Networking :: DHCPD Service Keeps Failing In CentOS 5.4
Jan 21, 2010
I'm having some trouble with getting my DHCP service up and running on my server. Below is my /etc/dhcpd.conf file, which I believe is the right file necessary to get this service up and running correctly. When I do service dhcpd restart it just show in red letter [Failed] next to it.
Code:
ddns-update-style interim;
ignore client-updates;
subnet 10.2.3.1 netmask 255.0.0.0 {
# --- default gateway
#option routers 10.2.1.1;
#option subnet-mask255.0.0.0;
#option nis-domain"domain.org";
#option domain-name"domain.org";
#option domain-name-servers10.7.8.1;
option time-offset-18000;# Eastern Standard Time
#option ntp-servers192.168.1.1;
#option netbios-name-servers192.168.1.1;
# --- Selects point-to-point node (default is hybrid). Don't change this unless
# -- you understand Netbios very well
#option netbios-node-type 2;
range dynamic-bootp 10.2.3.2 10.2.3.254;
default-lease-time 21600;
max-lease-time 43200;
# we want the nameserver to appear at a fixed address
#host ns {
#next-server marvin.redhat.com;
#hardware ethernet 12:34:56:78:AB:CD;
#fixed-address 207.175.42.254; } }
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Mar 5, 2011
I have recently installed CentOS onto an old machine to get it up and running as a basic web/mail server. Originally the Network Interface worked ok, however I have been editing /etc/sysconfig/network-scripts/ifcfg-eth0 to try and set the IP address to be static.Now when I run the 'service network restart' command it won't bring the eth0 interface up and comes up with the following errors;
ifcfg-eth0 Line 3 DEVICE: command not found
missing config file ifcfg-ifcfg-eth0
It doesn't seem to like any of the command words, even though most of these were in the original file that worked and the ones I added to do static I have commented out.
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Jan 19, 2010
I just installed F12 from scratch and I'm facing a curious situation with dhpd. The service is enabled, but It fails to start on boot. I see the following error on /var/log/messages:
Jan 18 17:15:28 neo dhcpd: No subnet declaration for eth1 (no IPv4 addresses).
Jan 18 17:15:28 neo dhcpd: ** Ignoring requests on eth1. If this is not what
Jan 18 17:15:28 neo dhcpd: you want, please write a subnet declaration
Jan 18 17:15:28 neo dhcpd: in your dhcpd.conf file for the network segment
Jan 18 17:15:28 neo dhcpd: to which interface eth1 is attached. **
However service dhcpd start, works just fine when I login, after the system boots:
Jan 18 17:26:49 neo dhcpd: Internet Systems Consortium DHCP Server 4.1.0p1
Jan 18 17:26:49 neo dhcpd: Copyright 2004-2009 Internet Systems Consortium.
Jan 18 17:26:49 neo dhcpd: All rights reserved.
Jan 18 17:26:49 neo dhcpd: For info, please visit [URL]
Jan 18 17:26:49 neo dhcpd: WARNING: Host declarations are global. They are not limited to the scope you declared them in.
Jan 18 17:26:49 neo dhcpd: Not searching LDAP since ldap-server, ldap-port and ldap-base-dn were not specified in the config file
Jan 18 17:26:49 neo dhcpd: Wrote 0 deleted host decls to leases file.
Jan 18 17:26:49 neo dhcpd: Wrote 0 new dynamic host decls to leases file.
Jan 18 17:26:49 neo dhcpd: Wrote 5 leases to leases file.
Jan 18 17:26:49 neo dhcpd: Listening on LPF/eth1/00:30:48:80:2e:7e/192.168.1.0/24
Jan 18 17:26:49 neo dhcpd: Sending on LPF/eth1/00:30:48:80:2e:7e/192.168.1.0/24
Jan 18 17:26:49 neo dhcpd: Sending on Socket/fallback/fallback-net
So it can't be a problem with my dhcpd.conf file.
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Jul 19, 2010
I am a Linux newbie using Oracle Enterprise Linux version 4 update 7 (its almost similar to Redhat Linux). While going through tutorials, I tried to configure the DCHP service and set it to start after every boot via the command
chkconfig dhcpd on
When I boot my Linux,the OS hangs when it tries to start the dhcpd service.Thus,I cannot log into my Linux and shutdown the service. How can I go around this and shutdown the DHCP service to enable my Linux to fully load after a boot?
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Mar 14, 2010
My dhcpd service get failed every time when I try to start it
1) Actually I have a lan connection which has a static ip network 192.168.10.0/24 and the pc to which is using the dhcpd has a ip address 192.168.10.1/24
2) And I have a internet connection wirelessly which has a network 192.168.2.0/24
Now I want to problem ip address in the network of 192.168.10.0/24
Here below is the configuration file of dhcp server:
# dhcpd.conf
#
# Sample configuration file for ISC dhcpd
#
# option definitions common to all supported networks...
option domain-name "example.org";
option domain-name-servers ns1.example.org, ns2.example.org;
# Use this to enble / disable dynamic dns updates globally.
#ddns-update-style none; .....
