Functions Not Executing¶

az functionapp function list --name "$APP_NAME" --resource-group "$RG" --output table
az functionapp config appsettings list --name "$APP_NAME" --resource-group "$RG" --output table
az monitor log-analytics query --workspace "$WORKSPACE_ID" --analytics-query "traces | where timestamp > ago(30m) | where cloud_RoleName =~ '$APP_NAME' | where message has_any ('disabled','listener','Host started','unable to start') | project timestamp, severityLevel, message | order by timestamp desc" --output table

Name             Trigger    IsDisabled
---------------  ---------  ----------
QueueProcessor   queue      true
health           http       false

Name                                              Value
------------------------------------------------  ----------------------------------------------------------------
AzureWebJobs.QueueProcessor.Disabled              true
AzureWebJobsStorage                               DefaultEndpointsProtocol=https;AccountName=***;AccountKey=***

timestamp                    severityLevel  message
---------------------------  -------------  ---------------------------------------------------------------------------------
2026-04-04T12:22:53.000000Z  3              Process reporting unhealthy: azure.functions.webjobs.storage: Unhealthy (AuthorizationPermissionMismatch)
2026-04-04T12:16:06.000000Z  2              The listener for function 'Functions.scheduled_cleanup' was unable to start.
2026-04-04T12:15:42.000000Z  2              Function 'QueueProcessor' is disabled via app setting 'AzureWebJobs.QueueProcessor.Disabled'.

let appName = "$APP_NAME";
requests
| where timestamp > ago(2h)
| where cloud_RoleName =~ appName
| where operation_Name startswith "Functions."
| where success == false
| project timestamp, operation_Id, FunctionName = operation_Name, resultCode, duration
| join kind=leftouter (
    exceptions
    | where timestamp > ago(2h)
    | where cloud_RoleName =~ appName
    | project operation_Id, ExceptionType = type, ExceptionMessage = outerMessage
) on operation_Id
| order by timestamp desc

let appName = "$APP_NAME";
traces
| where timestamp > ago(12h)
| where cloud_RoleName =~ appName
| where message has_any ("Host started", "Job host started", "Host shutdown", "Host is shutting down", "Stopping JobHost", "Host lock lease")
| project timestamp, severityLevel, message
| order by timestamp desc

# Function inventory and state
az functionapp function list --name "$APP_NAME" --resource-group "$RG" --output table
# App settings for disable and connection values
az functionapp config appsettings list --name "$APP_NAME" --resource-group "$RG" --output table
# Listener and startup trace scan
az monitor log-analytics query --workspace "$WORKSPACE_ID" --analytics-query "traces | where timestamp > ago(30m) | where cloud_RoleName =~ '$APP_NAME' | where message has_any ('disabled','listener','Host started','unable to start') | project timestamp, message | order by timestamp desc" --output table
# Runtime configuration
az functionapp config show --name "$APP_NAME" --resource-group "$RG" --output json
# Source activity sample (Storage)
az monitor metrics list --resource "/subscriptions/$SUBSCRIPTION_ID/resourceGroups/$RG/providers/Microsoft.Storage/storageAccounts/<storage-account-name>" --metric "Transactions" --interval PT5M --aggregation Total --output table

Name                                     Value
---------------------------------------  --------------------------------------------------------------
FUNCTIONS_EXTENSION_VERSION              ~4
FUNCTIONS_WORKER_RUNTIME                 python
AzureWebJobs.QueueProcessor.Disabled     true
QueueConnection                          DefaultEndpointsProtocol=https;AccountName=***;AccountKey=***

timestamp                    message
---------------------------  --------------------------------------------------------------------------------
2026-04-04T12:16:06.000000Z  The listener for function 'Functions.QueueProcessor' was unable to start.
2026-04-04T12:15:42.000000Z  Function 'QueueProcessor' is disabled via app setting 'AzureWebJobs.QueueProcessor.Disabled'.

