chronos

"Chronos is a replacement for cron. It is a distributed and fault-tolerant scheduler that runs on top of Apache Mesos that can be used for job orchestration." - https://mesos.github.io/chronos/

• Uses ISO 8601 Repeating Interval notation, but the P is required so you can only use the syntax Rn/<datespec>/PT4H - see http://mesos.github.io/chronos/docs/api.html#adding-a-scheduled-job