348 lines
10 KiB
Go
348 lines
10 KiB
Go
package overlay
|
|
|
|
import (
|
|
"fmt"
|
|
"io/ioutil"
|
|
"net"
|
|
"os"
|
|
"os/exec"
|
|
"path"
|
|
"path/filepath"
|
|
"strconv"
|
|
"strings"
|
|
"text/template"
|
|
|
|
"github.com/hpcng/warewulf/internal/pkg/node"
|
|
"github.com/hpcng/warewulf/internal/pkg/util"
|
|
"github.com/hpcng/warewulf/internal/pkg/warewulfconf"
|
|
"github.com/hpcng/warewulf/internal/pkg/wwlog"
|
|
"github.com/pkg/errors"
|
|
)
|
|
|
|
type TemplateStruct struct {
|
|
Id string
|
|
Hostname string
|
|
ClusterName string
|
|
Container string
|
|
KernelVersion string
|
|
KernelArgs string
|
|
Init string
|
|
Root string
|
|
IpmiIpaddr string
|
|
IpmiNetmask string
|
|
IpmiPort string
|
|
IpmiGateway string
|
|
IpmiUserName string
|
|
IpmiPassword string
|
|
IpmiInterface string
|
|
RuntimeOverlay string
|
|
SystemOverlay string
|
|
NetDevs map[string]*node.NetDevs
|
|
Tags map[string]string
|
|
Keys map[string]string
|
|
AllNodes []node.NodeInfo
|
|
NFSMounts []string
|
|
}
|
|
|
|
/*
|
|
|
|
func BuildSystemOverlay(nodeList []node.NodeInfo) error {
|
|
return nil
|
|
}
|
|
|
|
func BuildRuntimeOverlay(nodeList []node.NodeInfo) error {
|
|
return nil
|
|
}
|
|
|
|
|
|
func FindSystemOverlays() ([]string, error) {
|
|
return findAllOverlays("system")
|
|
}
|
|
|
|
func FindRuntimeOverlays() ([]string, error) {
|
|
return findAllOverlays("runtime")
|
|
}
|
|
*/
|
|
|
|
func BuildAllOverlays(nodes []node.NodeInfo) error {
|
|
for _, n := range nodes {
|
|
var overlays []string
|
|
|
|
overlays = append(overlays, n.SystemOverlay.Get())
|
|
overlays = append(overlays, n.RuntimeOverlay.Get())
|
|
|
|
wwlog.Printf(wwlog.INFO, "Building overlays for %s: [%s]\n", n.Id.Get(), strings.Join(overlays, ", "))
|
|
|
|
for _, overlay := range overlays {
|
|
err := BuildOverlay(n, overlay)
|
|
if err != nil {
|
|
return errors.Wrap(err, "could not build overlay "+n.Id.Get()+"/"+overlay+".img")
|
|
}
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// TODO: Add an Overlay Delete for both sourcedir and image
|
|
|
|
func BuildSpecificOverlays(nodes []node.NodeInfo, overlayName string) error {
|
|
for _, n := range nodes {
|
|
|
|
wwlog.Printf(wwlog.INFO, "Building overlay for %s: %s\n", n.Id.Get(), overlayName)
|
|
err := BuildOverlay(n, overlayName)
|
|
if err != nil {
|
|
return errors.Wrap(err, "could not build overlay "+n.Id.Get()+"/"+overlayName+".img")
|
|
}
|
|
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func FindOverlays() ([]string, error) {
|
|
var ret []string
|
|
var files []os.FileInfo
|
|
|
|
files, err := ioutil.ReadDir(OverlaySourceTopDir())
|
|
if err != nil {
|
|
return ret, errors.Wrap(err, "could not get list of overlays")
|
|
}
|
|
|
|
for _, file := range files {
|
|
wwlog.Printf(wwlog.DEBUG, "Evaluating overlay source: %s\n", file.Name())
|
|
if file.IsDir() {
|
|
ret = append(ret, file.Name())
|
