ubuntu 14.04 uses upstart as it's init system and upstart does 'interesting'
things to the ulimits, making it very hard to override them to enable coredumps
or allow more than 1024 files
It turns out that you have to add an entry to /etc/init/rsyslog.conf (not to be
confused with the script in /etc/init.d/rsyslog)
prior to the pre-start section, add a line like the following to enable
coredumps
limit core unlimited unlimited
to increase the filehandles
limit nofile 10000 10000
the first value is the soft limit, the second the hard limit
if enabling core dumps, you may want to force them to be written somewhere other
than /
add a line like the following to /etc/sysctl.conf
kernel.core_pattern = /var/log/core-%s-%p-%e
%p: pid
%%: output one '%'
%u: uid
%g: gid
%s: signal number
%t: UNIX time of dump
%h: hostname
%e: executable filename
David Lang
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