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plan.go
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package cluster
import (
"context"
"crypto/md5"
b64 "encoding/base64"
"encoding/json"
"fmt"
"net"
"path"
"strconv"
"strings"
"github.com/blang/semver"
"github.com/docker/docker/api/types"
"github.com/rancher/rke/docker"
"github.com/rancher/rke/hosts"
"github.com/rancher/rke/k8s"
"github.com/rancher/rke/metadata"
"github.com/rancher/rke/pki"
"github.com/rancher/rke/services"
v3 "github.com/rancher/rke/types"
"github.com/rancher/rke/util"
"github.com/sirupsen/logrus"
"sigs.k8s.io/yaml"
)
const (
ClusterCIDREnv = "RKE_CLUSTER_CIDR"
ClusterServiceCIDREnv = "RKE_CLUSTER_SERVICE_CIDR"
ClusterDNSServerEnv = "RKE_CLUSTER_DNS_SERVER"
ClusterDomainEnv = "RKE_CLUSTER_DOMAIN"
NodeAddressEnv = "RKE_NODE_ADDRESS"
NodeInternalAddressEnv = "RKE_NODE_INTERNAL_ADDRESS"
NodeNameOverrideEnv = "RKE_NODE_NAME_OVERRIDE"
NodePrefixPath = "RKE_NODE_PREFIX_PATH"
NetworkConfigurationEnv = "RKE_NETWORK_CONFIGURATION"
EtcdPathPrefix = "/registry"
CloudConfigSumEnv = "RKE_CLOUD_CONFIG_CHECKSUM"
CloudProviderNameEnv = "RKE_CLOUD_PROVIDER_NAME"
AuditLogConfigSumEnv = "RKE_AUDITLOG_CONFIG_CHECKSUM"
DefaultToolsEntrypoint = "/opt/rke-tools/entrypoint.sh"
DefaultToolsEntrypointVersion = "0.1.13"
LegacyToolsEntrypoint = "/opt/rke/entrypoint.sh"
KubeletDockerConfigEnv = "RKE_KUBELET_DOCKER_CONFIG"
KubeletDockerConfigFileEnv = "RKE_KUBELET_DOCKER_FILE"
KubeletDockerConfigPath = "/var/lib/kubelet/config.json"
// MaxEtcdOldEnvVersion The versions are maxed out for minor versions because -rancher1 suffix will cause semver to think its older, example: v1.15.0 > v1.15.0-rancher1
MaxEtcdOldEnvVersion = "v3.2.99"
MaxK8s115Version = "v1.15"
MaxEtcdPort4001Version = "v3.4.3-rancher99"
MaxEtcdNoStrictTLSVersion = "v3.4.14-rancher99"
MaxK8s121Version = "v1.21.99-rancher99"
MaxK8s122Version = "v1.22.99-rancher99"
EncryptionProviderConfigArgument = "encryption-provider-config"
KubeletCRIDockerdNameEnv = "RKE_KUBELET_CRIDOCKERD"
)
var (
admissionControlOptionNames = []string{"enable-admission-plugins", "admission-control"}
parsedRangeAtLeast123 = semver.MustParseRange(">= 1.23.0-rancher0")
parsedRangeAtLeast124 = semver.MustParseRange(">= 1.24.0-rancher0")
parsedRangeAtLeast125 = semver.MustParseRange(">= 1.25.0-rancher0")
parsedRange123 = semver.MustParseRange(">=1.23.0-rancher0 <=1.23.99-rancher-0")
parsedRange124 = semver.MustParseRange(">=1.24.0-rancher0 <=1.24.99-rancher-0")
)
func GetServiceOptionData(data map[string]interface{}) map[string]*v3.KubernetesServicesOptions {
svcOptionsData := map[string]*v3.KubernetesServicesOptions{}
k8sServiceOptions, _ := data["k8s-service-options"].(*v3.KubernetesServicesOptions)
if k8sServiceOptions != nil {
svcOptionsData["k8s-service-options"] = k8sServiceOptions
}
k8sWServiceOptions, _ := data["k8s-windows-service-options"].(*v3.KubernetesServicesOptions)
if k8sWServiceOptions != nil {
svcOptionsData["k8s-windows-service-options"] = k8sWServiceOptions
}
return svcOptionsData
}
func GeneratePlan(ctx context.Context, rkeConfig *v3.RancherKubernetesEngineConfig, hostsInfoMap map[string]types.Info, data map[string]interface{}) (v3.RKEPlan, error) {
clusterPlan := v3.RKEPlan{}
myCluster, err := InitClusterObject(ctx, rkeConfig, ExternalFlags{}, "")
if err != nil {
return clusterPlan, err
}
// rkeConfig.Nodes are already unique. But they don't have role flags. So I will use the parsed cluster.Hosts to make use of the role flags.
uniqHosts := hosts.GetUniqueHostList(myCluster.EtcdHosts, myCluster.ControlPlaneHosts, myCluster.WorkerHosts)
svcOptionData := GetServiceOptionData(data)
for _, host := range uniqHosts {
host.DockerInfo = hostsInfoMap[host.Address]
svcOptions, err := myCluster.GetKubernetesServicesOptions(host.DockerInfo.OSType, svcOptionData)
if err != nil {
return clusterPlan, err
}
clusterPlan.Nodes = append(clusterPlan.Nodes, BuildRKEConfigNodePlan(ctx, myCluster, host, svcOptions))
}
return clusterPlan, nil
}
func BuildRKEConfigNodePlan(ctx context.Context, myCluster *Cluster, host *hosts.Host, svcOptions v3.KubernetesServicesOptions) v3.RKEConfigNodePlan {
var portChecks []v3.PortCheck
processes := make(map[string]v3.Process)
host.SetPrefixPath(myCluster.getPrefixPath(host.OS()))
// Everybody gets a sidecar and a kubelet..
processes[services.SidekickContainerName] = myCluster.BuildSidecarProcess(host)
processes[services.KubeletContainerName] = myCluster.BuildKubeletProcess(host, svcOptions)
processes[services.KubeproxyContainerName] = myCluster.BuildKubeProxyProcess(host, svcOptions)
portChecks = append(portChecks, BuildPortChecksFromPortList(host, WorkerPortList, ProtocolTCP)...)
