I have a Icinga monitoring, which can tell me the expiry date of SSL. But, I am looking to setup monitoring for root certificate or intermediate certificates. For example you can see at facebook’s SSL certs, in the screenshot below. I can set monitoring on SSL cert for site which is expiring on 8 December, 2021. But first two highlighted certs [root certificate or intermediate certificate], I cannot. Is there any way to do it on Icinga ? Can anyone please suggest me anything.
Thank you very much in advance.