func resourceLBMemberV1Delete(d *schema.ResourceData, meta interface{}) error {
	config := meta.(*Config)
	networkingClient, err := config.networkingV2Client(d.Get("region").(string))
	if err != nil {
		return fmt.Errorf("Error creating OpenStack networking client: %s", err)
	}

	err = members.Delete(networkingClient, d.Id()).ExtractErr()
	if err != nil {
		CheckDeleted(d, err, "LB member")
	}

	stateConf := &resource.StateChangeConf{
		Pending:    []string{"ACTIVE", "PENDING_DELETE"},
		Target:     []string{"DELETED"},
		Refresh:    waitForLBMemberDelete(networkingClient, d.Id()),
		Timeout:    2 * time.Minute,
		Delay:      5 * time.Second,
		MinTimeout: 3 * time.Second,
	}

	_, err = stateConf.WaitForState()
	if err != nil {
		return fmt.Errorf("Error deleting OpenStack LB member: %s", err)
	}

	d.SetId("")
	return nil
}

func (lb *LoadBalancer) UpdateTCPLoadBalancer(name, region string, hosts []string) error {
	glog.V(4).Infof("UpdateTCPLoadBalancer(%v, %v, %v)", name, region, hosts)

	vip, err := getVipByName(lb.network, name)
	if err != nil {
		return err
	}

	// Set of member (addresses) that _should_ exist
	addrs := map[string]bool{}
	for _, host := range hosts {
		addr, err := getAddressByName(lb.compute, host)
		if err != nil {
			return err
		}

		addrs[addr] = true
	}

	// Iterate over members that _do_ exist
	pager := members.List(lb.network, members.ListOpts{PoolID: vip.PoolID})
	err = pager.EachPage(func(page pagination.Page) (bool, error) {
		memList, err := members.ExtractMembers(page)
		if err != nil {
			return false, err
		}

		for _, member := range memList {
			if _, found := addrs[member.Address]; found {
				// Member already exists
				delete(addrs, member.Address)
			} else {
				// Member needs to be deleted
				err = members.Delete(lb.network, member.ID).ExtractErr()
				if err != nil {
					return false, err
				}
			}
		}

		return true, nil
	})
	if err != nil {
		return err
	}

	// Anything left in addrs is a new member that needs to be added
	for addr := range addrs {
		_, err := members.Create(lb.network, members.CreateOpts{
			PoolID:       vip.PoolID,
			Address:      addr,
			ProtocolPort: vip.ProtocolPort,
		}).Extract()
		if err != nil {
			return err
		}
	}

	return nil
}

func resourceLBPoolV1Update(d *schema.ResourceData, meta interface{}) error {
	config := meta.(*Config)
	networkingClient, err := config.networkingV2Client(d.Get("region").(string))
	if err != nil {
		return fmt.Errorf("Error creating OpenStack networking client: %s", err)
	}

	var updateOpts pools.UpdateOpts
	// If either option changed, update both.
	// Gophercloud complains if one is empty.
	if d.HasChange("name") || d.HasChange("lb_method") {
		updateOpts.Name = d.Get("name").(string)
		updateOpts.LBMethod = d.Get("lb_method").(string)
	}

	log.Printf("[DEBUG] Updating OpenStack LB Pool %s with options: %+v", d.Id(), updateOpts)

	_, err = pools.Update(networkingClient, d.Id(), updateOpts).Extract()
	if err != nil {
		return fmt.Errorf("Error updating OpenStack LB Pool: %s", err)
	}

	if d.HasChange("monitor_ids") {
		oldMIDsRaw, newMIDsRaw := d.GetChange("security_groups")
		oldMIDsSet, newMIDsSet := oldMIDsRaw.(*schema.Set), newMIDsRaw.(*schema.Set)
		monitorsToAdd := newMIDsSet.Difference(oldMIDsSet)
		monitorsToRemove := oldMIDsSet.Difference(newMIDsSet)

		log.Printf("[DEBUG] Monitors to add: %v", monitorsToAdd)

		log.Printf("[DEBUG] Monitors to remove: %v", monitorsToRemove)

		for _, m := range monitorsToAdd.List() {
			_, err := pools.AssociateMonitor(networkingClient, d.Id(), m.(string)).Extract()
			if err != nil {
				return fmt.Errorf("Error associating monitor (%s) with OpenStack server (%s): %s", m.(string), d.Id(), err)
			}
			log.Printf("[DEBUG] Associated monitor (%s) with pool (%s)", m.(string), d.Id())
		}

		for _, m := range monitorsToRemove.List() {
			_, err := pools.DisassociateMonitor(networkingClient, d.Id(), m.(string)).Extract()
			if err != nil {
				return fmt.Errorf("Error disassociating monitor (%s) from OpenStack server (%s): %s", m.(string), d.Id(), err)
			}
			log.Printf("[DEBUG] Disassociated monitor (%s) from pool (%s)", m.(string), d.Id())
		}
	}

	if d.HasChange("member") {
		oldMembersRaw, newMembersRaw := d.GetChange("member")
		oldMembersSet, newMembersSet := oldMembersRaw.(*schema.Set), newMembersRaw.(*schema.Set)
		membersToAdd := newMembersSet.Difference(oldMembersSet)
		membersToRemove := oldMembersSet.Difference(newMembersSet)

		log.Printf("[DEBUG] Members to add: %v", membersToAdd)

		log.Printf("[DEBUG] Members to remove: %v", membersToRemove)

