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defaults.go
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defaults.go
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// Copyright (c) Microsoft Corporation. All rights reserved.
// Licensed under the MIT license.
package api
import (
"bytes"
"crypto/rand"
"encoding/base64"
"encoding/binary"
"fmt"
"net"
"sort"
"strconv"
"strings"
"github.com/Azure/go-autorest/autorest/to"
"github.com/Azure/aks-engine/pkg/api/common"
"github.com/Azure/aks-engine/pkg/helpers"
"github.com/blang/semver"
"github.com/pkg/errors"
log "github.com/sirupsen/logrus"
)
// DistroValues is a list of currently supported distros
var DistroValues = []Distro{"", Ubuntu, Ubuntu1804, RHEL, CoreOS, AKSUbuntu1604, AKSUbuntu1804, Ubuntu1804Gen2, ACC1604, AKSUbuntuGPU1804, AKSUbuntuGPU1804Gen2}
// PropertiesDefaultsParams is the parameters when we set the properties defaults for ContainerService.
type PropertiesDefaultsParams struct {
IsUpgrade bool
IsScale bool
PkiKeySize int
}
func (p *Properties) setLoadBalancerSkuDefaults() {
if p.OrchestratorProfile == nil {
p.OrchestratorProfile = &OrchestratorProfile{}
}
if p.OrchestratorProfile.KubernetesConfig == nil {
p.OrchestratorProfile.KubernetesConfig = &KubernetesConfig{}
}
if p.OrchestratorProfile.KubernetesConfig.LoadBalancerSku == "" {
if p.HasAvailabilityZones() {
p.OrchestratorProfile.KubernetesConfig.LoadBalancerSku = StandardLoadBalancerSku
} else {
p.OrchestratorProfile.KubernetesConfig.LoadBalancerSku = DefaultLoadBalancerSku
}
}
// normalize sku
if strings.EqualFold(p.OrchestratorProfile.KubernetesConfig.LoadBalancerSku, BasicLoadBalancerSku) {
p.OrchestratorProfile.KubernetesConfig.LoadBalancerSku = BasicLoadBalancerSku
} else if strings.EqualFold(p.OrchestratorProfile.KubernetesConfig.LoadBalancerSku, StandardLoadBalancerSku) {
p.OrchestratorProfile.KubernetesConfig.LoadBalancerSku = StandardLoadBalancerSku
}
}
// SetPropertiesDefaults for the container Properties, returns true if certs are generated
func (cs *ContainerService) SetPropertiesDefaults(params PropertiesDefaultsParams) (bool, error) {
properties := cs.Properties
// Set custom cloud profile defaults if this cluster configuration has custom cloud profile
if cs.Properties.CustomCloudProfile != nil {
err := cs.setCustomCloudProfileDefaults(CustomCloudProfileDefaultsParams{
IsUpgrade: params.IsUpgrade,
IsScale: params.IsScale,
})
if err != nil {
return false, err
}
}
// Set master profile defaults if this cluster configuration includes master node(s)
if cs.Properties.MasterProfile != nil {
properties.setMasterProfileDefaults(params.IsUpgrade)
}
// move load balancer sku defaults logic from setOrchestratorDefaults() to here to serve LB checking at setAgentProfileDefaults()
properties.setLoadBalancerSkuDefaults()
properties.setAgentProfileDefaults(params.IsUpgrade, params.IsScale)
properties.setStorageDefaults()
cs.setOrchestratorDefaults(params.IsUpgrade, params.IsScale)
properties.setExtensionDefaults()
// Set hosted master profile defaults if this cluster configuration has a hosted control plane
if cs.Properties.HostedMasterProfile != nil {
properties.setHostedMasterProfileDefaults()
}
if cs.Properties.WindowsProfile != nil {
properties.setWindowsProfileDefaults(params.IsUpgrade, params.IsScale)
}
properties.setTelemetryProfileDefaults()
certsGenerated, _, e := cs.SetDefaultCerts(DefaultCertParams{
PkiKeySize: params.PkiKeySize,
})
if e != nil {
return false, e
}
return certsGenerated, nil
}
// setOrchestratorDefaults for orchestrators
func (cs *ContainerService) setOrchestratorDefaults(isUpgrade, isScale bool) {
isUpdate := isUpgrade || isScale
a := cs.Properties
cloudSpecConfig := cs.GetCloudSpecConfig()
if a.OrchestratorProfile == nil {
return
}
o := a.OrchestratorProfile
if o.OrchestratorVersion == "" {
o.OrchestratorVersion = common.GetValidPatchVersion(
o.OrchestratorType,
o.OrchestratorVersion, isUpdate, a.HasWindows())
}
switch o.OrchestratorType {
case Kubernetes:
if o.KubernetesConfig == nil {
o.KubernetesConfig = &KubernetesConfig{}
}
// For backwards compatibility with original, overloaded "NetworkPolicy" config vector
// we translate deprecated NetworkPolicy usage to the NetworkConfig equivalent
// and set a default network policy enforcement configuration
switch o.KubernetesConfig.NetworkPolicy {
case NetworkPolicyAzure:
if o.KubernetesConfig.NetworkPlugin == "" {
o.KubernetesConfig.NetworkPlugin = NetworkPluginAzure
o.KubernetesConfig.NetworkPolicy = DefaultNetworkPolicy
}
case NetworkPolicyNone:
o.KubernetesConfig.NetworkPlugin = NetworkPluginKubenet
o.KubernetesConfig.NetworkPolicy = DefaultNetworkPolicy
case NetworkPolicyCalico:
if o.KubernetesConfig.NetworkPlugin == "" {
// If not specified, then set the network plugin to be kubenet
// for backwards compatibility. Otherwise, use what is specified.
