Enable Log Analytics on your Azure Container Apps environment

Having access to real-time monitoring data for the Container Apps environment is useful, but you’ll also need to record this data and analyze historical activity or events. To support this, you’ll enable Log Analytics, a feature of Azure Monitor.

Using Log Analytics, your Azure Container Apps environment can record:

Container console output (for example, stdout or stderr messages).
System logs generated by the Azure Container Apps environment.
Azure Springs App console logs.

To learn more about how Log Analytics works with Azure Container Apps, review:

Step-by-step guidance

If you’ve already successfully run the create-azure-resources.sh script discussed in the installation instructions, skip to step 2.

In your command-line environment, create a new Log Analytics workspace:

WORKSPACE=la-$APPNAME-$UNIQUEID
az monitor log-analytics workspace create \
    --resource-group $RESOURCE_GROUP \
    --workspace-name $WORKSPACE

Enable logging for your Azure Container Apps environment:

WORKSPACE_ID=$(az monitor log-analytics workspace show -n $WORKSPACE -g $RESOURCE_GROUP --query id -o tsv)
WORKSPACE_CUSTOMER_ID=$(az monitor log-analytics workspace show -n $WORKSPACE -g $RESOURCE_GROUP --query customerId -o tsv)
WORKSPACE_KEY=$(az monitor log-analytics workspace get-shared-keys -n $WORKSPACE -g $RESOURCE_GROUP --query primarySharedKey -o tsv)

az containerapp env update \
    --name $ACA_ENVIRONMENT \
    --resource-group $RESOURCE_GROUP \
    --logs-destination log-analytics \
    --logs-workspace-id $WORKSPACE_CUSTOMER_ID \
    --logs-workspace-key $WORKSPACE_KEY

Verify that monitoring data is available in your Log Analytics workspace. In your web browser, go to the Azure portal and then to your Container Apps instance. On the left pane, under Monitoring, select Logs.

From here, you can inspect the monitoring data generated by your app. To review the data in this log table, double-click ContainerAppConsoleLogs_CL or ContainerAppSystemLogs_CL and then select Run.

From this query screen, you can enter custom Kusto queries and then select Run.

For example, to get a list of all app logs, use the following query:
```
ContainerAppConsoleLogs_CL
```
To get logs for a specific app, use this query:
```
ContainerAppConsoleLogs_CL
| where ContainerAppName_s == 'your-container-app-name'
```
To get logs for the Eureka Server (discovery service), use this query:
```
ContainerAppSystemLogs_CL
| where ComponentType_s == "SpringCloudEureka"
```
To get logs for Spring Cloud Config Server, use this query:
```
ContainerAppSystemLogs_CL
| where ComponentType_s == "SpringCloudConfig"
```
The following query string returns errors and exceptions thrown by any of your applications:
```
ContainerAppConsoleLogs_CL
| where Log_s contains  "error" or Log_s contains "exception"
```