Linux Notes (69) - nginx smooth upgrade

If we want to upgrade nginx, it is impossible to stop the server to upgrade in a production environment, so a smooth upgrade is required

Smooth upgrade: During smooth upgrade, if there are worker processes that are processing requests, then these worker processes will continue to process, Stopped after processing. At the same time, nginx will no longer receive new requests. However, during the upgrade process, after the new worker process is started, requests will be received normally.

The so-called new working process here is the working process started after the upgrade

Check the nginx version

<code><span>.</span>/nginx <span>-V</span></code>

Download a higher version of ngxin, unzip it, and then compile it, but do not install it

<code><span>cd</span> ngin
./configure
make</code>

Do not execute make install

Then enter the objs directory. There is a file nginx here. Use this file to replace the original nginx under nginx/sbin/, and the upgrade will be successful.

Note that before replacing nginx, you must first back up the old version of nginx file to prevent accidents

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