|
}
|
|
}
|
|
|
|
return ret, nil
|
|
}
|
|
|
|
func OverlayInit(overlayName string) error {
|
|
path := OverlaySourceDir(overlayName)
|
|
|
|
if util.IsDir(path) {
|
|
return errors.New("Overlay already exists: " + overlayName)
|
|
}
|
|
|
|
err := os.MkdirAll(path, 0755)
|
|
|
|
return err
|
|
}
|
|
|
|
func BuildOverlay(nodeInfo node.NodeInfo, overlayName string) error {
|
|
controller, err := warewulfconf.New()
|
|
if err != nil {
|
|
wwlog.Printf(wwlog.ERROR, "%s\n", err)
|
|
os.Exit(1)
|
|
}
|
|
|
|
nodeDB, _ := node.New()
|
|
allNodes, _ := nodeDB.FindAllNodes()
|
|
var tstruct TemplateStruct
|
|
OverlaySourceDir := OverlaySourceDir(overlayName)
|
|
OverlayImage := OverlayImage(nodeInfo.Id.Get(), overlayName)
|
|
OverlayImageDir := path.Dir(OverlayImage)
|
|
|
|
if !util.ValidString(overlayName, "^[a-zA-Z0-9-._:]+$") {
|
|
return errors.New("overlay name contains illegal characters: " + overlayName)
|
|
}
|
|
|
|
wwlog.Printf(wwlog.DEBUG, "Checking to see if overlay directory exists: %s\n", OverlaySourceDir)
|
|
if !util.IsDir(OverlaySourceDir) {
|
|
return errors.New("overlay does not exist: " + overlayName)
|
|
}
|
|
|
|
err = os.MkdirAll(OverlayImageDir, 0755)
|
|
if err == nil {
|
|
wwlog.Printf(wwlog.DEBUG, "Created parent directory for Overlay Images: %s\n", OverlayImageDir)
|
|
} else {
|
|
return errors.Wrap(err, "could not create overlay image directory")
|
|
}
|
|
|
|
tmpDir, err := ioutil.TempDir(os.TempDir(), ".wwctl-overlay-")
|
|
if err == nil {
|
|
wwlog.Printf(wwlog.DEBUG, "Creating temporary directory for overlay files: %s\n", tmpDir)
|
|
} else {
|
|
return errors.Wrap(err, "could not create overlay temporary directory")
|
|
}
|
|
|
|
wwlog.Printf(wwlog.VERBOSE, "Processing node/overlay: %s/%s\n", nodeInfo.Id.Get(), overlayName)
|
|
|
|
tstruct.Id = nodeInfo.Id.Get()
|
|
tstruct.Hostname = nodeInfo.Id.Get()
|
|
tstruct.Id = nodeInfo.Id.Get()
|
|
tstruct.Hostname = nodeInfo.Id.Get()
|
|
tstruct.ClusterName = nodeInfo.ClusterName.Get()
|
|
tstruct.Container = nodeInfo.ContainerName.Get()
|
|
tstruct.KernelVersion = nodeInfo.KernelVersion.Get()
|
|
tstruct.KernelArgs = nodeInfo.KernelArgs.Get()
|
|
tstruct.Init = nodeInfo.Init.Get()
|
|
tstruct.Root = nodeInfo.Root.Get()
|
|
tstruct.IpmiIpaddr = nodeInfo.IpmiIpaddr.Get()
|
|
tstruct.IpmiNetmask = nodeInfo.IpmiNetmask.Get()
|
|
tstruct.IpmiPort = nodeInfo.IpmiPort.Get()
|
|
tstruct.IpmiGateway = nodeInfo.IpmiGateway.Get()
|
|
tstruct.IpmiUserName = nodeInfo.IpmiUserName.Get()
|
|
tstruct.IpmiPassword = nodeInfo.IpmiPassword.Get()
|
|
tstruct.IpmiInterface = nodeInfo.IpmiInterface.Get()
|
|
tstruct.RuntimeOverlay = nodeInfo.RuntimeOverlay.Get()
|
|
tstruct.SystemOverlay = nodeInfo.SystemOverlay.Get()
|
|
tstruct.NetDevs = make(map[string]*node.NetDevs)
|
|
tstruct.Keys = make(map[string]string)
|
|
tstruct.Tags = make(map[string]string)
|
|
for devname, netdev := range nodeInfo.NetDevs {
