func (lb *LoadBalancer) CreateTCPLoadBalancer(name, region string, externalIP net.IP, ports []*api.ServicePort, hosts []string, affinity api.ServiceAffinity) (*api.LoadBalancerStatus, error) {
glog.V(4).Infof("CreateTCPLoadBalancer(%v, %v, %v, %v, %v, %v)", name, region, externalIP, ports, hosts, affinity)
if len(ports) > 1 {
return nil, fmt.Errorf("multiple ports are not yet supported in openstack load balancers")
}
var persistence *vips.SessionPersistence
switch affinity {
case api.ServiceAffinityNone:
persistence = nil
case api.ServiceAffinityClientIP:
persistence = &vips.SessionPersistence{Type: "SOURCE_IP"}
default:
return nil, fmt.Errorf("unsupported load balancer affinity: %v", affinity)
}
lbmethod := lb.opts.LBMethod
if lbmethod == "" {
lbmethod = pools.LBMethodRoundRobin
}
pool, err := pools.Create(lb.network, pools.CreateOpts{
Name: name,
Protocol: pools.ProtocolTCP,
SubnetID: lb.opts.SubnetId,
LBMethod: lbmethod,
}).Extract()
if err != nil {
return nil, err
}
for _, host := range hosts {
addr, err := getAddressByName(lb.compute, host)
if err != nil {
return nil, err
}
_, err = members.Create(lb.network, members.CreateOpts{
PoolID: pool.ID,
ProtocolPort: ports[0].Port, //TODO: need to handle multi-port
Address: addr,
}).Extract()
if err != nil {
pools.Delete(lb.network, pool.ID)
return nil, err
}
}
var mon *monitors.Monitor
if lb.opts.CreateMonitor {
mon, err = monitors.Create(lb.network, monitors.CreateOpts{
Type: monitors.TypeTCP,
Delay: int(lb.opts.MonitorDelay.Duration.Seconds()),
Timeout: int(lb.opts.MonitorTimeout.Duration.Seconds()),
MaxRetries: int(lb.opts.MonitorMaxRetries),
}).Extract()
if err != nil {
pools.Delete(lb.network, pool.ID)
return nil, err
}
_, err = pools.AssociateMonitor(lb.network, pool.ID, mon.ID).Extract()
if err != nil {
monitors.Delete(lb.network, mon.ID)
pools.Delete(lb.network, pool.ID)
return nil, err
}
}
createOpts := vips.CreateOpts{
Name: name,
Description: fmt.Sprintf("Kubernetes external service %s", name),
Protocol: "TCP",
ProtocolPort: ports[0].Port, //TODO: need to handle multi-port
PoolID: pool.ID,
Persistence: persistence,
}
if !externalIP.IsUnspecified() {
createOpts.Address = externalIP.String()
}
vip, err := vips.Create(lb.network, createOpts).Extract()
if err != nil {
if mon != nil {
monitors.Delete(lb.network, mon.ID)
}
pools.Delete(lb.network, pool.ID)
return nil, err
}
status := &api.LoadBalancerStatus{}
status.Ingress = []api.LoadBalancerIngress{{IP: vip.Address}}
return status, nil
}
func (lb *LoadBalancer) EnsureLoadBalancer(name, region string, loadBalancerIP net.IP, ports []*api.ServicePort, hosts []string, serviceName types.NamespacedName, affinity api.ServiceAffinity, annotations map[string]string) (*api.LoadBalancerStatus, error) {
glog.V(4).Infof("EnsureLoadBalancer(%v, %v, %v, %v, %v, %v, %v)", name, region, loadBalancerIP, ports, hosts, serviceName, annotations)
if len(ports) > 1 {
return nil, fmt.Errorf("multiple ports are not yet supported in openstack load balancers")
} else if len(ports) == 0 {
return nil, fmt.Errorf("no ports provided to openstack load balancer")
}
// The service controller verified all the protocols match on the ports, just check and use the first one
// TODO: Convert all error messages to use an event recorder
if ports[0].Protocol != api.ProtocolTCP {
