mirror of https://github.com/kubernetes/kops.git
287 lines
7.6 KiB
Go
287 lines
7.6 KiB
Go
/*
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Copyright 2016 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 awsmodel
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import (
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"fmt"
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"strings"
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"github.com/golang/glog"
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"k8s.io/kops/pkg/apis/kops"
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"k8s.io/kops/pkg/model"
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"k8s.io/kops/pkg/model/defaults"
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"k8s.io/kops/upup/pkg/fi"
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"k8s.io/kops/upup/pkg/fi/cloudup/awstasks"
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)
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const (
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DefaultVolumeType = "gp2"
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DefaultVolumeIops = 100
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)
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// AutoscalingGroupModelBuilder configures AutoscalingGroup objects
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type AutoscalingGroupModelBuilder struct {
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*AWSModelContext
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BootstrapScript *model.BootstrapScript
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Lifecycle *fi.Lifecycle
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SecurityLifecycle *fi.Lifecycle
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}
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var _ fi.ModelBuilder = &AutoscalingGroupModelBuilder{}
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func (b *AutoscalingGroupModelBuilder) Build(c *fi.ModelBuilderContext) error {
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var err error
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for _, ig := range b.InstanceGroups {
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name := b.AutoscalingGroupName(ig)
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// LaunchConfiguration
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var launchConfiguration *awstasks.LaunchConfiguration
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{
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volumeSize := fi.Int32Value(ig.Spec.RootVolumeSize)
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if volumeSize == 0 {
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volumeSize, err = defaults.DefaultInstanceGroupVolumeSize(ig.Spec.Role)
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if err != nil {
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return err
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}
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}
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volumeType := fi.StringValue(ig.Spec.RootVolumeType)
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if volumeType == "" {
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volumeType = DefaultVolumeType
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}
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volumeIops := fi.Int32Value(ig.Spec.RootVolumeIops)
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if volumeIops <= 0 {
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volumeIops = DefaultVolumeIops
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}
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link, err := b.LinkToIAMInstanceProfile(ig)
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if err != nil {
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return fmt.Errorf("unable to find IAM profile link for instance group %q: %v", ig.ObjectMeta.Name, err)
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}
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var sgLink *awstasks.SecurityGroup
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if ig.Spec.SecurityGroupOverride != nil {
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glog.V(1).Infof("WARNING: You are overwriting the Instance Groups, Security Group. When this is done you are responsible for ensure the correct rules!")
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sgName := fmt.Sprintf("%v-%v", fi.StringValue(ig.Spec.SecurityGroupOverride), ig.Spec.Role)
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sgLink = &awstasks.SecurityGroup{
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Name: &sgName,
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ID: ig.Spec.SecurityGroupOverride,
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Shared: fi.Bool(true),
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}
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} else {
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sgLink = b.LinkToSecurityGroup(ig.Spec.Role)
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}
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t := &awstasks.LaunchConfiguration{
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Name: s(name),
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Lifecycle: b.Lifecycle,
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SecurityGroups: []*awstasks.SecurityGroup{
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sgLink,
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},
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IAMInstanceProfile: link,
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ImageID: s(ig.Spec.Image),
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InstanceType: s(strings.Split(ig.Spec.MachineType, ",")[0]),
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InstanceMonitoring: ig.Spec.DetailedInstanceMonitoring,
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RootVolumeSize: i64(int64(volumeSize)),
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RootVolumeType: s(volumeType),
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RootVolumeOptimization: ig.Spec.RootVolumeOptimization,
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}
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if volumeType == "io1" {
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t.RootVolumeIops = i64(int64(volumeIops))
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}
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if ig.Spec.Tenancy != "" {
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t.Tenancy = s(ig.Spec.Tenancy)
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}
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for _, id := range ig.Spec.AdditionalSecurityGroups {
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sgTask := &awstasks.SecurityGroup{
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Name: fi.String(id),
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ID: fi.String(id),
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Shared: fi.Bool(true),
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Lifecycle: b.SecurityLifecycle,
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}
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if err := c.EnsureTask(sgTask); err != nil {
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return err
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}
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t.SecurityGroups = append(t.SecurityGroups, sgTask)
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}
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if t.SSHKey, err = b.LinkToSSHKey(); err != nil {
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return err
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}
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if t.UserData, err = b.BootstrapScript.ResourceNodeUp(ig, b.Cluster); err != nil {
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return err
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}
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if fi.StringValue(ig.Spec.MaxPrice) != "" {
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spotPrice := fi.StringValue(ig.Spec.MaxPrice)
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t.SpotPrice = spotPrice
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}
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{
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// TODO: Wrapper / helper class to analyze clusters
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subnetMap := make(map[string]*kops.ClusterSubnetSpec)
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for i := range b.Cluster.Spec.Subnets {
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subnet := &b.Cluster.Spec.Subnets[i]
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subnetMap[subnet.Name] = subnet
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}
