forked from rancher/rke
/
defaults.go
190 lines (164 loc) · 7.44 KB
/
defaults.go
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package cluster
import (
"context"
ref "github.com/docker/distribution/reference"
"github.com/rancher/rke/log"
"github.com/rancher/rke/services"
)
const (
DefaultClusterConfig = "cluster.yml"
DefaultServiceClusterIPRange = "10.233.0.0/18"
DefaultClusterCIDR = "10.233.64.0/18"
DefaultClusterDNSService = "10.233.0.3"
DefaultClusterDomain = "cluster.local"
DefaultClusterSSHKeyPath = "~/.ssh/id_rsa"
DefaultDockerSockPath = "/var/run/docker.sock"
DefaultAuthStrategy = "x509"
DefaultAuthorizationMode = "rbac"
DefaultNetworkPlugin = "flannel"
DefaultNetworkCloudProvider = "none"
DefaultInfraContainerImage = "rancher/pause-amd64:3.0"
DefaultAplineImage = "alpine:latest"
DefaultNginxProxyImage = "rancher/rke-nginx-proxy:v0.1.1"
DefaultCertDownloaderImage = "rancher/rke-cert-deployer:v0.1.1"
DefaultKubernetesServicesSidecarImage = "rancher/rke-service-sidekick:v0.1.0"
DefaultIngressController = "nginx"
DefaultEtcdImage = "rancher/etcd:v3.0.17"
DefaultK8sImage = "rancher/k8s:v1.8.7-rancher1-1"
DefaultFlannelImage = "rancher/coreos-flannel:v0.9.1"
DefaultFlannelCNIImage = "rancher/coreos-flannel-cni:v0.2.0"
DefaultCalicoNodeImage = "rancher/calico-node:v2.6.2"
DefaultCalicoCNIImage = "rancher/calico-cni:v1.11.0"
DefaultCalicoControllersImage = "rancher/calico-kube-controllers:v1.0.0"
DefaultCalicoctlImage = "rancher/calico-ctl:v1.6.2"
DefaultWeaveImage = "weaveworks/weave-kube:2.1.2"
DefaultWeaveCNIImage = "weaveworks/weave-npc:2.1.2"
DefaultCanalNodeImage = "rancher/calico-node:v2.6.2"
DefaultCanalCNIImage = "rancher/calico-cni:v1.11.0"
DefaultCanalFlannelImage = "rancher/coreos-flannel:v0.9.1"
DefaultKubeDNSImage = "rancher/k8s-dns-kube-dns-amd64:1.14.5"
DefaultDNSmasqImage = "rancher/k8s-dns-dnsmasq-nanny-amd64:1.14.5"
DefaultKubeDNSSidecarImage = "rancher/k8s-dns-sidecar-amd64:1.14.5"
DefaultKubeDNSAutoScalerImage = "rancher/cluster-proportional-autoscaler-amd64:1.0.0"
)
func setDefaultIfEmptyMapValue(configMap map[string]string, key string, value string) {
if _, ok := configMap[key]; !ok {
configMap[key] = value
}
}
func setDefaultIfEmpty(varName *string, defaultValue string) {
if len(*varName) == 0 {
*varName = defaultValue
}
}
func (c *Cluster) setClusterDefaults(ctx context.Context) {
if len(c.SSHKeyPath) == 0 {
c.SSHKeyPath = DefaultClusterSSHKeyPath
}
for i, host := range c.Nodes {
if len(host.InternalAddress) == 0 {
c.Nodes[i].InternalAddress = c.Nodes[i].Address
}
if len(host.HostnameOverride) == 0 {
// This is a temporary modification
c.Nodes[i].HostnameOverride = c.Nodes[i].Address
}
if len(host.SSHKeyPath) == 0 {
c.Nodes[i].SSHKeyPath = c.SSHKeyPath
}
}
if len(c.Authorization.Mode) == 0 {
c.Authorization.Mode = DefaultAuthorizationMode
}
if c.Services.KubeAPI.PodSecurityPolicy && c.Authorization.Mode != services.RBACAuthorizationMode {
log.Warnf(ctx, "PodSecurityPolicy can't be enabled with RBAC support disabled")
c.Services.KubeAPI.PodSecurityPolicy = false
}
if len(c.Ingress.Provider) == 0 {
c.Ingress.Provider = DefaultIngressController
}
c.setClusterImageDefaults()
c.setClusterKubernetesImageVersion(ctx)
c.setClusterServicesDefaults()
c.setClusterNetworkDefaults()
}
func (c *Cluster) setClusterKubernetesImageVersion(ctx context.Context) {
k8sImageNamed, _ := ref.ParseNormalizedNamed(c.SystemImages.Kubernetes)
// Kubernetes image is already set by c.setClusterImageDefaults(),
// I will override it here if Version is set.