// Do we need an nginxProxy for this one ?
if !host.IsControl {
processes[services.NginxProxyContainerName] = myCluster.BuildProxyProcess(host)
}
if host.IsControl {
processes[services.KubeAPIContainerName] = myCluster.BuildKubeAPIProcess(host, svcOptions)
processes[services.KubeControllerContainerName] = myCluster.BuildKubeControllerProcess(host, svcOptions)
processes[services.SchedulerContainerName] = myCluster.BuildSchedulerProcess(host, svcOptions)
portChecks = append(portChecks, BuildPortChecksFromPortList(host, ControlPlanePortList, ProtocolTCP)...)
}
if host.IsEtcd {
processes[services.EtcdContainerName] = myCluster.BuildEtcdProcess(host, myCluster.EtcdReadyHosts, svcOptions)
portChecks = append(portChecks, BuildPortChecksFromPortList(host, EtcdPortList, ProtocolTCP)...)
}
files := []v3.File{
{
Name: cloudConfigFileName,
Contents: b64.StdEncoding.EncodeToString([]byte(myCluster.CloudConfigFile)),
},
}
if myCluster.IsEncryptionEnabled() {
files = append(files, v3.File{
Name: EncryptionProviderFilePath,
Contents: b64.StdEncoding.EncodeToString([]byte(myCluster.EncryptionConfig.EncryptionProviderFile)),
})
}
return v3.RKEConfigNodePlan{
Address: host.Address,
Processes: host.ProcessFilter(processes),
PortChecks: portChecks,
Files: files,
Annotations: map[string]string{
k8s.ExternalAddressAnnotation: host.Address,
k8s.InternalAddressAnnotation: host.InternalAddress,
},
Labels: host.ToAddLabels,
}
}
func (c *Cluster) BuildKubeAPIProcess(host *hosts.Host, serviceOptions v3.KubernetesServicesOptions) v3.Process {
// check if external etcd is used
etcdConnectionString := services.GetEtcdConnString(c.EtcdHosts, host.InternalAddress)
etcdPathPrefix := EtcdPathPrefix
etcdClientCert := pki.GetCertPath(pki.KubeNodeCertName)
etcdClientKey := pki.GetKeyPath(pki.KubeNodeCertName)
etcdCAClientCert := pki.GetCertPath(pki.CACertName)
if len(c.Services.Etcd.ExternalURLs) > 0 {
etcdConnectionString = strings.Join(c.Services.Etcd.ExternalURLs, ",")
etcdPathPrefix = c.Services.Etcd.Path
etcdClientCert = pki.GetCertPath(pki.EtcdClientCertName)
etcdClientKey = pki.GetKeyPath(pki.EtcdClientCertName)
etcdCAClientCert = pki.GetCertPath(pki.EtcdClientCACertName)
}
Command := c.getRKEToolsEntryPoint(host.OS(), "kube-apiserver")
CommandArgs := map[string]string{
"admission-control-config-file": DefaultKubeAPIArgAdmissionControlConfigFileValue,
"client-ca-file": pki.GetCertPath(pki.CACertName),
"cloud-provider": c.CloudProvider.Name,
"etcd-cafile": etcdCAClientCert,
"etcd-certfile": etcdClientCert,
"etcd-keyfile": etcdClientKey,
"etcd-prefix": etcdPathPrefix,
"etcd-servers": etcdConnectionString,
"kubelet-client-certificate": pki.GetCertPath(pki.KubeAPICertName),
"kubelet-client-key": pki.GetKeyPath(pki.KubeAPICertName),
"proxy-client-cert-file": pki.GetCertPath(pki.APIProxyClientCertName),
"proxy-client-key-file": pki.GetKeyPath(pki.APIProxyClientCertName),
"requestheader-allowed-names": pki.APIProxyClientCertName,
"requestheader-client-ca-file": pki.GetCertPath(pki.RequestHeaderCACertName),
"service-account-key-file": pki.GetKeyPath(pki.ServiceAccountTokenKeyName),
"service-cluster-ip-range": c.Services.KubeAPI.ServiceClusterIPRange,
"service-node-port-range": c.Services.KubeAPI.ServiceNodePortRange,
"tls-cert-file": pki.GetCertPath(pki.KubeAPICertName),
"tls-private-key-file": pki.GetKeyPath(pki.KubeAPICertName),
}
CommandArrayArgs := make(map[string][]string, len(c.Services.KubeAPI.ExtraArgsArray))
if len(c.CloudProvider.Name) > 0 {
CommandArgs["cloud-config"] = cloudConfigFileName
}
if c.Authentication.Webhook != nil {
CommandArgs["authentication-token-webhook-config-file"] = authnWebhookFileName
CommandArgs["authentication-token-webhook-cache-ttl"] = c.Authentication.Webhook.CacheTimeout
