func (lbaas *LbaasV2) createLoadBalancer(service *v1.Service, name string) (*loadbalancers.LoadBalancer, error) {
createOpts := loadbalancers.CreateOpts{
Name: name,
Description: fmt.Sprintf("Kubernetes external service %s", name),
VipSubnetID: lbaas.opts.SubnetId,
}
loadBalancerIP := service.Spec.LoadBalancerIP
if loadBalancerIP != "" {
createOpts.VipAddress = loadBalancerIP
}
loadbalancer, err := loadbalancers.Create(lbaas.network, createOpts).Extract()
if err != nil {
return nil, fmt.Errorf("Error creating loadbalancer %v: %v", createOpts, err)
}
return loadbalancer, nil
}
func (lbaas *LbaasV2) EnsureLoadBalancer(apiService *api.Service, hosts []string) (*api.LoadBalancerStatus, error) {
glog.V(4).Infof("EnsureLoadBalancer(%v, %v, %v, %v, %v, %v)", apiService.Namespace, apiService.Name, apiService.Spec.LoadBalancerIP, apiService.Spec.Ports, hosts, apiService.Annotations)
ports := apiService.Spec.Ports
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")
}
affinity := api.ServiceAffinityNone //apiService.Spec.SessionAffinity
var persistence *v2_pools.SessionPersistence
switch affinity {
case api.ServiceAffinityNone:
persistence = nil
case api.ServiceAffinityClientIP:
persistence = &v2_pools.SessionPersistence{Type: "SOURCE_IP"}
default:
return nil, fmt.Errorf("unsupported load balancer affinity: %v", affinity)
}
sourceRanges, err := service.GetLoadBalancerSourceRanges(apiService)
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", cloudprovider.GetLoadBalancerName(apiService))
_, exists, err := lbaas.GetLoadBalancer(apiService)
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 := lbaas.EnsureLoadBalancerDeleted(apiService)
if err != nil {
return nil, fmt.Errorf("error deleting existing openstack load balancer: %v", err)
}
}
lbmethod := v2_pools.LBMethod(lbaas.opts.LBMethod)
if lbmethod == "" {
lbmethod = v2_pools.LBMethodRoundRobin
}
name := cloudprovider.GetLoadBalancerName(apiService)
createOpts := loadbalancers.CreateOpts{
Name: name,
Description: fmt.Sprintf("Kubernetes external service %s", name),
VipSubnetID: lbaas.opts.SubnetId,
}
loadBalancerIP := apiService.Spec.LoadBalancerIP
if loadBalancerIP != "" {
createOpts.VipAddress = loadBalancerIP
}
loadbalancer, err := loadbalancers.Create(lbaas.network, createOpts).Extract()
if err != nil {
// cleanup what was created so far
_ = lbaas.EnsureLoadBalancerDeleted(apiService)
return nil, err
}
waitLoadbalancerActiveProvisioningStatus(lbaas.network, loadbalancer.ID)
listener, err := listeners.Create(lbaas.network, listeners.CreateOpts{
Name: name,
Protocol: listeners.ProtocolTCP,
ProtocolPort: (int)(ports[0].Port), //TODO: need to handle multi-port
LoadbalancerID: loadbalancer.ID,
}).Extract()
if err != nil {
// cleanup what was created so far
_ = lbaas.EnsureLoadBalancerDeleted(apiService)
return nil, err
}
waitLoadbalancerActiveProvisioningStatus(lbaas.network, loadbalancer.ID)
pool, err := v2_pools.Create(lbaas.network, v2_pools.CreateOpts{
Name: name,
Protocol: v2_pools.ProtocolTCP,
LBMethod: lbmethod,
ListenerID: listener.ID,
Persistence: persistence,
}).Extract()
if err != nil {
// cleanup what was created so far
_ = lbaas.EnsureLoadBalancerDeleted(apiService)
return nil, err
}
for _, host := range hosts {
addr, err := getAddressByName(lbaas.compute, host)
if err != nil {
return nil, err
}
waitLoadbalancerActiveProvisioningStatus(lbaas.network, loadbalancer.ID)
_, err = v2_pools.CreateAssociateMember(lbaas.network, pool.ID, v2_pools.MemberCreateOpts{
ProtocolPort: int(ports[0].NodePort), //TODO: need to handle multi-port
Address: addr,
SubnetID: lbaas.opts.SubnetId,
}).Extract()
if err != nil {
// cleanup what was created so far
_ = lbaas.EnsureLoadBalancerDeleted(apiService)
return nil, err
}
}
if lbaas.opts.CreateMonitor {
waitLoadbalancerActiveProvisioningStatus(lbaas.network, loadbalancer.ID)
_, err = v2_monitors.Create(lbaas.network, v2_monitors.CreateOpts{
PoolID: pool.ID,
Type: monitors.TypeTCP,
Delay: int(lbaas.opts.MonitorDelay.Duration.Seconds()),
Timeout: int(lbaas.opts.MonitorTimeout.Duration.Seconds()),
MaxRetries: int(lbaas.opts.MonitorMaxRetries),
}).Extract()
if err != nil {
// cleanup what was created so far
_ = lbaas.EnsureLoadBalancerDeleted(apiService)
return nil, err
}
}
status := &api.LoadBalancerStatus{}
status.Ingress = []api.LoadBalancerIngress{{IP: loadbalancer.VipAddress}}
if lbaas.opts.FloatingNetworkId != "" {
portID, err := getPortIDByIP(lbaas.network, loadbalancer.VipAddress)
if err != nil {
// cleanup what was created so far
_ = lbaas.EnsureLoadBalancerDeleted(apiService)
return nil, err
}
floatIPOpts := floatingips.CreateOpts{
FloatingNetworkID: lbaas.opts.FloatingNetworkId,
PortID: portID,
}
floatIP, err := floatingips.Create(lbaas.network, floatIPOpts).Extract()
if err != nil {
// cleanup what was created so far
_ = lbaas.EnsureLoadBalancerDeleted(apiService)
return nil, err
}
status.Ingress = append(status.Ingress, api.LoadBalancerIngress{IP: floatIP.FloatingIP})
}
return status, nil
}