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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
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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 ?
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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.
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(220.8, 68%, 31%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EMC%3C/text%3E%3C/svg%3E)
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
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This answer has been deleted due to a violation of our Code of Conduct. The answer was manually reported or identified through automated detection before action was taken. Please refer to our Code of Conduct for more information.
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