Document Details
Application Gateway Backend Health Troubleshooting
This page contains Windows bias
About This Page
This page is part of the Azure documentation. It contains code examples and configuration instructions for working with Azure services.
Bias Analysis
Detected Bias Types
powershell_heavy
windows_first
windows_tools
missing_linux_example
Summary
The documentation page demonstrates a Windows bias by providing PowerShell commands as the primary or only CLI examples, referencing Windows-specific tools (e.g., certlm.msc, netstat via cmd), and giving step-by-step instructions for Windows environments before or instead of Linux equivalents. Linux commands and workflows are mentioned less frequently, often as secondary notes or not at all, leading to an imbalance in cross-platform guidance.
Recommendations
- For every PowerShell example, provide an equivalent Azure CLI and, where relevant, Bash/Linux shell command.
- When referencing Windows tools (e.g., certlm.msc, netstat in cmd), include parallel instructions for Linux (e.g., using openssl, ss, or netstat in a Linux shell).
- In troubleshooting steps, avoid phrases like 'by using a browser or PowerShell' and instead say 'by using a browser, PowerShell, Azure CLI, or Bash', with examples for each.
- When listing methods to check certificates or network connectivity, present Linux and Windows options together, or alternate which comes first.
- Add explicit Linux/Bash command examples for tasks like checking open ports, viewing certificates, and resolving DNS (e.g., 'ss -tlnp', 'openssl', 'dig' or 'nslookup').
- Ensure that all step-by-step instructions have Linux equivalents, not just Windows.
- Consider a dedicated section or callouts for Linux users where workflows differ significantly.
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Scan History
| Date | Scan | Status | Result |
|---|---|---|---|
| 2026-01-14 00:00 | #250 | in_progress |
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| 2026-01-13 00:00 | #246 | completed |
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| 2026-01-12 00:00 | #243 | cancelled |
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| 2026-01-11 00:00 | #240 | completed |
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| 2026-01-10 00:00 | #237 | completed |
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| 2026-01-09 00:34 | #234 | completed |
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| 2026-01-08 00:53 | #231 | completed |
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| 2026-01-06 18:15 | #225 | cancelled |
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| 2025-08-17 00:01 | #83 | cancelled |
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| 2025-07-13 21:37 | #48 | completed |
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| 2025-07-09 13:09 | #3 | cancelled |
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| 2025-07-08 04:23 | #2 | cancelled |
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Flagged Code Snippets
$vnet = Get-AzVirtualNetwork -Name "vnetName" -ResourceGroupName "rgName"
Get-AzVirtualNetworkSubnetConfig -Name appGwSubnet -VirtualNetwork $vnet
Proto Local Address Foreign Address State PID
TCP 0.0.0.0:80 0.0.0.0:0 LISTENING 4
PS C:\Users\testuser\> Get-AzApplicationGatewayBackendHealth -Name "appgw1" -ResourceGroupName "rgOne"
BackendAddressPools :
{Microsoft.Azure.Commands.Network.Models.PSApplicationGatewayBackendHealthPool}
BackendAddressPoolsText : [
{
"BackendAddressPool": {
"Id": "/subscriptions/aaaa0a0a-bb1b-cc2c-dd3d-eeeeee4e4e4e/resourceGroups/rgOne/providers/Microsoft.Network/applicationGateways/appgw1/b
ackendAddressPools/appGatewayBackendPool"
},
"BackendHttpSettingsCollection": [
{
"BackendHttpSettings": {
"TrustedRootCertificates": [],
"Id": "/subscriptions/aaaa0a0a-bb1b-cc2c-dd3d-eeeeee4e4e4e/resourceGroups/rgOne/providers/Microsoft.Network/applicationGateways/appg
w1/backendHttpSettingsCollection/appGatewayBackendHttpSettings"
},
"Servers": [
{
"Address": "10.0.0.5",
"Health": "Healthy"
},
{
"Address": "10.0.0.6",
"Health": "Unhealthy"
}
]
}
]
}
]
Get-AzEffectiveNetworkSecurityGroup -NetworkInterfaceName "nic1" -ResourceGroupName "testrg"
Get-AzEffectiveRouteTable -NetworkInterfaceName "nic1" -ResourceGroupName "testrg"