Azure Web App Trace logs not appearing in log

Question

I am using Azure Web App Application Logging, and I followed the online tutorial, and made the following setup:

I get an exception and in my catch block I have the following code:

Trace.TraceError("abc");
Trace.TraceInformation("abc");
Trace.TraceWarning("abc");
Trace.WriteLine("abc");
Console.WriteLine("abc");

In the logs I get this:

2017-02-13 03:30:14 ~1ENGINEMAILERAPI GET /api/vfs/site/wwwroot/ _=1486950157594&X-ARR-LOG-ID=149fee3f-8da3-460e-816e-10e7a4b95f1d 443 - 121.121.23.217 Mozilla/5.0+(Windows+NT+6.3;+Win64;+x64)+AppleWebKit/537.36+(KHTML,+like+Gecko)+Chrome/56.0.2924.87+Safari/537.36 - https://web1.appsvcux.ext.azure.com/websites/WebsitesContent/WebsitesIndex?cacheability=3&defaultCloudName=azure&extensionName=WebsitesExtension&shellVersion=5.0.302.608%20(production%233ec7ddd.170201-1022)&traceStr=&region=southeastasia&flight=0&defaultCacheEvictionDelay=105000&websitesextension_enablemonitoringgroup=true&websitesextension_newauditlogs=true&websitesextension_resourcemenu=true&websitesextension_seetemplate=true&pageVersion=5.12.32.464175.170208-1137&l=en.en-us&trustedAuthority=portal.azure.com enginemailerapi.scm.azurewebsites.net 200 0 0 992 1923 62

How can I get my application logging to show up?

Answer 1

According to the log format of error message you provided, I assumed that the log file you provided is belongs to Web Server Logs ( under /LogFiles/http/RawLogs) which formatted using W3W Logging. Based on your configuration, you have both enabled file system and blob storage for Application Logging. You could retrieve your application logs as follows:

Application Logging (Filesystem)

For a simple way, you could leverage KUDU, click "Debug console > CMD" and cd LogFiles\Application, then you could retrieve your logs as follows:

Application Logging (Blob)

You could leverage Microsoft Azure Storage Explorer to retrieve your logs as follows:

UPDATE：