forked from kubernetes/kops
/
create_cluster.go
1355 lines (1153 loc) · 44.9 KB
/
create_cluster.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 main
import (
"bytes"
"encoding/csv"
"fmt"
"io"
"io/ioutil"
"os"
"strconv"
"strings"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/service/ec2"
"github.com/golang/glog"
"github.com/spf13/cobra"
apierrors "k8s.io/apimachinery/pkg/api/errors"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/util/sets"
"k8s.io/kops"
"k8s.io/kops/cmd/kops/util"
api "k8s.io/kops/pkg/apis/kops"
"k8s.io/kops/pkg/apis/kops/model"
"k8s.io/kops/pkg/apis/kops/registry"
"k8s.io/kops/pkg/apis/kops/validation"
"k8s.io/kops/pkg/assets"
"k8s.io/kops/pkg/commands"
"k8s.io/kops/pkg/dns"
"k8s.io/kops/pkg/featureflag"
"k8s.io/kops/upup/pkg/fi"
"k8s.io/kops/upup/pkg/fi/cloudup"
"k8s.io/kops/upup/pkg/fi/cloudup/aliup"
"k8s.io/kops/upup/pkg/fi/cloudup/awsup"
"k8s.io/kops/upup/pkg/fi/cloudup/gce"
"k8s.io/kops/upup/pkg/fi/utils"
"k8s.io/kubernetes/pkg/kubectl/cmd/templates"
"k8s.io/kubernetes/pkg/kubectl/util/i18n"
)
const (
AuthorizationFlagAlwaysAllow = "AlwaysAllow"
AuthorizationFlagRBAC = "RBAC"
)
type CreateClusterOptions struct {
ClusterName string
Yes bool
Target string
Models string
Cloud string
Zones []string
MasterZones []string
NodeSize string
MasterSize string
MasterCount int32
NodeCount int32
MasterVolumeSize int32
NodeVolumeSize int32
EncryptEtcdStorage bool
Project string
KubernetesVersion string
OutDir string
Image string
VPCID string
SubnetIDs []string
UtilitySubnetIDs []string
NetworkCIDR string
DNSZone string
AdminAccess []string
SSHAccess []string
Networking string
NodeSecurityGroups []string
MasterSecurityGroups []string
AssociatePublicIP *bool
// SSHPublicKeys is a map of the SSH public keys we should configure; required on AWS, not required on GCE
SSHPublicKeys map[string][]byte
// Overrides allows settings values direct in the spec
Overrides []string
// Channel is the location of the api.Channel to use for our defaults
Channel string
// The network topology to use
Topology string
// The authorization approach to use (RBAC, AlwaysAllow)
Authorization string
// The DNS type to use (public/private)
DNSType string
// Enable/Disable Bastion Host complete setup
Bastion bool
// Specify tags for AWS instance groups
CloudLabels string
// Egress configuration - FOR TESTING ONLY
Egress string
// Specify tenancy (default or dedicated) for masters and nodes
MasterTenancy string
NodeTenancy string
// Specify API loadbalancer as public or internal
APILoadBalancerType string
// Specify the SSL certificate to use for the API loadbalancer. Currently only supported in AWS.
APISSLCertificate string
// Allow custom public master name
MasterPublicName string
// vSphere options
VSphereServer string
VSphereDatacenter string
VSphereResourcePool string
VSphereCoreDNSServer string
// Note: We need open-vm-tools to be installed for vSphere Cloud Provider to work
// We need VSphereDatastore to support Kubernetes vSphere Cloud Provider (v1.5.3)
// We can remove this once we support higher versions.
VSphereDatastore string
// ConfigBase is the location where we will store the configuration, it defaults to the state store
ConfigBase string
// DryRun mode output a cluster manifest of Output type.
DryRun bool
// Output type during a DryRun
Output string
}
func (o *CreateClusterOptions) InitDefaults() {
o.Yes = false
o.Target = cloudup.TargetDirect
o.Models = strings.Join(cloudup.CloudupModels, ",")
o.Networking = "kubenet"
o.Channel = api.DefaultChannel
o.Topology = api.TopologyPublic
o.DNSType = string(api.DNSTypePublic)
o.Bastion = false
// Default to open API & SSH access
o.AdminAccess = []string{"0.0.0.0/0"}
o.Authorization = AuthorizationFlagRBAC
}
var (
createClusterLong = templates.LongDesc(i18n.T(`
Create a kubernetes cluster using command line flags.
This command creates cloud based resources such as networks and virtual machines. Once
the infrastructure is in place Kubernetes is installed on the virtual machines.
These operations are done in parallel and rely on eventual consistency.
