fleet - fleet ties together systemd and etcd into a distributed init system
fleet is no longer developed or maintained by CoreOS. After February 1, 2018, a fleet container image will continue to be available from the CoreOS Quay registry, but will not be shipped as part of Container Linux. CoreOS instead recommends Kubernetes for all clustering needs.fleet ties together systemd and etcd into a simple distributed init system. Think of it as an extension of systemd that operates at the cluster level instead of the machine level.