func (sw Swarm) Initialize(servers []string) (err error) {
var clusterContainers []*engine.Container
var engines []docker.Docker
// Ensure the cluster is in Store
if err = sw.Store.Write("/cluster", "", ""); err != nil {
return err
}
// Nodes
for _, server := range servers {
// Connect to Docker
log.Infoln("Connecting to Docker on:", server)
eng, err := docker.New(server, "")
engines = append(engines, eng)
if err != nil {
return err
}
// Agent
if _, err = sw.agent(server, eng); err != nil {
return err
}
}
// Manager
var swarmManager *engine.Container
for _, container := range clusterContainers {
if container.Name == "swarm_manager" {
swarmManager = container
break
}
}
if swarmManager == nil {
i := utils.PickServer(servers)
if swarmManager, err = sw.manager(servers[i], engines[i]); err != nil {
return
}
}
// Connect manager
log.Infoln("Connecting to Swarm manager on:", "tcp://"+swarmManager.Addr())
for i := 0; i < 3; i++ {
// We have to wait swarm manager to init
time.Sleep(200 * time.Millisecond)
_, err = docker.New("tcp://"+swarmManager.Addr(), "")
if err == nil {
break
}
}
if err != nil {
return
}
return sw.Store.Write("manager", swarmManager.Addr(), "cluster/docker/swarm")
}