`))
createClusterExample = templates.Examples(i18n.T(`
# Create a cluster in AWS
kops create cluster --name=kubernetes-cluster.example.com \
--state=s3://kops-state-1234 --zones=eu-west-1a \
--node-count=2
# Create a cluster in AWS that has HA masters. This cluster
# will be setup with an internal networking in a private VPC.
# A bastion instance will be setup to provide instance access.
export NODE_SIZE=${NODE_SIZE:-m4.large}
export MASTER_SIZE=${MASTER_SIZE:-m4.large}
export ZONES=${ZONES:-"us-east-1d,us-east-1b,us-east-1c"}
export KOPS_STATE_STORE="s3://my-state-store"
kops create cluster k8s-clusters.example.com \
--node-count 3 \
--zones $ZONES \
--node-size $NODE_SIZE \
--master-size $MASTER_SIZE \
--master-zones $ZONES \
--networking weave \
--topology private \
--bastion="true" \
--yes
# Create cluster in GCE.
# This is an alpha feature.
export KOPS_STATE_STORE="gs://mybucket-kops"
export ZONES=${MASTER_ZONES:-"us-east1-b,us-east1-c,us-east1-d"}
export KOPS_FEATURE_FLAGS=AlphaAllowGCE
kops create cluster kubernetes-k8s-gce.example.com
--zones $ZONES \
--master-zones $ZONES \
--node-count 3
--project my-gce-project \
--image "ubuntu-os-cloud/ubuntu-1604-xenial-v20170202" \
--yes
# Create manifest for a cluster in AWS
kops create cluster --name=kubernetes-cluster.example.com \
--state=s3://kops-state-1234 --zones=eu-west-1a \
--node-count=2 --dry-run -oyaml
`))
createClusterShort = i18n.T("Create a Kubernetes cluster.")
)
func NewCmdCreateCluster(f *util.Factory, out io.Writer) *cobra.Command {
options := &CreateClusterOptions{}
options.InitDefaults()
sshPublicKey := ""
associatePublicIP := false
cmd := &cobra.Command{
Use: "cluster",
Short: createClusterShort,
Long: createClusterLong,
Example: createClusterExample,
Run: func(cmd *cobra.Command, args []string) {
if cmd.Flag("associate-public-ip").Changed {
options.AssociatePublicIP = &associatePublicIP
}
err := rootCommand.ProcessArgs(args)
if err != nil {
exitWithError(err)
return
}
options.ClusterName = rootCommand.clusterName
if sshPublicKey != "" {
options.SSHPublicKeys, err = loadSSHPublicKeys(sshPublicKey)
if err != nil {
exitWithError(fmt.Errorf("error reading SSH key file %q: %v", sshPublicKey, err))
}
}
err = RunCreateCluster(f, out, options)
if err != nil {
exitWithError(err)
}
},
}
cmd.Flags().BoolVarP(&options.Yes, "yes", "y", options.Yes, "Specify --yes to immediately create the cluster")
cmd.Flags().StringVar(&options.Target, "target", options.Target, fmt.Sprintf("Valid targets: %s, %s, %s. Set this flag to %s if you want kops to generate terraform", cloudup.TargetDirect, cloudup.TargetTerraform, cloudup.TargetCloudformation, cloudup.TargetTerraform))
cmd.Flags().StringVar(&options.Models, "model", options.Models, "Models to apply (separate multiple models with commas)")
// Configuration / state location
if featureflag.EnableSeparateConfigBase.Enabled() {
cmd.Flags().StringVar(&options.ConfigBase, "config-base", options.ConfigBase, "A cluster-readable location where we mirror configuration information, separate from the state store. Allows for a state store that is not accessible from the cluster.")
}
cmd.Flags().StringVar(&options.Cloud, "cloud", options.Cloud, "Cloud provider to use - gce, aws, vsphere")
cmd.Flags().StringSliceVar(&options.Zones, "zones", options.Zones, "Zones in which to run the cluster")
cmd.Flags().StringSliceVar(&options.MasterZones, "master-zones", options.MasterZones, "Zones in which to run masters (must be an odd number)")
cmd.Flags().StringVar(&options.Project, "project", options.Project, "Project to use (must be set on GCE)")
cmd.Flags().StringVar(&options.KubernetesVersion, "kubernetes-version", options.KubernetesVersion, "Version of kubernetes to run (defaults to version in channel)")
cmd.Flags().StringVar(&sshPublicKey, "ssh-public-key", sshPublicKey, "SSH public key to use (defaults to ~/.ssh/id_rsa.pub on AWS)")
cmd.Flags().StringVar(&options.NodeSize, "node-size", options.NodeSize, "Set instance size for nodes")
cmd.Flags().StringVar(&options.MasterSize, "master-size", options.MasterSize, "Set instance size for masters")
cmd.Flags().Int32Var(&options.MasterVolumeSize, "master-volume-size", options.MasterVolumeSize, "Set instance volume size (in GB) for masters")
cmd.Flags().Int32Var(&options.NodeVolumeSize, "node-volume-size", options.NodeVolumeSize, "Set instance volume size (in GB) for nodes")
cmd.Flags().StringVar(&options.VPCID, "vpc", options.VPCID, "Set to use a shared VPC")
cmd.Flags().StringSliceVar(&options.SubnetIDs, "subnets", options.SubnetIDs, "Set to use shared subnets")
cmd.Flags().StringSliceVar(&options.UtilitySubnetIDs, "utility-subnets", options.UtilitySubnetIDs, "Set to use shared utility subnets")
cmd.Flags().StringVar(&options.NetworkCIDR, "network-cidr", options.NetworkCIDR, "Set to override the default network CIDR")
cmd.Flags().Int32Var(&options.MasterCount, "master-count", options.MasterCount, "Set the number of masters. Defaults to one master per master-zone")
cmd.Flags().Int32Var(&options.NodeCount, "node-count", options.NodeCount, "Set the number of nodes")
cmd.Flags().BoolVar(&options.EncryptEtcdStorage, "encrypt-etcd-storage", options.EncryptEtcdStorage, "Generate key in aws kms and use it for encrypt etcd volumes")
cmd.Flags().StringVar(&options.Image, "image", options.Image, "Image to use for all instances.")
