Apache error: command failed: failed to send file (file data)

Question

Hi there,

As soon as I made a DNS switch and started sending actual traffic to my new droplet, I am seeing the error above in the apache2 error.log

The droplet hosts quite a simple website: http://www.buxenger.com

Website language: ASP.NET MVC 5 Web server: apache 2.4.7 + mod_mono Droplet: 4GB/2CPUs/60GB - Ubuntu 14.04 Region: Amsterdam

The error appears about 15 times per second (probably for every request) which often causes website to not be accessible:

[Mon Apr 18 03:52:00.440277 2016] [:error] [pid 11518:tid 139913517295360] command failed: failed to send file (file data) [Mon Apr 18 03:52:02.218345 2016] [:error] [pid 11517:tid 139913458546432] command failed: failed to send file (file data) [Mon Apr 18 03:52:07.762463 2016] [:error] [pid 11518:tid 139913697634048] command failed: failed to send file (file data) [Mon Apr 18 03:52:11.683995 2016] [:error] [pid 11518:tid 139913592829696] command failed: failed to send file (file data) [Mon Apr 18 03:52:12.184825 2016] [:error] [pid 11518:tid 139913584436992] command failed: failed to send file (file data) [Mon Apr 18 03:52:13.055009 2016] [:error] [pid 11518:tid 139913542473472] command failed: failed to send file (file data) [Mon Apr 18 03:52:13.529260 2016] [:error] [pid 11518:tid 139913492117248] command failed: failed to send file (file data) [Mon Apr 18 03:52:20.346382 2016] [:error] [pid 11518:tid 139913475331840] command failed: failed to send file (file data) [Mon Apr 18 03:52:35.301164 2016] [:error] [pid 11517:tid 139913450153728] command failed: failed to send file (file data) [Mon Apr 18 03:52:40.852500 2016] [:error] [pid 11517:tid 139913576044288] command failed: failed to send file (file data) [Mon Apr 18 03:52:47.539626 2016] [:error] [pid 11518:tid 139913592829696] command failed: failed to send file (file data) [Mon Apr 18 03:52:49.706961 2016] [:error] [pid 11518:tid 139913517295360] command failed: failed to send file (file data) [Mon Apr 18 03:52:52.755013 2016] [:error] [pid 11517:tid 139913508902656] command failed: failed to send file (file data) [Mon Apr 18 03:52:55.512373 2016] [:error] [pid 11517:tid 139913559258880] command failed: failed to send file (file data) [Mon Apr 18 03:52:57.443673 2016] [:error] [pid 11517:tid 139913475331840] command failed: failed to send file (file data)

Any ideas appreciated.

rahmanian · Answer

hello did you find any solution for that ?

alexdo · Answer

Hello there,

Is the website built in a way that should load external content or send content from an external source? If yes then, this can explain the error in the log.

I also want to include great tutorials on Common Apache Errors and How To Troubleshoot Common Apache Errors that you can find really useful if you run into an Apache error and you need some help.

https://www.digitalocean.com/community/tutorial_series/common-apache-errors

https://www.digitalocean.com/community/tutorials/how-to-troubleshoot-common-apache-errors

Also, this question was previously posted and answered by Bobby which you can check here:

https://www.digitalocean.com/community/questions/how-to-troubleshoot-common-apache-issues-on-linux-server

Feel free to then share the output of the commands listed in that tutorial.

Hope that this helps!