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openstack_loadbalancer.go
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openstack_loadbalancer.go
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/*
Copyright 2016 The Kubernetes Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package openstack
import (
"fmt"
"net"
"strings"
"time"
"github.com/golang/glog"
"github.com/gophercloud/gophercloud"
"github.com/gophercloud/gophercloud/openstack/networking/v2/extensions"
"github.com/gophercloud/gophercloud/openstack/networking/v2/extensions/layer3/floatingips"
"github.com/gophercloud/gophercloud/openstack/networking/v2/extensions/lbaas/members"
"github.com/gophercloud/gophercloud/openstack/networking/v2/extensions/lbaas/monitors"
"github.com/gophercloud/gophercloud/openstack/networking/v2/extensions/lbaas/pools"
"github.com/gophercloud/gophercloud/openstack/networking/v2/extensions/lbaas/vips"
"github.com/gophercloud/gophercloud/openstack/networking/v2/extensions/lbaas_v2/listeners"
"github.com/gophercloud/gophercloud/openstack/networking/v2/extensions/lbaas_v2/loadbalancers"
v2monitors "github.com/gophercloud/gophercloud/openstack/networking/v2/extensions/lbaas_v2/monitors"
v2pools "github.com/gophercloud/gophercloud/openstack/networking/v2/extensions/lbaas_v2/pools"
"github.com/gophercloud/gophercloud/openstack/networking/v2/extensions/security/groups"
"github.com/gophercloud/gophercloud/openstack/networking/v2/extensions/security/rules"
neutronports "github.com/gophercloud/gophercloud/openstack/networking/v2/ports"
"github.com/gophercloud/gophercloud/pagination"
"k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/util/wait"
"k8s.io/kubernetes/pkg/api/v1/service"
"k8s.io/kubernetes/pkg/cloudprovider"
)
// Note: when creating a new Loadbalancer (VM), it can take some time before it is ready for use,
// this timeout is used for waiting until the Loadbalancer provisioning status goes to ACTIVE state.
const (
// loadbalancerActive* is configuration of exponential backoff for
// going into ACTIVE loadbalancer provisioning status. Starting with 1
// seconds, multiplying by 1.2 with each step and taking 19 steps at maximum
// it will time out after 128s, which roughly corresponds to 120s
loadbalancerActiveInitDealy = 1 * time.Second
loadbalancerActiveFactor = 1.2
loadbalancerActiveSteps = 19
// loadbalancerDelete* is configuration of exponential backoff for
// waiting for delete operation to complete. Starting with 1
// seconds, multiplying by 1.2 with each step and taking 13 steps at maximum
// it will time out after 32s, which roughly corresponds to 30s
loadbalancerDeleteInitDealy = 1 * time.Second
loadbalancerDeleteFactor = 1.2
loadbalancerDeleteSteps = 13
activeStatus = "ACTIVE"
errorStatus = "ERROR"
ServiceAnnotationLoadBalancerFloatingNetworkId = "loadbalancer.openstack.org/floating-network-id"
// ServiceAnnotationLoadBalancerInternal is the annotation used on the service
// to indicate that we want an internal loadbalancer service.
// If the value of ServiceAnnotationLoadBalancerInternal is false, it indicates that we want an external loadbalancer service. Default to true.
ServiceAnnotationLoadBalancerInternal = "service.beta.kubernetes.io/openstack-internal-load-balancer"
)
// Deprecated; Since LBaaS v1 is deprecated in the OpenStack Liberty release, Kubernetes deprecated it at V1.8.
// TODO(FengyunPan): remove LBaaS v1 after kubernetes V1.9.
// LoadBalancer implementation for LBaaS v1
type LbaasV1 struct {
LoadBalancer
}
// LoadBalancer implementation for LBaaS v2
type LbaasV2 struct {
LoadBalancer
}
type empty struct{}
func networkExtensions(client *gophercloud.ServiceClient) (map[string]bool, error) {
seen := make(map[string]bool)
pager := extensions.List(client)
err := pager.EachPage(func(page pagination.Page) (bool, error) {
exts, err := extensions.ExtractExtensions(page)
if err != nil {
return false, err
}
for _, ext := range exts {
seen[ext.Alias] = true
}
return true, nil
})
return seen, err
}
func getFloatingIPByPortID(client *gophercloud.ServiceClient, portID string) (*floatingips.FloatingIP, error) {
opts := floatingips.ListOpts{
PortID: portID,
}
pager := floatingips.List(client, opts)
floatingIPList := make([]floatingips.FloatingIP, 0, 1)
err := pager.EachPage(func(page pagination.Page) (bool, error) {
f, err := floatingips.ExtractFloatingIPs(page)
if err != nil {
return false, err
}
floatingIPList = append(floatingIPList, f...)
