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Log generated by Function Apps. It includes logs emitted by the Functions host and logs emitted by customer code. Use these logs to monitor application health, performance, and behavior.
Table attributes
| Attribute | Value |
|---|---|
| Resource types | microsoft.web/sites |
| Categories | Azure Resources, Applications |
| Solutions | LogManagement |
| Basic log | No |
| Ingestion-time transformation | Yes |
| Sample Queries | Yes |
Columns
| Column | Type | Description |
|---|---|---|
| ActivityId | string | The activity ID that logged the message. |
| AppName | string | The Function application name. |
| _BilledSize | real | The record size in bytes |
| Category | string | The log category name. |
| EventId | int | The event ID. |
| EventName | string | The event name. |
| ExceptionDetails | string | The exception details. This includes the exception type, message, and stack trace. |
| ExceptionMessage | string | The exception message. |
| ExceptionType | string | The exception type (e.g., System.InvalidOperationException). |
| FunctionInvocationId | string | The invocation ID that logged the message. |
| FunctionName | string | The name of the function that logged the message. |
| HostInstanceId | string | The host instance ID. |
| HostVersion | string | The Functions host version. |
| _IsBillable | string | Specifies whether ingesting the data is billable. When _IsBillable is false ingestion isn't billed to your Azure account |
| Level | string | The log level. Valid values are Trace, Debug, Information, Warning, Error, or Critical. |
| LevelId | int | The integer value of the log level. Valid values are 0 (Trace), 1 (Debug), 2 (Information), 3 (Warning), 4 (Error), or 5 (Critical). |
| Location | string | The location of the server that processed the request (e.g., China North). |
| Message | string | The log message. |
| ProcessId | int | The process ID. |
| _ResourceId | string | A unique identifier for the resource that the record is associated with |
| RoleInstance | string | The role instance ID. |
| SourceSystem | string | The type of agent the event was collected by. For example, OpsManager for Windows agent, either direct connect or Operations Manager, Linux for all Linux agents, or Azure for Azure Diagnostics |
| _SubscriptionId | string | A unique identifier for the subscription that the record is associated with |
| TenantId | string | The Log Analytics workspace ID |
| TimeGenerated | datetime | The timestamp (UTC) of the log. |
| Type | string | The name of the table |