Error in Kubernetes-proxy log

[redpine42]

Running DCOS 1.11 kubernetes 1.0.1-1.9.6. After launching kubernetes I see the following error in the kubernetes-proxy log. Startup is looking for a directory /var/log/nginx to exist. This directory does not exist in a generic Centos 7 install. Creating this directory on the nodes resolves the error at next launch.

I0323 15:49:06.166402 7 executor.cpp:651] Forked command at 12
nginx: [alert] could not open error log file: open() "/var/log/nginx/error.log" failed (2: No such file or directory)

[pires]

I believe this is harmless, right @bmcstdio?

[redpine42]

It doesn't cause any problems for me, but still an error.

[pires]

Not quite right. It just means the logfile doesn't exist and so it gets created.

[redpine42]

Directory is missing and the log file does not get created, nor the directory. I tested this.

So unless the directory is created prior to startup the log file does not get created.

[bmcustodio]

The error is harmless. It happens because, when starting and before reading the configuration file, NGINX tries to open that file because it is the default path it was compiled with. After reading the configuration NGINX uses the log file specified in the error_log directive, which in this case is /dev/stderr. That means you will see every subsequent error that may happen in stderr logs for the kubernetes-proxy task. There is no need to create any "physical" file or directory.

I am closing this issue as there's nothing else to see here.