o.KubernetesConfig.NetworkPlugin = NetworkPluginKubenet
}
case NetworkPolicyCilium:
o.KubernetesConfig.NetworkPlugin = NetworkPluginCilium
case NetworkPolicyAntrea:
o.KubernetesConfig.NetworkPlugin = NetworkPluginAntrea
}
if o.KubernetesConfig.KubernetesImageBase == "" {
o.KubernetesConfig.KubernetesImageBase = cloudSpecConfig.KubernetesSpecConfig.KubernetesImageBase
}
if o.KubernetesConfig.MCRKubernetesImageBase == "" {
o.KubernetesConfig.MCRKubernetesImageBase = cloudSpecConfig.KubernetesSpecConfig.MCRKubernetesImageBase
}
if o.KubernetesConfig.EtcdVersion == "" {
o.KubernetesConfig.EtcdVersion = DefaultEtcdVersion
} else if isUpgrade {
if o.KubernetesConfig.EtcdVersion != DefaultEtcdVersion {
// Override (i.e., upgrade) the etcd version if the default is newer in an upgrade scenario
if common.GetMinVersion([]string{o.KubernetesConfig.EtcdVersion, DefaultEtcdVersion}, true) == o.KubernetesConfig.EtcdVersion {
log.Warnf("etcd will be upgraded to version %s\n", DefaultEtcdVersion)
o.KubernetesConfig.EtcdVersion = DefaultEtcdVersion
}
}
}
if a.HasWindows() {
if o.KubernetesConfig.NetworkPlugin == "" {
o.KubernetesConfig.NetworkPlugin = DefaultNetworkPluginWindows
}
} else {
if o.KubernetesConfig.NetworkPlugin == "" {
if o.KubernetesConfig.IsAddonEnabled(common.FlannelAddonName) {
o.KubernetesConfig.NetworkPlugin = NetworkPluginFlannel
} else {
o.KubernetesConfig.NetworkPlugin = DefaultNetworkPlugin
}
}
}
if o.KubernetesConfig.ContainerRuntime == "" {
o.KubernetesConfig.ContainerRuntime = DefaultContainerRuntime
}
switch o.KubernetesConfig.ContainerRuntime {
case Docker:
if o.KubernetesConfig.MobyVersion == "" || isUpdate {
if o.KubernetesConfig.MobyVersion != DefaultMobyVersion {
if isUpgrade {
log.Warnf("Moby will be upgraded to version %s\n", DefaultMobyVersion)
} else if isScale {
log.Warnf("Any new nodes will have Moby version %s\n", DefaultMobyVersion)
}
}
o.KubernetesConfig.MobyVersion = DefaultMobyVersion
}
case Containerd, KataContainers:
if o.KubernetesConfig.ContainerdVersion == "" || isUpdate {
if o.KubernetesConfig.ContainerdVersion != DefaultContainerdVersion {
if isUpgrade {
log.Warnf("containerd will be upgraded to version %s\n", DefaultContainerdVersion)
} else if isScale {
log.Warnf("Any new nodes will have containerd version %s\n", DefaultContainerdVersion)
}
}
o.KubernetesConfig.ContainerdVersion = DefaultContainerdVersion
}
}
if o.KubernetesConfig.ClusterSubnet == "" {
if o.IsAzureCNI() {
// When Azure CNI is enabled, all masters, agents and pods share the same large subnet.
// Except when master is VMSS, then masters and agents have separate subnets within the same large subnet.
o.KubernetesConfig.ClusterSubnet = DefaultKubernetesSubnet
} else {
o.KubernetesConfig.ClusterSubnet = DefaultKubernetesClusterSubnet
// ipv6 only cluster
if cs.Properties.FeatureFlags.IsFeatureEnabled("EnableIPv6Only") {
o.KubernetesConfig.ClusterSubnet = DefaultKubernetesClusterSubnetIPv6
}
// ipv4 and ipv6 subnet for dual stack
if cs.Properties.FeatureFlags.IsFeatureEnabled("EnableIPv6DualStack") {
o.KubernetesConfig.ClusterSubnet = strings.Join([]string{DefaultKubernetesClusterSubnet, cs.getDefaultKubernetesClusterSubnetIPv6()}, ",")
}
}
} else {
// ensure 2 subnets exists if ipv6 dual stack feature is enabled
if cs.Properties.FeatureFlags.IsFeatureEnabled("EnableIPv6DualStack") && !o.IsAzureCNI() {
clusterSubnets := strings.Split(o.KubernetesConfig.ClusterSubnet, ",")
if len(clusterSubnets) == 1 {
// if error exists, then it'll be caught by validate
ip, _, err := net.ParseCIDR(clusterSubnets[0])
if err == nil {
if ip.To4() != nil {
// the first cidr block is ipv4, so append ipv6
clusterSubnets = append(clusterSubnets, cs.getDefaultKubernetesClusterSubnetIPv6())
} else {
// first cidr has to be ipv4
clusterSubnets = append([]string{DefaultKubernetesClusterSubnet}, clusterSubnets...)
}
// only set the cluster subnet if no error has been encountered
o.KubernetesConfig.ClusterSubnet = strings.Join(clusterSubnets, ",")
}
}
}
}
if o.KubernetesConfig.GCHighThreshold == 0 {
o.KubernetesConfig.GCHighThreshold = DefaultKubernetesGCHighThreshold
}
if o.KubernetesConfig.GCLowThreshold == 0 {
o.KubernetesConfig.GCLowThreshold = DefaultKubernetesGCLowThreshold
}
if o.KubernetesConfig.DNSServiceIP == "" {
o.KubernetesConfig.DNSServiceIP = DefaultKubernetesDNSServiceIP
if cs.Properties.FeatureFlags.IsFeatureEnabled("EnableIPv6Only") {
o.KubernetesConfig.DNSServiceIP = DefaultKubernetesDNSServiceIPv6
}
}
if o.KubernetesConfig.DockerBridgeSubnet == "" {
o.KubernetesConfig.DockerBridgeSubnet = DefaultDockerBridgeSubnet
}
if o.KubernetesConfig.ServiceCIDR == "" {
o.KubernetesConfig.ServiceCIDR = DefaultKubernetesServiceCIDR
if cs.Properties.FeatureFlags.IsFeatureEnabled("EnableIPv6Only") {
o.KubernetesConfig.ServiceCIDR = DefaultKubernetesServiceCIDRIPv6
}
}
if common.IsKubernetesVersionGe(o.OrchestratorVersion, "1.14.0") {
o.KubernetesConfig.CloudProviderBackoffMode = CloudProviderBackoffModeV2
if o.KubernetesConfig.CloudProviderBackoff == nil {
o.KubernetesConfig.CloudProviderBackoff = to.BoolPtr(true)
}
} else {
o.KubernetesConfig.CloudProviderBackoffMode = "v1"
if o.KubernetesConfig.CloudProviderBackoff == nil {
o.KubernetesConfig.CloudProviderBackoff = to.BoolPtr(false)
}
}
// Enforce sane cloudprovider backoff defaults.
