On Fri, Jan 22, 2010 at 1:43 PM, Mikhail T. <mi+t...@aldan.algebra.com> wrote: > Hello! > > Some of our web-servers take a while to restart (because some custom > modules need to login to database backends, etc.) This makes it > undesirable for us to use the SIGUSR1 (for graceful restart) and we > currently log to stdin of an easier to restart command-line utility. > > How hard would it be to implement a separate signal-handler, which > would -- upon receiving, say, SIGUSR2 -- reopen the log-files without > performing a full restart of each worker? That would provide for a > possibility to log straight into a file and rotate that once in a while > without a full restart of the httpds. > > Currently there are ap_run_open_logs and worker_open_logs. Can my > hypothetical signal-handler simply go through the list of opened > descriptors, set them to new values and close the old?
You'd need to do that in every child process, without interfering with current log file use. > > Or is this a "hairy" task, that some have tried, but nobody succeeded > in implementing? I'm not sure "hairy" captures the complexity adequately.
