GOALCheck the certificate expiration date for the Runtime Manager Agent.
Then you register a Runtime to Anypoint Runtime Manager through amc_setup command a certificate is created automatically in you <MULE_HOME>/conf folder. This certificate is unique your your environment and have a expiration date of two years from the moment that you register this Runtime for first time.
If this certificate expires could cause connectivity issues between the Runtime and Runtime Manager so keep present your expiration date to avoid possible issues.
In the mule agent version 1.10+ the expiration date will be shown in the Runtime Manager server dashboard and a button will be available to regenerate the certificate and extend the expiration date.
https://docs.mulesoft.com/runtime-manager/servers-cert-renewalPROCEDUREStep into the <MULE_HOME>/conf folder and perform the following command:
keytool -list -keystore mule-agent.jks -v
The command will ask for a password, just leave it blank and press enter.
Certificate expiration date and other relevant information will be shown as output.
Valid from: Mon Feb 27 16:24:53 ART 2015 until: Wed Feb 27 16:24:53 ART 2017
If your certificate has expired and you are not able to connect to Runtime Manager to generated a new one with the online functionality please follow the steps in the article:
Applications and Servers showing as unknown and disconnected state in Anypoint Runtime Manager due to expired key pair 
