How To Setup Virtual Ip In Linux?
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1. First, open the terminal and check to see if IP forwarding is enabled by running the command:
sysctl net.ipv4.ip_forward
2. If the output of the command is 0, IP forwarding is disabled and needs to be enabled. To enable it, run the command:
sudo sysctl -w net.ipv4.ip_forward=1
3. Next, configure the network interface that will be used for virtual IPs. Edit the configuration file for the interface, which is typically located in the /etc/network/interfaces directory.
4. Add the following lines to the interface configuration:
auto <interface_name>
iface <interface_name> inet static
address <virtual_ip_address>
netmask <netmask_address>
5. Now, use the command:
sudo ip addr add <virtual_ip_address>/<netmask_address> dev <interface_name>
to add the virtual IP address to the interface.
6. Finally, use the command:
sudo ip route add <destination_address>/<netmask_address> via <virtual_ip_address>
to assign the virtual IP as the gateway for the destination address.