az functionapp function list --name "$APP_NAME" --resource-group "$RG" --output table
az functionapp config appsettings list --name "$APP_NAME" --resource-group "$RG" --output table

let appName = "$APP_NAME";
traces
| where timestamp > ago(2h)
| where cloud_RoleName =~ appName
| where message has "is disabled via app setting"
| project timestamp, message
| order by timestamp desc

let appName = "$APP_NAME";
traces
| where timestamp > ago(2h)
| where cloud_RoleName =~ appName
| where message has_any ("listener", "unable to start", "AuthorizationPermissionMismatch", "Connection refused")
| project timestamp, severityLevel, message
| order by timestamp desc

az functionapp config appsettings list --name "$APP_NAME" --resource-group "$RG" --output table

let appName = "$APP_NAME";
traces
| where timestamp > ago(12h)
| where cloud_RoleName =~ appName
| where message has_any ("Host started", "Host is shutting down", "Stopping JobHost")
| summarize Starts=countif(message has "Host started"), Stops=countif(message has "shutting down" or message has "Stopping JobHost") by bin(timestamp, 1h)
| order by timestamp desc

az monitor log-analytics query --workspace "$WORKSPACE_ID" --analytics-query "traces | where timestamp > ago(2h) | where cloud_RoleName =~ '$APP_NAME' | where message has_any ('Host started','Host is shutting down') | project timestamp, message | order by timestamp desc" --output table

let appName = "$APP_NAME";
traces
| where timestamp > ago(2h)
| where cloud_RoleName =~ appName
| where message has_any ("Error indexing method", "Cannot bind", "binding", "extension")
| project timestamp, message
| order by timestamp desc

az functionapp config show --name "$APP_NAME" --resource-group "$RG" --output table
az functionapp config appsettings list --name "$APP_NAME" --resource-group "$RG" --output table

let appName = "$APP_NAME";
requests
| where timestamp > ago(1h)
| where cloud_RoleName =~ appName
| where operation_Name startswith "Functions."
| summarize Invocations=count() by FunctionName=operation_Name, bin(timestamp, 15m)
| order by timestamp desc

az monitor metrics list --resource "/subscriptions/$SUBSCRIPTION_ID/resourceGroups/$RG/providers/Microsoft.Storage/storageAccounts/<storage-account-name>" --metric "Transactions" --interval PT5M --aggregation Total --output table

az monitor log-analytics query --workspace "$WORKSPACE_ID" --analytics-query "traces | where timestamp > ago(2h) | where cloud_RoleName =~ '$APP_NAME' | where message has_any ('Worker process started and initialized','Failed to start language worker process','did not find functions with language','Host started') | project timestamp, message | order by timestamp desc" --output table
az functionapp config show --name "$APP_NAME" --resource-group "$RG" --output json

timestamp                    message
---------------------------  --------------------------------------------------------------------------------------
2026-04-04T12:30:00.000000Z  Failed to start language worker process for runtime: python.
2026-04-04T12:30:01.000000Z  Host started (64ms)
2026-04-04T12:30:03.000000Z  Host is shutting down.

az functionapp config appsettings delete --name "$APP_NAME" --resource-group "$RG" --setting-names "AzureWebJobs.QueueProcessor.Disabled"
az functionapp config appsettings set --name "$APP_NAME" --resource-group "$RG" --settings "QueueConnection=DefaultEndpointsProtocol=https;AccountName=***;AccountKey=***"
az functionapp restart --name "$APP_NAME" --resource-group "$RG"

let appName = "$APP_NAME";
union isfuzzy=true
(
    traces
    | where timestamp > ago(30m)
    | where cloud_RoleName =~ appName
    | where message has_any ("Listener started", "Host started", "unable to start", "disabled")
    | project timestamp, Kind="trace", Detail=message
),
(
    requests
    | where timestamp > ago(30m)
    | where cloud_RoleName =~ appName
    | where operation_Name startswith "Functions."
    | summarize Invocations=count(), Failures=countif(success == false) by operation_Name
    | project timestamp=now(), Kind="request-summary", Detail=strcat(operation_Name, " invocations=", tostring(Invocations), " failures=", tostring(Failures))
)
| order by timestamp desc