Compiling Nginx on production. How to do it without down time.

[Francis Daly]

On Fri, Oct 12, 2012 at 01:29:14PM -0700, Quintin Par wrote:

Hi there,

> Thanks for this. This looks a bit complicated.
> 
> I’d assume that “make install” will overwrite the executable and that will
> ensure everything. Or should I just go ahead and do service nginx restart

"make install" will replace the binary. It won't run the new binary.

After replacing the binary, you'll want to do something like

  kill -USR2 $(cat logs/nginx.pid)

And after testing that things are working as expected, then

  kill -WINCH $(cat logs/nginx.pid.oldbin)

followed eventually by

  kill -QUIT $(cat logs/nginx.pid.oldbin)

The "control.html" page has more details about how to handle problems.

"service nginx restart" probably doesn't do that sequence, and so probably
won't be 0-downtime. But you can use your test system to find a sequence
that works well enough for you.

	f
-- 
Francis Daly        francis at daoine.org