if len(floatingIPList) > 1 {
return false, ErrMultipleResults
}
return true, nil
})
if err != nil {
if isNotFound(err) {
return nil, ErrNotFound
}
return nil, err
}
if len(floatingIPList) == 0 {
return nil, ErrNotFound
} else if len(floatingIPList) > 1 {
return nil, ErrMultipleResults
}
return &floatingIPList[0], nil
}
func getPoolByName(client *gophercloud.ServiceClient, name string) (*pools.Pool, error) {
opts := pools.ListOpts{
Name: name,
}
pager := pools.List(client, opts)
poolList := make([]pools.Pool, 0, 1)
err := pager.EachPage(func(page pagination.Page) (bool, error) {
p, err := pools.ExtractPools(page)
if err != nil {
return false, err
}
poolList = append(poolList, p...)
if len(poolList) > 1 {
return false, ErrMultipleResults
}
return true, nil
})
if err != nil {
if isNotFound(err) {
return nil, ErrNotFound
}
return nil, err
}
if len(poolList) == 0 {
return nil, ErrNotFound
} else if len(poolList) > 1 {
return nil, ErrMultipleResults
}
return &poolList[0], nil
}
func getVipByName(client *gophercloud.ServiceClient, name string) (*vips.VirtualIP, error) {
opts := vips.ListOpts{
Name: name,
}
pager := vips.List(client, opts)
vipList := make([]vips.VirtualIP, 0, 1)
err := pager.EachPage(func(page pagination.Page) (bool, error) {
v, err := vips.ExtractVIPs(page)
if err != nil {
return false, err
}
vipList = append(vipList, v...)
if len(vipList) > 1 {
return false, ErrMultipleResults
}
return true, nil
})
if err != nil {
if isNotFound(err) {
return nil, ErrNotFound
}
return nil, err
}
if len(vipList) == 0 {
return nil, ErrNotFound
} else if len(vipList) > 1 {
return nil, ErrMultipleResults
}
return &vipList[0], nil
}
func getLoadbalancerByName(client *gophercloud.ServiceClient, name string) (*loadbalancers.LoadBalancer, error) {
opts := loadbalancers.ListOpts{
Name: name,
}
pager := loadbalancers.List(client, opts)
loadbalancerList := make([]loadbalancers.LoadBalancer, 0, 1)
err := pager.EachPage(func(page pagination.Page) (bool, error) {
v, err := loadbalancers.ExtractLoadBalancers(page)
if err != nil {
return false, err
}
loadbalancerList = append(loadbalancerList, v...)
if len(loadbalancerList) > 1 {
return false, ErrMultipleResults
}
return true, nil
})
if err != nil {
if isNotFound(err) {
return nil, ErrNotFound
}
return nil, err
}
if len(loadbalancerList) == 0 {
return nil, ErrNotFound
} else if len(loadbalancerList) > 1 {
return nil, ErrMultipleResults
}
return &loadbalancerList[0], nil
}
func getListenersByLoadBalancerID(client *gophercloud.ServiceClient, id string) ([]listeners.Listener, error) {
var existingListeners []listeners.Listener
err := listeners.List(client, listeners.ListOpts{LoadbalancerID: id}).EachPage(func(page pagination.Page) (bool, error) {
listenerList, err := listeners.ExtractListeners(page)
if err != nil {
return false, err
}
for _, l := range listenerList {
for _, lb := range l.Loadbalancers {
if lb.ID == id {
existingListeners = append(existingListeners, l)
break
}
}
}
return true, nil
})
if err != nil {
return nil, err
}
return existingListeners, nil
}
// get listener for a port or nil if does not exist
func getListenerForPort(existingListeners []listeners.Listener, port v1.ServicePort) *listeners.Listener {
for _, l := range existingListeners {
if listeners.Protocol(l.Protocol) == toListenersProtocol(port.Protocol) && l.ProtocolPort == int(port.Port) {
return &l
}
}
return nil
}
// Get pool for a listener. A listener always has exactly one pool.
