17.8.1 Configuring Firewall Rules for Keepalived DR-Mode Load Balancing

Enable access to the services or ports that you want Keepalived to handle.

For example, to enable access to HTTP and make this rule persist across reboots, enter the following commands:

# firewall-cmd --zone=public --add-service=http
success
# firewall-cmd --permanent --zone=public --add-service=http
success