Posts made by xutianhong

xutianhong

@george1421 im very sorry to make you confused with word “cobbler”, yes, it is an opensource project

if akin to FOG. later, i will try FOG to compare it.

but now, i think my problem is how use dhcp + dnsmasq.proxy mode + ipxe install rhel67(old kernel without efi_stub) with uefi client make it general.

or how gurb2 auto looking for grub.cfg @ ipxe environment.

i was confused that, why grub can’t use anyother args like — grubx64.efi --net_bootp --net_default_server=xxxx --configfile=xxxxx/grub.cfg, or like ipxe support ${mac(ip):hexraw} to make grub.cfg be general. that’s will be perfect to support network install.

how FOG do if someone need install rhel67 with general cfg @ dnsmasq.proxy mode & uefi client(for now all hp gen9 server use efi.)

thank you.

xutianhong

@george1421 http://${next-server}/cblr/svc/op/gpxe/system/${mac:hexraw} like blow
http://192.168.136.201/cblr/svc/op/gpxe/system/000C2996FC90

#!ipxe
initrd --name initramfs http://192.168.136.201/cobbler/ks_mirror/rhel73/images/pxeboot/uefiinitrd.img
kernel http://192.168.136.201/cobbler/ks_mirror/rhel73/images/pxeboot/uefivmlinuz initrd=initramfs  ksdevice=bootif lang=  text net.ifnames=0 biosdevname=0 kssendmac  ks=http://192.168.136.201/cblr/svc/op/ks/system/000C2996FC90
boot

it’s gen by cobbler.

xutianhong

@george1421 in rhel73 @ ipxe, i setting like this.

#!ipxe

:retry_dhcp
dhcp && echo DHCP Succeeded || goto retry_dhcp

:retry_fetch
imgfree

imgfetch http://${next-server}/cblr/svc/op/gpxe/system/${mac:hexraw} && echo Get InstallScript Succeeded && goto start_install || goto fail_sleep

:fail_sleep
echo Fetch/Install failed, sleep 30s && sleep 30 && goto retry_dhcp

:start_install
echo Booting from ${mac:hexraw}
chain ${mac:hexraw} || goto fail_sleep

make bin-x86_64-efi/ipxe.efi EMBED=uefi.ipx

xutianhong

@george1421 is i describe clearly what i need? sorry…

xutianhong

hi @george1421 , see u again.
in my env, i want to use cobbler install rhel67&rhel73 with different mac use diff ksfile.
it’s will be like blow
client get ip with dhcp server & get tftp info with dnsmasq server.
client to tftp server get bootinfo & files.
in legacy bios, it’s works all fine. but uefi.
the first is rhel73.
i solved it cuz rhel73 kernel have bug, change the kernel to centos7.1611 kernel 3.10.514.2.2.
the second is rhel67.
it’s not efi_stub.
i try to use ipxe {kernel tftpserver/vmlinuz, initrd tftpserver/initrd.img, boot} it’s not work.
then, i try ipxe{chain grubx64.efi} it’s give me grub shell, in grub shell { net_bootp, linux tftpserver/vmlinuz, initrd tftpserver/initrd.img, boot} it’s worked.
or i use grub2-mkstandalone balabalbal burn grub.cfg to grubx64.efi, it’s worked too.
but i can’t use these two ways cuz grub shell can’t like ipxe can use script & ${mac:hexraw}, and i can’t make standalone grub.efi with every one client.

so i hear rEFInd like grub. i tried…

is FOG can do this like cobbler?

xutianhong

Server

FOG Version: none
OS: none

Client

Service Version:none
OS:none

Description

hi, @Tom-Elliott, after that discussion, i was tring to refind. and i can’t find any way to use refind loading network file. i read the refind doc, it’s support ipxe, but it’s looks like loading refind -> jump to ipxe.efi, not any different between dhcp->ipxe.
and when i try to use refind.conf setting to load manual conf, it’s not support loading network file, like “loader tftp://192.168.136.201/images/rhel64-x86_64/vmlinuz”, but grub support network and tftp, is refind have some setting?

