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All good sysadmins know about using tail -f to follow a log file. I use this all the time to follow /var/log/messages and my gluster logs in particular. Maybe everyone already knows this, but it deserves a PSA: after a certain amount of time (~days) it seems that new messages don’t appear!
What happens by default is that tail -f follows the file descriptor, not the file name, so when your log files get rotated, the file descriptor still points to the (now renamed) file which no longer gets updates any more.
The solution is to get tail to follow the file name you’re interested in:
tail --follow=name /var/log/messages
EDIT: Fortunately there is a shorter way of running this too, you can use:
on any up to date version of tail to get the same result. This adds in –retry to the –folllow=name argument.
2020 has not been a year we would have been able to predict. With a worldwide pandemic and lives thrown out of gear, as we head into 2021, we are thankful that our community and project continued to receive new developers, users and make small gains. For that and a...
It has been a while since we provided an update to the Gluster community. Across the world various nations, states and localities have put together sets of guidelines around shelter-in-place and quarantine. We request our community members to stay safe, to care for their loved ones, to continue to be...
The initial rounds of conversation around the planning of content for release 8 has helped the project identify one key thing – the need to stagger out features and enhancements over multiple releases. Thus, while release 8 is unlikely to be feature heavy as previous releases, it will be the...