check-last-modified.rb can be used in conjunction with AWS to pull configuration from a specific bucket and file.
This is helpful if you do not want to configure connection information as an argument to the sensu checks. If a bucket and key are specified that the environment the sensu check executes in has access to, or you provide an AWS key and token, the checks will pull the specified JSON file from S3 and merge the JSON config in to the current check configuration.
check-https-cert.rb can be used to test for valid and successfully expired certs, amongst other things.
check-http.rb and check-https-cert.rb
This check is not really geared to check all of the complexities of ssl which is why there is a separate repo and set of checks for that: https://github.com/sensu-plugins/sensu-plugins-ssl. If you are trying to verify cert expiration you will notice that in some cases it does not do what you always expect it to do. For example it might appear that when using using
-k option you see different expiration times. This is due to the fact that when using
-k it does not check expiration of all of the certs in the chain. Rather than duplicate this behavior in this check use the other repo where we handle those more complicated ssl checks better. For more information see: https://github.com/sensu-plugins/sensu-plugins-http/issues/67