What happens to the candidate-config on the Passive Firewall when a config sync from the Active Firewall to the Passive Firewall fails?

What happens to the candidate-config on the Passive Firewall when a config sync from the Active Firewall to the Passive Firewall fails?

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Created On 07/06/20 02:07 AM - Last Modified 10/21/20 01:50 AM


Question


What happens to the candidate-config on the Passive Firewall when a config sync from the Active Firewall to the Passive Firewall fails?

 


Environment


  • Active Firewall triggers a HA Sync to the Passive Firewall, either after a commit or manually using "Sync to Peer".
  • The commit is received by the Passive Firewall as a HA Sync Job.
  • The HA Sync job on the Passive Firewall fails due to a failed commit.


Answer


NOTE:
This could be due to inconsistent management settings​​​​​​:
https://knowledgebase.paloaltonetworks.com/KCSArticleDetail?id=kA10g000000ClpuCAC

In such a scenario, even though the HA Sync job commit has failed on the Passive Firewall, the Passive Firewall still has the synced config from the Active in its candidate-config.

This can be seen using the following:
> show config candidate


The output will include the uncommitted changes which were synced from the peer Firewall as a result of the HA Sync.


Additional Information


  • The following also shows the candidate-configuration on the FW :-
> configure

# show


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