var VersionedImageNamed ref.NamedTagged
if c.Version != "" {
VersionedImageNamed, _ = ref.WithTag(ref.TrimNamed(k8sImageNamed), c.Version)
c.SystemImages.Kubernetes = VersionedImageNamed.String()
}
normalizedSystemImage, _ := ref.ParseNormalizedNamed(c.SystemImages.Kubernetes)
if normalizedSystemImage.String() != k8sImageNamed.String() {
log.Infof(ctx, "Overrding Kubernetes image [%s] with tag [%s]", VersionedImageNamed.Name(), VersionedImageNamed.Tag())
}
}
func (c *Cluster) setClusterServicesDefaults() {
serviceConfigDefaultsMap := map[*string]string{
&c.Services.KubeAPI.ServiceClusterIPRange: DefaultServiceClusterIPRange,
&c.Services.KubeController.ServiceClusterIPRange: DefaultServiceClusterIPRange,
&c.Services.KubeController.ClusterCIDR: DefaultClusterCIDR,
&c.Services.Kubelet.ClusterDNSServer: DefaultClusterDNSService,
&c.Services.Kubelet.ClusterDomain: DefaultClusterDomain,
&c.Services.Kubelet.InfraContainerImage: c.SystemImages.PodInfraContainer,
&c.Authentication.Strategy: DefaultAuthStrategy,
&c.Services.KubeAPI.Image: c.SystemImages.Kubernetes,
&c.Services.Scheduler.Image: c.SystemImages.Kubernetes,
&c.Services.KubeController.Image: c.SystemImages.Kubernetes,
&c.Services.Kubelet.Image: c.SystemImages.Kubernetes,
&c.Services.Kubeproxy.Image: c.SystemImages.Kubernetes,
&c.Services.Etcd.Image: c.SystemImages.Etcd,
}
for k, v := range serviceConfigDefaultsMap {
setDefaultIfEmpty(k, v)
}
}
func (c *Cluster) setClusterImageDefaults() {
systemImagesDefaultsMap := map[*string]string{
&c.SystemImages.Alpine: DefaultAplineImage,
&c.SystemImages.NginxProxy: DefaultNginxProxyImage,
&c.SystemImages.CertDownloader: DefaultCertDownloaderImage,
&c.SystemImages.KubeDNS: DefaultKubeDNSImage,
&c.SystemImages.KubeDNSSidecar: DefaultKubeDNSSidecarImage,
&c.SystemImages.DNSmasq: DefaultDNSmasqImage,
&c.SystemImages.KubeDNSAutoscaler: DefaultKubeDNSAutoScalerImage,
&c.SystemImages.KubernetesServicesSidecar: DefaultKubernetesServicesSidecarImage,
&c.SystemImages.Etcd: DefaultEtcdImage,
&c.SystemImages.Kubernetes: DefaultK8sImage,
&c.SystemImages.PodInfraContainer: DefaultInfraContainerImage,
&c.SystemImages.Flannel: DefaultFlannelImage,
&c.SystemImages.FlannelCNI: DefaultFlannelCNIImage,
&c.SystemImages.CalicoNode: DefaultCalicoNodeImage,
&c.SystemImages.CalicoCNI: DefaultCalicoCNIImage,
&c.SystemImages.CalicoControllers: DefaultCalicoControllersImage,
&c.SystemImages.CalicoCtl: DefaultCalicoctlImage,
&c.SystemImages.CanalNode: DefaultCanalNodeImage,
&c.SystemImages.CanalCNI: DefaultCanalCNIImage,
&c.SystemImages.CanalFlannel: DefaultCanalFlannelImage,
&c.SystemImages.WeaveNode: DefaultWeaveImage,
&c.SystemImages.WeaveCNI: DefaultWeaveCNIImage,
}
for k, v := range systemImagesDefaultsMap {
setDefaultIfEmpty(k, v)
}
}
func (c *Cluster) setClusterNetworkDefaults() {
setDefaultIfEmpty(&c.Network.Plugin, DefaultNetworkPlugin)
if c.Network.Options == nil {
// don't break if the user didn't define options
c.Network.Options = make(map[string]string)
}
networkPluginConfigDefaultsMap := make(map[string]string)
switch c.Network.Plugin {
case CalicoNetworkPlugin:
networkPluginConfigDefaultsMap = map[string]string{
CalicoCloudProvider: DefaultNetworkCloudProvider,
}
}
for k, v := range networkPluginConfigDefaultsMap {
setDefaultIfEmptyMapValue(c.Network.Options, k, v)
}
}