If your instance is overused, it may fail health checks. If you over-utilize resources, there are several reasons why your health check might fail. There are a few common reasons for an instance's inactivity:
- CPU: All the preceding processes necessitate CPU time to work. The kernel cannot perform standard operating system activities if the CPU is used at 100% for an extended period of time.
- Networking: Your system won't be able to respond to ARP requests from status checks without networking. If this happens, your instance will not be able to communicate with other hosts.
