OS Information: CentOS Linux release 7.9.2009 (Core)
Package Version: Graylog 4.2.3+553fadb
3. What steps have you already taken to try and solve the problem?
I don’t know why, checking timezone is correct, timestamp is correct,too.
but graylog only shows log 12hours ago , please help
To help you further, the community will need more information about you environment. This issue could be a couple different things such as your remote devices, input, configuration file/s, etc…
If your unsure what you need please take a look here.