Changes in dhcpd.conf do not make a difference in DHCP service behaviour
Hi Experts,
Our DHCP server currently answers the DHCP Discover requests from ServerX. In our dhcpd.conf file there are parameters defined for ServerX.
Now we introduced some additional Servers into the network and want them to get service from the same DHCP server.
Similar configuration parameters as currently present for ServerX were added for the other Servers into the dhcpd.conf file.
The dhcpd process was restarted.
However, in the /var/log/messages, we could see the incoming DHCP Discover messages for the newly added servers but no OFFER for them.
Code:
Mar 7 11:18:05 trber dhcpd: DHCPDISCOVER from mac:mac:mac:mac via IP:IP:IP:IP:IP: unknown network segment
The system keeps sending OFFER for the ServerX only.
We rebooted the DHCP server. It is up and the result is still same.
For confirming that the dhcpd service could use the conf file properly, we removed the entries for ServerX in the dhcpd.conf file and restarted the dhcpd process.
Still DHCP server continue to OFFER for ServerX while there are no parameters for it in the conf file.
It makes me feel that dhcpd process is not interested in any change at dhcpd.conf file, even not use it.
How could it happen?
Our dhcpd.conf file stays in /etc directory : /etc/dhcpd.conf
In some server I could see the directory used is /etc/dhcp/ : /etc/dhcp/dhcpd.conf
Do you have any idea who dhcpd service does not use it's conf file?
Moderator's Comments:
Please use CODE tags as required by forum rules!
Last edited by RudiC; 03-07-2019 at 05:05 AM..
Reason: Added CODE tags.
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Discussion started by: hermouche
17 Replies
LEARN ABOUT X11R4
dhcpmgr
dhcpmgr(1M) System Administration Commands dhcpmgr(1M)NAME
dhcpmgr - graphical interface for managing DHCP service
SYNOPSIS
/usr/sadm/admin/bin/dhcpmgr
DESCRIPTION
dhcpmgr is a graphical user interface which enables you to manage the Dynamic Host Configuration Protocol (DHCP) service on the local sys-
tem. It performs the functions of the dhcpconfig, dhtadm, and pntadm command line utilities. You must be root to use dhcpmgr. The dhcpmgr
Help, available from the Help menu, contains detailed information about using the tool.
USAGE
You can perform the following tasks using dhcpmgr:
Configure DHCP service
Use dhcpmgr to configure the DHCP daemon as a DHCP server, and select the data store to use for storing network configuration tables..
Configure BOOTP relay service
Use dhcpmgr to configure the DHCP daemon as a BOOTP relay.
Manage DHCP or BOOTP relay service
Use dhcpmgr to start, stop, enable, disable or unconfigure the DHCP service or BOOTP relay service, or change DHCP server parameters.
Manage DHCP addresses
Use dhcpmgr to add, modify, or delete IP addresses leased by the DHCP service.
Manage DHCP macros
Use dhcpmgr to add, modify or delete macros used to supply configuration parameters to DHCP clients.
Manage DHCP options
Use dhcpmgr to add, modify or delete options used to define parameters deliverable through DHCP.
Convert to a new DHCP data store
Use dhcpmgr to configure the DHCP server to use a different data store, and convert the DHCP data to the format used by the new data
store.
Move DHCP data to another server
Use dhcpmgr to export data from one Solaris DHCP server and import data onto another Solaris DHCP server.
EXIT STATUS
The following exit values are returned:
0 Successful completion.
non-zero An error occurred.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWdhcm |
+-----------------------------+-----------------------------+
|Interface Stability |Evolving |
+-----------------------------+-----------------------------+
SEE ALSO dhcpconfig(1M), dhtadm(1M), pntadm(1M), in.dhcpd(1M), dhcpsvc.conf(4), dhcp_network(4), dhcptab(4), attributes(5), dhcp(5), dhcp_modules(5)
Solaris DHCP Service Developer's Guide
System Administration Guide: IP Services
SunOS 5.10 13 Mar 2001 dhcpmgr(1M)
03-07-2019