cmd.Flags().StringVar(&options.Networking, "networking", "kubenet", "Networking mode to use. kubenet (default), classic, external, kopeio-vxlan (or kopeio), weave, flannel-vxlan (or flannel), flannel-udp, calico, canal, kube-router, romana, amazon-vpc-routed-eni, cilium.")
cmd.Flags().StringVar(&options.DNSZone, "dns-zone", options.DNSZone, "DNS hosted zone to use (defaults to longest matching zone)")
cmd.Flags().StringVar(&options.OutDir, "out", options.OutDir, "Path to write any local output")
cmd.Flags().StringSliceVar(&options.AdminAccess, "admin-access", options.AdminAccess, "Restrict API access to this CIDR. If not set, access will not be restricted by IP.")
cmd.Flags().StringSliceVar(&options.SSHAccess, "ssh-access", options.SSHAccess, "Restrict SSH access to this CIDR. If not set, access will not be restricted by IP. (default [0.0.0.0/0])")
// TODO: Can we deprecate this flag - it is awkward?
cmd.Flags().BoolVar(&associatePublicIP, "associate-public-ip", false, "Specify --associate-public-ip=[true|false] to enable/disable association of public IP for master ASG and nodes. Default is 'true'.")
cmd.Flags().StringSliceVar(&options.NodeSecurityGroups, "node-security-groups", options.NodeSecurityGroups, "Add precreated additional security groups to nodes.")
cmd.Flags().StringSliceVar(&options.MasterSecurityGroups, "master-security-groups", options.MasterSecurityGroups, "Add precreated additional security groups to masters.")
cmd.Flags().StringVar(&options.Channel, "channel", options.Channel, "Channel for default versions and configuration to use")
// Network topology
cmd.Flags().StringVarP(&options.Topology, "topology", "t", options.Topology, "Controls network topology for the cluster. public|private. Default is 'public'.")
// Authorization
cmd.Flags().StringVar(&options.Authorization, "authorization", options.Authorization, "Authorization mode to use: "+AuthorizationFlagAlwaysAllow+" or "+AuthorizationFlagRBAC)
// DNS
cmd.Flags().StringVar(&options.DNSType, "dns", options.DNSType, "DNS hosted zone to use: public|private. Default is 'public'.")
// Bastion
cmd.Flags().BoolVar(&options.Bastion, "bastion", options.Bastion, "Pass the --bastion flag to enable a bastion instance group. Only applies to private topology.")
// Allow custom tags from the CLI
cmd.Flags().StringVar(&options.CloudLabels, "cloud-labels", options.CloudLabels, "A list of KV pairs used to tag all instance groups in AWS (eg \"Owner=John Doe,Team=Some Team\").")
// Master and Node Tenancy
cmd.Flags().StringVar(&options.MasterTenancy, "master-tenancy", options.MasterTenancy, "The tenancy of the master group on AWS. Can either be default or dedicated.")
cmd.Flags().StringVar(&options.NodeTenancy, "node-tenancy", options.NodeTenancy, "The tenancy of the node group on AWS. Can be either default or dedicated.")
cmd.Flags().StringVar(&options.APILoadBalancerType, "api-loadbalancer-type", options.APILoadBalancerType, "Sets the API loadbalancer type to either 'public' or 'internal'")
cmd.Flags().StringVar(&options.APISSLCertificate, "api-ssl-certificate", options.APISSLCertificate, "Currently only supported in AWS. Sets the ARN of the SSL Certificate to use for the API server loadbalancer.")
