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node ipam controller for ipv6 dualstack

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This commit is contained in:
Khaled Henidak(Kal)
2019-06-11 16:04:50 +00:00
parent 81468e2696
commit 584d7103e2
11 changed files with 518 additions and 290 deletions
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43
pkg/controller/nodeipam/node_ipam_controller.go
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@@ -55,10 +55,10 @@ const (
type Controller struct {
allocatorType ipam.CIDRAllocatorType
cloud cloudprovider.Interface
clusterCIDR *net.IPNet
serviceCIDR *net.IPNet
kubeClient clientset.Interface
cloud cloudprovider.Interface
clusterCIDRs []*net.IPNet
serviceCIDR *net.IPNet
kubeClient clientset.Interface
// Method for easy mocking in unittest.
lookupIP func(host string) ([]net.IP, error)
@@ -79,7 +79,7 @@ func NewNodeIpamController(
nodeInformer coreinformers.NodeInformer,
cloud cloudprovider.Interface,
kubeClient clientset.Interface,
clusterCIDR *net.IPNet,
clusterCIDRs []*net.IPNet,
serviceCIDR *net.IPNet,
nodeCIDRMaskSize int,
allocatorType ipam.CIDRAllocatorType) (*Controller, error) {
@@ -101,13 +101,22 @@ func NewNodeIpamController(
metrics.RegisterMetricAndTrackRateLimiterUsage("node_ipam_controller", kubeClient.CoreV1().RESTClient().GetRateLimiter())
}
// Cloud CIDR allocator does not rely on clusterCIDR or nodeCIDRMaskSize for allocation.
if allocatorType != ipam.CloudAllocatorType {
// Cloud CIDR allocator does not rely on clusterCIDR or nodeCIDRMaskSize for allocation.
if clusterCIDR == nil {
if len(clusterCIDRs) == 0 {
klog.Fatal("Controller: Must specify --cluster-cidr if --allocate-node-cidrs is set")
}
if maskSize, _ := clusterCIDR.Mask.Size(); maskSize > nodeCIDRMaskSize {
klog.Fatal("Controller: Invalid --cluster-cidr, mask size of cluster CIDR must be less than --node-cidr-mask-size")
// TODO: (khenidak) IPv6DualStack beta:
// - modify mask to allow flexible masks for IPv4 and IPv6
// - for alpha status they are the same
// for each cidr, node mask size must be < cidr mask
for _, cidr := range clusterCIDRs {
mask := cidr.Mask
if maskSize, _ := mask.Size(); maskSize > nodeCIDRMaskSize {
klog.Fatal("Controller: Invalid --cluster-cidr, mask size of cluster CIDR must be less than --node-cidr-mask-size")
}
}
}
@@ -115,7 +124,7 @@ func NewNodeIpamController(
cloud: cloud,
kubeClient: kubeClient,
lookupIP: net.LookupIP,
clusterCIDR: clusterCIDR,
clusterCIDRs: clusterCIDRs,
serviceCIDR: serviceCIDR,
allocatorType: allocatorType,
}
@@ -133,7 +142,16 @@ func NewNodeIpamController(
case ipam.IPAMFromCloudAllocatorType:
cfg.Mode = nodesync.SyncFromCloud
}
ipamc, err := ipam.NewController(cfg, kubeClient, cloud, clusterCIDR, serviceCIDR, nodeCIDRMaskSize)
// we may end up here with no cidr at all in case of FromCloud/FromCluster
var cidr *net.IPNet
if len(clusterCIDRs) > 0 {
cidr = clusterCIDRs[0]
}
if len(clusterCIDRs) > 1 {
klog.Warningf("Multiple cidrs were configured with FromCluster or FromCloud. cidrs except first one were discarded")
}
ipamc, err := ipam.NewController(cfg, kubeClient, cloud, cidr, serviceCIDR, nodeCIDRMaskSize)
if err != nil {
klog.Fatalf("Error creating ipam controller: %v", err)
}
@@ -142,8 +160,7 @@ func NewNodeIpamController(
}
} else {
var err error
ic.cidrAllocator, err = ipam.New(
kubeClient, cloud, nodeInformer, ic.allocatorType, ic.clusterCIDR, ic.serviceCIDR, nodeCIDRMaskSize)
ic.cidrAllocator, err = ipam.New(kubeClient, cloud, nodeInformer, ic.allocatorType, clusterCIDRs, ic.serviceCIDR, nodeCIDRMaskSize)
if err != nil {
return nil, err
}