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Aug 26, 2009
Does anyone know where I can find RHEL compatible rpms for Bind 9.7 and DHCPD 4.1?
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Jun 7, 2010
I have setup a CentOS 5.5 server as a DHCP server. That will be it's only task in a Cisco callmanger VoIP environment The DHCP server that comes with CentOS 5.5 is from ISC V3.0.5 -redhat.
The server (HP DL360) has two physical NIC's of which only NIC1 is used (ETH0)
ifconfig shows:
Code:
The interface has a fixed IP setup.
My dhcp.conf file looks like this:
Code:
When I start (try to) dhcpd via the service interface or via the prompt as
Code: service dhcpd start
I get an [FAILED] message and the following is in /var/log/messages
Code:
But when I start the DHCPD on the comamnd prompt in debug mode it looks as follows:
Code:
and /var/log/messages shows:
Code:
Why does the system ask a declaration for eth0 0.0.0.0?
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Jan 25, 2011
We have two recently installed centos machines, each running 5.5, and hosting an elastix pabx distro as well as a Virtual PC instance. On both machines, the network adaptor fails completely every week or so. As they are remote machines, the only option we have when this happens is a manual reboot.
I might be barking up the wrong tree here, but the only significant difference on these machines to others we have deployed is the Virtual PC instance. The machines have dual ethernet ports, with one assigned to the virtual PC. When the network failure occurs, it does not effect the virtual machine, which continues along merrily.
My expert colleague does not think so, but can anyone think of any way that our configuration could be causing the problem? If not, does anyone have any ideas on what the problem could be, or where I would start looking for information on the machine to debug the issue?
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Jun 20, 2011
I've found a lot of pages of how to fix the issue on older releases of dhcpd and ubuntu.
#>dhcpd
#> ...
#> Can't create PID file /var/run/dhcpd.pid: Permission denied.
I have tried creating the file and giving it permissions to be accessed, but that isn't solving the issue. I tried to go through some of the older fixes, and one was really close to working but lacked the same folders as I have.
EDIT: one solution that worked was to use ln -s /var/run/dhcp3-server/dhcpd.pid /var/run/dhcpd.pid dhcpd3 -cf /etc/dhcp3/dhcpd.conf at0
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Mar 11, 2009
Well, i can not install httpd service, when i execute yum -y install httpd i get this message
Could not retrieve mirrorlist http://mirrorlist.centos.org/?release=5&arch=i386&repo=os error was
[Errno 4] IOError: <urlopen error (-3, 'Temporary failure in name resolution')>
Error: Cannot retrieve repository metadata (repomd.xml) for repository: base. Please verify its path and try again
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May 9, 2009
I have CentOS 5.2 just installed and massively updated with yum -update command. Than I tried to configure firewall. After changes via system_config_securitylevel_tui (open ssh, http, ftp, and 3306:TCP ports) iptables service can't start with message
> /sbin/service iptables start
Flushing firewall rules: [OK]
Setting chains to policy ACCEPT: mangle filter nat [OK]
Unloading iptables modules: [OK]
Applying iptables firewall rules: iptables-restore v1.3.5: Couldn't load match `TCP':/lib64/iptables/libipt_TCP.so: cannot open shared object file: No such file or directory
Error occurred at line: 18
Try `iptables-restore -h' or 'iptables-restore --help' for more information.
[FAILED]
I erased the iptables service and installed it again with yum. How can I make this service work?
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Aug 23, 2009
My box is centos 5.3 x86. At booting, ipsec_setup messages are coming as attached picture.
And dhcpd also comes "failed".
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Sep 21, 2010
Here is what I need to accomplish but somehow not getting where I need:
Server A:
-OpenVPN Server
-NIC1 = Internet (vnet - public IP address)
-Tun0 - 172.16.0.1
Server B:
-OpenVPN Client - Connects to Server A as a Client.
[Code]...
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Oct 27, 2010
From my office and home, I can access a web service, no problem. However, from my server at the data center, I cannot. Could this be a DNS issue? I've tried with iptables enabled and disabled. selinux is disabled. This server has multiple network interfaces, one public and two private. The public has a WAN IP address (1.1.1.1), the private is 10.1.10.2 and the other private is connected via crossover cable to another server 192.168.100.1. I think route -n tells me the WAN interface is used to access the internet, as its gateway is my ISP's upstream gateway. CentOS 5.5.
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Nov 14, 2010
i am trying to use /etc/sysconfig/dhcpd to specify alternate config directory. My file looks like: # Command line options here DHCPDARGS=-cf /etc/dhcpd/dhcpd.conf
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Nov 30, 2009
I have recently installed Centos 5.4 on a server with 3 network cards. I am trying to enable IP forwarding which has been successful by executing the following command:
echo 1 > /proc/sys/net/ipv4/ip_forward
I tried to make this permanent by adding net.ipv4.conf.default.forwarding=1 to the /etc/sysctl.conf file.
When I restart the network service I get the following code...