o.KubernetesConfig.SetCloudProviderBackoffDefaults()
if o.KubernetesConfig.CloudProviderRateLimit == nil {
o.KubernetesConfig.CloudProviderRateLimit = to.BoolPtr(DefaultKubernetesCloudProviderRateLimit)
}
// Enforce sane cloudprovider rate limit defaults.
a.SetCloudProviderRateLimitDefaults()
if o.KubernetesConfig.PrivateCluster == nil {
o.KubernetesConfig.PrivateCluster = &PrivateCluster{}
}
if o.KubernetesConfig.PrivateCluster.Enabled == nil {
o.KubernetesConfig.PrivateCluster.Enabled = to.BoolPtr(DefaultPrivateClusterEnabled)
}
if "" == a.OrchestratorProfile.KubernetesConfig.EtcdDiskSizeGB {
switch {
case a.TotalNodes() > 20:
if a.IsAzureStackCloud() {
// Currently on Azure Stack max size of managed disk size is 1023GB.
a.OrchestratorProfile.KubernetesConfig.EtcdDiskSizeGB = MaxAzureStackManagedDiskSize
} else {
a.OrchestratorProfile.KubernetesConfig.EtcdDiskSizeGB = DefaultEtcdDiskSizeGT20Nodes
}
case a.TotalNodes() > 10:
if a.IsAzureStackCloud() {
// Currently on Azure Stack max size of managed disk size is 1023GB.
a.OrchestratorProfile.KubernetesConfig.EtcdDiskSizeGB = MaxAzureStackManagedDiskSize
} else {
a.OrchestratorProfile.KubernetesConfig.EtcdDiskSizeGB = DefaultEtcdDiskSizeGT10Nodes
}
case a.TotalNodes() > 3:
a.OrchestratorProfile.KubernetesConfig.EtcdDiskSizeGB = DefaultEtcdDiskSizeGT3Nodes
default:
a.OrchestratorProfile.KubernetesConfig.EtcdDiskSizeGB = DefaultEtcdDiskSize
}
}
if to.Bool(o.KubernetesConfig.EnableDataEncryptionAtRest) {
if "" == a.OrchestratorProfile.KubernetesConfig.EtcdEncryptionKey {
a.OrchestratorProfile.KubernetesConfig.EtcdEncryptionKey = generateEtcdEncryptionKey()
}
}
if a.OrchestratorProfile.KubernetesConfig.PrivateJumpboxProvision() && a.OrchestratorProfile.KubernetesConfig.PrivateCluster.JumpboxProfile.OSDiskSizeGB == 0 {
a.OrchestratorProfile.KubernetesConfig.PrivateCluster.JumpboxProfile.OSDiskSizeGB = DefaultJumpboxDiskSize
}
if a.OrchestratorProfile.KubernetesConfig.PrivateJumpboxProvision() && a.OrchestratorProfile.KubernetesConfig.PrivateCluster.JumpboxProfile.Username == "" {
a.OrchestratorProfile.KubernetesConfig.PrivateCluster.JumpboxProfile.Username = DefaultJumpboxUsername
}
if a.OrchestratorProfile.KubernetesConfig.PrivateJumpboxProvision() && a.OrchestratorProfile.KubernetesConfig.PrivateCluster.JumpboxProfile.StorageProfile == "" {
a.OrchestratorProfile.KubernetesConfig.PrivateCluster.JumpboxProfile.StorageProfile = ManagedDisks
}
if a.OrchestratorProfile.KubernetesConfig.EnableRbac == nil {
a.OrchestratorProfile.KubernetesConfig.EnableRbac = to.BoolPtr(DefaultRBACEnabled)
}
// Upgrade scenario:
// We need to force set EnableRbac to true for upgrades to 1.15.0 and greater if it was previously set to false (AKS Engine only)
if !a.OrchestratorProfile.KubernetesConfig.IsRBACEnabled() && common.IsKubernetesVersionGe(o.OrchestratorVersion, "1.15.0") && isUpgrade && !cs.Properties.IsHostedMasterProfile() {
log.Warnf("RBAC will be enabled during upgrade to version %s\n", o.OrchestratorVersion)
a.OrchestratorProfile.KubernetesConfig.EnableRbac = to.BoolPtr(true)
}
if a.OrchestratorProfile.KubernetesConfig.IsRBACEnabled() {
a.OrchestratorProfile.KubernetesConfig.EnableAggregatedAPIs = true
} else if isUpdate && a.OrchestratorProfile.KubernetesConfig.EnableAggregatedAPIs {
// Upgrade scenario:
// We need to force set EnableAggregatedAPIs to false if RBAC was previously disabled
a.OrchestratorProfile.KubernetesConfig.EnableAggregatedAPIs = false
}
if a.OrchestratorProfile.KubernetesConfig.EnableSecureKubelet == nil {
a.OrchestratorProfile.KubernetesConfig.EnableSecureKubelet = to.BoolPtr(DefaultSecureKubeletEnabled)
}
if a.OrchestratorProfile.KubernetesConfig.UseInstanceMetadata == nil {
if a.IsAzureStackCloud() {
a.OrchestratorProfile.KubernetesConfig.UseInstanceMetadata = to.BoolPtr(DefaultAzureStackUseInstanceMetadata)
} else {
a.OrchestratorProfile.KubernetesConfig.UseInstanceMetadata = to.BoolPtr(DefaultUseInstanceMetadata)
}
}
if a.OrchestratorProfile.KubernetesConfig.LoadBalancerSku == StandardLoadBalancerSku && a.OrchestratorProfile.KubernetesConfig.ExcludeMasterFromStandardLB == nil {
a.OrchestratorProfile.KubernetesConfig.ExcludeMasterFromStandardLB = to.BoolPtr(DefaultExcludeMasterFromStandardLB)