thank you.

xutianhong

@Tom-Elliott google translate was good. if have any problem, can i ask here again?

xutianhong

@Tom-Elliott @george1421 thank you, im came up upon the post from a google search about dnsmasq&pxe boot question.
this is not wok. screen show uefi setting menu. not grub> yet.

pxe-service=BC_EFI,"BC_EFI",grub/grub-x86_64.efi --config-file=grub/efidefault,192.168.136.226

this website advice used in my first post. but static network setting not useful.
https://github.com/openSUSE/kiwi/wiki/Setup-PXE-boot-with-EFI-Using-GRUB2

thank you @george1421 i tried ipxe, found it’s very powerful. i was working on it to try combine with cobbler.
but it’s looks like redhat 7.3 have a kernel bug for ipxe uefi boot. http://forum.ipxe.org/showthread.php?tid=8243&pid=13314#pid13314
finally solved.

i come from China.:bow_tone2: u know chinese?
thank you for ur help. both.~ 谢谢

xutianhong

@george1421 im not using FOG. only question about pxe booting. use this cuz cobbler default env. im not add/del extra file to it. if default can work. i dont want change any thing.

xutianhong

@Tom-Elliott there no grub.cfg, only cobbler gen efidefault. ofcuz i copy efidefault to /grub.cfg & /boot/grub/grub.cfg, not work, same grub> msg.

default=0
timeout=0

title centos6.0-x86_64
    root (nd)
    kernel /images/centos6.0-x86_64/vmlinuz  ksdevice=bootif lang=  kssendmac text  ks=http://192.168.136.226/cblr/svc/op/ks/profile/centos6.0-x86_64
    initrd /images/centos6.0-x86_64/initrd.img

title centos7.2-x86_64
    root (nd)
    kernel /images/centos7.2-x86_64/vmlinuz  ksdevice=bootif lang=  kssendmac text  ks=http://192.168.136.226/cblr/svc/op/ks/profile/centos7.2-x86_64
    initrd /images/centos7.2-x86_64/initrd.img

title rhel72-x86_64
    root (nd)
    kernel /images/rhel72-x86_64/vmlinuz  ksdevice=bootif lang=  kssendmac text  ks=http://192.168.136.226/cblr/svc/op/ks/profile/rhel72-x86_64
    initrd /images/rhel72-x86_64/initrd.img

title rhel73-x86_64
    root (nd)
    kernel /images/rhel73-x86_64/vmlinuz  ksdevice=bootif lang=  kssendmac text  ks=http://192.168.136.226/cblr/svc/op/ks/profile/rhel73-x86_64
    initrd /images/rhel73-x86_64/initrd.img```

xutianhong

@george1421 im not sure what happened. it’s looks like grub cant get cfg file?
it’s my boot process.
dhcp start @ 200
tftp & dnsmasq.proxymode start @ 226 only use pxe+grub not ipxe&refind
uefi client @ dhcp
the tftproot tree blow this

[root@cobbler tftpboot]# tree
.
|-- boot
|   `-- grub
|       `-- menu.lst
|-- etc
|-- grub
|   |-- 01-00-50-56-2D-85-AB
|   |-- 01-00-50-56-36-01-FD
|   |-- C0A888FC
|   |-- efidefault
|   |-- grub-x86_64.efi
|   |-- grub-x86.efi
|   `-- images -> ../images
|-- images
|   |-- centos6.0-x86_64
|   |   |-- initrd.img
|   |   `-- vmlinuz
|   |-- centos7.2-x86_64
|   |   |-- initrd.img
|   |   `-- vmlinuz
|   |-- rhel72-x86_64
|   |   |-- initrd.img
|   |   `-- vmlinuz
|   `-- rhel73-x86_64
|       |-- initrd.img
|       `-- vmlinuz
|-- images2
|-- memdisk
|-- menu.c32
|-- ppc
|-- pxelinux.0
|-- pxelinux.cfg
|   |-- 01-00-50-56-2d-85-ab
|   |-- 01-00-50-56-36-01-fd
|   |-- C0A888FC
|   `-- default
|-- s390x
|   `-- profile_list
|-- uefi
`-- yaboot

