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Skuba_85554's avatar
Skuba_85554
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Jun 23, 2011

sync problem that caused an outage

hi everyone

 

 

we have a pair of ltm devices (big-ip 9.3.1 build 69.0) in an active/passive cluster. we recently experienced a strange issue whereby the config on the active unit disappeared when we synchronized the units i.e. all virtual servers, pools, etc were not visible in the gui, and the running config file was 0KB. the steps we take when making changes are as follows...

 

 

1. Log onto both units in the cluster and confirm which one is active:

 

b fo

 

 

2. On the active unit, sync the config to the standby unit:

 

b config sync all

 

 

3. Go to the standby unit and save the current config:

 

bigpipe list > ~/configs/bigip.conf.example1

 

 

4. Make the config changes on the standby unit

 

 

5. Save the config changes on the standby unit:

 

b save

 

 

6. Backup the new config on the standby unit:

 

bigpipe list > ~/configs/bigip.conf.example2

 

 

7. Verify the new config on the standby unit:

 

b verify load bigip.conf.example2

 

 

8. Load the new config on the standby unit:

 

b load bigip.conf.example2

 

 

9. Sync the new config from the standby unit to the active unit:

 

b config sync all

 

 

has anyone seen anything like this before? obviously because the active unit didn't suffer a fault the units didn't failover, and therefore we experienced an outage until we manually restored the config on the active unit

 

 

thanks

 

4 Replies

  • Hi Skuba,

     

     

    At which point did the config go blank?

     

     

    Aaron
  • Hi Skuba,

     

    Are you configured for failover via Network failover or Serial Cable? A college of mine said that it occurred with him and it turned out to be a network cable. He has then switched towards serial cable.

     

     

    Bhattman
  • hi

     

     

    the config never went blank on the standby unit, only on the active one immediately after the sync. it's like the sync wiped the config on the active unit

     

     

    we are using a network cable for failover

     

     

    thanks
  • hi

     

     

    the config never went blank on the standby unit, only on the active one immediately after the sync. it's like the sync wiped the config on the active unit

     

     

    we are using a network cable for failover

     

     

    thanks