}
if a.OrchestratorProfile.IsAzureCNI() {
if a.HasWindows() {
a.OrchestratorProfile.KubernetesConfig.AzureCNIVersion = AzureCniPluginVerWindows
} else {
a.OrchestratorProfile.KubernetesConfig.AzureCNIVersion = AzureCniPluginVerLinux
}
}
if a.OrchestratorProfile.KubernetesConfig.MaximumLoadBalancerRuleCount == 0 {
a.OrchestratorProfile.KubernetesConfig.MaximumLoadBalancerRuleCount = DefaultMaximumLoadBalancerRuleCount
}
if a.OrchestratorProfile.KubernetesConfig.ProxyMode == "" {
a.OrchestratorProfile.KubernetesConfig.ProxyMode = DefaultKubeProxyMode
}
if a.OrchestratorProfile.KubernetesConfig.LoadBalancerSku == StandardLoadBalancerSku &&
a.OrchestratorProfile.KubernetesConfig.OutboundRuleIdleTimeoutInMinutes == 0 {
a.OrchestratorProfile.KubernetesConfig.OutboundRuleIdleTimeoutInMinutes = DefaultOutboundRuleIdleTimeoutInMinutes
}
if o.KubernetesConfig.LoadBalancerSku == StandardLoadBalancerSku {
if o.KubernetesConfig.CloudProviderDisableOutboundSNAT == nil {
o.KubernetesConfig.CloudProviderDisableOutboundSNAT = to.BoolPtr(false)
}
} else {
// CloudProviderDisableOutboundSNAT is only valid in the context of Standard LB, statically set to false if not Standard LB
o.KubernetesConfig.CloudProviderDisableOutboundSNAT = to.BoolPtr(false)
}
if o.KubernetesConfig.ContainerRuntimeConfig == nil {
o.KubernetesConfig.ContainerRuntimeConfig = make(map[string]string)
}
// Master-specific defaults that depend upon OrchestratorProfile defaults
if cs.Properties.OrchestratorProfile.KubernetesConfig.LoadBalancerSku == StandardLoadBalancerSku {
cs.Properties.OrchestratorProfile.KubernetesConfig.ExcludeMasterFromStandardLB = to.BoolPtr(DefaultExcludeMasterFromStandardLB)
}
if cs.Properties.MasterProfile != nil {
if !cs.Properties.MasterProfile.IsCustomVNET() {
if cs.Properties.OrchestratorProfile.IsAzureCNI() {
// When VNET integration is enabled, all masters, agents and pods share the same large subnet.
cs.Properties.MasterProfile.Subnet = cs.Properties.OrchestratorProfile.KubernetesConfig.ClusterSubnet
// FirstConsecutiveStaticIP is not reset if it is upgrade and some value already exists
if !isUpgrade || len(cs.Properties.MasterProfile.FirstConsecutiveStaticIP) == 0 {
if cs.Properties.MasterProfile.IsVirtualMachineScaleSets() {
cs.Properties.MasterProfile.FirstConsecutiveStaticIP = DefaultFirstConsecutiveKubernetesStaticIPVMSS
cs.Properties.MasterProfile.Subnet = DefaultKubernetesMasterSubnet
cs.Properties.MasterProfile.AgentSubnet = DefaultKubernetesAgentSubnetVMSS
} else {
cs.Properties.MasterProfile.FirstConsecutiveStaticIP = cs.Properties.MasterProfile.GetFirstConsecutiveStaticIPAddress(cs.Properties.MasterProfile.Subnet)
}
}
} else {
cs.Properties.MasterProfile.Subnet = DefaultKubernetesMasterSubnet
cs.Properties.MasterProfile.SubnetIPv6 = DefaultKubernetesMasterSubnetIPv6
// FirstConsecutiveStaticIP is not reset if it is upgrade and some value already exists
if !isUpgrade || len(cs.Properties.MasterProfile.FirstConsecutiveStaticIP) == 0 {
if cs.Properties.MasterProfile.IsVirtualMachineScaleSets() {
cs.Properties.MasterProfile.FirstConsecutiveStaticIP = DefaultFirstConsecutiveKubernetesStaticIPVMSS
cs.Properties.MasterProfile.AgentSubnet = DefaultKubernetesAgentSubnetVMSS
} else {
cs.Properties.MasterProfile.FirstConsecutiveStaticIP = DefaultFirstConsecutiveKubernetesStaticIP
}
}
}
}
// Distro assignment for masterProfile
if cs.Properties.MasterProfile.Distro == "" && cs.Properties.MasterProfile.ImageRef == nil {
if cs.Properties.OrchestratorProfile.IsKubernetes() && cs.Properties.OrchestratorProfile.KubernetesConfig.CustomHyperkubeImage == "" {
cs.Properties.MasterProfile.Distro = AKSUbuntu1604
} else {
cs.Properties.MasterProfile.Distro = Ubuntu
}
} else if cs.Properties.OrchestratorProfile.IsKubernetes() && (isUpgrade || isScale) {
if cs.Properties.MasterProfile.Distro == AKSDockerEngine || cs.Properties.MasterProfile.Distro == AKS1604Deprecated {
cs.Properties.MasterProfile.Distro = AKSUbuntu1604
} else if cs.Properties.MasterProfile.Distro == AKS1804Deprecated {
cs.Properties.MasterProfile.Distro = AKSUbuntu1804
}
}
// The AKS Distro is not available in Azure German Cloud.