}
if len(c.CloudProvider.Name) > 0 {
c.Services.KubeAPI.ExtraEnv = append(
c.Services.KubeAPI.ExtraEnv,
fmt.Sprintf("%s=%s", CloudConfigSumEnv, getStringChecksum(c.CloudConfigFile)))
}
if c.EncryptionConfig.EncryptionProviderFile != "" {
CommandArgs[EncryptionProviderConfigArgument] = EncryptionProviderFilePath
}
if c.IsKubeletGenerateServingCertificateEnabled() {
CommandArgs["kubelet-certificate-authority"] = pki.GetCertPath(pki.CACertName)
}
if serviceOptions.KubeAPI != nil {
for k, v := range serviceOptions.KubeAPI {
// if the value is empty, we remove that option
if len(v) == 0 {
delete(CommandArgs, k)
continue
}
CommandArgs[k] = v
}
}
// check api server count for k8s v1.8
if util.GetTagMajorVersion(c.Version) == "v1.8" {
CommandArgs["apiserver-count"] = strconv.Itoa(len(c.ControlPlaneHosts))
}
if c.Authorization.Mode == services.RBACAuthorizationMode {
CommandArgs["authorization-mode"] = "Node,RBAC"
}
if len(host.InternalAddress) > 0 && net.ParseIP(host.InternalAddress) != nil {
CommandArgs["advertise-address"] = host.InternalAddress
}
admissionControlOptionName := ""
for _, optionName := range admissionControlOptionNames {
if _, ok := CommandArgs[optionName]; ok {
admissionControlOptionName = optionName
break
}
}
if c.Services.KubeAPI.PodSecurityPolicy {
CommandArgs["runtime-config"] = "policy/v1beta1/podsecuritypolicy=true"
CommandArgs[admissionControlOptionName] = CommandArgs[admissionControlOptionName] + ",PodSecurityPolicy"
}
if c.Services.KubeAPI.AlwaysPullImages {
CommandArgs[admissionControlOptionName] = CommandArgs[admissionControlOptionName] + ",AlwaysPullImages"
}
if c.Services.KubeAPI.EventRateLimit != nil && c.Services.KubeAPI.EventRateLimit.Enabled {
CommandArgs[admissionControlOptionName] = CommandArgs[admissionControlOptionName] + ",EventRateLimit"
}
if c.Services.KubeAPI.AuditLog != nil {
if alc := c.Services.KubeAPI.AuditLog.Configuration; alc != nil {
CommandArgs[KubeAPIArgAuditLogPath] = alc.Path
CommandArgs[KubeAPIArgAuditLogMaxAge] = strconv.Itoa(alc.MaxAge)
CommandArgs[KubeAPIArgAuditLogMaxBackup] = strconv.Itoa(alc.MaxBackup)
CommandArgs[KubeAPIArgAuditLogMaxSize] = strconv.Itoa(alc.MaxSize)
CommandArgs[KubeAPIArgAuditLogFormat] = alc.Format
CommandArgs[KubeAPIArgAuditPolicyFile] = DefaultKubeAPIArgAuditPolicyFileValue
}
}
VolumesFrom := []string{
services.SidekickContainerName,
}
Binds := []string{
fmt.Sprintf("%s:/etc/kubernetes:z", path.Join(host.PrefixPath, "/etc/kubernetes")),
}
if c.Services.KubeAPI.AuditLog != nil && c.Services.KubeAPI.AuditLog.Enabled {
Binds = append(Binds, fmt.Sprintf("%s:/var/log/kube-audit", path.Join(host.PrefixPath, "/var/log/kube-audit")))
bytes, err := yaml.Marshal(c.Services.KubeAPI.AuditLog.Configuration.Policy)
if err != nil {
logrus.Warnf("Error while marshalling auditlog policy: %v", err)
}
c.Services.KubeAPI.ExtraEnv = append(
c.Services.KubeAPI.ExtraEnv,
fmt.Sprintf("%s=%s", AuditLogConfigSumEnv, getStringChecksum(string(bytes))))
}
matchedRange, err := util.SemVerMatchRange(c.Version, util.SemVerK8sVersion122OrHigher)
if err != nil {
logrus.Debugf("Error while matching cluster version [%s] with range [%s]", c.Version, util.SemVerK8sVersion122OrHigher)
}
if matchedRange {
Binds = util.RemoveZFromBinds(Binds)
}
// Override args if they exist, add additional args
for arg, value := range c.Services.KubeAPI.ExtraArgs {
if _, ok := c.Services.KubeAPI.ExtraArgs[arg]; ok {
CommandArgs[arg] = value
}
}
for arg, value := range c.Services.KubeAPI.ExtraArgsArray {
CommandArrayArgs[arg] = value
}
Command = appendArgs(Command, CommandArgs)
Command = appendArrayArgs(Command, CommandArrayArgs)
Binds = append(Binds, c.Services.KubeAPI.ExtraBinds...)
