SAP HANA High Availability (System Replication)

[waelkensd]

Hi all,

I'm implementing HANA for a customer and the productive environments need to be High Available using System Replication.

All this is configured and works fine, but the only point which is still open is how to deal with the connectivity. In other words, how do we make it totally transparent to the application running on top (it being SAP Netweaver, Luimira, etc...).

My idea is to make an entry in the DNS: eg hanaprod.domain.local linked to a dedicated IP address and activate this IP address on the active Node.

When the takeover takes place and the activa HANA system runs on the second node I'd like to move the IP address to the 2nd node.

Now I got 2 questions.

1. I guess someone has this setup already. If yes, how did you deal with this?

2. It seems farily easy to do this manually, but has anybody automated this?

Thanks in advance!

Dieter Waelkens

[former_member182967 · Accepted solution]

Hi Dieter,

1. Set virtual IP with following command in primary site:

ip addr add 192.168.1.10/24 dev eth0

/sbin/arping -A -I eth0 192.168.1.10 -c 5

2. Move virtual IP during takeover, you can adjust the scripts mentioned in You can also use cluster software to automatically move the virtual IP (which enables automatically take over)

Regards,

Ning Tong