I'm using Azure Webapp (Windows) to host a nodejs app. Inside my app, I'm using bunyan as my logger library.
I have configured App logging to Azure Storage Blog through the web portal. I selected the storage accounts, blob container, etc.
If I go to Log Stream, I do see the logs from my app in the portal. However, those logs are not being stored in the selected Blob container. There's a folder (inside the container) that was created by the app service and it does log things like when a new version of my app is deployed using a CSV file but that's all.
I've read my posts indicating that Nodejs is not supported for this environment (logging to blob storage). Is this true? Am I missing something?
For node.js websites the way to write application logs is by writing to the console using console.log('message') and console.error('message') which goes to Information/Error level log entries. Currently only supported target for the nodejs log files is the file system.
It looks as though you can't use blob storage for application logs in Azure Web Apps. However Azure blob storage adapters for popular nodejs loggers such as winston: winston-azure-blob-transport.
Related
My app service has an export scenario which extracts data from backend and writes to app service file storage first and egress the data to the blob later. These files are huge and sometimes more than 1GB of size. The current SKU of the app service is supporting 250GB and often running into storage problems because of these temp files creation.
Is there a way I could delete these files programmatically through kudu or may be by exposing another delete end point to delete selective files from the server?
How to delete files created by Azure app service automatically
You can delete files in Azure Web app service created by using kudu console by following the below work-around:
Then click on GO:
Then click on Debug Console:
Then click on CMD:
Then Click on delete:
Other References to delete files are:
Deleting old web app logs using Azure Web Jobs and PowerShell (swimburger.net)
Interacting with Azure Web Apps Virtual File System using PowerShell and the Kudu API – Kloud Blog
We are using spring boot app deployed in azure app service , App is using Logback by default and logging in console. Even though i have configured the storageV2 account to retreive the logs in blob storage , enabled to store logs in filesystem still i am not able to see the logs at any place. Is there any further configuration needed to be added in java app to get the logs ? Though i am getting web server related logs (url getting hit) but
app logs are not showing up.
This may be a simple question but I find the Azure documentation vast and a bit vague to advice would be appreciated.
So I've got docker container running in Azure app service. I have a linux container which is pushed to Azure container registry from our pipelines where it is then used by the web app. I can view the log stream which automatically displays the docker logs and I assume anything sent to standard out.
There are various logs files within the container on certain file paths. How can I access these logs? (Other than using ssh in Kudu to get into the container). Is there a way of mapping these file paths to one of the Azure log analytic tools?
Thanks - Please let me know if you need more information on any part of this setup.
Sending arbitrary file logs to log analytics from Azure App Service is not natively supported.
You could try setting up your container with the Log Analytics Agent which allows you to configure a custom logs data source, as long as your file has a compliant format.
There are two ways of managing log files in container.
Docker best practices will ask that ALL logs be redirected to the STDOUT. This allow commands like docker logs or az webapp log.
Note that there is a request to have to log files stores to a storage account: https://github.com/Azure/azure-cli/issues/10043
Also, what you could do, would be to mount a folder in your web app container into a storage account and ensure that those internal log files are store on the storage account: https://learn.microsoft.com/en-us/cli/azure/webapp/config/storage-account?view=azure-cli-latest#az-webapp-config-storage-account-add
https://learn.microsoft.com/en-us/azure/app-service/containers/how-to-serve-content-from-azure-storage
this would allow you to expose a storage account for your container
I deployed a nodejs web app on azure as an
App Service
How do i see the console.log from my application?
You can tail the log with the Azure CLI...
$ az webapp log tail --name <name of webapp> --resource-group <name of resource group>
More info here
I just followed Enable diagnostics logging to enable Application Logging (Filesystem), Application Logging (Blob) and found console.log and console.error would output logs under D:\home\LogFiles\Application\, you could use KUDU to view your log files or you could also access https://{your-app-name}.scm.azurewebsites.net/api/vfs/LogFiles/Application/index.html and check the stdout and stderr type as follows:
Moreover, as Azure Web App (Website) Logging - Tips and Tools mentioned about application logs for node.js as follows:
Setting application logs in the Azure portal
For node.js websites the way to write application logs is by writing to the console using console.log('message') and console.error('message') which goes to Information/Error level log entries. Currently the only supported target for the log files for node.js is the file system.
Other web site types like php and python are not supported for the application logs feature.
For logging into blob, you may leverage winston-azure-blob-transport for collecting the application logs from your Node.js web app into Azure Blob Storage.
You can open a Log Stream using the azure portal.
I have deployed my web app and the cloud service on windows azure. Web app saved some of the image files on its own directory lets say on root of the website there is folder name "Content" and web app save the image files on this folder. is there a way a cloud service can access files inside that folder? cloud service is separate project and hence has its own url and hosted on windows azure portal.
AFAIK, it is not possible to share files stored in a web app with a cloud service. What you should do instead is save the files in Blob Storage. That way both Web App and Cloud service can have access to the files.
Another option you have is Azure File Services, you will have the chance to used as a network shared location.
take a look at this here:
https://azure.microsoft.com/en-us/documentation/articles/storage-dotnet-how-to-use-files/