// Allow custom public master name
cmd.Flags().StringVar(&options.MasterPublicName, "master-public-name", options.MasterPublicName, "Sets the public master public name")
// DryRun mode that will print YAML or JSON
cmd.Flags().BoolVar(&options.DryRun, "dry-run", options.DryRun, "If true, only print the object that would be sent, without sending it. This flag can be used to create a cluster YAML or JSON manifest.")
cmd.Flags().StringVarP(&options.Output, "output", "o", options.Output, "Output format. One of json|yaml. Used with the --dry-run flag.")
if featureflag.SpecOverrideFlag.Enabled() {
cmd.Flags().StringSliceVar(&options.Overrides, "override", options.Overrides, "Directly configure values in the spec")
}
if featureflag.VSphereCloudProvider.Enabled() {
// vSphere flags
cmd.Flags().StringVar(&options.VSphereServer, "vsphere-server", options.VSphereServer, "vsphere-server is required for vSphere. Set vCenter URL Ex: 10.192.10.30 or myvcenter.io (without https://)")
cmd.Flags().StringVar(&options.VSphereDatacenter, "vsphere-datacenter", options.VSphereDatacenter, "vsphere-datacenter is required for vSphere. Set the name of the datacenter in which to deploy Kubernetes VMs.")
cmd.Flags().StringVar(&options.VSphereResourcePool, "vsphere-resource-pool", options.VSphereDatacenter, "vsphere-resource-pool is required for vSphere. Set a valid Cluster, Host or Resource Pool in which to deploy Kubernetes VMs.")
cmd.Flags().StringVar(&options.VSphereCoreDNSServer, "vsphere-coredns-server", options.VSphereCoreDNSServer, "vsphere-coredns-server is required for vSphere.")
cmd.Flags().StringVar(&options.VSphereDatastore, "vsphere-datastore", options.VSphereDatastore, "vsphere-datastore is required for vSphere. Set a valid datastore in which to store dynamic provision volumes.")
}
return cmd
}
func RunCreateCluster(f *util.Factory, out io.Writer, c *CreateClusterOptions) error {
isDryrun := false
// direct requires --yes (others do not, because they don't make changes)
targetName := c.Target
if c.Target == cloudup.TargetDirect {
if !c.Yes {
isDryrun = true
targetName = cloudup.TargetDryRun
}
}
if c.Target == cloudup.TargetDryRun {
isDryrun = true
targetName = cloudup.TargetDryRun
}
if c.DryRun && c.Output == "" {
return fmt.Errorf("unable to execute --dry-run without setting --output")
}
clusterName := c.ClusterName
if clusterName == "" {
return fmt.Errorf("--name is required")
}
// TODO: Reuse rootCommand stateStore logic?
if c.OutDir == "" {
if c.Target == cloudup.TargetTerraform {
c.OutDir = "out/terraform"
} else if c.Target == cloudup.TargetCloudformation {
c.OutDir = "out/cloudformation"
} else {
c.OutDir = "out"
}
}
clientset, err := f.Clientset()
if err != nil {
return err
}
cluster, err := clientset.GetCluster(clusterName)
if err != nil {
if apierrors.IsNotFound(err) {
cluster = nil
} else {
return err
}
}
if cluster != nil {
return fmt.Errorf("cluster %q already exists; use 'kops update cluster' to apply changes", clusterName)
}
cluster = &api.Cluster{}
cluster.ObjectMeta.Name = clusterName
channel, err := api.LoadChannel(c.Channel)
if err != nil {
return err
}
if channel.Spec.Cluster != nil {
cluster.Spec = *channel.Spec.Cluster
kubernetesVersion := api.RecommendedKubernetesVersion(channel, kops.Version)
if kubernetesVersion != nil {
cluster.Spec.KubernetesVersion = kubernetesVersion.String()
}
}
cluster.Spec.Channel = c.Channel
cluster.Spec.ConfigBase = c.ConfigBase
configBase, err := clientset.ConfigBaseFor(cluster)
if err != nil {
return fmt.Errorf("error building ConfigBase for cluster: %v", err)
}
cluster.Spec.ConfigBase = configBase.Path()
// In future we could change the default if the flag is not specified, e.g. in 1.7 maybe the default is RBAC?
cluster.Spec.Authorization = &api.AuthorizationSpec{}
if strings.EqualFold(c.Authorization, AuthorizationFlagAlwaysAllow) {
cluster.Spec.Authorization.AlwaysAllow = &api.AlwaysAllowAuthorizationSpec{}
} else if strings.EqualFold(c.Authorization, AuthorizationFlagRBAC) {
cluster.Spec.Authorization.RBAC = &api.RBACAuthorizationSpec{}
} else {
return fmt.Errorf("unknown authorization mode %q", c.Authorization)
}
if c.Cloud != "" {
cluster.Spec.CloudProvider = c.Cloud
}
allZones := sets.NewString()
allZones.Insert(c.Zones...)
allZones.Insert(c.MasterZones...)
