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Apache has a graceful option which can scan for modification in http.conf without restarting apache,what about nginx?

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up vote 56 down vote accepted

nginx supports the following signals :

TERM, INT - Quick shutdown
QUIT - Graceful shutdown
HUP - Configuration reload: Start the new worker processes with a new configuration, Gracefully shutdown the old worker processes
USR1 - Reopen the log files
USR2 - Upgrade Executable on the fly
WINCH - Gracefully shutdown the worker processes

HUP is what you are looking for, so sudo kill -HUP pid (nginx pid)

source : http://nginx.org/en/docs/control.html

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service nginx reload ?

P.S. Doesn't work on Windows.

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I wrote about how to restart nginx with zero downtime a while ago. This may be helpful for you.

http://tumblelog.jauderho.com/post/101514948/restart-nginx-with-zero-downtime

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4  
Your blog thing has no actual information. – Geuis Jun 20 '13 at 7:32
    
USR2 is for upgrading the executable, not for simple config reloading. – Brad May 22 '14 at 21:19

Use nginx -s reload

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^This 100%. Worked a charm. – Stephan Kristyn Sep 26 '13 at 12:00
    
This didn't take http basic authentication changes into effect for me. – Nick Rolando Mar 4 at 0:29

Usually nginx's init-script has reload action, i.e:

  • Linux /etc/init.d/nginx reload
  • FreeBSD /usr/local/etc/rc.d/nginx reload
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