		for _, m := range membersToRemove.List() {
			oldMember := resourcePoolMemberV1(d, m)
			listOpts := members.ListOpts{
				PoolID:       d.Id(),
				Address:      oldMember.Address,
				ProtocolPort: oldMember.ProtocolPort,
			}
			err = members.List(networkingClient, listOpts).EachPage(func(page pagination.Page) (bool, error) {
				extractedMembers, err := members.ExtractMembers(page)
				if err != nil {
					return false, err
				}
				for _, member := range extractedMembers {
					err := members.Delete(networkingClient, member.ID).ExtractErr()
					if err != nil {
						return false, fmt.Errorf("Error deleting member (%s) from OpenStack LB pool (%s): %s", member.ID, d.Id(), err)
					}
					log.Printf("[DEBUG] Deleted member (%s) from pool (%s)", member.ID, d.Id())
				}
				return true, nil
			})
		}

		for _, m := range membersToAdd.List() {
			createOpts := resourcePoolMemberV1(d, m)
			newMember, err := members.Create(networkingClient, createOpts).Extract()
			if err != nil {
				return fmt.Errorf("Error creating LB member: %s", err)
			}
			log.Printf("[DEBUG] Created member (%s) in OpenStack LB pool (%s)", newMember.ID, d.Id())
		}
	}

	return resourceLBPoolV1Read(d, meta)
}

func (lb *LbaasV1) EnsureLoadBalancerDeleted(clusterName string, service *v1.Service) error {
	loadBalancerName := cloudprovider.GetLoadBalancerName(service)
	glog.V(4).Infof("EnsureLoadBalancerDeleted(%v, %v)", clusterName, loadBalancerName)

	vip, err := getVipByName(lb.network, loadBalancerName)
	if err != nil && err != ErrNotFound {
		return err
	}

	if lb.opts.FloatingNetworkId != "" && vip != nil {
		floatingIP, err := getFloatingIPByPortID(lb.network, vip.PortID)
		if err != nil && !isNotFound(err) {
			return err
		}
		if floatingIP != nil {
			err = floatingips.Delete(lb.network, floatingIP.ID).ExtractErr()
			if err != nil && !isNotFound(err) {
				return err
			}
		}
	}

	// We have to delete the VIP before the pool can be deleted,
	// so no point continuing if this fails.
	if vip != nil {
		err := vips.Delete(lb.network, vip.ID).ExtractErr()
		if err != nil && !isNotFound(err) {
			return err
		}
	}

	var pool *pools.Pool
	if vip != nil {
		pool, err = pools.Get(lb.network, vip.PoolID).Extract()
		if err != nil && !isNotFound(err) {
			return err
		}
	} else {
		// The VIP is gone, but it is conceivable that a Pool
		// still exists that we failed to delete on some
		// previous occasion.  Make a best effort attempt to
		// cleanup any pools with the same name as the VIP.
		pool, err = getPoolByName(lb.network, service.Name)
		if err != nil && err != ErrNotFound {
			return err
		}
	}

	if pool != nil {
		for _, monId := range pool.MonitorIDs {
			_, err = pools.DisassociateMonitor(lb.network, pool.ID, monId).Extract()
			if err != nil {
				return err
			}

			err = monitors.Delete(lb.network, monId).ExtractErr()
			if err != nil && !isNotFound(err) {
				return err
			}
		}
		for _, memberId := range pool.MemberIDs {
			err = members.Delete(lb.network, memberId).ExtractErr()
			if err != nil && !isNotFound(err) {
				return err
			}
		}
		err = pools.Delete(lb.network, pool.ID).ExtractErr()
		if err != nil && !isNotFound(err) {
			return err
		}
	}

	return nil
}

func (lb *LbaasV1) UpdateLoadBalancer(clusterName string, service *v1.Service, nodeNames []string) error {
	loadBalancerName := cloudprovider.GetLoadBalancerName(service)
	glog.V(4).Infof("UpdateLoadBalancer(%v, %v, %v)", clusterName, loadBalancerName, nodeNames)

	vip, err := getVipByName(lb.network, loadBalancerName)
	if err != nil {
		return err
	}

	// Set of member (addresses) that _should_ exist
	addrs := map[string]bool{}
	for _, nodeName := range nodeNames {
		addr, err := getAddressByName(lb.compute, types.NodeName(nodeName))
		if err != nil {
			return err
		}

		addrs[addr] = true
	}

	// Iterate over members that _do_ exist
	pager := members.List(lb.network, members.ListOpts{PoolID: vip.PoolID})
	err = pager.EachPage(func(page pagination.Page) (bool, error) {
		memList, err := members.ExtractMembers(page)
		if err != nil {
			return false, err
		}

		for _, member := range memList {
			if _, found := addrs[member.Address]; found {
				// Member already exists
				delete(addrs, member.Address)
			} else {
				// Member needs to be deleted
				err = members.Delete(lb.network, member.ID).ExtractErr()
				if err != nil {
					return false, err
				}
			}
		}

		return true, nil
	})
	if err != nil {
		return err
	}

	// Anything left in addrs is a new member that needs to be added
	for addr := range addrs {
		_, err := members.Create(lb.network, members.CreateOpts{
			PoolID:       vip.PoolID,
			Address:      addr,
			ProtocolPort: vip.ProtocolPort,
		}).Extract()
		if err != nil {
			return err
		}
	}

	return nil
}

func deleteMember(t *testing.T, memberID string) {
	res := members.Delete(base.Client, memberID)
	th.AssertNoErr(t, res.Err)
	t.Logf("Deleted member %s", memberID)
}