DHCP Service Issue

[mikec96]

Server

• FOG Version: 1.4.4
• OS: Ubuntu 16.04 LTS

Client

• Service Version:
• OS:

Description

I have just installed FOG on a clean install of Ubuntu. Upon restarting Ubuntu, I noticed that my DHCP was not working. Based on suggestions previously given to me on the forum, I performed a few troubleshooting steps.

First, I entered the following into the terminal:

sudo systemctl status isc-dhcp-server.service

and received the following result:

isc-dhcp-server.service - ISC DHCP IPv4 server
  
Loaded: loaded (/lib/systemd/system/isc-dhcp-server.service; enabled; vendor preset: enabled)
   
Active: failed (Result: exit-code) since Tue 2017-09-05 09:57:22 EDT; 1min 43s ago
     
Docs: man:dhcpd(8)
  
Process: 2087 ExecStart=/bin/sh -ec      CONFIG_FILE=/etc/dhcp/dhcpd.conf;      if [ -f /etc/ltsp/dhcpd.conf ]; then CONFIG_FILE=/etc/ltsp/dhcpd.con
 
Main PID: 2087 (code=exited, status=1/FAILURE)



Sep 05 09:57:22 threeriversfog-laptop sh[2087]: Not configured to listen on any interfaces!

Sep 05 09:57:22 threeriversfog-laptop sh[2087]: If you think you have received this message due to a bug rather

Sep 05 09:57:22 threeriversfog-laptop sh[2087]: than a configuration issue please read the section on submitting

Sep 05 09:57:22 threeriversfog-laptop sh[2087]: bugs on either our web page at www.isc.org or in the README file

Sep 05 09:57:22 threeriversfog-laptop sh[2087]: before submitting a bug.  These pages explain the proper

Sep 05 09:57:22 threeriversfog-laptop sh[2087]: process and the information we find helpful for debugging..

Sep 05 09:57:22 threeriversfog-laptop sh[2087]: exiting.

Sep 05 09:57:22 threeriversfog-laptop systemd[1]: isc-dhcp-server.service: Main process exited, code=exited, status=1/FAILURE

Sep 05 09:57:22 threeriversfog-laptop systemd[1]: isc-dhcp-server.service: Unit entered failed state.

Sep 05 09:57:22 threeriversfog-laptop systemd[1]: isc-dhcp-server.service: Failed with result 'exit-code'.

I also entered this command into the terminal:

sudo ip a s

which returned the following:

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
   
	link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
   
	inet 127.0.0.1/8 scope host lo
      
		valid_lft forever preferred_lft forever
   
	inet6 ::1/128 scope host 
       
		valid_lft forever preferred_lft forever


2: enp2s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    
	link/ether 70:e2:4c:68:0e:ca brd ff:ff:ff:ff:ff:ff

Any ideas about what could be going wrong? Thanks in advance!

[george1421]

Please review your isc-dhcp server configuration file. I’m suspecting that its not set. Refer to this example for the proper settings: https://wiki.fogproject.org/wiki/index.php?title=BIOS_and_UEFI_Co-Existence#Example_1

[Sebastian Roth]

@mikec96 There is no IP address configured on the interface enp2s0?? What do you see when running ip link and ifconfig -a?

[mikec96]

@george1421 Is the isc-dhcp server configuration file separate from the dhcpd.conf file? My dhcpd.conf file does not seem to have anything relating to the isc-dhcp section. Below is a copy of the file:

# DHCP Server Configuration file\n#see /usr/share/doc/dhcp*/dhcpd.conf.sample
# This file was created by FOG
#Definition of PXE-specific options
# Code 1: Multicast IP Address of bootfile
# Code 2: UDP Port that client should monitor for MTFTP Responses
# Code 3: UDP Port that MTFTP servers are using to listen for MTFTP requests
# Code 4: Number of seconds a client must listen for activity before trying
#         to start a new MTFTP transfer
# Code 5: Number of seconds a client must listen before trying to restart
#         a MTFTP transfer
option space PXE;
option PXE.mtftp-ip code 1 = ip-address;
option PXE.mtftp-cport code 2 = unsigned integer 16;
option PXE.mtftp-sport code 3 = unsigned integer 16;
option PXE.mtftp-tmout code 4 = unsigned integer 8;
option PXE.mtftp-delay code 5 = unsigned integer 8;
option arch code 93 = unsigned integer 16;
use-host-decl-names on;
ddns-update-style interim;
ignore client-updates;
# Specify subnet of ether device you do NOT want service.
# For systems with two or more ethernet devices.
# subnet 136.165.0.0 netmask 255.255.0.0 {}
subnet 192.168.1.0 netmask 255.255.255.0{
    option subnet-mask 255.255.255.0;
    range dynamic-bootp 192.168.1.10 192.168.1.254;
    default-lease-time 21600;
    max-lease-time 43200;
    #option routers 0.0.0.0
    #option routers 0.0.0.0
    next-server 192.168.1.1;
    class "Legacy" {
        match if substring(option vendor-class-identifier, 0, 20) = "PXEClient:Arch:00000";
        filename "undionly.kkpxe";
    }
    class "UEFI-32-2" {
        match if substring(option vendor-class-identifier, 0, 20) = "PXEClient:Arch:00002";
        filename "i386-efi/ipxe.efi";
    }
    class "UEFI-32-1" {
        match if substring(option vendor-class-identifier, 0, 20) = "PXEClient:Arch:00006";
        filename "i386-efi/ipxe.efi";
    }
    class "UEFI-64-1" {
        match if substring(option vendor-class-identifier, 0, 20) = "PXEClient:Arch:00007";
        filename "ipxe.efi";
    }
    class "UEFI-64-2" {
        match if substring(option vendor-class-identifier, 0, 20) = "PXEClient:Arch:00008";
        filename "ipxe.efi";
    }
    class "UEFI-64-3" {
        match if substring(option vendor-class-identifier, 0, 20) = "PXEClient:Arch:00009";
        filename "ipxe.efi";
    }
    class "SURFACE-PRO-4" {
        match if substring(option vendor-class-identifier, 0, 32) = "PXEClient:Arch:00007:UNDI:003016";
        filename "ipxe7156.efi";
    }
    class "Apple-Intel-Netboot" {
        match if substring(option vendor-class-identifier, 0, 14) = "AAPLBSDPC/i386";
        option dhcp-parameter-request-list 1,3,17,43,60;
        if (option dhcp-message-type = 8) {
            option vendor-class-identifier "AAPLBSDPC";
            if (substring(option vendor-encapsulated-options, 0, 3) = 01:01:01) {
                # BSDP List
                option vendor-encapsulated-options 01:01:01:04:02:80:00:07:04:81:00:05:2a:09:0D:81:00:05:2a:08:69:50:58:45:2d:46:4f:47;
                filename "ipxe.efi";
            }
        }
    }
}

[mikec96]

@Sebastian-Roth Apparently not, even though I specified 192.168.1.1 in the installation. I installed FOG while connected to the internet, then disconnected from the internet for use in an isolated network.

Here is the ip link result:

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: enp2s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP mode DEFAULT group default qlen 1000
    link/ether 70:e2:4c:68:0e:ca brd ff:ff:ff:ff:ff:ff

And here is the ifconfig -a result:

enp2s0    Link encap:Ethernet  HWaddr 70:e2:4c:68:0e:ca  
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1031 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 B)  TX bytes:213387 (213.3 KB)

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:18542 errors:0 dropped:0 overruns:0 frame:0
          TX packets:18542 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:1371382 (1.3 MB)  TX bytes:1371382 (1.3 MB)

[george1421]

@mikec96 you need to get a static IP address defined for your fog server. That is the first part of the issue. Your dhcp server settings appear correct, so that isn’t the problem.

[mikec96]

@george1421 Thank you very much for your help! This might sound like a stupid question, but would I need to do that within Ubuntu’s “Network Connections” tool, or is that something I would need to set within FOG during installation or through the FOG web portal?

[george1421]

@mikec96 first step is the network connection tool. You need to make linux happy first then rerun the fog installer to get fog realigned with the new IP address.

[mikec96]

@george1421 I just set the static IP, and everything works beautifully now! I tested connecting another machine and performing a PXE boot as well. Thanks for your help!

[george1421]

@mikec96 Case closed now?

[mikec96]

@george1421 Yes, I’m all set. Am I able to mark the post as solved, or do I not have that ability?