dockered nginx instances show the following error under load:
2017/06/13 14:26:50 [alert] 4051#4051: epoll_wait() failed (1: Operation not permitted)
2017/06/13 14:26:50 [alert] 4051#4051: epoll_wait() failed (1: Operation not permitted)
2017/06/13 14:26:50 [alert] 4051#4051: epoll_wait() failed (1: Operation not permitted)
2017/06/13 14:26:50 [alert] 4051#4051: epoll_wait() failed (1: Operation not permitted)
2017/06/13 14:26:50 [alert] 4051#4051: epoll_wait() failed (1: Operation not permitted)
2017/06/13 14:26:50 [alert] 4051#4051: epoll_wait() failed (1: Operation not permitted)
2017/06/13 14:26:50 [alert] 4051#4051: epoll_wait() failed (1: Operation not permitted)
These images are based off of ubuntu 16.04 with nginx 1.11.12 installed.
PI for all CNs is 20170315T185612Z.