return nil, fmt.Errorf("Only TCP LoadBalancer is supported for openstack load balancers")
}
var persistence *vips.SessionPersistence
switch affinity {
case api.ServiceAffinityNone:
persistence = nil
case api.ServiceAffinityClientIP:
persistence = &vips.SessionPersistence{Type: "SOURCE_IP"}
default:
return nil, fmt.Errorf("unsupported load balancer affinity: %v", affinity)
}
sourceRanges, err := service.GetLoadBalancerSourceRanges(annotations)
if err != nil {
return nil, err
}
if !service.IsAllowAll(sourceRanges) {
return nil, fmt.Errorf("Source range restrictions are not supported for openstack load balancers")
}
glog.V(2).Infof("Checking if openstack load balancer already exists: %s", name)
_, exists, err := lb.GetLoadBalancer(name, region)
if err != nil {
return nil, fmt.Errorf("error checking if openstack load balancer already exists: %v", err)
}
// TODO: Implement a more efficient update strategy for common changes than delete & create
// In particular, if we implement hosts update, we can get rid of UpdateHosts
if exists {
err := lb.EnsureLoadBalancerDeleted(name, region)
if err != nil {
return nil, fmt.Errorf("error deleting existing openstack load balancer: %v", err)
}
}
lbmethod := lb.opts.LBMethod
if lbmethod == "" {
lbmethod = pools.LBMethodRoundRobin
}
pool, err := pools.Create(lb.network, pools.CreateOpts{
Name: name,
Protocol: pools.ProtocolTCP,
SubnetID: lb.opts.SubnetId,
LBMethod: lbmethod,
}).Extract()
if err != nil {
return nil, err
}
for _, host := range hosts {
addr, err := getAddressByName(lb.compute, host)
if err != nil {
return nil, err
}
_, err = members.Create(lb.network, members.CreateOpts{
PoolID: pool.ID,
ProtocolPort: ports[0].NodePort, //TODO: need to handle multi-port
Address: addr,
}).Extract()
if err != nil {
pools.Delete(lb.network, pool.ID)
return nil, err
}
}
var mon *monitors.Monitor
if lb.opts.CreateMonitor {
mon, err = monitors.Create(lb.network, monitors.CreateOpts{
Type: monitors.TypeTCP,
Delay: int(lb.opts.MonitorDelay.Duration.Seconds()),
Timeout: int(lb.opts.MonitorTimeout.Duration.Seconds()),
MaxRetries: int(lb.opts.MonitorMaxRetries),
}).Extract()
if err != nil {
pools.Delete(lb.network, pool.ID)
return nil, err
}
_, err = pools.AssociateMonitor(lb.network, pool.ID, mon.ID).Extract()
if err != nil {
monitors.Delete(lb.network, mon.ID)
pools.Delete(lb.network, pool.ID)
return nil, err
}
}
createOpts := vips.CreateOpts{
Name: name,
Description: fmt.Sprintf("Kubernetes external service %s", name),
Protocol: "TCP",
ProtocolPort: ports[0].Port, //TODO: need to handle multi-port
PoolID: pool.ID,
SubnetID: lb.opts.SubnetId,
Persistence: persistence,
}
if loadBalancerIP != nil {
createOpts.Address = loadBalancerIP.String()
}
vip, err := vips.Create(lb.network, createOpts).Extract()
if err != nil {
if mon != nil {
monitors.Delete(lb.network, mon.ID)
}
pools.Delete(lb.network, pool.ID)
return nil, err
}
status := &api.LoadBalancerStatus{}
status.Ingress = []api.LoadBalancerIngress{{IP: vip.Address}}
if lb.opts.FloatingNetworkId != "" {
floatIPOpts := floatingips.CreateOpts{
FloatingNetworkID: lb.opts.FloatingNetworkId,
PortID: vip.PortID,
}
floatIP, err := floatingips.Create(lb.network, floatIPOpts).Extract()
if err != nil {
return nil, err
}
status.Ingress = append(status.Ingress, api.LoadBalancerIngress{IP: floatIP.FloatingIP})
}
return status, nil
}