Binary package “crossroads” in ubuntu trusty

open source load balance and fail over utility for TCP based services

 Crossroads is a daemon running in user space, and features extensive
 configurability, polling of back ends using 'wakeup calls', detailed status
 reporting, 'hooks' for special actions when backend calls fail, and much more.
 Crossroads is service-independent: it is usable for HTTP(S), SSH, SMTP, DNS,
 etc.. In the case of HTTP balancing, Crossroads can provide
 'session stickiness' for back end processes that need sessions, but aren't
 session-aware of other back ends.