If you have been debugging and digging into the Nginx logs, you might have stumbled upon the following notice log message:
2022/03/10 06:04:32 [notice] 31447#31447: using inherited sockets from "6;7;8;9;
I’ll try to explain it briefly.
First of all, notice is a severity= parameter value, meaning it defines the severity level of syslog messages. Notice presents the casual log messages. Overall, there are seven values in order of increasing severity: debug, info, notice, warn, error (being the default one), crit, alert and emerg.
using inherited sockets from message means that the current Nginx binary is being replaced by a new one on the fly, therefore gaining control over the listening sockets. This message usually appears when there is an Nginx upgrade to a newer version, or adding/removing server modules. So, you have nothing to worry about.
Read more about Upgrading To a New Binary On The Fly.
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