For more information regarding the security incident at F5, the actions we are taking to address it, and our ongoing efforts to protect our customers, click here.

Forum Discussion

tickermcse76_16's avatar
tickermcse76_16
Icon for Nimbostratus rankNimbostratus
May 09, 2016

LTM pair says "in sync" but items missing on one unit

Have a 2 node LTM pair, where the standby unit status says "in sync". Also when I try to "sync group to device" standby, the action is not allowed as it's reported that "This action syncs the most r...
application delivery
BIG-IP
LTM
Kishore_Kumar_2's avatar
Kishore_Kumar_2
Icon for Cirrus rankCirrus
May 09, 2016

How to Verify the difference first

 

  • 1) Perform a VIMDIFF on both the config files
  • 2) Perform a MD5 Checksum on the config files to see if the values match
  • 3) Check the Objects in Active and Standby device

Procedure :

 

  • 1) Check if you save once you make changes in the Active device
  • 2) Perform a manual sync
  • 3) After VIMDIFF comparison, If there is no change - NO issues, If not look at the changes if they are recent - perform a config sync then Perform a VIMDIFF again.
  • 4) if MD5Checksum value is same. no issues, if they are different perform a SYNC from active.
  • 5) Check the Daemons responsible for Configsync CSSD, MCPD

https://support.f5.com/kb/en-us/solutions/public/13000/900/sol13946.html

 

Check Peer status - Config sync IP - Mirror IP

 

Please let me know if you still have not narrowed down the issue.

 

xhairs_248539's avatar
xhairs_248539
Icon for Nimbostratus rankNimbostratus
Feb 08, 2017

I wanted to reopen this as I have come across this same issue. The pairs are labelled "in sync" however one device has a different configuration than the other (an extra VS exists). At this time the active unit has the extra VS and the standby does not.

 

What causes this issue and how do we fix it? How can we trust the rest of our devices are in sync if we're seeing this problem way past the time this change was ever made?

 

Thanks!