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Im trying out the new diagnostic AppServiceHTTPLogs feature, to get http logs for a linux docker container. https://azure.github.io/AppService/2019/11/01/App-Service-Integration-with-Azure-Monitor.html
It seems like the CIp field (which I assume should contain the client IP) contains a local IP from azure, in my case 10.0.128.32, instead of the actual client ip. Is this by design or is it possible to get the real client ip somehow?
Without real client ip the http logs becomes much less useful, since its super tricky to connect log rows with each other.
Just to follow up Victor, we're actively investigating this issue. I'll post an update as soon as one is available.
yes, the server side logs do. They are in W3C Logging format.
See notes in:
https://learn.microsoft.com/en-us/azure/app-service/troubleshoot-diagnostic-logs
Good Luck!
Hi Victor,
I've heard from the product group. The CIp is currently being populated with the load balancer IP. This is why the address is a local IP instead of the HTTP request IP. Nonetheless, they will make the necessary changes to use the request IP address in an upcoming update.
UDPATED: The team has committed the fix and is awaiting deployment. It will take some time before it will be deployed to your region.
Thanks,
Ryan
It seems finding the clients access ips on an azure web app running Linux is harder than on windows , I found this explaining how to get list the ips but requires downtime of about 5 mins , isn’t there any other way ?
Ryan, is this something that was ever deployed? I have an App Service that lives behind an Application Gateway, and we only ever see internal IPs in the AppServiceHTTPLogs.
Is there some configuration we must perform to get the real client IP to appear in the CIp field?
Please disregard. I found the answer here: https://learn.microsoft.com/en-us/answers/questions/1181908/how-do-i-add-client-ip-to-http-logs-for-azure-app
Check server logs until load balancer is available. I look at the CIp rarely but have found W3C server logs as well.
Would this explain why I'm often seeing 10.0.128.x in my logs?
It doesn't appear all the time, the usual scenario is the page and associated others (images, css/js) are logged with the public IP of the client.
But I'm also seeing lots of instances where the page request has the client IP but associated requests have some form of 10.0.128.x
So is this a load balancer? Why does the client IP appear sometimes? What is the status of this change? Is there a way of ensuring the logs capture the client's IP?
Thank you in advances,
Matt
To retrieve the client IP address of your Azure Function, you need to inspect the HTTP request and check for the X–Forwarded-For request header. The X-Forwarded-For request header is a de-facto standard header for identifying the originating IP address of a client connecting to a web server through a proxy server. https://savefromig.id/
Client IP means proprietary systems, software, information, logos, services names, domain names, marks and copyrights the Client uses.
find server client IP
?> Determining IP Address using $_SERVER Variable Method : There is another way to get the IP Address by using the $_SERVER['REMOTE_ADDR'] or $_SERVER['REMOTE_HOST'] variables. The variable in the $_SERVER array is created by the web server such as apache and those can be used in PHP.