There are three functions the oscar headnode provides relative to DHCP and serving the images:
1) DHCP server 2) tftp server to deliver the kernel and initrd to the client (compute) nodes (plus elilo stuff on Itanium2) 3) image (rsync) server to deliver the actual image to the client nodes. So, you need to be clear on what you're moving to the other server. Clearly, moving DHCP service to the other server is easiest. You'll also need to consider what other DHCP service the other server provides, and properly merge the existing and new configurations while leaving the other functions on the oscar headnode. The standard dhcpd.conf file allows defaults to handle the definition of the tftp and the image servers. Item 2 is specified by the "next-server" statement; item 3 is specified by "option-140". There are additional issues if you're running the image service over SSH also, but OSCAR doesn't directly support that, as we assume a cluster-private network. -- David N. Lombard My comments represent my opinions, not those of Intel Corporation. >-----Original Message----- >From: [EMAIL PROTECTED] [mailto:oscar-users- >[EMAIL PROTECTED] On Behalf Of Bernard Li >Sent: Monday, January 31, 2005 9:59 AM >To: Susanne Hemker; [email protected] >Subject: RE: [Oscar-users] Oscar 4 - second server > >Hi Susanne: > >On a OSCAR cluster, the DHCP server and the image server are both on the >headnode. If you want to use another server as the DHCP server, it's >possible but a little tricky. Basically the installation process >assumes that your headnode is the DHCP server, so each time you made any >DHCP-related modifications (namely mods to /etc/dhcpd.conf), it has to >be copied to your designated DHCP server manually. > >It is not necessary to copy the images to the DHCP server - the image >server will still reside on your cluster's headnode. > >Cheers, > >Bernard > >> -----Original Message----- >> From: [EMAIL PROTECTED] >> [mailto:[EMAIL PROTECTED] On Behalf Of >> Susanne Hemker >> Sent: Monday, January 31, 2005 6:05 >> To: [email protected] >> Subject: [Oscar-users] Oscar 4 - second server >> >> Hi everybody, >> hi Bernard, >> >> thanks for your last advice. >> >> I have one more question: >> >> If I want to have another server acting as a dhcp-Server for >> my nodes, what do I have to do? >> Is it sufficient to copy the dhcpd.conf from my oscar server >> and the image in /var/lib/systemimager or do I need anything else? >> >> Thanks, >> >> Susanne >> >> Dr. Susanne Hemker >> Division of Medical Imaging Physics >> The Russell H. Morgan Department of Radiology and >> Radiological Science Johns Hopkins Medical Institutions >> >> http://dmip.rad.jhmi.edu >> >> >> ------------------------------------------------------- >> This SF.Net email is sponsored by: IntelliVIEW -- Interactive >> Reporting Tool for open source databases. Create drag-&-drop >> reports. Save time by over 75%! Publish reports on the web. >> Export to DOC, XLS, RTF, etc. >> Download a FREE copy at http://www.intelliview.com/go/osdn_nl >> _______________________________________________ >> Oscar-users mailing list >> [email protected] >> https://lists.sourceforge.net/lists/listinfo/oscar-users >> > > >------------------------------------------------------- >This SF.Net email is sponsored by: IntelliVIEW -- Interactive Reporting >Tool for open source databases. Create drag-&-drop reports. Save time >by over 75%! Publish reports on the web. Export to DOC, XLS, RTF, etc. >Download a FREE copy at http://www.intelliview.com/go/osdn_nl >_______________________________________________ >Oscar-users mailing list >[email protected] >https://lists.sourceforge.net/lists/listinfo/oscar-users ------------------------------------------------------- This SF.Net email is sponsored by: IntelliVIEW -- Interactive Reporting Tool for open source databases. Create drag-&-drop reports. Save time by over 75%! Publish reports on the web. Export to DOC, XLS, RTF, etc. Download a FREE copy at http://www.intelliview.com/go/osdn_nl _______________________________________________ Oscar-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/oscar-users