if c.VPCID != "" {
cluster.Spec.NetworkID = c.VPCID
} else if api.CloudProviderID(cluster.Spec.CloudProvider) == api.CloudProviderAWS && len(c.SubnetIDs) > 0 {
cloudTags := map[string]string{}
awsCloud, err := awsup.NewAWSCloud(c.Zones[0][:len(c.Zones[0])-1], cloudTags)
if err != nil {
return fmt.Errorf("error loading cloud: %v", err)
}
res, err := awsCloud.EC2().DescribeSubnets(&ec2.DescribeSubnetsInput{
SubnetIds: []*string{aws.String(c.SubnetIDs[0])},
})
if err != nil {
return fmt.Errorf("error describing subnet %s: %v", c.SubnetIDs[0], err)
}
if len(res.Subnets) == 0 || res.Subnets[0].VpcId == nil {
return fmt.Errorf("failed to determine VPC id of subnet %s", c.SubnetIDs[0])
}
cluster.Spec.NetworkID = *res.Subnets[0].VpcId
}
if cluster.Spec.CloudProvider == "" {
for _, zone := range allZones.List() {
cloud, known := fi.GuessCloudForZone(zone)
if known {
glog.Infof("Inferred --cloud=%s from zone %q", cloud, zone)
cluster.Spec.CloudProvider = string(cloud)
break
}
}
if cluster.Spec.CloudProvider == "" {
if allZones.Len() == 0 {
return fmt.Errorf("must specify --zones or --cloud")
} else {
return fmt.Errorf("unable to infer CloudProvider from Zones (is there a typo in --zones?)")
}
}
}
zoneToSubnetMap := make(map[string]*api.ClusterSubnetSpec)
if len(c.Zones) == 0 {
return fmt.Errorf("must specify at least one zone for the cluster (use --zones)")
} else if api.CloudProviderID(cluster.Spec.CloudProvider) == api.CloudProviderGCE {
// On GCE, subnets are regional - we create one per region, not per zone
for _, zoneName := range allZones.List() {
region, err := gce.ZoneToRegion(zoneName)
if err != nil {
return err
}
// We create default subnets named the same as the regions
subnetName := region
subnet := model.FindSubnet(cluster, subnetName)
if subnet == nil {
subnet = &api.ClusterSubnetSpec{
Name: subnetName,
Region: region,
}
cluster.Spec.Subnets = append(cluster.Spec.Subnets, *subnet)
}
zoneToSubnetMap[zoneName] = subnet
}
} else if api.CloudProviderID(cluster.Spec.CloudProvider) == api.CloudProviderDO {
if len(c.Zones) > 1 {
return fmt.Errorf("digitalocean cloud provider currently only supports 1 region, expect multi-region support when digitalocean support is in beta")
}
// For DO we just pass in the region for --zones
region := c.Zones[0]
subnet := model.FindSubnet(cluster, region)
// for DO, subnets are just regions
subnetName := region
if subnet == nil {
subnet = &api.ClusterSubnetSpec{
Name: subnetName,
// region and zone are the same for DO
Region: region,
Zone: region,
}
cluster.Spec.Subnets = append(cluster.Spec.Subnets, *subnet)
}
zoneToSubnetMap[region] = subnet
} else if api.CloudProviderID(cluster.Spec.CloudProvider) == api.CloudProviderALI {
var zoneToSubnetSwitchID map[string]string
if len(c.Zones) > 0 && len(c.SubnetIDs) > 0 && api.CloudProviderID(cluster.Spec.CloudProvider) == api.CloudProviderALI {
zoneToSubnetSwitchID, err = aliup.ZoneToVSwitchID(cluster.Spec.NetworkID, c.Zones, c.SubnetIDs)
if err != nil {
return err
}
}
for _, zoneName := range allZones.List() {
// We create default subnets named the same as the zones
subnetName := zoneName
subnet := model.FindSubnet(cluster, subnetName)
if subnet == nil {
subnet = &api.ClusterSubnetSpec{
Name: subnetName,
Zone: subnetName,
Egress: c.Egress,
}
if vswitchID, ok := zoneToSubnetSwitchID[zoneName]; ok {
subnet.ProviderID = vswitchID
}
cluster.Spec.Subnets = append(cluster.Spec.Subnets, *subnet)
}
zoneToSubnetMap[zoneName] = subnet
}
} else {
var zoneToSubnetProviderID map[string]string
if len(c.Zones) > 0 && len(c.SubnetIDs) > 0 && api.CloudProviderID(cluster.Spec.CloudProvider) == api.CloudProviderAWS {
zoneToSubnetProviderID, err = getZoneToSubnetProviderID(cluster.Spec.NetworkID, c.Zones[0][:len(c.Zones[0])-1], c.SubnetIDs)
if err != nil {
return err
}
}
for _, zoneName := range allZones.List() {
// We create default subnets named the same as the zones
