topic Re: cluster query in Operating System - HP-UX

cluster query

himacs — Thu, 20 Jan 2011 06:00:07 GMT

B.11.23
MC/SG cluster 11.17

I am getting below error while executing cluster commands

root@UAEDXBPD /paradmin>cmgetconf
Permission denied to 127.0.0.1
cmgetconf: Unable to get local cluster configuration information: No such file or directory.
Either cluster is not configured, or the user doesn't
have access to get the cluster configuration.
root@UAEDXBPD /paradmin>cmviewcl
Permission denied to 127.0.0.1
cmviewcl: Cannot view the cluster configuration: No such file or directory.
Either this node is not configured in a cluster, user doesn't have
access to view the cluster configuration, or there is some obstacle
to viewing the configuration. Check the syslog file for more information.
For a list of possible causes, see the Serviceguard manual for cmviewcl.
root@UAEDXBPD /paradmin>

Note : Actually issue started after i issued command cmgetconf -c /tmp/out.Prior to this commands were working file and i got output for cmgetconf.

After entering command cmgetconf -c /tmp/out, hostname got changed to only 8 letters. Before i was around 16 letters.

Regatds
himacs

Re: cluster query

Manix — Thu, 20 Jan 2011 07:05:57 GMT

>>After entering command cmgetconf -c /tmp/out, hostname got changed to only 8 letters

i wonder hows that possible ..
please check the node name as given by "uname -a" & is it matching with the cluster.conf.ascii file & entries in /etc/hosts

node names / hostname is different

>>Permission denied to 127.0.0.1
>>Either cluster is not configured,

please check you are root user & in /etc/nsswitch.conf

the hosts entry are as as
hosts: files dns

try inetd -c

let me know if this helps.

Re: cluster query

himacs — Thu, 20 Jan 2011 07:22:40 GMT

Hi Manix,

Thanks for the response.

I changed the hostname back using sam and edited netconf file.And i changed hostname from command line using hostname command.Now issue resolved.cmviewcl working.But really i have no idea how hostname got changed.

Regards
himacs

Re: cluster query

kemo — Thu, 20 Jan 2011 07:28:46 GMT

Hostname length can be set with MAXHOSTNAMELEN as defined in . However, the node name, returned by uname, is not allowed to exceed 8 characters. The resulting confusion can wreak havoc on your system. It's far simpler to keep system names to 8 or fewer characters.

Re: cluster query

Manix — Thu, 20 Jan 2011 07:31:40 GMT

have you configures the cluster nodes with
hostnames in "cluster.conf.ascii" file
i believe there are node names ( yes never
exceeds the limits)

It`s possible some application did it or user.

Any error or log in "syslog.log" .it would be
good to trace it.

Thanks
Manix

Re: cluster query

kemo — Thu, 20 Jan 2011 07:32:38 GMT

I do recommend to change hostname to less than 8 and do the needful in the serviceguard side, actually this is a long process needs downtime as you need to rebuild the cluster in this case.

Re: cluster query

Ismail Azad — Thu, 20 Jan 2011 07:36:22 GMT

Hi,

Remember nodename and hostname are two different things and HP recommends that hostname and nodename be one and the same. For network configurations, hostname is used and for cluster configuration "nodenames" are used.

Just a thought.. Enabling long hostnames or UIDs might create a problem at times as the "long feature" might not be supported on the dependent subsystems and that is why at times sticking to the standard mode at times can be an advantage.

Regards
Ismail Azad

Re: cluster query

Manix — Thu, 20 Jan 2011 07:50:51 GMT

yes !! that makes lots of sense use "node names" for cluster configurations & generally
node names & host names are kept as same.

But if cluster is running with node names i believe host names can be changed on a fly
without cluster breakdown ,but need to check with what names applications are binded to.

Re: cluster query

Rita C Workman — Thu, 20 Jan 2011 13:48:23 GMT

Fix your hostname and nodename as folks as mentioned, to no more than 8 characters.

As for chaning the hostname, after cluster is up...
It is not just a matter of what you can do. It is guaranteeing that the cluster is up and running and can be modified in the future as needed. It looks like this is what himacs has run into. Somebody changed the hostname and now he wants to do something with the cluster, and can't.

Always keep things simple. Alway keep things uniform. Then things will always keep working.

Kindest regards,
Rita

Re: cluster query

Manix — Fri, 21 Jan 2011 07:31:59 GMT

Thanks Rita !!

so you mean to say that it`s not a good idea to
do "hosstnames" changes on fly even when cluster.conf has "node names " not the host name because of application & networking requirements.

Thanks
Manix

Re: cluster query

Benoy Daniel — Fri, 21 Jan 2011 09:56:15 GMT

Make sure you have the correct entry in /etc/inetd.conf file.

Re: cluster query

Stephen Doud — Fri, 21 Jan 2011 13:33:47 GMT

This issue has been answered several times - please search the forum using the string, "serviceguard permission denied"

Also, investigate the Managing Serviceguard manual section that describes how to configure files for hostname resolution for Serviceguard

Re: cluster query

Manix — Mon, 24 Jan 2011 08:05:10 GMT

Thanks Stephen ..this is must to read..

Title: HP-UX ServiceGuard Software - cmquerycl Failed with: "Permission denied to 127.0.0.1" and "Warning: Unable to determine local domain name ..."
Document ID: emr_na-c01058929-1

http://www13.itrc.hp.com/service/cki/docDisplay.do?docId=emr_na-c01058929-1&docLocale=en&admit=109447627+1295853439865+28353475

Thanks
Manix