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ignition.go
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ignition.go
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package image
import (
"context"
"fmt"
"net"
"net/url"
"path"
"path/filepath"
"strings"
"github.com/coreos/ignition/v2/config/util"
igntypes "github.com/coreos/ignition/v2/config/v3_2/types"
"github.com/coreos/stream-metadata-go/arch"
"github.com/google/uuid"
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
"gopkg.in/yaml.v2"
hiveext "github.com/openshift/assisted-service/api/hiveextension/v1beta1"
"github.com/openshift/assisted-service/api/v1beta1"
"github.com/openshift/assisted-service/models"
"github.com/openshift/installer/pkg/asset"
"github.com/openshift/installer/pkg/asset/agent/agentconfig"
"github.com/openshift/installer/pkg/asset/agent/manifests"
"github.com/openshift/installer/pkg/asset/agent/mirror"
"github.com/openshift/installer/pkg/asset/ignition"
"github.com/openshift/installer/pkg/asset/ignition/bootstrap"
"github.com/openshift/installer/pkg/asset/password"
"github.com/openshift/installer/pkg/asset/tls"
"github.com/openshift/installer/pkg/rhcos"
"github.com/openshift/installer/pkg/types"
"github.com/openshift/installer/pkg/types/agent"
"github.com/openshift/installer/pkg/version"
)
const rendezvousHostEnvPath = "/etc/assisted/rendezvous-host.env"
const manifestPath = "/etc/assisted/manifests"
const hostnamesPath = "/etc/assisted/hostnames"
const nmConnectionsPath = "/etc/assisted/network"
const extraManifestPath = "/etc/assisted/extra-manifests"
const registriesConfPath = "/etc/containers/registries.conf"
const registryCABundlePath = "/etc/pki/ca-trust/source/anchors/domain.crt"
// Ignition is an asset that generates the agent installer ignition file.
type Ignition struct {
Config *igntypes.Config
CPUArch string
RendezvousIP string
}
// agentTemplateData is the data used to replace values in agent template
// files.
type agentTemplateData struct {
ServiceProtocol string
PullSecret string
ControlPlaneAgents int
WorkerAgents int
ReleaseImages string
ReleaseImage string
ReleaseImageMirror string
HaveMirrorConfig bool
PublicContainerRegistries string
InfraEnvID string
ClusterName string
OSImage *models.OsImage
Proxy *v1beta1.Proxy
ConfigImageFiles string
}
// Name returns the human-friendly name of the asset.
func (a *Ignition) Name() string {
return "Agent Installer Ignition"
}
// Dependencies returns the assets on which the Ignition asset depends.
func (a *Ignition) Dependencies() []asset.Asset {
return []asset.Asset{
&manifests.AgentManifests{},
&manifests.ExtraManifests{},
&tls.KubeAPIServerLBSignerCertKey{},
&tls.KubeAPIServerLocalhostSignerCertKey{},
&tls.KubeAPIServerServiceNetworkSignerCertKey{},
&tls.AdminKubeConfigSignerCertKey{},
&password.KubeadminPassword{},
&agentconfig.AgentConfig{},
&mirror.RegistriesConf{},
&mirror.CaBundle{},
}
}
// Generate generates the agent installer ignition.
func (a *Ignition) Generate(dependencies asset.Parents) error {
agentManifests := &manifests.AgentManifests{}
agentConfigAsset := &agentconfig.AgentConfig{}
extraManifests := &manifests.ExtraManifests{}
dependencies.Get(agentManifests, agentConfigAsset, extraManifests)
pwd := &password.KubeadminPassword{}
dependencies.Get(pwd)
pwdHash := string(pwd.PasswordHash)
infraEnv := agentManifests.InfraEnv
config := igntypes.Config{
Ignition: igntypes.Ignition{
Version: igntypes.MaxVersion.String(),
},
Passwd: igntypes.Passwd{
Users: []igntypes.PasswdUser{
{
Name: "core",
SSHAuthorizedKeys: []igntypes.SSHAuthorizedKey{
igntypes.SSHAuthorizedKey(infraEnv.Spec.SSHAuthorizedKey),
},
PasswordHash: &pwdHash,
},
},
},
}
nodeZeroIP, err := RetrieveRendezvousIP(agentConfigAsset.Config, agentManifests.NMStateConfigs)
if err != nil {
return err
}
logrus.Infof("The rendezvous host IP (node0 IP) is %s", nodeZeroIP)
a.RendezvousIP = nodeZeroIP
// Default to x86_64
archName := arch.RpmArch(types.ArchitectureAMD64)
if infraEnv.Spec.CpuArchitecture != "" {
