topic Re: Two Node Cluster in Operating System - HP-UX

Two Node Cluster

Anubhav Dhingra — Sun, 23 Aug 2009 16:15:48 GMT

I am trying to configure a two node cluster running on HP-UX 11.23. while executing cmquerycl i am getting the following error message.

cmquerycl -v -n MBSVR1 -n MBSVR2
Warning: Unable to determine local domain name for MBSVR2
Gathering storage information
Unable to connect to node MBSVR1: I/O error
Unable to connect to node MBSVR2: I/O error
Gathering network information
Failed to gather configuration information.

with IP address instead of Hostname

cmquerycl -v -n 172.22.2.14 -n 172.22.2.15
Warning: Unable to determine local domain name for MBSVR2
Node 172.22.2.14 is refusing Serviceguard communication.
Please make sure that the proper security access is configured on node
172.22.2.14 through either file-based access (pre-A.11.16 version) or role-based
access (version A.11.16 or higher) and/or that the host name lookup
on node 172.22.2.14 resolves the IP address correctly.
Failed to gather configuration information.

more /etc/hosts
[24;1H [K## Configured using SAM by root on Mon Dec 17 16:24:12 2007
## Configured using SAM by root on Thu Jan 17 13:06:14 2008
# @(#)B11.23_LRhosts $Revision: 1.9.214.1 $ $Date: 96/10/08 13:20:01 $
#
# The form for each entry is:
#
#
# For example:
# 192.1.2.34 hpfcrm loghost
#
# See the hosts(4) manual page for more information.
# Note: The entries cannot be preceded by a space.
# The format described in this file is the correct format.
# The original Berkeley manual page contains an error in
# the format description.
#

127.0.0.1 localhost loopback
20.20.20.1 MBSVR1_HB
20.20.20.2 MBSVR2_HB
172.22.2.14 MBSVR1
172.22.2.15 MBSVR2
172.22.5.1 arusha arusha.twigabancorp.com
172.22.6.1 mwanza mwanza.twigabancorp.com
#

more /etc/.rhosts
#MBSVR1.twigabancorp.com
#MBSVR2.twigabancorp.com
#MBSVR2
#MBSVR1
+ +

more /etc/cmcluster/cmclnodelist
MBSVR1 root
MBSVR2 root
ping with hostname and IP works fine. and nslookup works fine.

I tried finding similar error messages on ITRC and could find similar scenario that relates me to rng kernel module. even these two nodes
rng module is unable to load.
i have tried through kcmodule and sam, but when system reboots it appears to have rng module unused instead of loaded.

We have MSA storage attached(SCSI) to these servers.

We had tested a basic package with test VG on this cluster some 7 months back, which was fine. we were trying the remove the old configuration from the both the nodes and deleted the cluster.conf and package configuration files as well. do we need to unistall and re-install service guard,.

Re: Two Node Cluster

Yogesh M Puranik — Sun, 23 Aug 2009 20:42:36 GMT

Hi,

It seems to be both nodes are not communication with each other.

Please check following files,

Assume that we have following configuration

- 1st Node name is â rx26-187â with IP â 16.118.112.91â
- 2nd Node name is â rx26-188â with IP â 16.118.112.92â
- Subnet mask for this network is 16.118.112.0
- Package IP we are going to us is 16.118.112.9

# vi /etc/hosts
16.118.112.91 rx26-187.usa.hp.com rx26-187
16.118.112.92 rx26-188.usa.hp.com rx26-188

# vi /.rhosts
rx26-187 root
rx26-188 root

# vi /etc/cmcluster/cmclnodelist
rx26-187 root
rx26-188 root

Rgds

Yogesh

Re: Two Node Cluster

Shan Sunny — Mon, 24 Aug 2009 03:35:45 GMT

Hi ,
Make sure that following lines in /etc/inetd.conf are un-hased.

auth stream tcp6 wait bin /usr/lbin/identd identd

hacl-probe stream tcp nowait root /opt/cmom/lbin/cmomd /opt/cmom/lbin/cmomd -f /var/opt/cmom/cmomd.log -r /var/opt/cmom

hacl-cfg dgram udp wait root /usr/lbin/cmclconfd cmclconfd -p

hacl-cfg stream tcp nowait root /usr/lbin/cmclconfd cmclconfd -c

Run inetd -c command after editing /etc/inetd.conf file

Your Points are highly appreciated.

Regards,
Shan

Re: Two Node Cluster

Vivek Bhatia — Mon, 24 Aug 2009 05:20:01 GMT

Hi Abhinav,

Have a look at the links below to troubleshoot your current error.

http://www.docs.hp.com/en/B3935-90078/ch01s04.html

http://bizsupport1.austin.hp.com/bizsupport/TechSupport/Document.jsp?lang=en&cc=us&taskId=110&prodSeriesId=3203314&prodTypeId=18964&objectID=c01680756

1.Which version of SG are you using?

Thanks
Vivek Bhatia

Re: Two Node Cluster

Stephen Doud — Mon, 24 Aug 2009 10:29:37 GMT

If you have a support contract with HP, search the ITRC database for document emr_na-c01284624-2. Serviceguard needs the rng driver.

Re: Two Node Cluster

Anubhav Dhingra — Thu, 27 Aug 2009 18:19:52 GMT

Hi All,

Thanx kernel on these servers were messed up, so decided to re-ignite. Cluster was up.