topic persistent IP 7-mode in General Discussion

persistent IP 7-mode

david01845 — Mon, 15 Mar 2021 14:50:38 GMT

I have a 7-mode HA pair: nodeA and node B. I want to configure an IP on nodeA but nodeB does not require an IP in the same same subnet. However, I want the IP to failover when nodeA goes down and I want it to be persistent when nodeA reboots.

ifgroup: data

Vlan Interface: data-172

Do I just add line below to '/etc/rc' in nodeA:

ifconfig data-172 partner 172.28.172.100 netmask 255.255.255.0 mtusize 1500 up

Do I also need to create the vlan on the partner 'nodeB'?

Re: persistent IP 7-mode

pedro_rocha — Mon, 15 Mar 2021 19:25:50 GMT

hello

yes you do. Check below

nodeA

ifconfig data-172 IP172_NODE_A netmask 255.255.255.0 mtusize 1500 partner INTERFACE172_NODE_B up

Re: persistent IP 7-mode

Mjizzini — Mon, 15 Mar 2021 21:08:00 GMT

/etc/rc of node A

... vlan add data 172 ifconfig data-172 <ip_of_nodeA> netmask 255.255.255.0 mtusize 1500 up partner data-172 ...

etc/rc of node B

vlan add data 172 ifconfig data-172 partner data-172

Re: persistent IP 7-mode

pedro_rocha — Mon, 15 Mar 2021 21:16:05 GMT

Yes, that's correct. Although the second ifconfig (nodeB) is not mandatory since there is no IP address.

Even though seems ok, perform takeover/giveback tests to ensure you have what you want.