archName = infraEnv.Spec.CpuArchitecture
}
releaseImageList, err := releaseImageList(agentManifests.ClusterImageSet.Spec.ReleaseImage, archName)
if err != nil {
return err
}
registriesConfig := &mirror.RegistriesConf{}
registryCABundle := &mirror.CaBundle{}
dependencies.Get(registriesConfig, registryCABundle)
publicContainerRegistries := getPublicContainerRegistries(registriesConfig)
releaseImageMirror := mirror.GetMirrorFromRelease(agentManifests.ClusterImageSet.Spec.ReleaseImage, registriesConfig)
infraEnvID := uuid.New().String()
logrus.Debug("Generated random infra-env id ", infraEnvID)
osImage, err := getOSImagesInfo(archName)
if err != nil {
return err
}
a.CPUArch = *osImage.CPUArchitecture
clusterName := fmt.Sprintf("%s.%s",
agentManifests.ClusterDeployment.Spec.ClusterName,
agentManifests.ClusterDeployment.Spec.BaseDomain)
agentTemplateData := getTemplateData(
clusterName,
agentManifests.GetPullSecretData(),
releaseImageList,
agentManifests.ClusterImageSet.Spec.ReleaseImage,
releaseImageMirror,
len(registriesConfig.MirrorConfig) > 0,
publicContainerRegistries,
agentManifests.AgentClusterInstall,
infraEnvID,
osImage,
infraEnv.Spec.Proxy)
err = bootstrap.AddStorageFiles(&config, "/", "agent/files", agentTemplateData)
if err != nil {
return err
}
rendezvousHostFile := ignition.FileFromString(rendezvousHostEnvPath,
"root", 0644,
getRendezvousHostEnv(agentTemplateData.ServiceProtocol, nodeZeroIP))
config.Storage.Files = append(config.Storage.Files, rendezvousHostFile)
err = addBootstrapScripts(&config, agentManifests.ClusterImageSet.Spec.ReleaseImage)
if err != nil {
return err
}
// add ZTP manifests to manifestPath
for _, file := range agentManifests.FileList {
manifestFile := ignition.FileFromBytes(filepath.Join(manifestPath, filepath.Base(file.Filename)),
"root", 0600, file.Data)
config.Storage.Files = append(config.Storage.Files, manifestFile)
}
// add AgentConfig if provided
if agentConfigAsset.Config != nil {
agentConfigFile := ignition.FileFromBytes(filepath.Join(manifestPath, filepath.Base(agentConfigAsset.File.Filename)),
"root", 0600, agentConfigAsset.File.Data)
config.Storage.Files = append(config.Storage.Files, agentConfigFile)
}
addMacAddressToHostnameMappings(&config, agentConfigAsset)
err = addStaticNetworkConfig(&config, agentManifests.StaticNetworkConfigs)
if err != nil {
return err
}
enabledServices := getDefaultEnabledServices()
// Enable pre-network-manager-config.service only when there are network configs defined
if len(agentManifests.StaticNetworkConfigs) != 0 {
enabledServices = append(enabledServices, "pre-network-manager-config.service")
}
err = bootstrap.AddSystemdUnits(&config, "agent/systemd/units", agentTemplateData, enabledServices)
if err != nil {
return err
}
addTLSData(&config, dependencies)
addMirrorData(&config, registriesConfig, registryCABundle)
err = addHostConfig(&config, agentConfigAsset)
if err != nil {
return err
}
err = addExtraManifests(&config, extraManifests)
if err != nil {
return err
}
a.Config = &config
return nil
}
func getDefaultEnabledServices() []string {
return []string{
"agent-interactive-console.service",
"agent.service",
"assisted-service-db.service",
"assisted-service-pod.service",
"assisted-service.service",
"create-cluster-and-infraenv.service",
"node-zero.service",
"multipathd.service",
"selinux.service",
"install-status.service",
"set-hostname.service",
"start-cluster-installation.service",
}
}
func addBootstrapScripts(config *igntypes.Config, releaseImage string) (err error) {
// Set up bootstrap service recording
if err := bootstrap.AddStorageFiles(config,
"/usr/local/bin/bootstrap-service-record.sh",
"bootstrap/files/usr/local/bin/bootstrap-service-record.sh",
nil); err != nil {
return err
}
// Use bootstrap script to get container images
relImgData := struct{ ReleaseImage string }{
ReleaseImage: releaseImage,
}
for _, script := range []string{"release-image.sh", "release-image-download.sh"} {
if err := bootstrap.AddStorageFiles(config,
"/usr/local/bin/"+script,