the dnsmasq conf blow this

# Don't function as a DNS server:
port=0

# Log lots of extra information about DHCP transactions.
log-dhcp

# Set the root directory for files available via FTP.
tftp-root=/var/lib/tftpboot

# Disable re-use of the DHCP servername and filename fields as extra
# option space. That's to avoid confusing some old or broken DHCP clients.
dhcp-no-override

# The boot filename, Server name, Server Ip Address
dhcp-boot=pxelinux.0,,192.168.136.226

# PXE menu.  The first part is the text displayed to the user.  The second is the timeout, in seconds.
pxe-prompt="Booting UAT Autoinstall Client", 1
#legacy bios options
#pxe-service=X86PC,"Legacy",undionly.kpxe,192.168.136.226
#vmware workstation 12 EFI options
pxe-service=BC_EFI,"BC_EFI",grub/grub-x86_64.efi,192.168.136.226

dhcp-range=192.168.136.200,proxy

when uefi client power up, it’s show grub>

here is dhcp/tftp/dnsmasq log

May 23 05:56:08 localhost dhcpd[844]: DHCPDISCOVER from 00:0c:29:87:09:d5 via ens33
May 23 05:56:09 localhost dhcpd[844]: DHCPOFFER on 192.168.136.250 to 00:0c:29:87:09:d5 via ens33
May 23 05:56:11 localhost dhcpd[844]: DHCPREQUEST for 192.168.136.250 (192.168.136.200) from 00:0c:29:87:09:d5 via ens33
May 23 05:56:11 localhost dhcpd[844]: DHCPACK on 192.168.136.250 to 00:0c:29:87:09:d5 via ens33

5月 23 05:56:12 cobbler xinetd[981]: START: tftp pid=38640 from=192.168.136.250
5月 23 05:56:12 cobbler in.tftpd[38641]: RRQ from 192.168.136.250 filename grub/grub-x86_64.efi
5月 23 05:56:12 cobbler in.tftpd[38642]: RRQ from 192.168.136.250 filename grub/grub-x86_64.efi

