After detaching and attaching my interface, I notice that my HA Multizone Private IP setup is failing on AWS. How to debug this?

[Harihara Sudhan]

After detaching and attaching my interface, I notice that my HA Multizone Private IP setup is failing on AWS. How to debug this?

[Guest Farhan Ali]

In HA mulitzone private ip the device index of primary and secondary instances must be same. Some times when we detach and attach the interfaces the device index gets changed. due to which HA failover doesn't work(In older releases) or all the traffic is being routed ot Management interface(from 13.1-41.2 onwards). You can check the errors in /var/log/cloud-ha-daemon.log file.

Just check all the interfaces on the Primary and Secondary Netscalers. Go to Interfaces-> Check details-> Device Index. and match the interfaces of Primary and secondary . Both should have same device index value . Normally for 3 interfaces it will be

Primary->

Management Interface: - Device index =0

Client Interface:- Device index=1

Server interface:- Device index=2

Secondary->

Management Interface: - Device index =0

Client Interface:- Device index=1

Server interface:- Device index=2

In case you see different device index then you can detach the interfaces and attach them again sequentially. So that you see exact same device index on both primary and secondary for each interfaces