Why is my DHCP Server not running
17,165
Strange, strange, strange...
I get it working after i copied a default config file and edited our network into it.
Helpful for debugging are /usr/sbin/dhcpd -t and -f
Here is my config now:
default-lease-time 60;
max-lease-time 240;
authoriative;
option domain-name "psa-team06.informatik.tu-muenchen.de";
option domain-name-servers router.psa-team1.informatik.tu-muenchen.de;
authoriative;
subnet 192.168.6.0 netmask 255.255.255.0 {
option broadcast-address 192.168.6.255;
option routers 192.168.6.3;
range 192.168.6.100 192.168.6.200;
}
host VM1 {
hardware ethernet 08:00:27:24:41:79;
fixed-address 192.168.6.3;
}
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Author by
Leon D
Updated on September 18, 2022Comments
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Leon D over 1 year
I set up my
/etc/default/isc-dhcp-server
and set eth0 in/etc/dhcp/dhcpd.conf
Why is the isc-dhcp Server not running? When I execute
sudo service isc-dhcp-server status
and got this:root@ubuntu:~# service isc-dhcp-server status ● 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 Di 2015-11-03 15:27:57 CET; 15s ago Docs: man:dhcpd(8) Process: 6982 ExecStart=/bin/sh -ec CONFIG_FILE=/etc/dhcp/dhcpd.conf; if [ -f /etc/ltsp/dhcpd.conf ]; then CONFIG_FILE=/etc/ltsp/dhcpd.conf; fi; [ -e /var/lib/dhcp/dhcpd.leases ] || touch /var/lib/dhcp/dhcpd.leases; chown root:root /var/lib/dhcp /var/lib/dhcp/dhcpd.leases*; exec dhcpd -user dhcpd -group dhcpd -f -4 -pf /run/dhcp-server/dhcpd.pid -cf $CONFIG_FILE $INTERFACES (code=exited, status=1/FAILURE) Process: 6979 ExecStartPre=/bin/chown dhcpd:dhcpd /run/dhcp-server (code=exited, status=0/SUCCESS) Main PID: 6982 (code=exited, status=1/FAILURE) Nov 03 15:27:57 ubuntu systemd[1]: isc-dhcp-server.service: Main process exited, code=exited, status=1/FAILURE Nov 03 15:27:57 ubuntu systemd[1]: isc-dhcp-server.service: Unit entered failed state. Nov 03 15:27:57 ubuntu systemd[1]: isc-dhcp-server.service: Failed with result 'exit-code'. Nov 03 15:27:57 ubuntu sh[6982]: Configuration file errors encountered -- exiting
Here is my dhcp.config:
timeout 300; authoritative; #keine Rogue-DHCP-Server one-lease-per-client true; #nur ein lease pro client get-lease-hostnames true; # Tell the server to look up the host name in DNS #option domain-name "psa-team06.informatik.tu-muenchen.de"; #option domain-name-servers 192.168.6.1; #option subnet-mask 255.255.255.0; default-lease-time 3600; max-lease-time 86400; #log-facility local0; interface eth1; #ping-check true; #evtl noch auskommentieren # Unser Subnetz subnet 192.168.6.0 netmask 255.255.255.0 { range 192.168.6.100 192.168.6.250; option routers 192.168.6.3; } host VM1{ hardware ethernet 08:00:27:24:41:79; fixed-adress 192.168.6.3; option host-name "VM1"; }
my
/etc/default/isc-dhcp-server
:# Defaults for isc-dhcp-server initscript # sourced by /etc/init.d/isc-dhcp-server # installed at /etc/default/isc-dhcp-server by the maintainer scripts # # This is a POSIX shell fragment # # Path to dhcpd's config file (default: /etc/dhcp/dhcpd.conf). #DHCPD_CONF=/etc/dhcp/dhcpd.conf # Path to dhcpd's PID file (default: /var/run/dhcpd.pid). #DHCPD_PID=/var/run/dhcpd.pid # Additional options to start dhcpd with. # Don't use options -cf or -pf here; use DHCPD_CONF/ DHCPD_PID instead #OPTIONS="" # On what interfaces should the DHCP server (dhcpd) serve DHCP requests? # Separate multiple interfaces with spaces, e.g. "eth0 eth1". INTERFACES="eth1"
and my ip a:
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default 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: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000 link/ether 08:00:27:5a:70:a3 brd ff:ff:ff:ff:ff:ff inet 10.0.2.15/24 brd 10.0.2.255 scope global eth0 valid_lft forever preferred_lft forever inet6 fe80::a00:27ff:fe5a:70a3/64 scope link valid_lft forever preferred_lft forever 3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000 link/ether 08:00:27:79:73:5d brd ff:ff:ff:ff:ff:ff inet 192.168.6.3/24 brd 192.168.6.255 scope global eth1 valid_lft forever preferred_lft forever inet 192.168.61.1/24 brd 192.168.61.255 scope global eth1 valid_lft forever preferred_lft forever inet 192.168.62.1/24 brd 192.168.62.255 scope global eth1 valid_lft forever preferred_lft forever inet 192.168.63.1/24 brd 192.168.63.255 scope global eth1 valid_lft forever preferred_lft forever inet 192.168.65.1/24 brd 192.168.65.255 scope global eth1 valid_lft forever preferred_lft forever inet 192.168.76.2/24 brd 192.168.76.255 scope global eth1 valid_lft forever preferred_lft forever inet 192.168.86.2/24 brd 192.168.86.255 scope global eth1 valid_lft forever preferred_lft forever inet 192.168.106.2/24 brd 192.168.106.255 scope global eth1 valid_lft forever preferred_lft forever inet 192.168.116.2/24 brd 192.168.116.255 scope global eth1 valid_lft forever preferred_lft forever inet 192.168.126.2/24 scope global eth1 valid_lft forever preferred_lft forever inet6 fe80::a00:27ff:fe79:735d/64 scope link valid_lft forever preferred_lft forever root@ubuntu:~#
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Rinzwind over 8 yearsAnd you have an inferface configured? The notice claims you have not.
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Neil over 8 yearscan you post your dhcp config file.
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Leon D over 8 years@Neil my config file is under the /etc/default/isc-dhcp-server in my question.
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Leon D over 8 years@Rinzwind you mean in the /etc/dhcp/dhcpd.conf?
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Leon D over 8 yearssorry the other way round
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A.B. over 8 yearsWhat's that in your configuration?
option rfc3442-classless-static-routes code 121 = array of unsigned integer 8;
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Leon D over 8 years@A.B. that was an old config, where i mixed things up. I updated the question with the actual config
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We are Borg over 8 yearsTyping error maybe.
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manit over 2 yearsthis command is a life saver.