5月 23 05:56:08 cobbler dnsmasq-dhcp[38636]: 2915677108 available DHCP subnet: 192.168.136.200/255.255.255.0
5月 23 05:56:08 cobbler dnsmasq-dhcp[38636]: 2915677108 vendor class: PXEClient:Arch:00009:UNDI:003016
5月 23 05:56:08 cobbler dnsmasq-dhcp[38636]: 2915677108 PXE(ens33) 00:0c:29:87:09:d5 proxy
5月 23 05:56:08 cobbler dnsmasq-dhcp[38636]: 2915677108 tags: UEFI64, ens33
5月 23 05:56:08 cobbler dnsmasq-dhcp[38636]: 2915677108 next server: 192.168.136.226
5月 23 05:56:08 cobbler dnsmasq-dhcp[38636]: 2915677108 broadcast response
5月 23 05:56:08 cobbler dnsmasq-dhcp[38636]: 2915677108 sent size:  1 option: 53 message-type  2
5月 23 05:56:08 cobbler dnsmasq-dhcp[38636]: 2915677108 sent size:  4 option: 54 server-identifier  192.168.136.226
5月 23 05:56:08 cobbler dnsmasq-dhcp[38636]: 2915677108 sent size:  9 option: 60 vendor-class  50:58:45:43:6c:69:65:6e:74
5月 23 05:56:08 cobbler dnsmasq-dhcp[38636]: 2915677108 sent size: 17 option: 97 client-machine-id  00:56:4d:15:7a:51:36:e6:8f:fd:fe:4d:c4:27...
5月 23 05:56:11 cobbler dnsmasq-dhcp[38636]: 2915677108 available DHCP subnet: 192.168.136.200/255.255.255.0
5月 23 05:56:11 cobbler dnsmasq-dhcp[38636]: 2915677108 vendor class: PXEClient:Arch:00009:UNDI:003016
5月 23 05:56:11 cobbler dnsmasq-dhcp[38636]: 3034770792 available DHCP subnet: 192.168.136.200/255.255.255.0
5月 23 05:56:11 cobbler dnsmasq-dhcp[38636]: 3034770792 vendor class: PXEClient:Arch:00009:UNDI:003016
5月 23 05:56:11 cobbler dnsmasq-dhcp[38636]: 3034770792 PXE(ens33) 00:0c:29:87:09:d5 proxy
5月 23 05:56:11 cobbler dnsmasq-dhcp[38636]: 3034770792 tags: UEFI64, ens33
5月 23 05:56:11 cobbler dnsmasq-dhcp[38636]: 3034770792 bootfile name: grub/grub-x86_64.efi
5月 23 05:56:11 cobbler dnsmasq-dhcp[38636]: 3034770792 server name: 192.168.136.226
5月 23 05:56:11 cobbler dnsmasq-dhcp[38636]: 3034770792 next server: 192.168.136.226
5月 23 05:56:11 cobbler dnsmasq-dhcp[38636]: 3034770792 sent size:  1 option: 53 message-type  5
5月 23 05:56:11 cobbler dnsmasq-dhcp[38636]: 3034770792 sent size:  4 option: 54 server-identifier  192.168.136.226
5月 23 05:56:11 cobbler dnsmasq-dhcp[38636]: 3034770792 sent size:  9 option: 60 vendor-class  50:58:45:43:6c:69:65:6e:74
5月 23 05:56:11 cobbler dnsmasq-dhcp[38636]: 3034770792 sent size: 17 option: 97 client-machine-id  00:56:4d:15:7a:51:36:e6:8f:fd:fe:4d:c4:27...

xutianhong

@george1421 im sorry make u confuse, cuz my english was not good. maybe can’t describe clearly.

xutianhong

@george1421 ok. i was using cobbler install redhat @ my work env. at first i found all works fine @ legacy bios. but when shift to UEFI. its’ not work good anymore. cobbler+dnsmasq.proxymode, msg freeze at option 47. i search google and found fog.wiki have advice dnsmasq need upgrade to 2.76. i do it. at this time , screen show grub>. then i search @ dnsmasq mail list and other website. find some way to figure this write in my first post. but it’s need write static ip&nextserver info to cfg, make standalone efi file. then Tom Elliott suggest ipxe & rEFInd.

xutianhong

@Tom-Elliott thank you for ur advice, i found some figure way @ipxe site. now im search way to kindly combine ipxe with cobbler. the uefi ipxe boot install cost me lots of time cuz rhel73 have kernel bug. finally figure out too.

xutianhong

@Tom-Elliott very thank you. im try to test rEFInd to make sure is it suit for my env. i will reply later.

xutianhong

@Tom-Elliott hi, i just google what is rEFInd. dose rEFInd support BIOS/EFI pxeboot?

xutianhong

hi, when saw dnsmasq maillist http://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2017q2/011379.html

3q for https://github.com/openSUSE/kiwi/wiki/Setup-PXE-boot-with-EFI-using-grub2 & https://www.ibm.com/developerworks/community/blogs/a2674a1d-a968-4f17-998f-b8b38497c9f7/entry/uefi-grub2?lang=ru

the problem may not in dnsmasq, when update to version 2.76. uefi boot can see grub>

My env is all in VMware Workstation 12 Pro 12.0.0 build-2985596
NAT mode
192.168.136.200 to dhcp server centos7.3
192.168.136.226 to cobbler( tftpserver & dnsmasq ) centos7.3
dhcp to cobblerctos73(legacy bios)
dhcp to uefi(efi)