subnetName := zoneName
subnet := model.FindSubnet(cluster, subnetName)
if subnet == nil {
subnet = &api.ClusterSubnetSpec{
Name: subnetName,
Zone: subnetName,
Egress: c.Egress,
}
if subnetID, ok := zoneToSubnetProviderID[zoneName]; ok {
subnet.ProviderID = subnetID
}
cluster.Spec.Subnets = append(cluster.Spec.Subnets, *subnet)
}
zoneToSubnetMap[zoneName] = subnet
}
}
var masters []*api.InstanceGroup
var nodes []*api.InstanceGroup
var instanceGroups []*api.InstanceGroup
cloudLabels, err := parseCloudLabels(c.CloudLabels)
if err != nil {
return fmt.Errorf("error parsing global cloud labels: %v", err)
}
if len(cloudLabels) != 0 {
cluster.Spec.CloudLabels = cloudLabels
}
// Build the master subnets
// The master zones is the default set of zones unless explicitly set
// The master count is the number of master zones unless explicitly set
// We then round-robin around the zones
if len(masters) == 0 {
masterCount := c.MasterCount
masterZones := c.MasterZones
if len(masterZones) != 0 {
if c.MasterCount != 0 && c.MasterCount < int32(len(c.MasterZones)) {
return fmt.Errorf("specified %d master zones, but also requested %d masters. If specifying both, the count should match.", len(masterZones), c.MasterCount)
}
if masterCount == 0 {
// If master count is not specified, default to the number of master zones
masterCount = int32(len(c.MasterZones))
}
} else {
// masterZones not set; default to same as node Zones
masterZones = c.Zones
if masterCount == 0 {
// If master count is not specified, default to 1
masterCount = 1
}
}
if len(masterZones) == 0 {
// Should be unreachable
return fmt.Errorf("cannot determine master zones")
}
for i := 0; i < int(masterCount); i++ {
zone := masterZones[i%len(masterZones)]
name := zone
if int(masterCount) > len(masterZones) {
name += "-" + strconv.Itoa(1+(i/len(masterZones)))
}
g := &api.InstanceGroup{}
g.Spec.Role = api.InstanceGroupRoleMaster
g.Spec.MinSize = fi.Int32(1)
g.Spec.MaxSize = fi.Int32(1)
g.ObjectMeta.Name = "master-" + name
subnet := zoneToSubnetMap[zone]
if subnet == nil {
glog.Fatalf("subnet not found in zoneToSubnetMap")
}
g.Spec.Subnets = []string{subnet.Name}
if api.CloudProviderID(cluster.Spec.CloudProvider) == api.CloudProviderGCE {
g.Spec.Zones = []string{zone}
}
instanceGroups = append(instanceGroups, g)
masters = append(masters, g)
}
}
if len(cluster.Spec.EtcdClusters) == 0 {
masterAZs := sets.NewString()
duplicateAZs := false
for _, ig := range masters {
zones, err := model.FindZonesForInstanceGroup(cluster, ig)
if err != nil {
return err
}
for _, zone := range zones {
if masterAZs.Has(zone) {
duplicateAZs = true
}
masterAZs.Insert(zone)
}
}
if duplicateAZs {
glog.Warningf("Running with masters in the same AZs; redundancy will be reduced")
}
for _, etcdCluster := range cloudup.EtcdClusters {
etcd := &api.EtcdClusterSpec{}
etcd.Name = etcdCluster
var names []string
for _, ig := range masters {
name := ig.ObjectMeta.Name
// We expect the IG to have a `master-` prefix, but this is both superfluous
// and not how we named things previously
name = strings.TrimPrefix(name, "master-")
names = append(names, name)
}
names = trimCommonPrefix(names)
for i, ig := range masters {
m := &api.EtcdMemberSpec{}
if c.EncryptEtcdStorage {
m.EncryptedVolume = &c.EncryptEtcdStorage
}
m.Name = names[i]
m.InstanceGroup = fi.String(ig.ObjectMeta.Name)
etcd.Members = append(etcd.Members, m)
}
cluster.Spec.EtcdClusters = append(cluster.Spec.EtcdClusters, etcd)
}
}
if len(nodes) == 0 {
g := &api.InstanceGroup{}
g.Spec.Role = api.InstanceGroupRoleNode
g.ObjectMeta.Name = "nodes"
subnetNames := sets.NewString()
for _, zone := range c.Zones {
subnet := zoneToSubnetMap[zone]
if subnet == nil {
glog.Fatalf("subnet not found in zoneToSubnetMap")
}
subnetNames.Insert(subnet.Name)
}
g.Spec.Subnets = subnetNames.List()
if api.CloudProviderID(cluster.Spec.CloudProvider) == api.CloudProviderGCE {
g.Spec.Zones = c.Zones
}
