Log to stdout but not to /var/log/nginx/error.log

[Theja Vempalli]

Hi All,

Phusion Passenger makes all the content on stdout to be written to 

1. /var/log/nginx/error.log 
2. /var/log/syslog

My project is running inside docker container. The host that runs my docker container is configured in such a way that whatever written to stdout gets shown in sumologic. So if something goes wrong I can just see logs in sumologic rather than requesting operation team for logfiles.

But Phusion Passenger writes all the content to above 2 locations. Is it possible to have the logs written back to stdout instead of /var/log/nginx/error.log? My application is a Ruby (Sinatra) app.

Thanks,

Theja

[Cynthia Kiser]

Doesn't look like anyone answered you. I don't know the answer - but I was wondering if using Phusion's docker base images would solve your problem: 

https://github.com/phusion/passenger-docker

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Cynthia Kiser
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[Theja Vempalli]

Hi Cynthia,

Thanks for your response. I am using passenger-docker base images. By default these base images end up writing the log content to error.log and syslog. In my case I want them to be written to stdout but not to error.log and syslog. So I ended up symlinking error.log to stdout. Something like below:

ln -sf /dev/stdout /var/log/nginx/error.log

So symlinking it to stdout solved my problem. Also another approach to solve my issue is to run tail -f /var/log/nginx/error.log in background (this approach was suggested by one of the passenger phusion's authors)

Thanks