if cloudSpecConfig.CloudName == AzureGermanCloud {
cs.Properties.MasterProfile.Distro = Ubuntu
}
}
// Pool-specific defaults that depend upon OrchestratorProfile defaults
for _, profile := range cs.Properties.AgentPoolProfiles {
if cs.Properties.OrchestratorProfile.KubernetesConfig.LoadBalancerSku == StandardLoadBalancerSku {
cs.Properties.OrchestratorProfile.KubernetesConfig.ExcludeMasterFromStandardLB = to.BoolPtr(DefaultExcludeMasterFromStandardLB)
}
// configure the subnets if not in custom VNET
if cs.Properties.MasterProfile != nil && !cs.Properties.MasterProfile.IsCustomVNET() {
subnetCounter := 0
for _, profile := range cs.Properties.AgentPoolProfiles {
if !cs.Properties.MasterProfile.IsVirtualMachineScaleSets() {
profile.Subnet = cs.Properties.MasterProfile.Subnet
}
if cs.Properties.OrchestratorProfile.OrchestratorType == Kubernetes {
if !cs.Properties.MasterProfile.IsVirtualMachineScaleSets() {
profile.Subnet = cs.Properties.MasterProfile.Subnet
}
} else {
profile.Subnet = fmt.Sprintf(DefaultAgentSubnetTemplate, subnetCounter)
}
subnetCounter++
}
}
// Distro assignment for pools
if profile.OSType != Windows {
if profile.Distro == "" && profile.ImageRef == nil {
if cs.Properties.OrchestratorProfile.IsKubernetes() && cs.Properties.OrchestratorProfile.KubernetesConfig != nil && cs.Properties.OrchestratorProfile.KubernetesConfig.CustomHyperkubeImage == "" {
if profile.OSDiskSizeGB != 0 && profile.OSDiskSizeGB < VHDDiskSizeAKS {
profile.Distro = Ubuntu
} else {
profile.Distro = AKSUbuntu1604
}
} else {
profile.Distro = Ubuntu
}
// Ensure deprecated distros are overridden
// Previous versions of aks-engine required the docker-engine distro for N series vms,
// so we need to hard override it in order to produce a working cluster in upgrade/scale contexts.
} else if cs.Properties.OrchestratorProfile.IsKubernetes() && (isUpgrade || isScale) {
if profile.Distro == AKSDockerEngine || profile.Distro == AKS1604Deprecated {
profile.Distro = AKSUbuntu1604
} else if profile.Distro == AKS1804Deprecated {
profile.Distro = AKSUbuntu1804
}
}
// The AKS Distro is not available in Azure German Cloud.
if cloudSpecConfig.CloudName == AzureGermanCloud {
profile.Distro = Ubuntu
}
}
}
// Configure kubelet
cs.setKubeletConfig(isUpgrade)
// Configure addons
cs.setAddonsConfig(isUpgrade)
// Master-specific defaults that depend upon kubelet defaults
// Set the default number of IP addresses allocated for masters.
if cs.Properties.MasterProfile != nil {
if cs.Properties.MasterProfile.IPAddressCount == 0 {
// Allocate one IP address for the node.
cs.Properties.MasterProfile.IPAddressCount = 1
// Allocate IP addresses for pods if VNET integration is enabled.
if cs.Properties.OrchestratorProfile.IsAzureCNI() {
masterMaxPods, _ := strconv.Atoi(cs.Properties.MasterProfile.KubernetesConfig.KubeletConfig["--max-pods"])
cs.Properties.MasterProfile.IPAddressCount += masterMaxPods
}
}
}
// Pool-specific defaults that depend upon kubelet defaults
for _, profile := range cs.Properties.AgentPoolProfiles {
// Set the default number of IP addresses allocated for agents.
if profile.IPAddressCount == 0 {
// Allocate one IP address for the node.
profile.IPAddressCount = 1
// Allocate IP addresses for pods if VNET integration is enabled.
if cs.Properties.OrchestratorProfile.IsAzureCNI() {
agentPoolMaxPods, _ := strconv.Atoi(profile.KubernetesConfig.KubeletConfig["--max-pods"])
profile.IPAddressCount += agentPoolMaxPods
}
}
}
// Configure controller-manager
cs.setControllerManagerConfig()
// Configure cloud-controller-manager
cs.setCloudControllerManagerConfig()
// Configure apiserver
cs.setAPIServerConfig()
// Configure scheduler
cs.setSchedulerConfig()
case DCOS:
if o.DcosConfig == nil {
o.DcosConfig = &DcosConfig{}
}
dcosSemVer, _ := semver.Make(o.OrchestratorVersion)
dcosBootstrapSemVer, _ := semver.Make(common.DCOSVersion1Dot11Dot0)
if !dcosSemVer.LT(dcosBootstrapSemVer) {
if o.DcosConfig.BootstrapProfile == nil {
o.DcosConfig.BootstrapProfile = &BootstrapProfile{}
}
if len(o.DcosConfig.BootstrapProfile.VMSize) == 0 {
o.DcosConfig.BootstrapProfile.VMSize = "Standard_D2s_v3"
}
}
if !cs.Properties.MasterProfile.IsCustomVNET() {
if cs.Properties.OrchestratorProfile.DcosConfig != nil && cs.Properties.OrchestratorProfile.DcosConfig.BootstrapProfile != nil {
if !isUpgrade || len(cs.Properties.OrchestratorProfile.DcosConfig.BootstrapProfile.StaticIP) == 0 {
cs.Properties.OrchestratorProfile.DcosConfig.BootstrapProfile.StaticIP = DefaultDCOSBootstrapStaticIP
}
}
}
}
}
func (p *Properties) setExtensionDefaults() {
if p.ExtensionProfiles == nil {
return
}
for _, extension := range p.ExtensionProfiles {
if extension.RootURL == "" {
extension.RootURL = DefaultExtensionsRootURL
}
}
}
func (p *Properties) setMasterProfileDefaults(isUpgrade bool) {
// set default to VMAS for now
if p.MasterProfile.AvailabilityProfile == "" {
p.MasterProfile.AvailabilityProfile = AvailabilitySet
}
if p.MasterProfile.IsVirtualMachineScaleSets() {
if p.MasterProfile.SinglePlacementGroup == nil {
p.MasterProfile.SinglePlacementGroup = to.BoolPtr(DefaultSinglePlacementGroup)
}
}
if p.MasterProfile.IsCustomVNET() && p.MasterProfile.IsVirtualMachineScaleSets() {
if p.OrchestratorProfile.OrchestratorType == Kubernetes {