136.200 install dhcpd
conf file like blow

dns-update-style interim;

subnet 192.168.136.0 netmask 255.255.255.0 {
     option routers             192.168.136.2;
     option domain-name-servers 192.168.136.2;
     option subnet-mask         255.255.255.0;
     range dynamic-bootp        192.168.136.240 192.168.136.250;
     default-lease-time         21600;
     max-lease-time             43200;
}

136.226 install centosbase dnsmasq then upgrade to 2.76 from souce, see
https://wiki.fogproject.org/wiki/index.php?title=ProxyDHCP_with_dnsmasq#Compiling dnsmasq 2.76 if you need uefi support

#define HAVE_DBUS
#define HAVE_IDN
/*#define HAVE_IDN_STATIC*/??? this line not need? cuz my centos73 not support this when do make
#define HAVE_CONNTRACK
#define HAVE_DNSSEC

then dnsmasq conf file like blow

# Don't function as a DNS server:
port=0

# Log lots of extra information about DHCP transactions.
log-dhcp

# Set the root directory for files available via FTP.
tftp-root=/var/lib/tftpboot

# Disable re-use of the DHCP servername and filename fields as extra
# option space. That's to avoid confusing some old or broken DHCP clients.
dhcp-no-override

# inspect the vendor class string and match the text to set the tag
dhcp-vendorclass=BIOS,PXEClient:Arch:00000
dhcp-vendorclass=UEFI32,PXEClient:Arch:00006
dhcp-vendorclass=UEFI,PXEClient:Arch:00007
dhcp-vendorclass=UEFI64,PXEClient:Arch:00009

# Set the boot file name based on the matching tag from the vendor class (above)
#dhcp-boot=net:BIOS,pxelinux.0,,192.168.136.226
#dhcp-boot=net:UEFI32,grub/grub-x86.efi,,192.168.136.226
#dhcp-boot=net:UEFI,BOOTX64.efi,,192.168.136.226
#dhcp-boot=net:UEFI64,grub/grub-x86_64.efi,,192.168.136.226

# The boot filename, Server name, Server Ip Address
dhcp-boot=pxelinux.0,,192.168.136.226

# PXE menu.  The first part is the text displayed to the user.  The second is the timeout, in seconds.
pxe-prompt="Booting UAT Autoinstall Client", 1

dhcp-range=192.168.136.200,proxy


#legacy bios options
pxe-service=X86PC,"Legacy",pxelinux,192.168.136.226

#vmware workstation 12 EFI options
pxe-service=BC_EFI,"BC_EFI",bootx64.efi,192.168.136.226

I find many other doc, all can’t work, till this two, see
https://github.com/openSUSE/kiwi/wiki/Setup-PXE-boot-with-EFI-using-grub2
https://www.ibm.com/developerworks/community/blogs/a2674a1d-a968-4f17-998f-b8b38497c9f7/entry/uefi-grub2?lang=ru

it’s use pxe to boot diskless linux, when finish 1&2, I can see grub>. So ….

Tftproot is /var/lib/tftpboot

Mkdir tftproot/boot/grub(in cobbler it already have)
Vim tftproot/boot/grub/grub.cfg blow this

set timeout=5
menuentry 'Linux diskless' --class os {
     insmod net
     insmod efinet
     insmod tftp
     insmod gzio
     insmod part_gpt
     insmod efi_gop
     insmod efi_uga
     # dhcp, tftp server in my network
     set net_default_server=192.168.136.226
     # auto dhcp setup did not work for me, no idea why
     # net_bootp
     # ok let's assign a static address for now
     net_add_addr eno0 efinet0 192.168.136.246
     echo 'Network status: '
     net_ls_cards
     net_ls_addr
     net_ls_routes
     echo 'Loading Linux ...'
     linux (tftp)/boot/vmlinuz inst.ks=http://192.168.136.226/cblr/svc/op/ks/profile/rhel73-x86_64
     echo 'Loading initial ramdisk ...'
     initrd (tftp)/boot/initrd.img
}

grub2-mkstandalone -d /usr/lib/grub/x86_64-efi/ -O x86_64-efi --fonts=“unicode” -o /var/lib/tftpboot/bootx64.efi boot/grub/grub.cfg
systemctl restart dnsmasq.