instanceGroups = append(instanceGroups, g)
nodes = append(nodes, g)
}
if c.NodeSize != "" {
for _, group := range nodes {
group.Spec.MachineType = c.NodeSize
}
}
if c.Image != "" {
for _, group := range instanceGroups {
group.Spec.Image = c.Image
}
}
if c.AssociatePublicIP != nil {
for _, group := range instanceGroups {
group.Spec.AssociatePublicIP = c.AssociatePublicIP
}
}
if c.NodeCount != 0 {
for _, group := range nodes {
group.Spec.MinSize = fi.Int32(c.NodeCount)
group.Spec.MaxSize = fi.Int32(c.NodeCount)
}
}
if c.MasterTenancy != "" {
for _, group := range masters {
group.Spec.Tenancy = c.MasterTenancy
}
}
if c.NodeTenancy != "" {
for _, group := range nodes {
group.Spec.Tenancy = c.NodeTenancy
}
}
if len(c.NodeSecurityGroups) > 0 {
for _, group := range nodes {
group.Spec.AdditionalSecurityGroups = c.NodeSecurityGroups
}
}
if len(c.MasterSecurityGroups) > 0 {
for _, group := range masters {
group.Spec.AdditionalSecurityGroups = c.MasterSecurityGroups
}
}
if c.MasterSize != "" {
for _, group := range masters {
group.Spec.MachineType = c.MasterSize
}
}
if c.MasterVolumeSize != 0 {
for _, group := range masters {
group.Spec.RootVolumeSize = fi.Int32(c.MasterVolumeSize)
}
}
if c.NodeVolumeSize != 0 {
for _, group := range nodes {
group.Spec.RootVolumeSize = fi.Int32(c.NodeVolumeSize)
}
}
if c.DNSZone != "" {
cluster.Spec.DNSZone = c.DNSZone
}
if c.Cloud != "" {
if c.Cloud == "vsphere" {
if !featureflag.VSphereCloudProvider.Enabled() {
return fmt.Errorf("Feature flag VSphereCloudProvider is not set. Cloud vSphere will not be supported.")
}
if cluster.Spec.CloudConfig == nil {
cluster.Spec.CloudConfig = &api.CloudConfiguration{}
}
if c.VSphereServer == "" {
return fmt.Errorf("vsphere-server is required for vSphere. Set vCenter URL Ex: 10.192.10.30 or myvcenter.io (without https://)")
}
cluster.Spec.CloudConfig.VSphereServer = fi.String(c.VSphereServer)
if c.VSphereDatacenter == "" {
return fmt.Errorf("vsphere-datacenter is required for vSphere. Set the name of the datacenter in which to deploy Kubernetes VMs.")
}
cluster.Spec.CloudConfig.VSphereDatacenter = fi.String(c.VSphereDatacenter)
if c.VSphereResourcePool == "" {
return fmt.Errorf("vsphere-resource-pool is required for vSphere. Set a valid Cluster, Host or Resource Pool in which to deploy Kubernetes VMs.")
}
cluster.Spec.CloudConfig.VSphereResourcePool = fi.String(c.VSphereResourcePool)
if c.VSphereCoreDNSServer == "" {
return fmt.Errorf("A coredns server is required for vSphere.")
}
cluster.Spec.CloudConfig.VSphereCoreDNSServer = fi.String(c.VSphereCoreDNSServer)
if c.VSphereDatastore == "" {
return fmt.Errorf("vsphere-datastore is required for vSphere. Set a valid datastore in which to store dynamic provision volumes.")
}
cluster.Spec.CloudConfig.VSphereDatastore = fi.String(c.VSphereDatastore)
}
}
// Populate project
if c.Project != "" {
cluster.Spec.Project = c.Project
}
if api.CloudProviderID(cluster.Spec.CloudProvider) == api.CloudProviderGCE {
if cluster.Spec.Project == "" {
project, err := gce.DefaultProject()
if err != nil {
glog.Warningf("unable to get default google cloud project: %v", err)
} else if project == "" {
glog.Warningf("default google cloud project not set (try `gcloud config set project <name>`")
} else {
glog.Infof("using google cloud project: %s", project)
}
cluster.Spec.Project = project
}
}
if c.KubernetesVersion != "" {
cluster.Spec.KubernetesVersion = c.KubernetesVersion
}
cluster.Spec.Networking = &api.NetworkingSpec{}
switch c.Networking {
case "classic":
cluster.Spec.Networking.Classic = &api.ClassicNetworkingSpec{}
case "kubenet":
cluster.Spec.Networking.Kubenet = &api.KubenetNetworkingSpec{}
case "external":
cluster.Spec.Networking.External = &api.ExternalNetworkingSpec{}
case "cni":
cluster.Spec.Networking.CNI = &api.CNINetworkingSpec{}
case "kopeio-vxlan", "kopeio":
cluster.Spec.Networking.Kopeio = &api.KopeioNetworkingSpec{}
case "weave":