p.MasterProfile.FirstConsecutiveStaticIP = p.MasterProfile.GetFirstConsecutiveStaticIPAddress(p.MasterProfile.VnetCidr)
}
}
if !p.OrchestratorProfile.IsKubernetes() {
p.MasterProfile.Distro = Ubuntu
if !p.MasterProfile.IsCustomVNET() {
if p.OrchestratorProfile.OrchestratorType == DCOS {
p.MasterProfile.Subnet = DefaultDCOSMasterSubnet
// FirstConsecutiveStaticIP is not reset if it is upgrade and some value already exists
if !isUpgrade || len(p.MasterProfile.FirstConsecutiveStaticIP) == 0 {
p.MasterProfile.FirstConsecutiveStaticIP = DefaultDCOSFirstConsecutiveStaticIP
}
} else if p.HasWindows() {
p.MasterProfile.Subnet = DefaultSwarmWindowsMasterSubnet
// FirstConsecutiveStaticIP is not reset if it is upgrade and some value already exists
if !isUpgrade || len(p.MasterProfile.FirstConsecutiveStaticIP) == 0 {
p.MasterProfile.FirstConsecutiveStaticIP = DefaultSwarmWindowsFirstConsecutiveStaticIP
}
} else {
p.MasterProfile.Subnet = DefaultMasterSubnet
// FirstConsecutiveStaticIP is not reset if it is upgrade and some value already exists
if !isUpgrade || len(p.MasterProfile.FirstConsecutiveStaticIP) == 0 {
p.MasterProfile.FirstConsecutiveStaticIP = DefaultFirstConsecutiveStaticIP
}
}
}
}
if p.MasterProfile.HTTPSourceAddressPrefix == "" {
p.MasterProfile.HTTPSourceAddressPrefix = "*"
}
if nil == p.MasterProfile.CosmosEtcd {
p.MasterProfile.CosmosEtcd = to.BoolPtr(DefaultUseCosmos)
}
// Update default fault domain value for Azure Stack
if p.IsAzureStackCloud() && p.MasterProfile.PlatformFaultDomainCount == nil {
p.MasterProfile.PlatformFaultDomainCount = to.IntPtr(DefaultAzureStackFaultDomainCount)
}
if p.MasterProfile.PlatformUpdateDomainCount == nil {
p.MasterProfile.PlatformUpdateDomainCount = to.IntPtr(3)
}
}
func (p *Properties) setAgentProfileDefaults(isUpgrade, isScale bool) {
for _, profile := range p.AgentPoolProfiles {
if profile.AvailabilityProfile == "" {
profile.AvailabilityProfile = VirtualMachineScaleSets
}
if profile.AvailabilityProfile == VirtualMachineScaleSets {
if profile.ScaleSetEvictionPolicy == "" && (profile.ScaleSetPriority == ScaleSetPriorityLow || profile.ScaleSetPriority == ScaleSetPrioritySpot) {
profile.ScaleSetEvictionPolicy = ScaleSetEvictionPolicyDelete
}
if profile.ScaleSetPriority == ScaleSetPrioritySpot && profile.SpotMaxPrice == nil {
var maximumValueFlag float64 = -1
profile.SpotMaxPrice = &maximumValueFlag
}
if profile.VMSSOverProvisioningEnabled == nil {
profile.VMSSOverProvisioningEnabled = to.BoolPtr(DefaultVMSSOverProvisioningEnabled && !isUpgrade && !isScale)
}
if profile.SinglePlacementGroup == nil {
if strings.EqualFold(p.OrchestratorProfile.KubernetesConfig.LoadBalancerSku, StandardLoadBalancerSku) {
profile.SinglePlacementGroup = to.BoolPtr(false)
} else {
profile.SinglePlacementGroup = to.BoolPtr(DefaultSinglePlacementGroup)
}
}
}
// set default OSType to Linux
if profile.OSType == "" {
profile.OSType = Linux
}
// Update default fault domain value for Azure Stack
if p.IsAzureStackCloud() && profile.PlatformFaultDomainCount == nil {
profile.PlatformFaultDomainCount = to.IntPtr(DefaultAzureStackFaultDomainCount)
}
if profile.PlatformUpdateDomainCount == nil {
profile.PlatformUpdateDomainCount = to.IntPtr(3)
}
// Accelerated Networking is supported on most general purpose and compute-optimized instance sizes with 2 or more vCPUs.
// These supported series are: D/DSv2 and F/Fs // All the others are not supported
// On instances that support hyperthreading, Accelerated Networking is supported on VM instances with 4 or more vCPUs.
// Supported series are: D/DSv3, E/ESv3, Fsv2, and Ms/Mms.
if profile.AcceleratedNetworkingEnabled == nil {
if p.IsAzureStackCloud() {
profile.AcceleratedNetworkingEnabled = to.BoolPtr(DefaultAzureStackAcceleratedNetworking)
} else {
profile.AcceleratedNetworkingEnabled = to.BoolPtr(DefaultAcceleratedNetworking && !isUpgrade && !isScale && helpers.AcceleratedNetworkingSupported(profile.VMSize))
}
}
if profile.AcceleratedNetworkingEnabledWindows == nil {
if p.IsAzureStackCloud() {
// Here we are using same default variable. We will change once we will start supporting AcceleratedNetworking feature in general.
profile.AcceleratedNetworkingEnabledWindows = to.BoolPtr(DefaultAzureStackAcceleratedNetworking)
} else {
profile.AcceleratedNetworkingEnabledWindows = to.BoolPtr(DefaultAcceleratedNetworkingWindowsEnabled && !isUpgrade && !isScale && helpers.AcceleratedNetworkingSupported(profile.VMSize))
}
}
if profile.AuditDEnabled == nil {
profile.AuditDEnabled = to.BoolPtr(DefaultAuditDEnabled && !isUpgrade && !isScale)
}
if profile.PreserveNodesProperties == nil {
profile.PreserveNodesProperties = to.BoolPtr(DefaultPreserveNodesProperties)
}
if profile.EnableVMSSNodePublicIP == nil {
profile.EnableVMSSNodePublicIP = to.BoolPtr(DefaultEnableVMSSNodePublicIP)
}
if !p.OrchestratorProfile.IsKubernetes() {
profile.Distro = Ubuntu
}
}
}
// setWindowsProfileDefaults sets default WindowsProfile values
func (p *Properties) setWindowsProfileDefaults(isUpgrade, isScale bool) {
windowsProfile := p.WindowsProfile
if !isUpgrade && !isScale {
if windowsProfile.SSHEnabled == nil {
windowsProfile.SSHEnabled = to.BoolPtr(DefaultWindowsSSHEnabled)
}
// This allows caller to use the latest ImageVersion and WindowsSku for adding a new Windows pool to an existing cluster.