Just power up uefi.

Dhcpd log blow

May 20 23:46:05 localhost.localdomain dhcpd[844]: DHCPDISCOVER from 00:0c:29:87:09:d5 via ens33
May 20 23:46:06 localhost.localdomain dhcpd[844]: DHCPOFFER on 192.168.136.246 to 00:0c:29:87:09:d5 via ens33
May 20 23:46:08 localhost.localdomain dhcpd[844]: DHCPREQUEST for 192.168.136.246 (192.168.136.200) from 00:0c:29:87:09:d5 via ens33
May 20 23:46:08 localhost.localdomain dhcpd[844]: DHCPACK on 192.168.136.246 to 00:0c:29:87:09:d5 via ens33
May 20 23:48:36 localhost.localdomain dhcpd[844]: DHCPDISCOVER from 00:0c:29:87:09:d5 via ens33
May 20 23:48:37 localhost.localdomain dhcpd[844]: DHCPOFFER on 192.168.136.246 to 00:0c:29:87:09:d5 via ens33
May 20 23:48:40 localhost.localdomain dhcpd[844]: DHCPREQUEST for 192.168.136.246 (192.168.136.200) from 00:0c:29:87:09:d5 via ens33
May 20 23:48:40 localhost.localdomain dhcpd[844]: DHCPACK on 192.168.136.246 to 00:0c:29:87:09:d5 via ens33
May 20 23:50:08 localhost.localdomain dhcpd[844]: DHCPDISCOVER from 00:0c:29:87:09:d5 via ens33
May 20 23:50:09 localhost.localdomain dhcpd[844]: DHCPOFFER on 192.168.136.246 to 00:0c:29:87:09:d5 via ens33
May 20 23:50:09 localhost.localdomain dhcpd[844]: DHCPREQUEST for 192.168.136.246 (192.168.136.200) from 00:0c:29:87:09:d5 via ens33
May 20 23:50:09 localhost.localdomain dhcpd[844]: DHCPACK on 192.168.136.246 to 00:0c:29:87:09:d5 via ens33
May 20 23:50:26 localhost.localdomain dhcpd[844]: DHCPREQUEST for 192.168.136.246 from 00:0c:29:87:09:d5 via ens33
May 20 23:50:26 localhost.localdomain dhcpd[844]: DHCPACK on 192.168.136.246 to 00:0c:29:87:09:d5 via ens33

