Why is nginx showing no signs of life?

Question

Nginx

Hello, this is the problem.
You need to install nginx with rtmp module. I do according to the guide from habr . But getting to the step of checking nginx is working and entering the command sudo service nginx start - nothing happens at all! I don't see a happy nginx greeting on 127.0.0.1. I'm new to Linux, so please help me with this issue. In /var/log/nginx/error.log I get the following:
2015/05/31 23:07:12 [notice] 14848#0: signal process started
2015/05/31 23:07:12 [error] 14848#0 : open() "/var/run/nginx.pid" failed (2: No such file or directory)

Answer 1

Is there a /var/run directory ?
If not, then create:
mkdir /var/run

Answer 2

See /var/log/syslog and/or /var/log/messages, depending on distribution