"bootstrap/files/usr/local/bin/"+script+".template",
relImgData); err != nil {
return err
}
}
return nil
}
func getTemplateData(name, pullSecret, releaseImageList, releaseImage,
releaseImageMirror string, haveMirrorConfig bool, publicContainerRegistries string,
agentClusterInstall *hiveext.AgentClusterInstall,
infraEnvID string,
osImage *models.OsImage,
proxy *v1beta1.Proxy) *agentTemplateData {
return &agentTemplateData{
ServiceProtocol: "http",
PullSecret: pullSecret,
ControlPlaneAgents: agentClusterInstall.Spec.ProvisionRequirements.ControlPlaneAgents,
WorkerAgents: agentClusterInstall.Spec.ProvisionRequirements.WorkerAgents,
ReleaseImages: releaseImageList,
ReleaseImage: releaseImage,
ReleaseImageMirror: releaseImageMirror,
HaveMirrorConfig: haveMirrorConfig,
PublicContainerRegistries: publicContainerRegistries,
InfraEnvID: infraEnvID,
ClusterName: name,
OSImage: osImage,
Proxy: proxy,
}
}
func getRendezvousHostEnv(serviceProtocol, nodeZeroIP string) string {
serviceBaseURL := url.URL{
Scheme: serviceProtocol,
Host: net.JoinHostPort(nodeZeroIP, "8090"),
Path: "/",
}
imageServiceBaseURL := url.URL{
Scheme: serviceProtocol,
Host: net.JoinHostPort(nodeZeroIP, "8888"),
Path: "/",
}
return fmt.Sprintf(`NODE_ZERO_IP=%s
SERVICE_BASE_URL=%s
IMAGE_SERVICE_BASE_URL=%s
`, nodeZeroIP, serviceBaseURL.String(), imageServiceBaseURL.String())
}
func addStaticNetworkConfig(config *igntypes.Config, staticNetworkConfig []*models.HostStaticNetworkConfig) (err error) {
if len(staticNetworkConfig) == 0 {
return nil
}
// Get the static network configuration from nmstate and generate NetworkManager ignition files
filesList, err := manifests.GetNMIgnitionFiles(staticNetworkConfig)
if err != nil {
return err
}
for i := range filesList {
nmFilePath := path.Join(nmConnectionsPath, filesList[i].FilePath)
nmStateIgnFile := ignition.FileFromBytes(nmFilePath, "root", 0600, []byte(filesList[i].FileContents))
config.Storage.Files = append(config.Storage.Files, nmStateIgnFile)
}
nmStateScriptFilePath := "/usr/local/bin/pre-network-manager-config.sh"
// A local version of the assisted-service internal script is currently used
nmStateScript := ignition.FileFromBytes(nmStateScriptFilePath, "root", 0755, []byte(manifests.PreNetworkConfigScript))
config.Storage.Files = append(config.Storage.Files, nmStateScript)
return nil
}
func addTLSData(config *igntypes.Config, dependencies asset.Parents) {
certKeys := []asset.Asset{
&tls.KubeAPIServerLBSignerCertKey{},
&tls.KubeAPIServerLocalhostSignerCertKey{},
&tls.KubeAPIServerServiceNetworkSignerCertKey{},
&tls.AdminKubeConfigSignerCertKey{},
}
dependencies.Get(certKeys...)
for _, ck := range certKeys {
for _, d := range ck.(asset.WritableAsset).Files() {
f := ignition.FileFromBytes(path.Join("/opt/agent", d.Filename), "root", 0600, d.Data)
config.Storage.Files = append(config.Storage.Files, f)
}
}
pwd := &password.KubeadminPassword{}
dependencies.Get(pwd)
config.Storage.Files = append(config.Storage.Files,
ignition.FileFromBytes("/opt/agent/tls/kubeadmin-password.hash", "root", 0600, pwd.PasswordHash))
}
func addMirrorData(config *igntypes.Config, registriesConfig *mirror.RegistriesConf, registryCABundle *mirror.CaBundle) {
// This is required for assisted-service to build the ICSP for openshift-install
if registriesConfig.File != nil {
registriesFile := ignition.FileFromBytes(registriesConfPath,
"root", 0600, registriesConfig.File.Data)
config.Storage.Files = append(config.Storage.Files, registriesFile)
}
// This is required for the agent to run the podman commands to the mirror
if registryCABundle.File != nil && len(registryCABundle.File.Data) > 0 {
caFile := ignition.FileFromBytes(registryCABundlePath,
"root", 0600, registryCABundle.File.Data)
config.Storage.Files = append(config.Storage.Files, caFile)
}
}
// Creates a file named with a host's MAC address. The desired hostname
// is the file's content. The files are read by a systemd service that
// sets the hostname using "hostnamectl set-hostname" when the ISO boots.