func getPoolByListenerID(client *gophercloud.ServiceClient, loadbalancerID string, listenerID string) (*v2pools.Pool, error) {
listenerPools := make([]v2pools.Pool, 0, 1)
err := v2pools.List(client, v2pools.ListOpts{LoadbalancerID: loadbalancerID}).EachPage(func(page pagination.Page) (bool, error) {
poolsList, err := v2pools.ExtractPools(page)
if err != nil {
return false, err
}
for _, p := range poolsList {
for _, l := range p.Listeners {
if l.ID == listenerID {
listenerPools = append(listenerPools, p)
}
}
}
if len(listenerPools) > 1 {
return false, ErrMultipleResults
}
return true, nil
})
if err != nil {
if isNotFound(err) {
return nil, ErrNotFound
}
return nil, err
}
if len(listenerPools) == 0 {
return nil, ErrNotFound
} else if len(listenerPools) > 1 {
return nil, ErrMultipleResults
}
return &listenerPools[0], nil
}
func getMembersByPoolID(client *gophercloud.ServiceClient, id string) ([]v2pools.Member, error) {
var members []v2pools.Member
err := v2pools.ListMembers(client, id, v2pools.ListMembersOpts{}).EachPage(func(page pagination.Page) (bool, error) {
membersList, err := v2pools.ExtractMembers(page)
if err != nil {
return false, err
}
members = append(members, membersList...)
return true, nil
})
if err != nil {
return nil, err
}
return members, nil
}
// Check if a member exists for node
func memberExists(members []v2pools.Member, addr string, port int) bool {
for _, member := range members {
if member.Address == addr && member.ProtocolPort == port {
return true
}
}
return false
}
func popListener(existingListeners []listeners.Listener, id string) []listeners.Listener {
for i, existingListener := range existingListeners {
if existingListener.ID == id {
existingListeners[i] = existingListeners[len(existingListeners)-1]
existingListeners = existingListeners[:len(existingListeners)-1]
break
}
}
return existingListeners
}
func popMember(members []v2pools.Member, addr string, port int) []v2pools.Member {
for i, member := range members {
if member.Address == addr && member.ProtocolPort == port {
members[i] = members[len(members)-1]
members = members[:len(members)-1]
}
}
return members
}
func getSecurityGroupName(clusterName string, service *v1.Service) string {
return fmt.Sprintf("lb-sg-%s-%v", clusterName, service.Name)
}
func getSecurityGroupRules(client *gophercloud.ServiceClient, opts rules.ListOpts) ([]rules.SecGroupRule, error) {
pager := rules.List(client, opts)
var securityRules []rules.SecGroupRule
err := pager.EachPage(func(page pagination.Page) (bool, error) {
ruleList, err := rules.ExtractRules(page)
if err != nil {
return false, err
}
securityRules = append(securityRules, ruleList...)
return true, nil
})
if err != nil {
return nil, err
}
return securityRules, nil
}
func waitLoadbalancerActiveProvisioningStatus(client *gophercloud.ServiceClient, loadbalancerID string) (string, error) {
backoff := wait.Backoff{
Duration: loadbalancerActiveInitDealy,
Factor: loadbalancerActiveFactor,
Steps: loadbalancerActiveSteps,
}
var provisioningStatus string
err := wait.ExponentialBackoff(backoff, func() (bool, error) {
loadbalancer, err := loadbalancers.Get(client, loadbalancerID).Extract()
if err != nil {
return false, err
}
provisioningStatus = loadbalancer.ProvisioningStatus
if loadbalancer.ProvisioningStatus == activeStatus {
return true, nil
} else if loadbalancer.ProvisioningStatus == errorStatus {
return true, fmt.Errorf("Loadbalancer has gone into ERROR state")
} else {
return false, nil
}
})
if err == wait.ErrWaitTimeout {
err = fmt.Errorf("Loadbalancer failed to go into ACTIVE provisioning status within alloted time")
}
return provisioningStatus, err
}
func waitLoadbalancerDeleted(client *gophercloud.ServiceClient, loadbalancerID string) error {
backoff := wait.Backoff{
Duration: loadbalancerDeleteInitDealy,
Factor: loadbalancerDeleteFactor,
Steps: loadbalancerDeleteSteps,
}
err := wait.ExponentialBackoff(backoff, func() (bool, error) {
_, err := loadbalancers.Get(client, loadbalancerID).Extract()
if err != nil {
if err == ErrNotFound {
return true, nil
} else {
return false, err
}
} else {
return false, nil
}
})
if err == wait.ErrWaitTimeout {
err = fmt.Errorf("Loadbalancer failed to delete within the alloted time")
}
return err
}
func toRuleProtocol(protocol v1.Protocol) rules.RuleProtocol {