cluster.Spec.Networking.Weave = &api.WeaveNetworkingSpec{}
if cluster.Spec.CloudProvider == "aws" {
// AWS supports "jumbo frames" of 9001 bytes and weave adds up to 87 bytes overhead
// sets the default to the largest number that leaves enough overhead and is divisible by 4
jumboFrameMTUSize := int32(8912)
cluster.Spec.Networking.Weave.MTU = &jumboFrameMTUSize
}
case "flannel", "flannel-vxlan":
cluster.Spec.Networking.Flannel = &api.FlannelNetworkingSpec{
Backend: "vxlan",
}
case "flannel-udp":
glog.Warningf("flannel UDP mode is not recommended; consider flannel-vxlan instead")
cluster.Spec.Networking.Flannel = &api.FlannelNetworkingSpec{
Backend: "udp",
}
case "calico":
cluster.Spec.Networking.Calico = &api.CalicoNetworkingSpec{}
case "canal":
cluster.Spec.Networking.Canal = &api.CanalNetworkingSpec{}
case "kube-router":
cluster.Spec.Networking.Kuberouter = &api.KuberouterNetworkingSpec{}
case "romana":
cluster.Spec.Networking.Romana = &api.RomanaNetworkingSpec{}
case "amazonvpc", "amazon-vpc-routed-eni":
cluster.Spec.Networking.AmazonVPC = &api.AmazonVPCNetworkingSpec{}
case "cilium":
cluster.Spec.Networking.Cilium = &api.CiliumNetworkingSpec{}
default:
return fmt.Errorf("unknown networking mode %q", c.Networking)
}
glog.V(4).Infof("networking mode=%s => %s", c.Networking, fi.DebugAsJsonString(cluster.Spec.Networking))
if c.NetworkCIDR != "" {
cluster.Spec.NetworkCIDR = c.NetworkCIDR
}
// Network Topology
if c.Topology == "" {
// The flag default should have set this, but we might be being called as a library
glog.Infof("Empty topology. Defaulting to public topology")
c.Topology = api.TopologyPublic
}
switch c.Topology {
case api.TopologyPublic:
cluster.Spec.Topology = &api.TopologySpec{
Masters: api.TopologyPublic,
Nodes: api.TopologyPublic,
//Bastion: &api.BastionSpec{Enable: c.Bastion},
}
if c.Bastion {
return fmt.Errorf("Bastion supports --topology='private' only.")
}
for i := range cluster.Spec.Subnets {
cluster.Spec.Subnets[i].Type = api.SubnetTypePublic
}
case api.TopologyPrivate:
if !supportsPrivateTopology(cluster.Spec.Networking) {
return fmt.Errorf("Invalid networking option %s. Currently only '--networking kopeio-vxlan (or kopeio)', '--networking weave', '--networking flannel', '--networking calico', '--networking canal', '--networking kube-router', '--networking romana', '--networking amazon-vpc-routed-eni' are supported for private topologies", c.Networking)
}
cluster.Spec.Topology = &api.TopologySpec{
Masters: api.TopologyPrivate,
Nodes: api.TopologyPrivate,
}
for i := range cluster.Spec.Subnets {
cluster.Spec.Subnets[i].Type = api.SubnetTypePrivate
}
var utilitySubnets []api.ClusterSubnetSpec
var zoneToSubnetProviderID map[string]string
if len(c.Zones) > 0 && len(c.UtilitySubnetIDs) > 0 && api.CloudProviderID(cluster.Spec.CloudProvider) == api.CloudProviderAWS {
zoneToSubnetProviderID, err = getZoneToSubnetProviderID(cluster.Spec.NetworkID, c.Zones[0][:len(c.Zones[0])-1], c.UtilitySubnetIDs)
if err != nil {
return err
}
}
for _, s := range cluster.Spec.Subnets {
if s.Type == api.SubnetTypeUtility {
continue
}
subnet := api.ClusterSubnetSpec{
Name: "utility-" + s.Name,
Zone: s.Zone,
Type: api.SubnetTypeUtility,
}
if subnetID, ok := zoneToSubnetProviderID[s.Zone]; ok {
subnet.ProviderID = subnetID
}
utilitySubnets = append(utilitySubnets, subnet)
}
cluster.Spec.Subnets = append(cluster.Spec.Subnets, utilitySubnets...)
if c.Bastion {
bastionGroup := &api.InstanceGroup{}
bastionGroup.Spec.Role = api.InstanceGroupRoleBastion
bastionGroup.ObjectMeta.Name = "bastions"
bastionGroup.Spec.Image = c.Image
instanceGroups = append(instanceGroups, bastionGroup)
cluster.Spec.Topology.Bastion = &api.BastionSpec{
BastionPublicName: "bastion." + clusterName,
}
}
default:
return fmt.Errorf("Invalid topology %s.", c.Topology)
}
// DNS
if c.DNSType == "" {
// The flag default should have set this, but we might be being called as a library