func addMacAddressToHostnameMappings(
config *igntypes.Config,
agentConfigAsset *agentconfig.AgentConfig) {
if agentConfigAsset.Config == nil || len(agentConfigAsset.Config.Hosts) == 0 {
return
}
for _, host := range agentConfigAsset.Config.Hosts {
if host.Hostname != "" {
file := ignition.FileFromBytes(filepath.Join(hostnamesPath,
strings.ToLower(filepath.Base(host.Interfaces[0].MacAddress))),
"root", 0600, []byte(host.Hostname))
config.Storage.Files = append(config.Storage.Files, file)
}
}
}
func addHostConfig(config *igntypes.Config, agentConfig *agentconfig.AgentConfig) error {
confs, err := agentConfig.HostConfigFiles()
if err != nil {
return err
}
for path, content := range confs {
hostConfigFile := ignition.FileFromBytes(filepath.Join("/etc/assisted/hostconfig", path), "root", 0644, content)
config.Storage.Files = append(config.Storage.Files, hostConfigFile)
}
return nil
}
func addExtraManifests(config *igntypes.Config, extraManifests *manifests.ExtraManifests) error {
user := "root"
mode := 0644
config.Storage.Directories = append(config.Storage.Directories, igntypes.Directory{
Node: igntypes.Node{
Path: extraManifestPath,
User: igntypes.NodeUser{
Name: &user,
},
Overwrite: util.BoolToPtr(true),
},
DirectoryEmbedded1: igntypes.DirectoryEmbedded1{
Mode: &mode,
},
})
for _, file := range extraManifests.FileList {
type unstructured map[string]interface{}
yamlList, err := manifests.GetMultipleYamls[unstructured](file.Data)
if err != nil {
return errors.Wrapf(err, "could not decode YAML for %s", file.Filename)
}
for n, manifest := range yamlList {
m, err := yaml.Marshal(manifest)
if err != nil {
return err
}
base := filepath.Base(file.Filename)
ext := filepath.Ext(file.Filename)
baseWithoutExt := strings.TrimSuffix(base, ext)
baseFileName := filepath.Join(extraManifestPath, baseWithoutExt)
fileName := fmt.Sprintf("%s-%d%s", baseFileName, n, ext)
extraFile := ignition.FileFromBytes(fileName, user, mode, m)
config.Storage.Files = append(config.Storage.Files, extraFile)
}
}
return nil
}
func getOSImagesInfo(cpuArch string) (*models.OsImage, error) {
st, err := rhcos.FetchCoreOSBuild(context.Background())
if err != nil {
return nil, err
}
osImage := &models.OsImage{
CPUArchitecture: &cpuArch,
}
openshiftVersion, err := version.Version()
if err != nil {
return nil, err
}
osImage.OpenshiftVersion = &openshiftVersion
streamArch, err := st.GetArchitecture(cpuArch)
if err != nil {
return nil, err
}
artifacts, ok := streamArch.Artifacts["metal"]
if !ok {
return nil, fmt.Errorf("failed to retrieve coreos metal info for architecture %s", cpuArch)
}
osImage.Version = &artifacts.Release
isoFormat, ok := artifacts.Formats["iso"]
if !ok {
return nil, fmt.Errorf("failed to retrieve coreos ISO info for architecture %s", cpuArch)
}
osImage.URL = &isoFormat.Disk.Location
return osImage, nil
}
// RetrieveRendezvousIP Returns the Rendezvous IP from either AgentConfig or NMStateConfig
func RetrieveRendezvousIP(agentConfig *agent.Config, nmStateConfigs []*v1beta1.NMStateConfig) (string, error) {
var err error
var rendezvousIP string
if agentConfig != nil && agentConfig.RendezvousIP != "" {
rendezvousIP = agentConfig.RendezvousIP
logrus.Debug("RendezvousIP from the AgentConfig ", rendezvousIP)
} else if len(nmStateConfigs) > 0 {
rendezvousIP, err = manifests.GetNodeZeroIP(nmStateConfigs)
logrus.Debug("RendezvousIP from the NMStateConfig ", rendezvousIP)
} else {
err = errors.New("missing rendezvousIP in agent-config or at least one NMStateConfig manifest")
return "", err
}
// Convert IPv6 address to canonical to match host format for comparisons
addr := net.ParseIP(rendezvousIP)
if addr == nil {
err = errors.New(fmt.Sprintf("invalid rendezvous IP: %s", rendezvousIP))
return "", err
}
return addr.String(), err
}
func getPublicContainerRegistries(registriesConfig *mirror.RegistriesConf) string {
if len(registriesConfig.MirrorConfig) > 0 {
registries := []string{}
for _, config := range registriesConfig.MirrorConfig {
location := strings.SplitN(config.Location, "/", 2)[0]
allRegs := fmt.Sprint(registries)
if !strings.Contains(allRegs, location) {
registries = append(registries, location)
}
}
return strings.Join(registries, ",")
}
return "quay.io"
}