// We must assure that same WindowsPublisher and WindowsOffer are used in an existing cluster.
if windowsProfile.WindowsPublisher == AKSWindowsServer2019OSImageConfig.ImagePublisher && windowsProfile.WindowsOffer == AKSWindowsServer2019OSImageConfig.ImageOffer {
if windowsProfile.WindowsSku == "" {
windowsProfile.WindowsSku = AKSWindowsServer2019OSImageConfig.ImageSku
}
if windowsProfile.ImageVersion == "" {
if windowsProfile.WindowsSku == AKSWindowsServer2019OSImageConfig.ImageSku {
windowsProfile.ImageVersion = AKSWindowsServer2019OSImageConfig.ImageVersion
} else {
windowsProfile.ImageVersion = "latest"
}
}
} else if windowsProfile.WindowsPublisher == WindowsServer2019OSImageConfig.ImagePublisher && windowsProfile.WindowsOffer == WindowsServer2019OSImageConfig.ImageOffer {
if windowsProfile.WindowsSku == "" {
windowsProfile.WindowsSku = WindowsServer2019OSImageConfig.ImageSku
}
if windowsProfile.ImageVersion == "" {
if windowsProfile.WindowsSku == WindowsServer2019OSImageConfig.ImageSku {
windowsProfile.ImageVersion = WindowsServer2019OSImageConfig.ImageVersion
} else {
windowsProfile.ImageVersion = "latest"
}
}
} else {
if windowsProfile.WindowsPublisher == "" {
windowsProfile.WindowsPublisher = AKSWindowsServer2019OSImageConfig.ImagePublisher
}
if windowsProfile.WindowsOffer == "" {
windowsProfile.WindowsOffer = AKSWindowsServer2019OSImageConfig.ImageOffer
}
if windowsProfile.WindowsSku == "" {
windowsProfile.WindowsSku = AKSWindowsServer2019OSImageConfig.ImageSku
}
if windowsProfile.ImageVersion == "" {
// default versions are specific to a publisher/offer/sku
if windowsProfile.WindowsPublisher == AKSWindowsServer2019OSImageConfig.ImagePublisher && windowsProfile.WindowsOffer == AKSWindowsServer2019OSImageConfig.ImageOffer && windowsProfile.WindowsSku == AKSWindowsServer2019OSImageConfig.ImageSku {
windowsProfile.ImageVersion = AKSWindowsServer2019OSImageConfig.ImageVersion
} else {
windowsProfile.ImageVersion = "latest"
}
}
}
} else if isUpgrade {
// Image reference publisher and offer only can be set when you create the scale set so we keep the old values.
// Reference: https://docs.microsoft.com/en-us/azure/virtual-machine-scale-sets/virtual-machine-scale-sets-upgrade-scale-set#create-time-properties
if windowsProfile.WindowsPublisher == AKSWindowsServer2019OSImageConfig.ImagePublisher && windowsProfile.WindowsOffer == AKSWindowsServer2019OSImageConfig.ImageOffer {
if windowsProfile.ImageVersion == "" {
windowsProfile.ImageVersion = AKSWindowsServer2019OSImageConfig.ImageVersion
}
if windowsProfile.WindowsSku == "" {
windowsProfile.WindowsSku = AKSWindowsServer2019OSImageConfig.ImageSku
}
} else if windowsProfile.WindowsPublisher == WindowsServer2019OSImageConfig.ImagePublisher && windowsProfile.WindowsOffer == WindowsServer2019OSImageConfig.ImageOffer {
if windowsProfile.ImageVersion == "" {
windowsProfile.ImageVersion = WindowsServer2019OSImageConfig.ImageVersion
}
if windowsProfile.WindowsSku == "" {
windowsProfile.WindowsSku = WindowsServer2019OSImageConfig.ImageSku
}
}
}
// Scale: Keep the same version to match other nodes because we have no way to rollback
}
// setStorageDefaults for agents
func (p *Properties) setStorageDefaults() {
if p.MasterProfile != nil && len(p.MasterProfile.StorageProfile) == 0 {
if p.OrchestratorProfile.OrchestratorType == Kubernetes {
p.MasterProfile.StorageProfile = ManagedDisks
} else {
p.MasterProfile.StorageProfile = StorageAccount
}
}
for _, profile := range p.AgentPoolProfiles {
if len(profile.StorageProfile) == 0 {
if p.OrchestratorProfile.OrchestratorType == Kubernetes {
profile.StorageProfile = ManagedDisks
} else {
profile.StorageProfile = StorageAccount
}
}
}
}
func (p *Properties) setHostedMasterProfileDefaults() {
p.HostedMasterProfile.Subnet = DefaultKubernetesMasterSubnet
}
func (p *Properties) setTelemetryProfileDefaults() {
if p.TelemetryProfile == nil {
p.TelemetryProfile = &TelemetryProfile{}
}
if len(p.TelemetryProfile.ApplicationInsightsKey) == 0 {
p.TelemetryProfile.ApplicationInsightsKey = DefaultApplicationInsightsKey
}
}
// DefaultCertParams is the params when we set the default certs.
type DefaultCertParams struct {
PkiKeySize int
}
// SetDefaultCerts generates and sets defaults for the container certificateProfile, returns true if certs are generated
func (cs *ContainerService) SetDefaultCerts(params DefaultCertParams) (bool, []net.IP, error) {
p := cs.Properties
if p.MasterProfile == nil || p.OrchestratorProfile.OrchestratorType != Kubernetes {
return false, nil, nil
}
provided := certsAlreadyPresent(p.CertificateProfile, p.MasterProfile.Count)
if areAllTrue(provided) {
return false, nil, nil
}
var azureProdFQDNs []string
for _, location := range cs.GetLocations() {
azureProdFQDNs = append(azureProdFQDNs, FormatProdFQDNByLocation(p.MasterProfile.DNSPrefix, location, p.GetCustomCloudName()))
}
masterExtraFQDNs := append(azureProdFQDNs, p.MasterProfile.SubjectAltNames...)
