Which of the following is a simple way to achieve that goal?
Run another monitoring instance that pings the monitoring instance and fires a could watch alarm mat notifies your operations team should the primary monitoring instance become unhealthy.
Set a CloudWatch alarm based on EC2 system and instance status checks and have the alarm notify your operations team of any detected problem with the monitoring instance.
Set a CloudWatch alarm based on the CPU utilization of the monitoring instance and have the alarm notify your operations team if C r the CPU usage exceeds 50% few more than one minute: then have your monitoring application go into a CPU-bound loop should it Detect any application problems.
Have the monitoring instances post messages to an SOS queue and then dequeue those messages on another instance should the queue cease to have new messages, the second instance should first terminate the original monitoring instance start another backup monitoring instance and assume (he role of the previous monitoring instance and beginning adding messages to the SQSqueue.
Explanations:
Running another monitoring instance introduces complexity and unnecessary overhead. It’s not the simplest solution.
EC2 system and instance status checks directly monitor the health of the instance. This is a simple and effective solution.
Monitoring CPU utilization is not a reliable indicator of the health of the monitoring instance, and a CPU-bound loop is impractical.
This introduces complexity with SQS and multiple instances, which is not simple and requires more management overhead.
I evaluate that the answer is:
Set a CloudWatch alarm based on EC2 system and instance status checks and have the alarm notify your operations team of any detected problem with the monitoring instance.