switch protocol {
case v1.ProtocolTCP:
return rules.ProtocolTCP
case v1.ProtocolUDP:
return rules.ProtocolUDP
default:
return rules.RuleProtocol(strings.ToLower(string(protocol)))
}
}
func toListenersProtocol(protocol v1.Protocol) listeners.Protocol {
switch protocol {
case v1.ProtocolTCP:
return listeners.ProtocolTCP
default:
return listeners.Protocol(string(protocol))
}
}
func createNodeSecurityGroup(client *gophercloud.ServiceClient, nodeSecurityGroupID string, port int, protocol v1.Protocol, lbSecGroup string) error {
v4NodeSecGroupRuleCreateOpts := rules.CreateOpts{
Direction: rules.DirIngress,
PortRangeMax: port,
PortRangeMin: port,
Protocol: toRuleProtocol(protocol),
RemoteGroupID: lbSecGroup,
SecGroupID: nodeSecurityGroupID,
EtherType: rules.EtherType4,
}
v6NodeSecGroupRuleCreateOpts := rules.CreateOpts{
Direction: rules.DirIngress,
PortRangeMax: port,
PortRangeMin: port,
Protocol: toRuleProtocol(protocol),
RemoteGroupID: lbSecGroup,
SecGroupID: nodeSecurityGroupID,
EtherType: rules.EtherType6,
}
_, err := rules.Create(client, v4NodeSecGroupRuleCreateOpts).Extract()
if err != nil {
return err
}
_, err = rules.Create(client, v6NodeSecGroupRuleCreateOpts).Extract()
if err != nil {
return err
}
return nil
}
func (lbaas *LbaasV2) createLoadBalancer(service *v1.Service, name string, internalAnnotation bool) (*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 != "" && internalAnnotation {
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) GetLoadBalancer(clusterName string, service *v1.Service) (*v1.LoadBalancerStatus, bool, error) {
loadBalancerName := cloudprovider.GetLoadBalancerName(service)
loadbalancer, err := getLoadbalancerByName(lbaas.network, loadBalancerName)
if err == ErrNotFound {
return nil, false, nil
}
if loadbalancer == nil {
return nil, false, err
}
status := &v1.LoadBalancerStatus{}
status.Ingress = []v1.LoadBalancerIngress{{IP: loadbalancer.VipAddress}}
return status, true, err
}
// The LB needs to be configured with instance addresses on the same
// subnet as the LB (aka opts.SubnetId). Currently we're just
// guessing that the node's InternalIP is the right address - and that
// should be sufficient for all "normal" cases.
func nodeAddressForLB(node *v1.Node) (string, error) {
addrs := node.Status.Addresses
if len(addrs) == 0 {
return "", ErrNoAddressFound
}
for _, addr := range addrs {
if addr.Type == v1.NodeInternalIP {
return addr.Address, nil
}
}
return addrs[0].Address, nil
}
//getStringFromServiceAnnotation searches a given v1.Service for a specific annotationKey and either returns the annotation's value or a specified defaultSetting
func getStringFromServiceAnnotation(service *v1.Service, annotationKey string, defaultSetting string) string {
glog.V(4).Infof("getStringFromServiceAnnotation(%v, %v, %v)", service, annotationKey, defaultSetting)
if annotationValue, ok := service.Annotations[annotationKey]; ok {
//if there is an annotation for this setting, set the "setting" var to it
// annotationValue can be empty, it is working as designed
// it makes possible for instance provisioning loadbalancer without floatingip
glog.V(4).Infof("Found a Service Annotation: %v = %v", annotationKey, annotationValue)
return annotationValue
}
//if there is no annotation, set "settings" var to the value from cloud config
glog.V(4).Infof("Could not find a Service Annotation; falling back on cloud-config setting: %v = %v", annotationKey, defaultSetting)
return defaultSetting
}
// getSubnetIDForLB returns subnet-id for a specific node
func getSubnetIDForLB(compute *gophercloud.ServiceClient, node v1.Node) (string, error) {
ipAddress, err := nodeAddressForLB(&node)
if err != nil {
return "", err
}
instanceID := node.Spec.ProviderID
if ind := strings.LastIndex(instanceID, "/"); ind >= 0 {
instanceID = instanceID[(ind + 1):]
}
interfaces, err := getAttachedInterfacesByID(compute, instanceID)
if err != nil {
return "", err
}
for _, intf := range interfaces {
for _, fixedIP := range intf.FixedIPs {
if fixedIP.IPAddress == ipAddress {
return intf.NetID, nil
}
}
}
return "", ErrNotFound
}
// TODO: This code currently ignores 'region' and always creates a
// loadbalancer in only the current OpenStack region. We should take
// a list of regions (from config) and query/create loadbalancers in
// each region.
