Forum Discussion
Nimbostratusbigip comes back active immediately after manual failover
I have the situation where after failing over active device to standby, standby device becomes active and immediately goes back to standby which means that the previously active device reverted back to active again even after the failover.
Any body can explain possible reasons such a situation can occur and possible causes. also ways to mitigate and fix it. Thank you.
10 Replies
What version of BIG-IP, please?
RyannnnnnnnnAltocumulus
If you look in the GUI under Device Management -> Traffic Groups -> Your Traffic Group, Properties is the "Auto Failback" check-box enabled or disabled?
Carlande_Desarmhi Ryan, i ve not checked that... could you please elaborate on the difference and relationship between when it's enabled or disabled when referring to that kind of manual failover issue? Thanks- If Auto Failback is enabled for the traffic group, after a failover event, the traffic group floats from the device that failed to the device that has taken over and is now active (the formerly standby device). When the device that failed comes back online again, the traffic group will automatically float back to it's "home" device, essentially causing another failover event from the perspective of connected clients. If Auto Failback is NOT enabled on the traffic group, then it will stay on whatever device it floats to on failover regardless of whether or not its "home" device is online again.
- Carlande_DesarmThanks all, so in this case, what is the f5 recommended best practice? Auto Failback enabled or disabled?
Ryan_80361Cirrostratus
If you look in the GUI under Device Management -> Traffic Groups -> Your Traffic Group, Properties is the "Auto Failback" check-box enabled or disabled?
- Carlande_Desarmhi Ryan, i ve not checked that... could you please elaborate on the difference and relationship between when it's enabled or disabled when referring to that kind of manual failover issue? Thanks
- If Auto Failback is enabled for the traffic group, after a failover event, the traffic group floats from the device that failed to the device that has taken over and is now active (the formerly standby device). When the device that failed comes back online again, the traffic group will automatically float back to it's "home" device, essentially causing another failover event from the perspective of connected clients. If Auto Failback is NOT enabled on the traffic group, then it will stay on whatever device it floats to on failover regardless of whether or not its "home" device is online again.
- Carlande_DesarmThanks all, so in this case, what is the f5 recommended best practice? Auto Failback enabled or disabled?
FYI...The Force to Standby feature should not be used when the HA group feature is enabled. Hope this helps.
https://support.f5.com/kb/en-us/solutions/public/14000/500/sol14515.html
