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octopus
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subnet 찾는 모드 추가

This commit is contained in:
Sangbum Kim 2018-05-13 18:16:43 +09:00
parent 0fa916778d
commit 4ea1d1f52b
2 changed files with 126 additions and 40 deletions
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164
octopus-outside/main.go
View File

@ -1,7 +1,6 @@
package main
import (
"bytes"
"errors"
"fmt"
@ -14,7 +13,7 @@ import (
"io/ioutil"
kingpin "gopkg.in/alecthomas/kingpin.v2"
"gopkg.in/alecthomas/kingpin.v2"
"gopkg.in/yaml.v2"
"strconv"
@ -26,36 +25,37 @@ import (
type cmdList []string
func (i *cmdList) Set(value string) error {
*i = append(*i, value)
return nil
*i = append(*i, value)
return nil
}
func (i *cmdList) String() string {
return ""
return ""
}
func (i *cmdList) IsCumulative() bool {
return true
return true
}
func CmdList(s kingpin.Settings) (target *[]string) {
target = new([]string)
s.SetValue((*cmdList)(target))
return
target = new([]string)
s.SetValue((*cmdList)(target))
return
}
var (
app = kingpin.New("octopus-outside", "nspawn Bootstrapper.").Author("Sangbum Kim<sangbumkim@amuz.es>")
verbosePtr = app.Flag("verbose", "Enable verbose mode.").Short('v').Bool()
clearPtr = app.Flag("clear", "clear os environment.").Short('p').Bool()
ifBindTypePtr = app.Flag("if-bind-type", "choose virtual ethernet bind type(ipvlan,macvlan).").Default("ipvlan").Short('b').Enum("ipvlan","macvlan")
ifBindTypePtr = app.Flag("if-bind-type", "choose virtual ethernet bind type(ipvlan,macvlan).").Default("ipvlan").Short('b').Enum("ipvlan", "macvlan")
isFindSubnetPtr = app.Flag("subnet-scan", "find subnet mode. if not specify, use default network scan mode.").Short('t').Default("false").Bool()
macAddrPtr = app.Flag("mac-address", "Specify MAC address of macvlan mode. if not specify, use random.").Short('a').String()
nspawnPathPtr = app.Flag("nspawn-path", "systemd-nspawn location.").Short('s').String()
containerHomePtr = app.Flag("container-home", "container residence path").Default("/container").Short('d').String()
configFileNamePtr = app.Flag("config-file", "config file name").Default("settings.yml").HintOptions("FILENAME").Short('c').String()
nodeNamePtr = app.Arg("nodeName", "nodename to spawn.").Required().String()
bindIfNamePtr = app.Arg("bindInterface", "interface name to bind.").Required().String()
cmdListArgsPtr = CmdList(app.Arg("cmd","execute command rather than boot process"))
cmdListArgsPtr = CmdList(app.Arg("cmd", "execute command rather than boot process"))
)
type mountPoint struct {
@ -64,13 +64,12 @@ type mountPoint struct {
Readonly bool `yaml:"readonly"`
}
func (mp mountPoint) Option(nodePath string) (option string, err error) {
var mountPointPath string
if filepath.IsAbs(mp.Name){
mountPointPath= mp.Name
}else{
mountPointPath= filepath.Clean(filepath.Join(nodePath, "volume", mp.Name))
if filepath.IsAbs(mp.Name) {
mountPointPath = mp.Name
} else {
mountPointPath = filepath.Clean(filepath.Join(nodePath, "volume", mp.Name))
}
if _, err = os.Stat(mountPointPath); os.IsNotExist(err) {
@ -128,6 +127,84 @@ func getIP(host string) (ip net.IP, err error) {
return addrs[0], nil
}
func getCidr(network net.IPNet) (cidr uint64, err error) {
netSlice := strings.Split(network.String(), "/")
if len(netSlice) < 2 {
err = errors.New("cannot get netmask")
return
}
cidr, err = strconv.ParseUint(netSlice[len(netSlice)-1], 10, 64)
return
}
func getSubnetIPInfo(ip net.IP, verbose bool) (gw net.IP, cidr uint64, linkname string, err error) {
// netlink.RouteList
var links []netlink.Link
links, err = netlink.LinkList()
if err != nil {
return
}
if verbose {
fmt.Println("scan system network interfaces:")
}
for _, link := range links {
attrs := link.Attrs()
if verbose {
fmt.Printf(" interface %s : ", attrs.Name)
}
if (attrs.Flags & net.FlagUp) == 0 {
if verbose {
fmt.Printf(" not up -- abandon!\n")
}
continue
} else {
if verbose {
fmt.Printf(" up!\n")
}
}
if verbose {
fmt.Println(" getting routing tables ")
}
var routes []netlink.Route
routes, err = netlink.RouteList(link, netlink.FAMILY_V4)
if err != nil {
continue
}
var (
matchedRoute *netlink.Route
)
for _, route := range routes {
if verbose {
fmt.Printf(" routing table %s\n", route.String())
}
if route.Dst.Contains(ip) {
if verbose {
fmt.Printf(" - matched routing role : %s\n", route.String())
}
matchedRoute = &route
break
} else if verbose {
fmt.Printf(" - no subnet gateway\n")
}
}
if cidrData, err := getCidr(*matchedRoute.Dst); err == nil {
cidr = cidrData