func (lbaas *LbaasV2) EnsureLoadBalancer(clusterName string, apiService *v1.Service, nodes []*v1.Node) (*v1.LoadBalancerStatus, error) {
glog.V(4).Infof("EnsureLoadBalancer(%v, %v, %v, %v, %v, %v, %v)", clusterName, apiService.Namespace, apiService.Name, apiService.Spec.LoadBalancerIP, apiService.Spec.Ports, nodes, apiService.Annotations)
if len(lbaas.opts.SubnetId) == 0 {
// Get SubnetId automatically.
// The LB needs to be configured with instance addresses on the same subnet, so get SubnetId by one node.
subnetID, err := getSubnetIDForLB(lbaas.compute, *nodes[0])
if err != nil {
glog.Warningf("Failed to find subnet-id for loadbalancer service %s/%s: %v", apiService.Namespace, apiService.Name, err)
return nil, fmt.Errorf("No subnet-id for service %s/%s : subnet-id not set in cloud provider config, "+
"and failed to find subnet-id from OpenStack: %v", apiService.Namespace, apiService.Name, err)
}
lbaas.opts.SubnetId = subnetID
}
ports := apiService.Spec.Ports
if len(ports) == 0 {
return nil, fmt.Errorf("no ports provided to openstack load balancer")
}
floatingPool := getStringFromServiceAnnotation(apiService, ServiceAnnotationLoadBalancerFloatingNetworkId, lbaas.opts.FloatingNetworkId)
glog.V(4).Infof("EnsureLoadBalancer using floatingPool: %v", floatingPool)
var internalAnnotation bool
internal := getStringFromServiceAnnotation(apiService, ServiceAnnotationLoadBalancerInternal, "true")
switch internal {
case "true":
glog.V(4).Infof("Ensure an internal loadbalancer service.")
internalAnnotation = true
case "false":
if len(floatingPool) != 0 {
glog.V(4).Infof("Ensure an external loadbalancer service.")
internalAnnotation = false
} else {
return nil, fmt.Errorf("floating-network-id or loadbalancer.openstack.org/floating-network-id should be specified when service.beta.kubernetes.io/openstack-internal-load-balancer is false")
}
default:
return nil, fmt.Errorf("unknow service.beta.kubernetes.io/openstack-internal-load-balancer annotation: %v, specify \"true\" or \"false\".",
internal)
}
// Check for TCP protocol on each port
// TODO: Convert all error messages to use an event recorder
for _, port := range ports {
if port.Protocol != v1.ProtocolTCP {
return nil, fmt.Errorf("Only TCP LoadBalancer is supported for openstack load balancers")
}
}
sourceRanges, err := service.GetLoadBalancerSourceRanges(apiService)
if err != nil {
return nil, err
}
if !service.IsAllowAll(sourceRanges) && !lbaas.opts.ManageSecurityGroups {
return nil, fmt.Errorf("Source range restrictions are not supported for openstack load balancers without managing security groups")
}
affinity := apiService.Spec.SessionAffinity
var persistence *v2pools.SessionPersistence
switch affinity {
case v1.ServiceAffinityNone:
persistence = nil
case v1.ServiceAffinityClientIP:
persistence = &v2pools.SessionPersistence{Type: "SOURCE_IP"}
default:
return nil, fmt.Errorf("unsupported load balancer affinity: %v", affinity)
}
name := cloudprovider.GetLoadBalancerName(apiService)
loadbalancer, err := getLoadbalancerByName(lbaas.network, name)
if err != nil {
if err != ErrNotFound {
return nil, fmt.Errorf("Error getting loadbalancer %s: %v", name, err)
}
glog.V(2).Infof("Creating loadbalancer %s", name)
loadbalancer, err = lbaas.createLoadBalancer(apiService, name, internalAnnotation)