|
|
var nd node.NetDevs
|
|
tstruct.NetDevs[devname] = &nd
|
|
tstruct.NetDevs[devname].Device = netdev.Device.Get()
|
|
tstruct.NetDevs[devname].Hwaddr = netdev.Hwaddr.Get()
|
|
tstruct.NetDevs[devname].Ipaddr = netdev.Ipaddr.Get()
|
|
tstruct.NetDevs[devname].Netmask = netdev.Netmask.Get()
|
|
tstruct.NetDevs[devname].Gateway = netdev.Gateway.Get()
|
|
tstruct.NetDevs[devname].Type = netdev.Type.Get()
|
|
tstruct.NetDevs[devname].OnBoot = netdev.OnBoot.Get()
|
|
tstruct.NetDevs[devname].Default = netdev.Default.Get()
|
|
|
|
mask := net.IPMask(net.ParseIP(netdev.Netmask.Get()).To4())
|
|
ipaddr := net.ParseIP(netdev.Ipaddr.Get()).To4()
|
|
netaddr := net.IPNet{IP: ipaddr, Mask: mask}
|
|
netPrefix, _ := net.IPMask(net.ParseIP(netdev.Netmask.Get()).To4()).Size()
|
|
tstruct.NetDevs[devname].Prefix = strconv.Itoa(netPrefix)
|
|
tstruct.NetDevs[devname].IpCIDR = netaddr.String()
|
|
|
|
}
|
|
// Backwards compatibility for templates using "Keys"
|
|
for keyname, key := range nodeInfo.Tags {
|
|
tstruct.Keys[keyname] = key.Get()
|
|
}
|
|
for keyname, key := range nodeInfo.Tags {
|
|
tstruct.Tags[keyname] = key.Get()
|
|
}
|
|
tstruct.AllNodes = allNodes
|
|
for _, export := range controller.Nfs.ExportsExtended {
|
|
if export.Mount {
|
|
var mountOpts string
|
|
if export.MountOptions == "" {
|
|
mountOpts = "defaults"
|
|
} else {
|
|
mountOpts = export.MountOptions
|
|
}
|
|
tstruct.NFSMounts = append(tstruct.NFSMounts, fmt.Sprintf("%s:%s %s nfs %s 0 0\n", controller.Ipaddr, export.Path, export.Path, mountOpts))
|
|
}
|
|
}
|
|
|
|
wwlog.Printf(wwlog.DEBUG, "Changing directory to OverlayDir: %s\n", OverlaySourceDir)
|
|
err = os.Chdir(OverlaySourceDir)
|
|
if err != nil {
|
|
return errors.Wrap(err, "could not change directory to overlay dir")
|
|
}
|
|
|
|
wwlog.Printf(wwlog.VERBOSE, "Walking the overlay structure: %s\n", OverlaySourceDir)
|
|
err = filepath.Walk(".", func(location string, info os.FileInfo, err error) error {
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
wwlog.Printf(wwlog.DEBUG, "Found overlay file: %s\n", location)
|
|
|
|
if info.IsDir() {
|
|
wwlog.Printf(wwlog.DEBUG, "Found directory: %s\n", location)
|
|
|
|
err = os.MkdirAll(path.Join(tmpDir, location), info.Mode())
|
|
if err != nil {
|
|
return errors.Wrap(err, "could not create directory within overlay")
|
|
}
|
|
err = util.CopyUIDGID(location, path.Join(tmpDir, location))
|
|
if err != nil {
|
|
return errors.Wrap(err, "failed setting permissions on overlay directory")
|
|
}
|
|
|
|
wwlog.Printf(wwlog.DEBUG, "Created directory in overlay: %s\n", location)
|
|
|
|
} else if filepath.Ext(location) == ".ww" {
|
|
wwlog.Printf(wwlog.VERBOSE, "Evaluating overlay template file: %s\n", location)
|
|
|
|
destFile := strings.TrimSuffix(location, ".ww")
|
|
|
|
tmpl, err := template.New(path.Base(location)).Option("missingkey=default").Funcs(template.FuncMap{