Dnsmasq log blow

5月 20 23:46:05 cobbler dnsmasq-dhcp[1499]: 1607759066 available DHCP subnet: 192.168.136.200/255.255.255.0
5月 20 23:46:05 cobbler dnsmasq-dhcp[1499]: 1607759066 vendor class: PXEClient:Arch:00009:UNDI:003016
5月 20 23:46:05 cobbler dnsmasq-dhcp[1499]: 1607759066 PXE(ens33) 00:0c:29:87:09:d5 proxy
5月 20 23:46:05 cobbler dnsmasq-dhcp[1499]: 1607759066 tags: UEFI64, ens33
5月 20 23:46:05 cobbler dnsmasq-dhcp[1499]: 1607759066 next server: 192.168.136.226
5月 20 23:46:05 cobbler dnsmasq-dhcp[1499]: 1607759066 broadcast response
5月 20 23:46:05 cobbler dnsmasq-dhcp[1499]: 1607759066 sent size:  1 option: 53 message-type  2
5月 20 23:46:05 cobbler dnsmasq-dhcp[1499]: 1607759066 sent size:  4 option: 54 server-identifier  192.168.136.226
5月 20 23:46:05 cobbler dnsmasq-dhcp[1499]: 1607759066 sent size:  9 option: 60 vendor-class  50:58:45:43:6c:69:65:6e:74
5月 20 23:46:05 cobbler dnsmasq-dhcp[1499]: 1607759066 sent size: 17 option: 97 client-machine-id  00:56:4d:15:7a:51:36:e6:8f:fd:fe:4d:c4:27...
5月 20 23:46:08 cobbler dnsmasq-dhcp[1499]: 1607759066 available DHCP subnet: 192.168.136.200/255.255.255.0
5月 20 23:46:08 cobbler dnsmasq-dhcp[1499]: 1607759066 vendor class: PXEClient:Arch:00009:UNDI:003016
5月 20 23:46:08 cobbler dnsmasq-dhcp[1499]: 1726852750 available DHCP subnet: 192.168.136.200/255.255.255.0
5月 20 23:46:08 cobbler dnsmasq-dhcp[1499]: 1726852750 vendor class: PXEClient:Arch:00009:UNDI:003016
5月 20 23:46:08 cobbler dnsmasq-dhcp[1499]: 1726852750 PXE(ens33) 00:0c:29:87:09:d5 proxy
5月 20 23:46:08 cobbler dnsmasq-dhcp[1499]: 1726852750 tags: UEFI64, ens33
5月 20 23:46:08 cobbler dnsmasq-dhcp[1499]: 1726852750 bootfile name: bootx64.efi
5月 20 23:46:08 cobbler dnsmasq-dhcp[1499]: 1726852750 server name: 192.168.136.226
5月 20 23:46:08 cobbler dnsmasq-dhcp[1499]: 1726852750 next server: 192.168.136.226
5月 20 23:46:08 cobbler dnsmasq-dhcp[1499]: 1726852750 sent size:  1 option: 53 message-type  5
5月 20 23:46:08 cobbler dnsmasq-dhcp[1499]: 1726852750 sent size:  4 option: 54 server-identifier  192.168.136.226
5月 20 23:46:08 cobbler dnsmasq-dhcp[1499]: 1726852750 sent size:  9 option: 60 vendor-class  50:58:45:43:6c:69:65:6e:74
5月 20 23:46:08 cobbler dnsmasq-dhcp[1499]: 1726852750 sent size: 17 option: 97 client-machine-id  00:56:4d:15:7a:51:36:e6:8f:fd:fe:4d:c4:27...
5月 20 23:48:36 cobbler dnsmasq-dhcp[1499]: 430386701 available DHCP subnet: 192.168.136.200/255.255.255.0
5月 20 23:48:36 cobbler dnsmasq-dhcp[1499]: 430386701 vendor class: PXEClient:Arch:00009:UNDI:003016
5月 20 23:48:36 cobbler dnsmasq-dhcp[1499]: 430386701 PXE(ens33) 00:0c:29:87:09:d5 proxy
5月 20 23:48:36 cobbler dnsmasq-dhcp[1499]: 430386701 tags: UEFI64, ens33
5月 20 23:48:36 cobbler dnsmasq-dhcp[1499]: 430386701 next server: 192.168.136.226
5月 20 23:48:36 cobbler dnsmasq-dhcp[1499]: 430386701 broadcast response
5月 20 23:48:36 cobbler dnsmasq-dhcp[1499]: 430386701 sent size:  1 option: 53 message-type  2
5月 20 23:48:36 cobbler dnsmasq-dhcp[1499]: 430386701 sent size:  4 option: 54 server-identifier  192.168.136.226
