// RemoveInstanceFromDiscovery removes an instance from etcd discovery.
func RemoveInstanceFromDiscovery(i swarmtypes.Instance) error {
etcdMemberName, err := ssh.GetEtcd2MemberName(i.PublicIPAddress)
if err != nil {
return errgo.Mask(err)
}
// Not a quorum member
if etcdMemberName == "" {
return nil
}
discoveryUrl, err := ssh.GetEtcdDiscoveryUrl(i.PublicIPAddress)
if err != nil {
return errgo.Mask(err)
}
machineUrl := discoveryUrl + "/" + etcdMemberName
req, err := http.NewRequest("DELETE", machineUrl, nil)
if err != nil {
return errgo.Mask(err)
}
_, err = http.DefaultClient.Do(req)
if err != nil {
return errgo.Mask(err)
}
return nil
}
func runKillInstance(args []string) (exit int) {
if len(args) != 2 {
return exitError("wrong number of arguments. Usage: kocho kill-instance <swarm> <instance>")
}
swarmName := args[0]
instanceID := args[1]
s, err := swarmService.Get(swarmName, swarm.AWS)
if err != nil {
return exitError(fmt.Sprintf("couldn't get instances of swarm: %s", swarmName), err)
}
instances, err := s.GetInstances()
if err != nil {
return exitError(err)
}
killableInstance, err := swarmtypes.FindInstanceById(instances, instanceID)
if err != nil {
return exitError(errgo.WithCausef(err, nil, "failed to find provided instance: %s", instanceID))
}
runningInstances := swarmtypes.FilterInstanceById(instances, instanceID)
if len(runningInstances) == 0 {
return exitError(errgo.Newf("no more instances left in swarm %s. Cannot update Fleet DNS entry", swarmName))
}
if !ignoreQuorumCheck {
etcdQuorumID, err := ssh.GetEtcd2MemberName(killableInstance.PublicIPAddress)
if err != nil {
return exitError(errgo.WithCausef(err, nil, "ssh: failed to check quorum member list: %v", err))
}
if etcdQuorumID != "" {
return exitError(errgo.Newf("Instance %s seems to be part of the etcd quorum. Please remove it beforehand. See %s", killableInstance.Id, etcdDocsLink))
}
}
if err = s.KillInstance(killableInstance); err != nil {
return exitError(errgo.WithCausef(err, nil, "failed to kill instance: %s", instanceID))
}
if changed, err := dns.Update(dnsService, viperConfig.getDNSNamingPattern(), s, runningInstances); err != nil {
return exitError(errgo.WithCausef(err, nil, "failed to update dns records"))
} else if !changed {
return exitError(errgo.Newf("DNS not changed. Couldn't find valid publid DNS name"))
}
fmt.Printf(killInstanceSuccessMessage, killableInstance.Id, etcdDocsLink)
fireNotification()
return 0
}