Use HEAD health probes for Front Door backends#
Reliability · Front Door · Azure.FrontDoor.ProbeMethod
Configure health probes to use HEAD instead of GET requests.
Description#
Azure Front Door supports sending HEAD or GET requests for health probes to backend endpoints. HTTP HEAD requests are identical to GET requests except that the server does not send a response body. To lower load and performance cost against backends use HEAD requests.
Recommendation#
Consider configuring health probes to query backend health endpoints using HEAD requests.
Examples#
Configure with Azure CLI#
az network front-door probe update --front-door-name '<front_door>' -n '<probe_name>' -g '<resource_group>' --probeMethod 'HEAD'
Configure with Azure PowerShell#
$probeSetting = New-AzFrontDoorHealthProbeSettingObject -Name '<probe_name>' -HealthProbeMethod 'HEAD'
Set-AzFrontDoor -Name '<front_door>' -ResourceGroupName '<resource_group>' -HealthProbeSetting $probeSetting
Links#
- Supported HTTP methods for health probes
- How Front Door determines backend health
- Creating good health probes
- Health Endpoint Monitoring pattern
- Azure resource template
Last update: 2021-09-24