|
|
// TODO: Fix for missingkey=zero
|
|
"Include": templateFileInclude,
|
|
"IncludeFrom": templateContainerFileInclude,
|
|
"inc": func(i int) int { return i + 1 },
|
|
"dec": func(i int) int { return i - 1 },
|
|
// }).ParseGlob(path.Join(OverlayDir, destFile+".ww*"))
|
|
}).ParseGlob(location)
|
|
if err != nil {
|
|
return errors.Wrap(err, "could not parse template "+location)
|
|
}
|
|
|
|
w, err := os.OpenFile(path.Join(tmpDir, destFile), os.O_RDWR|os.O_CREATE, info.Mode())
|
|
if err != nil {
|
|
return errors.Wrap(err, "could not open new file for template")
|
|
}
|
|
defer w.Close()
|
|
|
|
err = tmpl.Execute(w, tstruct)
|
|
if err != nil {
|
|
return errors.Wrap(err, "could not execute template")
|
|
}
|
|
|
|
err = util.CopyUIDGID(location, path.Join(tmpDir, destFile))
|
|
if err != nil {
|
|
return errors.Wrap(err, "failed setting permissions on template output file")
|
|
}
|
|
|
|
wwlog.Printf(wwlog.DEBUG, "Wrote template file into overlay: %s\n", destFile)
|
|
|
|
// } else if b, _ := regexp.MatchString(`\.ww[a-zA-Z0-9\-\._]*$`, location); b {
|
|
// wwlog.Printf(wwlog.DEBUG, "Ignoring WW template file: %s\n", location)
|
|
} else if info.Mode()&os.ModeSymlink == os.ModeSymlink {
|
|
wwlog.Printf(wwlog.DEBUG, "Found symlink %s\n", location)
|
|
destination, err := os.Readlink(location)
|
|
if err != nil {
|
|
wwlog.Printf(wwlog.ERROR, "%s\n", err)
|
|
}
|
|
err = os.Symlink(destination, path.Join(tmpDir, location))
|
|
if err != nil {
|
|
wwlog.Printf(wwlog.ERROR, "%s\n", err)
|
|
}
|
|
} else {
|
|
|
|
err := util.CopyFile(location, path.Join(tmpDir, location))
|
|
if err == nil {
|
|
wwlog.Printf(wwlog.DEBUG, "Copied file into overlay: %s\n", location)
|
|
} else {
|
|
return errors.Wrap(err, "could not copy file into overlay")
|
|
}
|
|
}
|
|
|
|
return nil
|
|
})
|
|
if err != nil {
|
|
return errors.Wrap(err, "failed to build overlay working directory")
|
|
}
|
|
|
|
wwlog.Printf(wwlog.DEBUG, "Finished generating overlay working directory for: %s/%s\n", nodeInfo.Id.Get(), overlayName)
|
|
|
|
compressor, err := exec.LookPath("pigz")
|
|
if err != nil {
|
|
wwlog.Printf(wwlog.DEBUG, "Could not locate PIGZ, using GZIP\n")
|
|
compressor = "gzip"
|
|
} else {
|
|
wwlog.Printf(wwlog.DEBUG, "Using PIGZ to compress the overlay: %s\n", compressor)
|
|
}
|
|
|
|
cmd := fmt.Sprintf("cd \"%s\"; find . | cpio --quiet -o -H newc | %s -c > \"%s\"", tmpDir, compressor, OverlayImage)
|
|
|
|
wwlog.Printf(wwlog.DEBUG, "RUNNING: %s\n", cmd)
|
|
err = exec.Command("/bin/sh", "-c", cmd).Run()
|
|
if err != nil {
|
|
return errors.Wrap(err, "could not generate compressed runtime image overlay")
|
|
}
|
|
wwlog.Printf(wwlog.VERBOSE, "Completed building overlay image: %s\n", OverlayImage)
|
|
|
|
wwlog.Printf(wwlog.DEBUG, "Removing temporary directory: %s\n", tmpDir)
|
|
os.RemoveAll(tmpDir)
|
|
|
|
return nil
|
|
}
|