Restarting the web server without affecting users?

Question

There are several methods I can come up with for this:

Configuring the replica web server on a different port and / or IP, and then using DNS as a load balancer; restarting one server at a time
Using more explicit load balancing (which PaaS like Heroku and OpenShift use) with implicit replicas
Using the built-in mechanism (e.g. in nginx)

I work in an IaaS solution and am creating gitsome listeners to handle this entire installation.

+4

AT Oct 25 '13 at 0:41

1 answer

TroyCheng · Answer 1 · 2013-10-25T04:05:17+0000

The simpler the better, there is no silver bullet.

For a single server, a graceful restart mechanism may be helpful. He will start new processes to accept new requests and support old processes until the completion of old requests. Nginx already uses this, see http://wiki.nginx.org/CommandLine#Stopping_or_Restarting_Nginx
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