Nagios will tell me when my certificate is a month within expiring. This is a standard nagios plugin. The cronjob runs nightly, checks if renewal is necessary (

Nagios will tell me when my certificate is a month within expiring. This is a standard nagios plugin. The cronjob runs nightly, checks if renewal is necessary (once a month, certificates valid for 3 months, so will renew when 2 months are still left) and then does its thing.