Check x509 Certificates Expiration


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Check x509 Certificate Expiration

A basic Nagios/Icinga plugin to check the expiry of an x509 certificate.

STARTTLS can be used by passing the appropriate protocol. Any protocol supported by your version of OpenSSL should work.


  • Python 3.6+

Plugin Installation

  • Download check_x509_expire to your PluginContribDir
  • Add/Import the CheckCommand configuration


  1. Fork the repo
  • Create a new feature branch
  1. Make your edits, commit and push
  2. Create a Pull Request

Or just create an Issue to report a bug or feature request