and you find that there is an inability to communicate, you need to check that the following parameters are configured correctly:
and use Sysctl–p to update the configuration.