if err != nil {
// Unknown error, retry later
return nil, fmt.Errorf("Error creating loadbalancer %s: %v", name, err)
}
} else {
glog.V(2).Infof("LoadBalancer %s already exists", name)
}
waitLoadbalancerActiveProvisioningStatus(lbaas.network, loadbalancer.ID)
lbmethod := v2pools.LBMethod(lbaas.opts.LBMethod)
if lbmethod == "" {
lbmethod = v2pools.LBMethodRoundRobin
}
oldListeners, err := getListenersByLoadBalancerID(lbaas.network, loadbalancer.ID)
if err != nil {
return nil, fmt.Errorf("Error getting LB %s listeners: %v", name, err)
}
for portIndex, port := range ports {
listener := getListenerForPort(oldListeners, port)
if listener == nil {
glog.V(4).Infof("Creating listener for port %d", int(port.Port))
listener, err = listeners.Create(lbaas.network, listeners.CreateOpts{
Name: fmt.Sprintf("listener_%s_%d", name, portIndex),
Protocol: listeners.Protocol(port.Protocol),
ProtocolPort: int(port.Port),
LoadbalancerID: loadbalancer.ID,
}).Extract()
if err != nil {
// Unknown error, retry later
return nil, fmt.Errorf("Error creating LB listener: %v", err)
}
waitLoadbalancerActiveProvisioningStatus(lbaas.network, loadbalancer.ID)
}
glog.V(4).Infof("Listener for %s port %d: %s", string(port.Protocol), int(port.Port), listener.ID)
// After all ports have been processed, remaining listeners are removed as obsolete.
// Pop valid listeners.
oldListeners = popListener(oldListeners, listener.ID)
pool, err := getPoolByListenerID(lbaas.network, loadbalancer.ID, listener.ID)
if err != nil && err != ErrNotFound {
// Unknown error, retry later
return nil, fmt.Errorf("Error getting pool for listener %s: %v", listener.ID, err)
}
if pool == nil {
glog.V(4).Infof("Creating pool for listener %s", listener.ID)
pool, err = v2pools.Create(lbaas.network, v2pools.CreateOpts{
Name: fmt.Sprintf("pool_%s_%d", name, portIndex),
Protocol: v2pools.Protocol(port.Protocol),
LBMethod: lbmethod,
ListenerID: listener.ID,
Persistence: persistence,
}).Extract()
if err != nil {
// Unknown error, retry later
return nil, fmt.Errorf("Error creating pool for listener %s: %v", listener.ID, err)
}
waitLoadbalancerActiveProvisioningStatus(lbaas.network, loadbalancer.ID)
}
glog.V(4).Infof("Pool for listener %s: %s", listener.ID, pool.ID)
members, err := getMembersByPoolID(lbaas.network, pool.ID)
if err != nil && !isNotFound(err) {
return nil, fmt.Errorf("Error getting pool members %s: %v", pool.ID, err)
}
for _, node := range nodes {
addr, err := nodeAddressForLB(node)
if err != nil {
if err == ErrNotFound {
// Node failure, do not create member
glog.Warningf("Failed to create LB pool member for node %s: %v", node.Name, err)
continue
} else {
return nil, fmt.Errorf("Error getting address for node %s: %v", node.Name, err)
}
}
if !memberExists(members, addr, int(port.NodePort)) {
glog.V(4).Infof("Creating member for pool %s", pool.ID)
_, err := v2pools.CreateMember(lbaas.network, pool.ID, v2pools.CreateMemberOpts{
ProtocolPort: int(port.NodePort),
Address: addr,
SubnetID: lbaas.opts.SubnetId,
}).Extract()
if err != nil {
return nil, fmt.Errorf("Error creating LB pool member for node: %s, %v", node.Name, err)
}
waitLoadbalancerActiveProvisioningStatus(lbaas.network, loadbalancer.ID)
} else {
// After all members have been processed, remaining members are deleted as obsolete.
