open-consul/lib/serf.go

28 lines
824 B
Go
Raw Normal View History

package lib
import (
"github.com/hashicorp/serf/serf"
2018-05-04 20:51:55 +00:00
"time"
)
// SerfDefaultConfig returns a Consul-flavored Serf default configuration,
// suitable as a basis for a LAN, WAN, segment, or area.
func SerfDefaultConfig() *serf.Config {
base := serf.DefaultConfig()
// This effectively disables the annoying queue depth warnings.
base.QueueDepthWarning = 1000000
// This enables dynamic sizing of the message queue depth based on the
// cluster size.
base.MinQueueDepth = 4096
2018-05-04 20:51:55 +00:00
// This gives leaves some time to propagate through the cluster before
// we shut down. The value was chosen to be reasonably short, but to
// allow a leave to get to over 99.99% of the cluster with 100k nodes
// (using https://www.serf.io/docs/internals/simulator.html).
base.LeavePropagateDelay = 3 * time.Second
return base
}