why postfix logs always empty?
If you delete a file that some process has a file handle to (which is what it uses to write to a file) but don't restart the process that is doing the writing then it will continue writing to the old file.
This is a common mistake that new unix admins make-- they may try to reclaim disk space by deleting a very large log file, not realizing that the space isn't actually available until the file is no longer open.
What I suspect happened (overnight) is that your syslog process was HUP'd by a cronjob, causing it to close all files and reopen them.
In the future, a safer way to truncate a log file that you truly don't care about is to do this:
> /var/log/that_logfile
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Admin
Updated on September 17, 2022Comments
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Admin almost 2 years
I'm newbie on UNIX/LINUX.
My postfix log file is at /var/log/maillog, yesterday i emptying the file using "1,$d" command and then ":wq!" from vi because the content to big for me to read, but then every postfix interactions does not logged into that file.
I try to remove that file and create it again with no luck.
Anyone can help me to solve this problem?
Thank you.
Best regards.
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Prix almost 14 yearsAre you saying that your file is too big and you can't read it, then you deleted it and now nothing is being registered to it (if i got it wrong please explain what you want and what is happening better, it is too confusing) ? try:
rm -rf /var/log/maillog; touch /var/log/maillog
as root to recreate it empty or if u dont want to erase the current file:mv /var/log/maillog /var/log/maillog.1; touch /var/log/maillog
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Admin almost 14 yearsThank you for your solution, but suddenly the postfix log is not empty anymore, i try to make some wrong configuration on postfix ^_^, quite strange.
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