if verbose {
fmt.Printf(" interface have a subnet routing rule. gateway: %s", matchedRoute)
fmt.Println(" ok! matched ")
}
gw, cidr, linkname = matchedRoute.Gw, cidrData, attrs.Name
} else if verbose {
fmt.Printf(" - cannot getting netmask : %s", err)
fmt.Println(" abandon this interface ")
}
}
return
}
func getOutboundIPInfo(verbose bool) (gw net.IP, cidr uint64, linkname string, err error) {
// netlink.RouteList
var links []netlink.Link
@ -210,14 +287,12 @@ func getOutboundIPInfo(verbose bool) (gw net.IP, cidr uint64, linkname string, e
if verbose {
fmt.Printf(" - default network\n")
}
netSlice := strings.Split(network.IPNet.String(), "/")
if len(netSlice) < 2 {
continue
}
if cidrData, err := strconv.ParseUint(netSlice[len(netSlice)-1], 10, 64); err == nil {
if cidrData, err := getCidr(*network.IPNet); err == nil {
matchedCidr = cidrData
cidrOk = true
break
} else if verbose {
fmt.Printf(" - cannot getting netmask : %s", err)
}
} else if verbose {
fmt.Printf(" - no default network\n")
@ -315,9 +390,10 @@ func main() {
var (
verbose = *verbosePtr
ifBindType = *ifBindTypePtr
macAddr = strings.TrimSpace(*macAddrPtr)
macAddr = strings.TrimSpace(*macAddrPtr)
clear = *clearPtr
nodeName = *nodeNamePtr
isFindSubnet = *isFindSubnetPtr
bindIfName = *bindIfNamePtr
configFileName = *configFileNamePtr
cmdListArgs = *cmdListArgsPtr
@ -389,9 +465,19 @@ func main() {
}
progress++
gw, cidr, linkname, err := getOutboundIPInfo(verbose)
var (
gw net.IP
cidr uint64
linkname string
)
if isFindSubnet {
gw, cidr, linkname, err = getSubnetIPInfo(nodeAddr, verbose)
} else {
gw, cidr, linkname, err = getOutboundIPInfo(verbose)
}
if err != nil {
panic(errs.Wrap(err, "error in getOutboundIPInfo"))
panic(errs.Wrap(err, "error in network info"))
}
if verbose {
@ -399,22 +485,22 @@ func main() {
fmt.Printf(" - bind interface{%s} : valid\n", bindIfName)
fmt.Printf(" - default routing info : ip %s/%d link %s\n", gw.String(), cidr, linkname)
fmt.Printf(" - node{%s} IP address : %s\n", nodeName, nodeAddr.String())
fmt.Printf(" - bind interface type : %s\n",ifBindType)
fmt.Printf(" - bind interface type : %s\n", ifBindType)
}
option := []string{
"--quiet",
"--link-journal=try-host",
"--notify-ready=true"}
switch ifBindType {
case "macvlan":
option = append(option, fmt.Sprintf("--network-macvlan=%s", bindIfName))
if len(macAddr)>0{
option = append(option, fmt.Sprintf("--setenv=MAC_ADDR=%s", macAddr))
}
case "ipvlan":
option = append(option, fmt.Sprintf("--network-ipvlan=%s", bindIfName))
default:
panic(errors.New("unknown bind type"))
case "macvlan":
option = append(option, fmt.Sprintf("--network-macvlan=%s", bindIfName))
if len(macAddr) > 0 {
option = append(option, fmt.Sprintf("--setenv=MAC_ADDR=%s", macAddr))
}
case "ipvlan":
option = append(option, fmt.Sprintf("--network-ipvlan=%s", bindIfName))
default:
panic(errors.New("unknown bind type"))
}
option = append(option, fmt.Sprintf("--setenv=IF_TYPE=%s", ifBindType))
@ -422,7 +508,8 @@ func main() {
option = append(option, fmt.Sprintf("--setenv=GATEWAY_ADDR=%s", gw.String()))
option = append(option, fmt.Sprintf("--machine=%s", nodeName))
option = append(option, fmt.Sprintf("--directory=%s", filepath.Join(nodePath, "merge")))
option = append(option, "--keep-unit", "--register=no", "--settings=override")
# option = append(option, "--keep-unit", "--register=yes", "--settings=override", "--private-users=1354956800:65536", "--private-users-chown")
option = append(option, "--keep-unit", "--register=yes", "--settings=override")
for _, mountPoint := range config.MoundPoint {
if mountOption, err := mountPoint.Option(nodePath); err != nil {
@ -436,12 +523,12 @@ func main() {
fmt.Println("startup type: using systemd")
}
option = append(option, "--boot")
}else {
} else {
if verbose {
fmt.Println("startup type: using command")
}
for _, cmdArg := range cmdListArgs {
option = append(option, fmt.Sprintf(" %s",cmdArg))
option = append(option, fmt.Sprintf(" %s", cmdArg))
}
}
var env []string
@ -463,10 +550,9 @@ func main() {
fmt.Println(" ", segment, " \\")
}
fmt.Println(" ;")
fmt.Println("bye!")
fmt.Println("bye!")
}
if err := syscall.Exec(nspawnPath, option, env); err != nil {
panic(errs.Wrap(err, "error in systemd-nspawn execution"))
}
}

2
services/octopus-outside@.service
View File

@ -16,7 +16,7 @@ After=pdnsd.service
[Service]
ExecStartPre=/usr/bin/sleep 3s
ExecStart=/container/octopus-outside %I igb0 -v -b macvlan
ExecStart=/container/octopus-outside %I igb1 -v -b ipvlan -s
KillMode=mixed
Type=notify
RestartForceExitStatus=133