Question
How can I check the expiration date of the SSL certificate being used by my Controller?
Answer
1. Use the following command and change localhost:8181 to match the controller you are querying.
echo ^D |openssl s_client -connect localhost:8181 | openssl x509 -noout -enddate
2. You can also use: http://exchange.nagios.org/directory/Plugins/Network-Protocols/HTTP/check_ssl_certificate/details.