healthCheck := v3.HealthCheck{
URL: services.GetHealthCheckURL(true, services.KubeAPIPort),
}
registryAuthConfig, _, _ := docker.GetImageRegistryConfig(c.Services.KubeAPI.Image, c.PrivateRegistriesMap)
return v3.Process{
Name: services.KubeAPIContainerName,
Command: Command,
VolumesFrom: VolumesFrom,
Binds: getUniqStringList(Binds),
Env: getUniqStringList(c.Services.KubeAPI.ExtraEnv),
NetworkMode: "host",
RestartPolicy: "always",
Image: c.Services.KubeAPI.Image,
HealthCheck: healthCheck,
ImageRegistryAuthConfig: registryAuthConfig,
Labels: map[string]string{
services.ContainerNameLabel: services.KubeAPIContainerName,
},
}
}
func (c *Cluster) BuildKubeControllerProcess(host *hosts.Host, serviceOptions v3.KubernetesServicesOptions) v3.Process {
Command := c.getRKEToolsEntryPoint(host.OS(), "kube-controller-manager")
CommandArgs := map[string]string{
"cloud-provider": c.CloudProvider.Name,
"cluster-cidr": c.ClusterCIDR,
"kubeconfig": pki.GetConfigPath(pki.KubeControllerCertName),
"root-ca-file": pki.GetCertPath(pki.CACertName),
"service-account-private-key-file": pki.GetKeyPath(pki.ServiceAccountTokenKeyName),
"service-cluster-ip-range": c.Services.KubeController.ServiceClusterIPRange,
}
CommandArrayArgs := make(map[string][]string, len(c.Services.KubeAPI.ExtraArgsArray))
// Best security practice is to listen on localhost, but DinD uses private container network instead of Host.
// the flag --address is removed since k8s 1.24
parsedVersion, err := getClusterVersion(c.Version)
if err != nil {
logrus.Warn(err)
}
if c.DinD && !parsedRangeAtLeast124(parsedVersion) {
CommandArgs["address"] = "0.0.0.0"
}
if len(c.CloudProvider.Name) > 0 {
CommandArgs["cloud-config"] = cloudConfigFileName
}
if len(c.CloudProvider.Name) > 0 {
c.Services.KubeController.ExtraEnv = append(
c.Services.KubeController.ExtraEnv,
fmt.Sprintf("%s=%s", CloudConfigSumEnv, getStringChecksum(c.CloudConfigFile)))
}
if serviceOptions.KubeController != nil {
for k, v := range serviceOptions.KubeController {
// if the value is empty, we remove that option
if len(v) == 0 {
delete(CommandArgs, k)
continue
}
CommandArgs[k] = v
}
}
args := []string{}
if c.Authorization.Mode == services.RBACAuthorizationMode {
args = append(args, "--use-service-account-credentials=true")
}
VolumesFrom := []string{
services.SidekickContainerName,
}
Binds := []string{
fmt.Sprintf("%s:/etc/kubernetes:z", path.Join(host.PrefixPath, "/etc/kubernetes")),
}
matchedRange, err := util.SemVerMatchRange(c.Version, util.SemVerK8sVersion122OrHigher)
if err != nil {
logrus.Debugf("Error while matching cluster version [%s] with range [%s]", c.Version, util.SemVerK8sVersion122OrHigher)
}
if matchedRange {
Binds = util.RemoveZFromBinds(Binds)
CommandArgs["authentication-kubeconfig"] = CommandArgs["kubeconfig"]
CommandArgs["authorization-kubeconfig"] = CommandArgs["kubeconfig"]
}
for arg, value := range c.Services.KubeController.ExtraArgs {
if _, ok := c.Services.KubeController.ExtraArgs[arg]; ok {
CommandArgs[arg] = value
}
}
for arg, value := range c.Services.KubeController.ExtraArgsArray {
CommandArrayArgs[arg] = value
}
Command = appendArgs(Command, CommandArgs)
Command = appendArrayArgs(Command, CommandArrayArgs)
k8sTag, err := util.GetImageTagFromImage(c.SystemImages.Kubernetes)
if err != nil {
logrus.Warn(err)
}
k8sSemVer, err := util.StrToSemVer(k8sTag)
if err != nil {
logrus.Warn(err)
}
maxK8s121Version, err := util.StrToSemVer(MaxK8s121Version)
if err != nil {
logrus.Warn(err)
}
Binds = append(Binds, c.Services.KubeController.ExtraBinds...)
healthCheck := v3.HealthCheck{}
if k8sSemVer.LessThan(*maxK8s121Version) {
healthCheck.URL = services.GetHealthCheckURL(false, services.KubeControllerPortMaxV121)
} else {
healthCheck.URL = services.GetHealthCheckURL(true, services.KubeControllerPort)
}
registryAuthConfig, _, _ := docker.GetImageRegistryConfig(c.Services.KubeController.Image, c.PrivateRegistriesMap)
return v3.Process{
Name: services.KubeControllerContainerName,
Command: Command,
Args: args,
VolumesFrom: VolumesFrom,
Binds: getUniqStringList(Binds),
Env: getUniqStringList(c.Services.KubeController.ExtraEnv),
NetworkMode: "host",
RestartPolicy: "always",
Image: c.Services.KubeController.Image,
HealthCheck: healthCheck,
ImageRegistryAuthConfig: registryAuthConfig,
Labels: map[string]string{
services.ContainerNameLabel: services.KubeControllerContainerName,
},
}
}
func (c *Cluster) BuildKubeletProcess(host *hosts.Host, serviceOptions v3.KubernetesServicesOptions) v3.Process {
kubelet := &c.Services.Kubelet