members = popMember(members, addr, int(port.NodePort))
}
glog.V(4).Infof("Ensured pool %s has member for %s at %s", pool.ID, node.Name, addr)
}
// Delete obsolete members for this pool
for _, member := range members {
glog.V(4).Infof("Deleting obsolete member %s for pool %s address %s", member.ID, pool.ID, member.Address)
err := v2pools.DeleteMember(lbaas.network, pool.ID, member.ID).ExtractErr()
if err != nil && !isNotFound(err) {
return nil, fmt.Errorf("Error deleting obsolete member %s for pool %s address %s: %v", member.ID, pool.ID, member.Address, err)
}
waitLoadbalancerActiveProvisioningStatus(lbaas.network, loadbalancer.ID)
}
monitorID := pool.MonitorID
if monitorID == "" && lbaas.opts.CreateMonitor {
glog.V(4).Infof("Creating monitor for pool %s", pool.ID)
monitor, err := v2monitors.Create(lbaas.network, v2monitors.CreateOpts{
PoolID: pool.ID,
Type: string(port.Protocol),
Delay: int(lbaas.opts.MonitorDelay.Duration.Seconds()),
Timeout: int(lbaas.opts.MonitorTimeout.Duration.Seconds()),
MaxRetries: int(lbaas.opts.MonitorMaxRetries),
}).Extract()
if err != nil {
return nil, fmt.Errorf("Error creating LB pool healthmonitor: %v", err)
}
waitLoadbalancerActiveProvisioningStatus(lbaas.network, loadbalancer.ID)
monitorID = monitor.ID
} else if lbaas.opts.CreateMonitor == false {
glog.V(4).Infof("Do not create monitor for pool %s when create-monitor is false", pool.ID)
}
if monitorID != "" {
glog.V(4).Infof("Monitor for pool %s: %s", pool.ID, monitorID)
}
}
// All remaining listeners are obsolete, delete
for _, listener := range oldListeners {
glog.V(4).Infof("Deleting obsolete listener %s:", listener.ID)
// get pool for listener
pool, err := getPoolByListenerID(lbaas.network, loadbalancer.ID, listener.ID)
if err != nil && err != ErrNotFound {
return nil, fmt.Errorf("Error getting pool for obsolete listener %s: %v", listener.ID, err)
}
if pool != nil {
// get and delete monitor
monitorID := pool.MonitorID
if monitorID != "" {
glog.V(4).Infof("Deleting obsolete monitor %s for pool %s", monitorID, pool.ID)
err = v2monitors.Delete(lbaas.network, monitorID).ExtractErr()
if err != nil && !isNotFound(err) {
return nil, fmt.Errorf("Error deleting obsolete monitor %s for pool %s: %v", monitorID, pool.ID, err)
}
waitLoadbalancerActiveProvisioningStatus(lbaas.network, loadbalancer.ID)
}
// get and delete pool members
members, err := getMembersByPoolID(lbaas.network, pool.ID)
if err != nil && !isNotFound(err) {
return nil, fmt.Errorf("Error getting members for pool %s: %v", pool.ID, err)
}
if members != nil {
for _, member := range members {
glog.V(4).Infof("Deleting obsolete member %s for pool %s address %s", member.ID, pool.ID, member.Address)
err := v2pools.DeleteMember(lbaas.network, pool.ID, member.ID).ExtractErr()
if err != nil && !isNotFound(err) {
return nil, fmt.Errorf("Error deleting obsolete member %s for pool %s address %s: %v", member.ID, pool.ID, member.Address, err)
}
waitLoadbalancerActiveProvisioningStatus(lbaas.network, loadbalancer.ID)
}
}
glog.V(4).Infof("Deleting obsolete pool %s for listener %s", pool.ID, listener.ID)
// delete pool
err = v2pools.Delete(lbaas.network, pool.ID).ExtractErr()
if err != nil && !isNotFound(err) {
return nil, fmt.Errorf("Error deleting obsolete pool %s for listener %s: %v", pool.ID, listener.ID, err)
}
waitLoadbalancerActiveProvisioningStatus(lbaas.network, loadbalancer.ID)
}
// delete listener
err = listeners.Delete(lbaas.network, listener.ID).ExtractErr()
if err != nil && !isNotFound(err) {
return nil, fmt.Errorf("Error deleteting obsolete listener: %v", err)
}
waitLoadbalancerActiveProvisioningStatus(lbaas.network, loadbalancer.ID)
glog.V(2).Infof("Deleted obsolete listener: %s", listener.ID)
}
status := &v1.LoadBalancerStatus{}
status.Ingress = []v1.LoadBalancerIngress{{IP: loadbalancer.VipAddress}}
portID := loadbalancer.VipPortID
floatIP, err := getFloatingIPByPortID(lbaas.network, portID)