5月 20 23:48:36 cobbler dnsmasq-dhcp[1499]: 430386701 sent size:  9 option: 60 vendor-class  50:58:45:43:6c:69:65:6e:74
5月 20 23:48:36 cobbler dnsmasq-dhcp[1499]: 430386701 sent size: 17 option: 97 client-machine-id  00:56:4d:15:7a:51:36:e6:8f:fd:fe:4d:c4:27...
5月 20 23:48:40 cobbler dnsmasq-dhcp[1499]: 430386701 available DHCP subnet: 192.168.136.200/255.255.255.0
5月 20 23:48:40 cobbler dnsmasq-dhcp[1499]: 430386701 vendor class: PXEClient:Arch:00009:UNDI:003016
5月 20 23:48:40 cobbler dnsmasq-dhcp[1499]: 549480385 available DHCP subnet: 192.168.136.200/255.255.255.0
5月 20 23:48:40 cobbler dnsmasq-dhcp[1499]: 549480385 vendor class: PXEClient:Arch:00009:UNDI:003016
5月 20 23:48:40 cobbler dnsmasq-dhcp[1499]: 549480385 PXE(ens33) 00:0c:29:87:09:d5 proxy
5月 20 23:48:40 cobbler dnsmasq-dhcp[1499]: 549480385 tags: UEFI64, ens33
5月 20 23:48:40 cobbler dnsmasq-dhcp[1499]: 549480385 bootfile name: bootx64.efi
5月 20 23:48:40 cobbler dnsmasq-dhcp[1499]: 549480385 server name: 192.168.136.226
5月 20 23:48:40 cobbler dnsmasq-dhcp[1499]: 549480385 next server: 192.168.136.226
5月 20 23:48:40 cobbler dnsmasq-dhcp[1499]: 549480385 sent size:  1 option: 53 message-type  5
5月 20 23:48:40 cobbler dnsmasq-dhcp[1499]: 549480385 sent size:  4 option: 54 server-identifier  192.168.136.226
5月 20 23:48:40 cobbler dnsmasq-dhcp[1499]: 549480385 sent size:  9 option: 60 vendor-class  50:58:45:43:6c:69:65:6e:74
5月 20 23:48:40 cobbler dnsmasq-dhcp[1499]: 549480385 sent size: 17 option: 97 client-machine-id  00:56:4d:15:7a:51:36:e6:8f:fd:fe:4d:c4:27...
5月 20 23:50:08 cobbler dnsmasq-dhcp[1499]: 278376755 available DHCP subnet: 192.168.136.200/255.255.255.0
5月 20 23:50:08 cobbler dnsmasq-dhcp[1499]: 278376755 vendor class: anaconda-Linux 3.10.0-514.el7.x86_64 x86_64
5月 20 23:50:09 cobbler dnsmasq-dhcp[1499]: 278376755 available DHCP subnet: 192.168.136.200/255.255.255.0
5月 20 23:50:09 cobbler dnsmasq-dhcp[1499]: 278376755 vendor class: anaconda-Linux 3.10.0-514.el7.x86_64 x86_64
5月 20 23:50:26 cobbler dnsmasq-dhcp[1499]: 2725144841 available DHCP subnet: 192.168.136.200/255.255.255.0
5月 20 23:50:26 cobbler dnsmasq-dhcp[1499]: 2725144841 vendor class: anaconda-Linux 3.10.0-514.el7.x86_64 x86_64

Tftp log blow

5月 20 23:46:09 cobbler in.tftpd[2257]: RRQ from 192.168.136.246 filename bootx64.efi
5月 20 23:46:09 cobbler in.tftpd[2258]: RRQ from 192.168.136.246 filename bootx64.efi
5月 20 23:48:41 cobbler in.tftpd[2285]: RRQ from 192.168.136.246 filename bootx64.efi
5月 20 23:48:41 cobbler in.tftpd[2286]: RRQ from 192.168.136.246 filename bootx64.efi
5月 20 23:48:58 cobbler in.tftpd[2287]: RRQ from 192.168.136.246 filename /boot/vmlinuz
5月 20 23:49:04 cobbler in.tftpd[2288]: RRQ from 192.168.136.246 filename /boot/initrd.img

***Now, the uefi boot is done.
It’s not perfect.
Cuz in grub.cfg we need write nextserver ip & host ip,
And grub2-mkstandalone command write grub.cfg in bootx64.efi, cuz I change boot/grub/grub.cfg it’s. not working.
So now I working to grub lib, want find way to solve this 3 problem.

If anybody working with grub/grub2, can give me some idea? thank you very much.***