Command := c.getRKEToolsEntryPoint(host.OS(), "kubelet")
CommandArgs := map[string]string{
"client-ca-file": pki.GetCertPath(pki.CACertName),
"cloud-provider": c.CloudProvider.Name,
"cluster-dns": c.ClusterDNSServer,
"cluster-domain": c.ClusterDomain,
"fail-swap-on": strconv.FormatBool(kubelet.FailSwapOn),
// overrides kubernetes.io/hostname label on node, rke uses it to find node (services/node_util.go)
"hostname-override": host.HostnameOverride,
"kubeconfig": pki.GetConfigPath(pki.KubeNodeCertName),
"pod-infra-container-image": kubelet.InfraContainerImage,
"root-dir": path.Join(host.PrefixPath, "/var/lib/kubelet"),
}
if host.IsWindows() { // compatible with Windows
CommandArgs["kubeconfig"] = path.Join(host.PrefixPath, pki.GetConfigPath(pki.KubeNodeCertName))
CommandArgs["client-ca-file"] = path.Join(host.PrefixPath, pki.GetCertPath(pki.CACertName))
// this's a stopgap, we could drop this after https://github.com/kubernetes/kubernetes/pull/75618 merged
CommandArgs["pod-infra-container-image"] = c.SystemImages.WindowsPodInfraContainer
}
if c.DinD {
CommandArgs["healthz-bind-address"] = "0.0.0.0"
}
if host.IsControl && !host.IsWorker {
CommandArgs["register-with-taints"] = unschedulableControlTaint
}
if host.Address != host.InternalAddress {
CommandArgs["node-ip"] = host.InternalAddress
}
if len(c.CloudProvider.Name) > 0 {
CommandArgs["cloud-config"] = cloudConfigFileName
if host.IsWindows() { // compatible with Windows
CommandArgs["cloud-config"] = path.Join(host.PrefixPath, cloudConfigFileName)
}
}
if c.IsKubeletGenerateServingCertificateEnabled() {
CommandArgs["tls-cert-file"] = pki.GetCertPath(pki.GetCrtNameForHost(host, pki.KubeletCertName))
CommandArgs["tls-private-key-file"] = pki.GetCertPath(fmt.Sprintf("%s-key", pki.GetCrtNameForHost(host, pki.KubeletCertName)))
}
var Binds []string
if c.IsCRIDockerdEnabled() {
CommandArgs["container-runtime"] = "remote"
CommandArgs["container-runtime-endpoint"] = "/var/run/dockershim.sock"
parsedVersion, err := getClusterVersion(c.Version)
if err != nil {
logrus.Debugf("Error while parsing cluster version: %s", err)
}
// cri-dockerd must be enabled if the cluster version is 1.24 and higher
if parsedRangeAtLeast124(parsedVersion) {
CommandArgs["container-runtime-endpoint"] = "unix:///var/run/cri-dockerd.sock"
Binds = []string{fmt.Sprintf("%s:/var/lib/cri-dockerd:z", path.Join(host.PrefixPath, "/var/lib/cri-dockerd"))}
}
}
if serviceOptions.Kubelet != nil {
for k, v := range serviceOptions.Kubelet {
// if the value is empty, we remove that option
if len(v) == 0 {
delete(CommandArgs, k)
continue
}
// if the value is '', we set that option to empty string,
// e.g.: there's not cgroup on windows, we need to empty `enforce-node-allocatable` option
if v == "''" {
CommandArgs[k] = ""
continue
}
// if the value has [PREFIX_PATH] prefix, we need to replace it with `host.PrefixPath`,
// e.g.: windows allows to use other drivers than `c:`
if strings.HasPrefix(v, "[PREFIX_PATH]") {
CommandArgs[k] = path.Join(host.PrefixPath, strings.Replace(v, "[PREFIX_PATH]", "", -1))
continue
}
CommandArgs[k] = v
}
}
VolumesFrom := []string{
services.SidekickContainerName,
}
if host.IsWindows() { // compatible with Windows
Binds = append(Binds, []string{
// put the execution binaries and cloud provider configuration to the host
fmt.Sprintf("%s:c:/host/etc/kubernetes", path.Join(host.PrefixPath, "/etc/kubernetes")),
// put the flexvolume plugins or private registry docker configuration to the host
fmt.Sprintf("%s:c:/host/var/lib/kubelet", path.Join(host.PrefixPath, "/var/lib/kubelet")),
// exchange resources with other components
fmt.Sprintf("%s:c:/host/run", path.Join(host.PrefixPath, "/run")),
}...)
} else {
Binds = append(Binds, []string{
fmt.Sprintf("%s:/etc/kubernetes:z", path.Join(host.PrefixPath, "/etc/kubernetes")),
"/etc/cni:/etc/cni:rw,z",
"/opt/cni:/opt/cni:rw,z",
fmt.Sprintf("%s:/var/lib/cni:z", path.Join(host.PrefixPath, "/var/lib/cni")),
"/var/lib/calico:/var/lib/calico:z",
"/etc/resolv.conf:/etc/resolv.conf",
"/sys:/sys:rprivate",
host.DockerInfo.DockerRootDir + ":" + host.DockerInfo.DockerRootDir + ":rw,rslave,z",
fmt.Sprintf("%s:%s:shared,z", path.Join(host.PrefixPath, "/var/lib/kubelet"), path.Join(host.PrefixPath, "/var/lib/kubelet")),
"/var/lib/rancher:/var/lib/rancher:shared,z",
"/var/run:/var/run:rw,rprivate",
"/run:/run:rprivate",
fmt.Sprintf("%s:/etc/ceph", path.Join(host.PrefixPath, "/etc/ceph")),
"/dev:/host/dev:rprivate",
"/var/log/containers:/var/log/containers:z",
"/var/log/pods:/var/log/pods:z",
"/usr:/host/usr:ro",
"/etc:/host/etc:ro",
}...)
