I have a daemon writing to a log file that, eventually, fills up the disk. Is there a way for me to periodically limit the size of the log file without stopping the daemon without changing the code in it? SIGHUP kills the daemon.
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I have a daemon writing to a log file that, eventually, fills up the disk. Is there a way for me to periodically limit the size of the log file without stopping the daemon without changing the code in it? SIGHUP kills the daemon.
The usual trick is:
That would work provided that your daemon properly open the log file in append mode. Most of them do. (That command simply truncates file size to zero and that doesn’t intervene with another process writing to the file in append mode.)
Another option is to check whether your daemon support syslog and activate it. Most Linuxes now are shipped with some log collector which automatically (based on rules, etc) archive syslog files.