masterExtraFQDNs = append(masterExtraFQDNs, "localhost")
firstMasterIP := net.ParseIP(p.MasterProfile.FirstConsecutiveStaticIP).To4()
localhostIP := net.ParseIP("127.0.0.1").To4()
if firstMasterIP == nil {
return false, nil, errors.Errorf("MasterProfile.FirstConsecutiveStaticIP '%s' is an invalid IP address", p.MasterProfile.FirstConsecutiveStaticIP)
}
ips := []net.IP{firstMasterIP, localhostIP}
// Include the Internal load balancer as well
if p.MasterProfile.IsVirtualMachineScaleSets() {
ips = append(ips, net.IP{firstMasterIP[0], firstMasterIP[1], byte(255), byte(DefaultInternalLbStaticIPOffset)})
} else {
// Add the Internal Loadbalancer IP which is always at p known offset from the firstMasterIP
ips = append(ips, net.IP{firstMasterIP[0], firstMasterIP[1], firstMasterIP[2], firstMasterIP[3] + byte(DefaultInternalLbStaticIPOffset)})
}
var offsetMultiplier int
if p.MasterProfile.IsVirtualMachineScaleSets() {
offsetMultiplier = p.MasterProfile.IPAddressCount
} else {
offsetMultiplier = 1
}
addr := binary.BigEndian.Uint32(firstMasterIP)
for i := 1; i < p.MasterProfile.Count; i++ {
newAddr := getNewAddr(addr, i, offsetMultiplier)
ip := make(net.IP, 4)
binary.BigEndian.PutUint32(ip, newAddr)
ips = append(ips, ip)
}
if p.CertificateProfile == nil {
p.CertificateProfile = &CertificateProfile{}
}
// use the specified Certificate Authority pair, or generate p new pair
var caPair *helpers.PkiKeyCertPair
if provided["ca"] {
caPair = &helpers.PkiKeyCertPair{CertificatePem: p.CertificateProfile.CaCertificate, PrivateKeyPem: p.CertificateProfile.CaPrivateKey}
} else {
var err error
pkiKeyCertPairParams := helpers.PkiKeyCertPairParams{
CommonName: "ca",
PkiKeySize: params.PkiKeySize,
}
caPair, err = helpers.CreatePkiKeyCertPair(pkiKeyCertPairParams)
if err != nil {
return false, ips, err
}
p.CertificateProfile.CaCertificate = caPair.CertificatePem
p.CertificateProfile.CaPrivateKey = caPair.PrivateKeyPem
}
serviceCIDR := p.OrchestratorProfile.KubernetesConfig.ServiceCIDR
// all validation for dual stack done with primary service cidr as that is considered
// the default ip family for cluster.
if cs.Properties.FeatureFlags.IsFeatureEnabled("EnableIPv6DualStack") {
// split service cidrs
serviceCIDRs := strings.Split(serviceCIDR, ",")
serviceCIDR = serviceCIDRs[0]
}
cidrFirstIP, err := common.CidrStringFirstIP(serviceCIDR)
if err != nil {
return false, ips, err
}
ips = append(ips, cidrFirstIP)
pkiParams := helpers.PkiParams{}
pkiParams.CaPair = caPair
pkiParams.ClusterDomain = DefaultKubernetesClusterDomain
pkiParams.ExtraFQDNs = masterExtraFQDNs
pkiParams.ExtraIPs = ips
pkiParams.MasterCount = p.MasterProfile.Count
pkiParams.PkiKeySize = params.PkiKeySize
apiServerPair, clientPair, kubeConfigPair, etcdServerPair, etcdClientPair, etcdPeerPairs, err :=
helpers.CreatePki(pkiParams)
if err != nil {
return false, ips, err
}
// If no Certificate Authority pair or no cert/key pair was provided, use generated cert/key pairs signed by provided Certificate Authority pair
if !provided["apiserver"] || !provided["ca"] {
p.CertificateProfile.APIServerCertificate = apiServerPair.CertificatePem
p.CertificateProfile.APIServerPrivateKey = apiServerPair.PrivateKeyPem
}
if !provided["client"] || !provided["ca"] {
p.CertificateProfile.ClientCertificate = clientPair.CertificatePem
p.CertificateProfile.ClientPrivateKey = clientPair.PrivateKeyPem
}
if !provided["kubeconfig"] || !provided["ca"] {
p.CertificateProfile.KubeConfigCertificate = kubeConfigPair.CertificatePem
p.CertificateProfile.KubeConfigPrivateKey = kubeConfigPair.PrivateKeyPem
}
if !provided["etcd"] || !provided["ca"] {
p.CertificateProfile.EtcdServerCertificate = etcdServerPair.CertificatePem
p.CertificateProfile.EtcdServerPrivateKey = etcdServerPair.PrivateKeyPem
p.CertificateProfile.EtcdClientCertificate = etcdClientPair.CertificatePem
p.CertificateProfile.EtcdClientPrivateKey = etcdClientPair.PrivateKeyPem
p.CertificateProfile.EtcdPeerCertificates = make([]string, p.MasterProfile.Count)
p.CertificateProfile.EtcdPeerPrivateKeys = make([]string, p.MasterProfile.Count)
for i, v := range etcdPeerPairs {
p.CertificateProfile.EtcdPeerCertificates[i] = v.CertificatePem
p.CertificateProfile.EtcdPeerPrivateKeys[i] = v.PrivateKeyPem
}
}
return true, ips, nil
}
func areAllTrue(m map[string]bool) bool {
for _, v := range m {
if !v {
return false
}
}
return true
}
// getNewIP returns a new IP derived from an address plus a multiple of an offset
func getNewAddr(addr uint32, count int, offsetMultiplier int) uint32 {
offset := count * offsetMultiplier
newAddr := addr + uint32(offset)
return newAddr
}
// certsAlreadyPresent already present returns a map where each key is a type of cert and each value is true if that cert/key pair is user-provided
func certsAlreadyPresent(c *CertificateProfile, m int) map[string]bool {
g := map[string]bool{
"ca": false,
"apiserver": false,
"kubeconfig": false,
"client": false,