// Special case to simplify using flex volumes
if path.Join(host.PrefixPath, "/var/lib/kubelet") != "/var/lib/kubelet" {
Binds = append(Binds, "/var/lib/kubelet/volumeplugins:/var/lib/kubelet/volumeplugins:shared,z")
}
}
matchedRange, err := util.SemVerMatchRange(c.Version, util.SemVerK8sVersion122OrHigher)
if err != nil {
logrus.Debugf("Error while matching cluster version [%s] with range [%s]", c.Version, util.SemVerK8sVersion122OrHigher)
}
if matchedRange {
Binds = util.RemoveZFromBinds(Binds)
}
Binds = append(Binds, host.GetExtraBinds(kubelet.BaseService)...)
Env := host.GetExtraEnv(kubelet.BaseService)
if c.IsCRIDockerdEnabled() {
Env = append(Env,
// Enable running cri-dockerd
fmt.Sprintf("%s=%s", KubeletCRIDockerdNameEnv, "true"))
}
if len(c.CloudProvider.Name) > 0 {
Env = append(Env,
fmt.Sprintf("%s=%s", CloudConfigSumEnv, getStringChecksum(c.CloudConfigFile)))
}
if len(c.PrivateRegistriesMap) > 0 {
kubeletDockerConfig, _ := docker.GetKubeletDockerConfig(c.PrivateRegistriesMap)
Env = append(Env,
fmt.Sprintf("%s=%s", KubeletDockerConfigEnv,
b64.StdEncoding.EncodeToString([]byte(kubeletDockerConfig))))
Env = append(Env,
fmt.Sprintf("%s=%s", KubeletDockerConfigFileEnv, path.Join(host.PrefixPath, KubeletDockerConfigPath)))
}
if host.IsWindows() { // compatible with Windows
Env = append(Env, c.getWindowsEnv(host)...)
}
for arg, value := range host.GetExtraArgs(kubelet.BaseService) {
CommandArgs[arg] = value
}
extraArgsArray := host.GetExtraArgsArray(kubelet.BaseService)
CommandArrayArgs := make(map[string][]string, len(extraArgsArray))
for arg, value := range extraArgsArray {
CommandArrayArgs[arg] = value
}
// If nodelocal DNS is configured, set cluster-dns to local IP
if c.DNS.Nodelocal != nil && c.DNS.Nodelocal.IPAddress != "" {
CommandArgs["cluster-dns"] = c.DNS.Nodelocal.IPAddress
}
Command = appendArgs(Command, CommandArgs)
Command = appendArrayArgs(Command, CommandArrayArgs)
healthCheck := v3.HealthCheck{
URL: services.GetHealthCheckURL(false, services.KubeletPort),
}
registryAuthConfig, _, _ := docker.GetImageRegistryConfig(kubelet.Image, c.PrivateRegistriesMap)
return v3.Process{
Name: services.KubeletContainerName,
Command: Command,
VolumesFrom: VolumesFrom,
Binds: getUniqStringList(Binds),
Env: getUniqStringList(Env),
NetworkMode: "host",
RestartPolicy: "always",
Image: kubelet.Image,
PidMode: "host",
Privileged: true,
HealthCheck: healthCheck,
ImageRegistryAuthConfig: registryAuthConfig,
Labels: map[string]string{
services.ContainerNameLabel: services.KubeletContainerName,
},
}
}
func (c *Cluster) BuildKubeProxyProcess(host *hosts.Host, serviceOptions v3.KubernetesServicesOptions) v3.Process {
kubeproxy := &c.Services.Kubeproxy
Command := c.getRKEToolsEntryPoint(host.OS(), "kube-proxy")
CommandArgs := map[string]string{
"cluster-cidr": c.ClusterCIDR,
"hostname-override": host.HostnameOverride,
"kubeconfig": pki.GetConfigPath(pki.KubeProxyCertName),
}
if host.IsWindows() { // compatible with Windows
CommandArgs["kubeconfig"] = path.Join(host.PrefixPath, pki.GetConfigPath(pki.KubeProxyCertName))
}
if serviceOptions.Kubeproxy != nil {
for k, v := range serviceOptions.Kubeproxy {
// if the value is empty, we remove that option
if len(v) == 0 {
delete(CommandArgs, k)
continue
}
CommandArgs[k] = v
}
}
// If cloudprovider is set (not empty), set the bind address because the node will not be able to retrieve it's IP address in case cloud provider changes the node object name (i.e. AWS and Openstack)
if c.CloudProvider.Name != "" {
if host.InternalAddress != "" && host.Address != host.InternalAddress {
CommandArgs["bind-address"] = host.InternalAddress
} else {
CommandArgs["bind-address"] = host.Address
}
if c.CloudProvider.Name == k8s.AWSCloudProvider && c.CloudProvider.UseInstanceMetadataHostname != nil && *c.CloudProvider.UseInstanceMetadataHostname {
// rke-tools will inject hostname-override from ec2 instance metadata to match with the spec.nodeName set by cloud provider https://github.com/rancher/rke-tools/blob/3eab4f07aa97a8aeeaaef55b1b7bbc82e2a3374a/entrypoint.sh#L17
delete(CommandArgs, "hostname-override")
}
}
// Best security practice is to listen on localhost, but DinD uses private container network instead of Host.
