137 lines
4.7 KiB
Go
137 lines
4.7 KiB
Go
/*
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Copyright 2014 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package options
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import (
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"fmt"
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"net"
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"strings"
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apiserveroptions "k8s.io/apiserver/pkg/server/options"
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_ "k8s.io/component-base/metrics/prometheus/workqueue"
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netutils "k8s.io/utils/net"
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controlplane "k8s.io/kubernetes/pkg/controlplane/apiserver/options"
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"k8s.io/kubernetes/pkg/kubeapiserver"
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kubeoptions "k8s.io/kubernetes/pkg/kubeapiserver/options"
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)
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// completedOptions is a private wrapper that enforces a call of Complete() before Run can be invoked.
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type completedOptions struct {
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controlplane.CompletedOptions
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CloudProvider *kubeoptions.CloudProviderOptions
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Extra
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}
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type CompletedOptions struct {
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// Embed a private pointer that cannot be instantiated outside of this package.
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*completedOptions
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}
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// Complete set default ServerRunOptions.
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// Should be called after kube-apiserver flags parsed.
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func (opts *ServerRunOptions) Complete() (CompletedOptions, error) {
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if opts == nil {
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return CompletedOptions{completedOptions: &completedOptions{}}, nil
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}
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// process opts.ServiceClusterIPRange from list to Primary and Secondary
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// we process secondary only if provided by user
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apiServerServiceIP, primaryServiceIPRange, secondaryServiceIPRange, err := getServiceIPAndRanges(opts.ServiceClusterIPRanges)
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if err != nil {
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return CompletedOptions{}, err
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}
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controlplane, err := opts.Options.Complete([]string{"kubernetes.default.svc", "kubernetes.default", "kubernetes"}, []net.IP{apiServerServiceIP})
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if err != nil {
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return CompletedOptions{}, err
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}
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completed := completedOptions{
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CompletedOptions: controlplane,
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CloudProvider: opts.CloudProvider,
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Extra: opts.Extra,
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}
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completed.PrimaryServiceClusterIPRange = primaryServiceIPRange
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completed.SecondaryServiceClusterIPRange = secondaryServiceIPRange
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completed.APIServerServiceIP = apiServerServiceIP
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if completed.Etcd != nil && completed.Etcd.EnableWatchCache {
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sizes := kubeapiserver.DefaultWatchCacheSizes()
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// Ensure that overrides parse correctly.
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userSpecified, err := apiserveroptions.ParseWatchCacheSizes(completed.Etcd.WatchCacheSizes)
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if err != nil {
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return CompletedOptions{}, err
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}
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for resource, size := range userSpecified {
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sizes[resource] = size
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}
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completed.Etcd.WatchCacheSizes, err = apiserveroptions.WriteWatchCacheSizes(sizes)
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if err != nil {
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return CompletedOptions{}, err
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}
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}
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return CompletedOptions{
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completedOptions: &completed,
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}, nil
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}
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func getServiceIPAndRanges(serviceClusterIPRanges string) (net.IP, net.IPNet, net.IPNet, error) {
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serviceClusterIPRangeList := []string{}
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if serviceClusterIPRanges != "" {
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serviceClusterIPRangeList = strings.Split(serviceClusterIPRanges, ",")
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}
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var apiServerServiceIP net.IP
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var primaryServiceIPRange net.IPNet
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var secondaryServiceIPRange net.IPNet
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var err error
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// nothing provided by user, use default range (only applies to the Primary)
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if len(serviceClusterIPRangeList) == 0 {
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var primaryServiceClusterCIDR net.IPNet
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primaryServiceIPRange, apiServerServiceIP, err = controlplane.ServiceIPRange(primaryServiceClusterCIDR)
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if err != nil {
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return net.IP{}, net.IPNet{}, net.IPNet{}, fmt.Errorf("error determining service IP ranges: %v", err)
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}
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return apiServerServiceIP, primaryServiceIPRange, net.IPNet{}, nil
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}
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_, primaryServiceClusterCIDR, err := netutils.ParseCIDRSloppy(serviceClusterIPRangeList[0])
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if err != nil {
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return net.IP{}, net.IPNet{}, net.IPNet{}, fmt.Errorf("service-cluster-ip-range[0] is not a valid cidr")
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}
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primaryServiceIPRange, apiServerServiceIP, err = controlplane.ServiceIPRange(*primaryServiceClusterCIDR)
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if err != nil {
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return net.IP{}, net.IPNet{}, net.IPNet{}, fmt.Errorf("error determining service IP ranges for primary service cidr: %v", err)
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}
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// user provided at least two entries
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// note: validation asserts that the list is max of two dual stack entries
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if len(serviceClusterIPRangeList) > 1 {
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_, secondaryServiceClusterCIDR, err := netutils.ParseCIDRSloppy(serviceClusterIPRangeList[1])
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if err != nil {
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return net.IP{}, net.IPNet{}, net.IPNet{}, fmt.Errorf("service-cluster-ip-range[1] is not an ip net")
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}
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secondaryServiceIPRange = *secondaryServiceClusterCIDR
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}
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return apiServerServiceIP, primaryServiceIPRange, secondaryServiceIPRange, nil
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}
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