if err != nil && err != ErrNotFound {
return nil, fmt.Errorf("Error getting floating ip for port %s: %v", portID, err)
}
if floatIP == nil && floatingPool != "" && !internalAnnotation {
glog.V(4).Infof("Creating floating ip for loadbalancer %s port %s", loadbalancer.ID, portID)
floatIPOpts := floatingips.CreateOpts{
FloatingNetworkID: floatingPool,
PortID: portID,
}
loadBalancerIP := apiService.Spec.LoadBalancerIP
if loadBalancerIP != "" {
floatIPOpts.FloatingIP = loadBalancerIP
}
floatIP, err = floatingips.Create(lbaas.network, floatIPOpts).Extract()
if err != nil {
return nil, fmt.Errorf("Error creating LB floatingip %+v: %v", floatIPOpts, err)
}
}
if floatIP != nil {
status.Ingress = append(status.Ingress, v1.LoadBalancerIngress{IP: floatIP.FloatingIP})
}
if lbaas.opts.ManageSecurityGroups {
lbSecGroupCreateOpts := groups.CreateOpts{
Name: getSecurityGroupName(clusterName, apiService),
Description: fmt.Sprintf("Securty Group for %v Service LoadBalancer", apiService.Name),
}
lbSecGroup, err := groups.Create(lbaas.network, lbSecGroupCreateOpts).Extract()
if err != nil {
// cleanup what was created so far
_ = lbaas.EnsureLoadBalancerDeleted(clusterName, apiService)
return nil, err
}
for _, port := range ports {
for _, sourceRange := range sourceRanges.StringSlice() {
ethertype := rules.EtherType4
network, _, err := net.ParseCIDR(sourceRange)
if err != nil {
// cleanup what was created so far
glog.Errorf("Error parsing source range %s as a CIDR", sourceRange)
_ = lbaas.EnsureLoadBalancerDeleted(clusterName, apiService)
return nil, err
}
if network.To4() == nil {
ethertype = rules.EtherType6
}
lbSecGroupRuleCreateOpts := rules.CreateOpts{
Direction: rules.DirIngress,
PortRangeMax: int(port.Port),
PortRangeMin: int(port.Port),
Protocol: toRuleProtocol(port.Protocol),
RemoteIPPrefix: sourceRange,
SecGroupID: lbSecGroup.ID,
EtherType: ethertype,
}
_, err = rules.Create(lbaas.network, lbSecGroupRuleCreateOpts).Extract()
if err != nil {
// cleanup what was created so far
_ = lbaas.EnsureLoadBalancerDeleted(clusterName, apiService)
return nil, err
}
}
err := createNodeSecurityGroup(lbaas.network, lbaas.opts.NodeSecurityGroupID, int(port.NodePort), port.Protocol, lbSecGroup.ID)
if err != nil {
glog.Errorf("Error occured creating security group for loadbalancer %s:", loadbalancer.ID)
_ = lbaas.EnsureLoadBalancerDeleted(clusterName, apiService)
return nil, err
}
}
lbSecGroupRuleCreateOpts := rules.CreateOpts{
Direction: rules.DirIngress,
PortRangeMax: 4, // ICMP: Code - Values for ICMP "Destination Unreachable: Fragmentation Needed and Don't Fragment was Set"
PortRangeMin: 3, // ICMP: Type
Protocol: rules.ProtocolICMP,
RemoteIPPrefix: "0.0.0.0/0", // The Fragmentation packet can come from anywhere along the path back to the sourceRange - we need to all this from all
SecGroupID: lbSecGroup.ID,
EtherType: rules.EtherType4,
}
_, err = rules.Create(lbaas.network, lbSecGroupRuleCreateOpts).Extract()
if err != nil {
// cleanup what was created so far
_ = lbaas.EnsureLoadBalancerDeleted(clusterName, apiService)
return nil, err
}
lbSecGroupRuleCreateOpts = rules.CreateOpts{
Direction: rules.DirIngress,
PortRangeMax: 0, // ICMP: Code - Values for ICMP "Packet Too Big"
PortRangeMin: 2, // ICMP: Type
Protocol: rules.ProtocolICMP,
RemoteIPPrefix: "::/0", // The Fragmentation packet can come from anywhere along the path back to the sourceRange - we need to all this from all
SecGroupID: lbSecGroup.ID,
EtherType: rules.EtherType6,
}
_, err = rules.Create(lbaas.network, lbSecGroupRuleCreateOpts).Extract()
if err != nil {
// cleanup what was created so far
_ = lbaas.EnsureLoadBalancerDeleted(clusterName, apiService)
return nil, err
}
portID := loadbalancer.VipPortID
update_opts := neutronports.UpdateOpts{SecurityGroups: &[]string{lbSecGroup.ID}}
res := neutronports.Update(lbaas.network, portID, update_opts)