Comment 2 for bug 1979539

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Giuseppe Petralia (peppepetra) wrote (last edit ): Re: Add Nrpe check for monitoring expiration of certs

Hi Frode, thanks for your reply.

If I read correctly you are suggesting to implement the check on the application providing the certs, which in our cases for OVN is 100% of times Vault.

I see some pros and cons of this choice:

Pros:
* we get out of the box monitoring for all certs provided by Vault, i.e. OpenStack API certs, Octavia certs, OVN certs etc.

Cons:
* We are only monitoring the certs that are in Vault. If the distribution of these certs fails, see LP#1940549, our monitoring will miss that as it will think the certs are all renewed but in reality the certs in the ovn-chassis or ovn-central units are still the old ones as Vault failed to provide the updated ones.

To be on the safe side, I think we should always monitor what is actually being used by the applications so I would like to see these checks in the OVN charms.