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Sep 14, 2009
this should be trivial for all you big sysadmin guys My box is a firewall/gateway. ETH0 is on the Internet-side, and is fully auto-configured (DHCP client) from my ISP. ETH1 is on the LAN-side, has DHCPD enabled, and I route the traffic to/from the Internet via iptables (NATting, of course). Everything works pretty good, except for the DNS-server assignment via DHCP: how can I configure dhcpd.conf to assign the SAME dns-server I receive from my provider on ETH0 to all my PC on ETH1?
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Feb 8, 2011
I'm trying to write an upstart conf file to get Murmur (the Mumble server) to run as a service. It's located in /etc/murmur, and I'm using the following script in /etc/init/murmur.conf:
[Code]...
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Jul 22, 2010
I have setup a dhcpd server on my lan with the following option to reflect the static route to my private LAN.
dhcpd.conf
Code:
option static-routes 10.0.0.0 192.16.5.0
I've tested it on OpenSUSE, ArchLinux and even Windows dhcp clients and they've managed to pull the static route configuration. However, to my suprise on my ubuntu machines this doesn't seem to load. Is there anything that needs to be done on the client's side to get this to work?
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Sep 22, 2010
How can I start dhcpd after Network manager has set up a new connected device. The reason being that dhcpd will not start when there is nothing connected to the network interface. Therefore I would like dhcpd to start after a new device is connected. Now I have found references if ifup-post but this does not relate to NM, is this correct?
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Mar 30, 2010
How to tell dhcpd to listen to ifcfg-bond0 ?
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Feb 16, 2011
I'm trying to get dhcpd to use a specific IP address as the source address for responses it uses an IP address for. I coded "local-address 172.30.0.4" in the config file. For some responses it uses this address. For some other responses it does not. In those cases it uses the IP address that is the first on the interface. Is there another configuration I should be using, instead?
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Mar 1, 2011
I am familiar with windows 2008 cluster servers, and I just started testing with centos cluster. I am creating a simple 2-node cluster, for a simple ping test.
Node 1: 10.0.0.1
Node 2: 10.0.0.1
Virtual ip: 10.0.0.10
So far, I can ping a virtual ip, and manually relocate it between the nodes, but I didn't figure out, how to do this automatically. So this is my question: How can I setup the cluster, to it automatically failover the a service to another node case one node fails?
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Dec 29, 2010
I have a router with ddwrt on it that runs a DHCP server. What I want to do is only allow people who have pre-determined MAC addresses to get an address to get on my network. That being said I have a VM set up as a DHCP Server. Since doing this I will be setting the dhcp settings on my router to be a forwarder to the VM. Is there a way to allow only static leases in the dhcpd.conf file? I do not just any computer on my network to get an address I want to base it on MAC addresses.
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Jan 17, 2010
ver: 9.10 how do I restart dhcp3 after changing dhcpd.conf?
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Feb 8, 2011
How to find IP address of computers in LAN served by simple DHCPd (in ADSL modem - without IP reservations/MAC address).
So is in Ubuntu something like on-fly name resolution in Windows ? Without running DNS server with some kind of DynDNS ?
e.g.
My comp has hostname "GoGo" but I get random IP address from DHCP.
How can other PC on same LAN resolve my changing IP address ?
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Sep 2, 2010
I'm configuring a new Centos 5.5 server in replacement of an old W2K server.The topology of our network is simple : one file/dhcp/dns relay server and workstations (PC's and some MAC's) plus network printers and scanners.All the workstations have dynamic IP addresses (easier because a lot of 'dynamic' changes : new persons with their own laptop, ...) and the server and printers/scanners have fixed IP addresses.I edited the dhcpd.conf (see here underneath), I have the file dhcpd.leases but it doesn't start !
DHCPD.CONF
ddns-update-style interim;
ignore client-updates;
[code].....
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Sep 8, 2010
I have my server configured to update automatically every night. However, updates are failing with the following message: There was a problem updating the system. The following error message was reported:
['Not installing key'] If the problem persists, manual intervention may be required. how to troubleshoot or resolve this issue?
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Feb 26, 2011
I have Dell rack server. With the network card of five network ports. But I am just using first one (eth0).
Now the problem:
Its connected the internet and the internet is working fine. I also got update using yum.
When I do ifconfig to check its dynamic IP. It also shows the IP(something like: 192.168.x.x), but if I go to services and try to start DHCPd service its fails. Its not starting at all. And If I go to other computer (Windows 7) and try to ping the dell servers IP, I cannot ping it. So since I cannot ping it from other computer, so no one we can have remote access to the dell server.
I dont understand without starting DHCPd how the dell server is getting the IP address.
So I thought maybe DHCP is corrupted so I removed it using yum and reinstalled it using yum, but no luck so far.
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Jun 26, 2010
I am running CentOS-5x as guest OS in VMware workstation environment. Till, yesterday everything was fine... Today, when i start up I don't see the Desktop coming up, may be the GDM is failing in some way ( guess though). Xserver is working, coz I could see xclock/xyes are loading, also i have checked /etc/inittab, runlevel is set to 5. I did not see any entry in /etc/sysconfig/desktop, thus it shows DESKTOP="" I tried to change it to DESKTOP="GNOME", but it has not worked.
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