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var subnetType kops.SubnetType
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for _, subnetName := range ig.Spec.Subnets {
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subnet := subnetMap[subnetName]
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if subnet == nil {
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return fmt.Errorf("InstanceGroup %q uses subnet %q that does not exist", ig.ObjectMeta.Name, subnetName)
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}
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if subnetType != "" && subnetType != subnet.Type {
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return fmt.Errorf("InstanceGroup %q cannot be in subnets of different Type", ig.ObjectMeta.Name)
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}
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subnetType = subnet.Type
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}
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associatePublicIP := true
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switch subnetType {
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case kops.SubnetTypePublic, kops.SubnetTypeUtility:
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associatePublicIP = true
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if ig.Spec.AssociatePublicIP != nil {
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associatePublicIP = *ig.Spec.AssociatePublicIP
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}
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case kops.SubnetTypePrivate:
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associatePublicIP = false
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if ig.Spec.AssociatePublicIP != nil {
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// This isn't meaningful - private subnets can't have public ip
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//associatePublicIP = *ig.Spec.AssociatePublicIP
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if *ig.Spec.AssociatePublicIP {
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glog.Warningf("Ignoring AssociatePublicIP=true for private InstanceGroup %q", ig.ObjectMeta.Name)
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}
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}
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default:
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return fmt.Errorf("unknown subnet type %q", subnetType)
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}
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t.AssociatePublicIP = &associatePublicIP
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}
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c.AddTask(t)
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launchConfiguration = t
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}
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// AutoscalingGroup
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{
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t := &awstasks.AutoscalingGroup{
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Name: s(name),
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Lifecycle: b.Lifecycle,
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Granularity: s("1Minute"),
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Metrics: []string{
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"GroupMinSize",
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"GroupMaxSize",
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"GroupDesiredCapacity",
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"GroupInServiceInstances",
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"GroupPendingInstances",
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"GroupStandbyInstances",
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"GroupTerminatingInstances",
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"GroupTotalInstances",
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},
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LaunchConfiguration: launchConfiguration,
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}
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minSize := int32(1)
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maxSize := int32(1)
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if ig.Spec.MinSize != nil {
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minSize = fi.Int32Value(ig.Spec.MinSize)
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} else if ig.Spec.Role == kops.InstanceGroupRoleNode {
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minSize = 2
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}
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if ig.Spec.MaxSize != nil {
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maxSize = *ig.Spec.MaxSize
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} else if ig.Spec.Role == kops.InstanceGroupRoleNode {
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maxSize = 2
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}
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t.MinSize = i64(int64(minSize))
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t.MaxSize = i64(int64(maxSize))
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subnets, err := b.GatherSubnets(ig)
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if err != nil {
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return err
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}
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if len(subnets) == 0 {
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return fmt.Errorf("could not determine any subnets for InstanceGroup %q; subnets was %s", ig.ObjectMeta.Name, ig.Spec.Subnets)
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}
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for _, subnet := range subnets {
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t.Subnets = append(t.Subnets, b.LinkToSubnet(subnet))
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}
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tags, err := b.CloudTagsForInstanceGroup(ig)
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if err != nil {
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return fmt.Errorf("error building cloud tags: %v", err)
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}
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t.Tags = tags
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processes := []string{}
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for _, p := range ig.Spec.SuspendProcesses {
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processes = append(processes, p)
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}
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t.SuspendProcesses = &processes
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c.AddTask(t)
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}
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// External Load Balancer/TargetGroup Attachments
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{
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for _, lb := range ig.Spec.ExternalLoadBalancers {
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if lb.LoadBalancerName != nil {
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t := &awstasks.ExternalLoadBalancerAttachment{
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Name: s("extlb-" + *lb.LoadBalancerName + "-" + ig.Name),
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Lifecycle: b.Lifecycle,
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LoadBalancerName: *lb.LoadBalancerName,
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AutoscalingGroup: b.LinkToAutoscalingGroup(ig),
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}
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c.AddTask(t)
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}
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if lb.TargetGroupARN != nil {
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t := &awstasks.ExternalTargetGroupAttachment{
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Name: s("exttg-" + *lb.TargetGroupARN + "-" + ig.Name),
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Lifecycle: b.Lifecycle,
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TargetGroupARN: *lb.TargetGroupARN,
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AutoscalingGroup: b.LinkToAutoscalingGroup(ig),
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}
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c.AddTask(t)
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}
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}
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}
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}
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return nil
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}
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