if c.DinD {
CommandArgs["healthz-bind-address"] = "0.0.0.0"
}
VolumesFrom := []string{
services.SidekickContainerName,
}
// TODO: we should reevaluate if any of the bind mounts here should be using read-only mode
var Binds []string
if host.IsWindows() { // compatible with Windows
Binds = []string{
// put the execution binaries to the host
fmt.Sprintf("%s:c:/host/etc/kubernetes", path.Join(host.PrefixPath, "/etc/kubernetes")),
// exchange resources with other components
fmt.Sprintf("%s:c:/host/run", path.Join(host.PrefixPath, "/run")),
}
} else {
Binds = []string{
fmt.Sprintf("%s:/etc/kubernetes:z", path.Join(host.PrefixPath, "/etc/kubernetes")),
"/run:/run",
}
BindModules := "/lib/modules:/lib/modules:ro"
Binds = append(Binds, BindModules)
}
matchedRange, err := util.SemVerMatchRange(c.Version, util.SemVerK8sVersion122OrHigher)
if err != nil {
logrus.Debugf("Error while matching cluster version [%s] with range [%s]", c.Version, util.SemVerK8sVersion122OrHigher)
}
if matchedRange {
Binds = util.RemoveZFromBinds(Binds)
}
Binds = append(Binds, host.GetExtraBinds(kubeproxy.BaseService)...)
Env := host.GetExtraEnv(kubeproxy.BaseService)
if host.IsWindows() { // compatible with Windows
Env = append(Env, c.getWindowsEnv(host)...)
}
for arg, value := range host.GetExtraArgs(kubeproxy.BaseService) {
CommandArgs[arg] = value
}
extraArgsArray := host.GetExtraArgsArray(kubeproxy.BaseService)
CommandArrayArgs := make(map[string][]string, len(extraArgsArray))
for arg, value := range extraArgsArray {
CommandArrayArgs[arg] = value
}
Command = appendArgs(Command, CommandArgs)
Command = appendArrayArgs(Command, CommandArrayArgs)
healthCheck := v3.HealthCheck{
URL: services.GetHealthCheckURL(false, services.KubeproxyPort),
}
registryAuthConfig, _, _ := docker.GetImageRegistryConfig(kubeproxy.Image, c.PrivateRegistriesMap)
return v3.Process{
Name: services.KubeproxyContainerName,
Command: Command,
VolumesFrom: VolumesFrom,
Binds: getUniqStringList(Binds),
Env: getUniqStringList(Env),
NetworkMode: "host",
RestartPolicy: "always",
PidMode: "host",
Privileged: true,
HealthCheck: healthCheck,
Image: kubeproxy.Image,
ImageRegistryAuthConfig: registryAuthConfig,
Labels: map[string]string{
services.ContainerNameLabel: services.KubeproxyContainerName,
},
}
}
func (c *Cluster) BuildProxyProcess(host *hosts.Host) v3.Process {
Command := c.getNginxEntryPoint(host.OS())
nginxProxyEnv := ""
for i, host := range c.ControlPlaneHosts {
nginxProxyEnv += fmt.Sprintf("%s", host.InternalAddress)
if i < (len(c.ControlPlaneHosts) - 1) {
nginxProxyEnv += ","
}
}
Env := []string{fmt.Sprintf("%s=%s", services.NginxProxyEnvName, nginxProxyEnv)}
if host.IsWindows() {
Env = append(Env, c.getWindowsEnv(host)...) // mostly need prefix path
}
VolumesFrom := []string{}
if host.IsWindows() { // compatible withe Windows
VolumesFrom = []string{
services.SidekickContainerName,
}
}
Binds := []string{}
if host.IsWindows() { // compatible with Windows
Binds = []string{
// put the execution binaries and generate the configuration to the host
fmt.Sprintf("%s:c:/host/etc/nginx", path.Join(host.PrefixPath, "/etc/nginx")),
// exchange resources with other components
fmt.Sprintf("%s:c:/host/run", path.Join(host.PrefixPath, "/run")),
}
}
registryAuthConfig, _, _ := docker.GetImageRegistryConfig(c.SystemImages.NginxProxy, c.PrivateRegistriesMap)
return v3.Process{
Name: services.NginxProxyContainerName,
Env: Env,
// we do this to force container update when CP hosts change.
Args: Env,
Command: Command,
NetworkMode: "host",
RestartPolicy: "always",
Binds: Binds,
VolumesFrom: VolumesFrom,
HealthCheck: v3.HealthCheck{},
Image: c.SystemImages.NginxProxy,
ImageRegistryAuthConfig: registryAuthConfig,
Labels: map[string]string{
services.ContainerNameLabel: services.NginxProxyContainerName,
},
}
}
func (c *Cluster) BuildSchedulerProcess(host *hosts.Host, serviceOptions v3.KubernetesServicesOptions) v3.Process {
Command := c.getRKEToolsEntryPoint(host.OS(), "kube-scheduler")
CommandArgs := map[string]string{
"kubeconfig": pki.GetConfigPath(pki.KubeSchedulerCertName),
}
CommandArrayArgs := make(map[string][]string, len(c.Services.KubeAPI.ExtraArgsArray))
// Best security practice is to listen on localhost, but DinD uses private container network instead of Host.
