mirror of https://github.com/kubernetes/kops.git
95 lines
2.7 KiB
Go
95 lines
2.7 KiB
Go
/*
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Copyright 2019 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 gcemodel
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import (
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"fmt"
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"k8s.io/kops/pkg/apis/kops"
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"k8s.io/kops/upup/pkg/fi"
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"k8s.io/kops/upup/pkg/fi/cloudup/gce"
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"k8s.io/kops/upup/pkg/fi/cloudup/gcetasks"
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)
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// NetworkModelBuilder configures network objects
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type NetworkModelBuilder struct {
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*GCEModelContext
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Lifecycle fi.Lifecycle
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}
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var _ fi.ModelBuilder = &NetworkModelBuilder{}
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func (b *NetworkModelBuilder) Build(c *fi.ModelBuilderContext) error {
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network := &gcetasks.Network{
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Name: s(b.NameForNetwork()),
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Lifecycle: b.Lifecycle,
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Mode: "auto", // Automatically create subnets, but stop using legacy mode
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}
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c.AddTask(network)
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if gce.UsesIPAliases(b.Cluster) {
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if len(b.Cluster.Spec.Subnets) != 1 {
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return fmt.Errorf("expected exactly one subnet for IPAlias mode")
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}
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subnet := b.Cluster.Spec.Subnets[0]
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// The primary CIDR is used by the nodes,
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// services and pods draw from the secondary IP ranges.
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// All the CIDRs must be valid RFC1918 IP addresses, which makes conversion from the "pure kubenet" 100.64.0.0 GCE range difficult
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t := &gcetasks.Subnet{
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Name: s(b.NameForIPAliasSubnet()),
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Network: b.LinkToNetwork(),
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Lifecycle: b.Lifecycle,
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Region: s(b.Region),
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CIDR: s(subnet.CIDR),
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SecondaryIpRanges: map[string]string{
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b.NameForIPAliasRange("pods"): b.Cluster.Spec.PodCIDR,
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b.NameForIPAliasRange("services"): b.Cluster.Spec.ServiceClusterIPRange,
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},
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}
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t.GCEName = t.Name
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c.AddTask(t)
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}
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// Create a CloudNAT for private topology.
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if b.Cluster.Spec.Topology.Masters == kops.TopologyPrivate {
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var hasPrivateSubnet bool
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for _, subnet := range b.Cluster.Spec.Subnets {
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if subnet.Type == kops.SubnetTypePrivate {
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hasPrivateSubnet = true
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break
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}
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}
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if hasPrivateSubnet {
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r := &gcetasks.Router{
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Name: s(b.SafeObjectName("nat")),
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Lifecycle: b.Lifecycle,
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Network: s(b.LinkToNetwork().URL(b.Cluster.Spec.Project)),
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Region: s(b.Region),
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NATIPAllocationOption: s(gcetasks.NATIPAllocationOptionAutoOnly),
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SourceSubnetworkIPRangesToNAT: s(gcetasks.SourceSubnetworkIPRangesAll),
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}
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c.AddTask(r)
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}
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}
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return nil
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}
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