21.5. Troubleshooting

EC2 provides an Alarm Status for each instance, indicating severe instance malfunction but the absence of such an alarm is no guarantee that the instance has started correctly and services are running properly. It is possible to use Amazon CloudWatch with its custom metric functionality to monitor instance services' health but use of an enterprise management solution is recommended. JBoss Operations Network (JON) can automatically discover, monitor and manage many services on an EC2 instance with the JON agent installed, including JBoss EAP 6 and its services: Tomcat, Httpd, PostgreSQL, etc. Since there's no difference between an EC-hosted or locally-hosted instance of JBoss EAP 6, established JON monitoring of both types of deployments is identical.