// the flag --address is removed since k8s 1.24
parsedVersion, _ := getClusterVersion(c.Version)
if c.DinD && !parsedRangeAtLeast124(parsedVersion) {
CommandArgs["address"] = "0.0.0.0"
}
if serviceOptions.Scheduler != nil {
for k, v := range serviceOptions.Scheduler {
// if the value is empty, we remove that option
if len(v) == 0 {
delete(CommandArgs, k)
continue
}
CommandArgs[k] = v
}
}
VolumesFrom := []string{
services.SidekickContainerName,
}
Binds := []string{
fmt.Sprintf("%s:/etc/kubernetes:z", path.Join(host.PrefixPath, "/etc/kubernetes")),
}
matchedRange, err := util.SemVerMatchRange(c.Version, util.SemVerK8sVersion122OrHigher)
if err != nil {
logrus.Debugf("Error while matching cluster version [%s] with range [%s]", c.Version, util.SemVerK8sVersion122OrHigher)
}
if matchedRange {
Binds = util.RemoveZFromBinds(Binds)
CommandArgs["authentication-kubeconfig"] = CommandArgs["kubeconfig"]
CommandArgs["authorization-kubeconfig"] = CommandArgs["kubeconfig"]
}
for arg, value := range c.Services.Scheduler.ExtraArgs {
if _, ok := c.Services.Scheduler.ExtraArgs[arg]; ok {
CommandArgs[arg] = value
}
}
for arg, value := range c.Services.Scheduler.ExtraArgsArray {
CommandArrayArgs[arg] = value
}
Command = appendArgs(Command, CommandArgs)
Command = appendArrayArgs(Command, CommandArrayArgs)
Binds = append(Binds, c.Services.Scheduler.ExtraBinds...)
maxK8s122Version, err := util.StrToSemVer(MaxK8s122Version)
if err != nil {
logrus.Warn(err)
}
k8sTag, err := util.GetImageTagFromImage(c.SystemImages.Kubernetes)
if err != nil {
logrus.Warn(err)
}
k8sSemVer, err := util.StrToSemVer(k8sTag)
if err != nil {
logrus.Warn(err)
}
healthCheck := v3.HealthCheck{}
if k8sSemVer != nil && k8sSemVer.LessThan(*maxK8s122Version) {
healthCheck.URL = services.GetHealthCheckURL(false, services.SchedulerPortMaxV122)
} else {
healthCheck.URL = services.GetHealthCheckURL(true, services.SchedulerPort)
}
registryAuthConfig, _, _ := docker.GetImageRegistryConfig(c.Services.Scheduler.Image, c.PrivateRegistriesMap)
return v3.Process{
Name: services.SchedulerContainerName,
Command: Command,
Binds: getUniqStringList(Binds),
Env: c.Services.Scheduler.ExtraEnv,
VolumesFrom: VolumesFrom,
NetworkMode: "host",
RestartPolicy: "always",
Image: c.Services.Scheduler.Image,
HealthCheck: healthCheck,
ImageRegistryAuthConfig: registryAuthConfig,
Labels: map[string]string{
services.ContainerNameLabel: services.SchedulerContainerName,
},
}
}
func (c *Cluster) BuildSidecarProcess(host *hosts.Host) v3.Process {
Command := c.getSidecarEntryPoint(host.OS())
Env := []string{}
if host.IsWindows() { // compatible with Windows
Env = append(Env, c.getWindowsEnv(host)...)
Env = append(Env,
// sidekick needs the node name to drive the cni network management, e.g: flanneld
fmt.Sprintf("%s=%s", NodeNameOverrideEnv, host.HostnameOverride),
// sidekick use the network configuration to drive the cni network management, e.g: flanneld
fmt.Sprintf("%s=%s", NetworkConfigurationEnv, getNetworkJSON(c.Network)),
)
}
Binds := []string{}
if host.IsWindows() { // compatible with Windows
Binds = []string{
// put the execution binaries and the cni binaries to the host
fmt.Sprintf("%s:c:/host/opt", path.Join(host.PrefixPath, "/opt")),
// access to the etc dir for k8s certs to make a copy for flannel
fmt.Sprintf("%s:c:/host/etc", path.Join(host.PrefixPath, "/etc")),
// put the cni configuration to the host
fmt.Sprintf("%s:c:/host/etc/cni/net.d", path.Join(host.PrefixPath, "/etc/cni/net.d")),
// put the cni network component configuration to the host
fmt.Sprintf("%s:c:/host/etc/kube-flannel", path.Join(host.PrefixPath, "/etc/kube-flannel")),
// exchange resources with other components
fmt.Sprintf("%s:c:/host/run", path.Join(host.PrefixPath, "/run")),
}
}
RestartPolicy := ""
if host.IsWindows() { // compatible with Windows
RestartPolicy = "always"
}
NetworkMode := "none"
if host.IsWindows() { // compatible with Windows
NetworkMode = ""
}
registryAuthConfig, _, _ := docker.GetImageRegistryConfig(c.SystemImages.KubernetesServicesSidecar, c.PrivateRegistriesMap)
return v3.Process{
Name: services.SidekickContainerName,
NetworkMode: NetworkMode,
RestartPolicy: RestartPolicy,
Binds: getUniqStringList(Binds),
Env: getUniqStringList(Env),
Image: c.SystemImages.KubernetesServicesSidecar,
HealthCheck: v3.HealthCheck{},
ImageRegistryAuthConfig: registryAuthConfig,
Labels: map[string]string{
services.ContainerNameLabel: services.SidekickContainerName,
},
Command: Command,
}
}
func (c *Cluster) BuildEtcdProcess(host *hosts.Host, etcdHosts []*hosts.Host, serviceOptions v3.KubernetesServicesOptions) v3.Process {
nodeName := pki.GetCrtNameForHost(host, pki.EtcdCertName)
initCluster := ""
architecture := host.DockerInfo.Architecture
if len(etcdHosts) == 0 {
initCluster = services.GetEtcdInitialCluster(c.EtcdHosts)
} else {
initCluster = services.GetEtcdInitialCluster(etcdHosts)
}
clusterState := "new"
if host.ExistingEtcdCluster {
clusterState = "existing"
}
args := []string{
"/usr/local/bin/etcd",
}