Hi Srikanth,
You can use hosts file for hpc cluster domain and bypass mydom.net to your
external DNS.
use xCAT hosts table to populate your /etc/hosts file, use the default ‘sync
files’ postscripts and updatenode to sync it periodically.
http://xcat.sourceforge.net/man8/makehosts.8.html
http://sourceforge.net/apps/mediawiki/xcat/index.php?title=Sync-ing_Config_Files_to_Nodes
you can modify noderes table to override name server list or roll your own
postscripts.
Regards,
Heince
On Mar 1, 2014, at 3:41 PM, Srikanth Gumma <sri4mail...@gmail.com> wrote:
> Hi All,
>
> I'm a newbie to xCAT installation.
>
> I'm trying to setup xCAT for my hpc cluster. My requirement regarding DNS is
> little different and hope some one would help me resolve the issue currently
> I'm facing.
>
> I setup the management node with hpc.mydom.net as my hpc domain. My cluster
> each node has 3 interfaces private, public and Infiniband respectively. My
> organization domain is mydom.net which is hosting records for the entire
> organization and I cannot register all my HPC node names in the same domain.
> Hence I setup a local DNS in my management node.
>
> I want all my compute nodes to resolve all hosts registered under mydom.net
> aswell as hpc.mydom.net.
>
>
> To make it simple:
>
> mydom.net (NS1)
> |
> |
> hpc.mydom.net (xcatMGMT)
> |
> |
> nod1.hpc.mydom.net (my compute nodes)
> nod2.hpc.mydom.net
> .
> .
> .
>
> Typically I want my nod2.hpc.mydom.net to resolve node1.hpc.mydom.net and
> licserv1.mydom.net both IPs.
>
> What I wanted to do is any name resolution which does not belong to
> hpc.mydom.net should forward to mydom.net, but when I verify the
> configuration I see the zone definition in my xcatMTMT it looks like the
> below and hence it's not able to resolve licserv1.mydom.net IPs
>
> zone "mydom.net" in {
> type master;
> allow-update {
> key xcat_key;
> };
> file "db.mydom.net";
> };
>
> I understood that my xcatMGMT is thinking that it's master for mydom.net, and
> due to which the name resolution is not happening for servers such as
> licserv1.mydom.net, etc.,
> I tried to change the DNS configuration manually, but whenever I run makedns
> it's just overwriting all my previous configuration. Is there any way that I
> only add new nodes in the hpc.mydom.net domain and does not overwrite dns
> configuration?
>
>
> A glance on my site configuration and network configuration is below:
>
> # lsdef -t site -i domain,nameservers,forwarders
> Object name: clustersite
> domain=hpc.mydom.net
> forwarders=172.27.0.252,172.27.0.254
> nameservers=192.168.20.1
>
>
> # lsdef -t network ibnet4,publicnet4,clusternet4
> Object name: ibnet4
> dhcpserver=192.168.20.1
> dynamicrange=192.168.30.88-192.168.30.175
> mask=255.255.255.0
> mgtifname=eth0
> net=192.168.20.0
> Object name: publicnet4
> dhcpserver=192.168.20.1
> domain=mydom.net
> dynamicrange=10.1.0.11-10.1.0.200
> gateway=10.1.0.1
> mask=255.255.0.0
> mgtifname=eth0
> net=10.1.0.0
> Object name: clusternet4
> dhcpserver=192.168.20.1
> domain=hpc.mydom.net
> dynamicrange=192.168.20.88-192.168.20.175
> mask=255.255.255.0
> mgtifname=eth0
> net=192.168.20.0
> tftpserver=192.168.20.1
>
>
>
> Any other suggestions also welcome . Thanks for your guidance in advance.
>
> Regards
> Srikanth Gumma
>
>
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Customize your own dashboards, set traffic alerts and generate reports.
Network behavioral analysis & security monitoring. All-in-one tool.
http://pubads.g.doubleclick.net/gampad/clk?id=126839071&iu=/4140/ostg.clktrk
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