I don't remember why it was set to 077 initially, but now I see it
causes problems. Exactly, py-i2phosts-builer called from master creates
hosts.txt file with 600 permissions, so file is not readable by nginx
for example. New umask fixes this problem.
Master log file first opened as root, than daemonization with privilege
drop happens and master then unable to log to this logfile because of
insufficient permissions. So chown logfile to "runas" user to avoid this
situation.
