The Alert type field in infrastructure monitoring's Settings > Alerts page shows what options you can select to create infrastructure alert conditions. You can also create alert conditions from any infrastructure chart by selecting the ellipses icon and then Create alert.
Here are some examples of how to create alert conditions within the context of the Infrastructure monitoring UI page you are currently viewing. To create an alerts condition from any chart, select the ellipses icon and then Create alert. New Relic will automatically select the appropriate Alert type.
Problem and solution
High CPU usage
Your Ops team monitors a filtered set of host clusters in your eastern region and notices that the CPU usage is constantly high.
Use the CPU chart on Infrastructure monitoring's Hosts page to create an alert condition for system metrics.
Virtual memory capacity
Your night shift needs to be alerted when virtual memory for a set of background workers reaches an average of 10G for at least two minutes.
Use the Top memory consumers chart on Infrastructure monitoring's Processes page to create an alert condition for process metrics.
You want to monitor performance based on the average number of errors received or transmitted.
Use the Top bandwidth chart on Infrastructure monitoring's Network page to create an alert condition for network metrics.
I/O read and write operations
You are testing a new set of hosts in your staging environment, and you want to be notified when their read or write capacity rises above your test threshold level.
Use the Top I/O operations chart on Infrastructure monitoring's Storage page to create an alert condition for storage metrics.
Host not reporting
You want to be notified when we have stopped receiving data from an infrastructure agent.
Processes not running as expected
Use the thresholds dropdown for the selected Alert type to further define how you want to be alerted. Here are some examples of the options available.