elasticsearch ulimit: error setting limit
解决：
My understanding is that /etc/security/limits.conf applies to login shells - but if you‘ve installed docker via apt-get, it‘s started by Upstart. I‘ve added the following line to my /etc/init/docker.conf, which works for me and restart docker:
elasticsearch ulimit: error setting limit
原文：http://my.oschina.net/zuoan001/blog/356613