BIND server serial number not updated

Please help with the following problem.

Serial number is not updated / incremented after I run "rndc reload"

Configuration:

OS: CentOS 7;

BIND: 9.11.4;

Port 53 is not blocked, listening, but my guess this is configuration problem not network;

Serial number example: "2021012809"

Execute: #rndc reload

     #server reload successful

     #rndc zonestatus myZone.com | grep serial

     #serial: 2020051510

All help appreciated. Thank you

Solution 1:

You need to update the serial number in the zone file yourself. BIND does not modify it. rndc reload simply tells BIND to reload zone information from files on the disk.