System refusing to allow remote connections

[David Greenhow]

Hi.

My HP-UX 11.11 box seems to refusing all remote connections, regardless of the type of connection.

This is casing major problems with our oracle suite.

Can anyone answer the following:
1) if conections are refused is this logged anywhere?

2) where are the right places to look for this kind of fault?

3) anything else that might help stear me in the right direction.

The problem is so bad, that when i try a cmviewcl from the other side of the cluster its returns the following error:
Error: Permission denied to 127.0.0.1
cmviewcl : Cannot view the cluster configuration.
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.

Any help would be greatly appreciated.
cheers

[Prashanth.D.S]

Hi David,

As you are aware there may be numerous reasons for the network failure..

1.Check if the inetd is working fine.
2.Were there any changes made recently?
3.You can get more information from syslog (/var/adm/syslog/syslog.log)
4.Was there any reboot or TOC done on this server ?


Check the syslog for any error message and let us know we might be able to help you out..

Best Regards,
Prashanth

[Bill Hassell]

Start by eliminating a DNS failure -- test using nslookup for a local hostname and then an Internet node like hp.com If this is OK, eliminate router problems by using ping and then telnet between two machines on the same subnet. If this is OK, you have a router failure. You should always check /var/adm/syslog/syslog.log for major problems.

[David Greenhow]

thanks for the replies.
the syslog has nothing realting to this in it and DNS appears to be working fine.

I can ping any name and it resolves correctly.

Is there are any restrictions that can be set on the box that i can check?

[David Greenhow]

sorry just to clarify:
1) have restarted inetd- its works fine
2) no changes
3) nothing of any use
4) i have rebooted, but it came back ok.

cheers

[Prashanth.D.S]

Hi David,

Have you tried doing cmqeurycl ? Do you get any error message ?

# cmquerycl -n [nodename]

Can you check the /etc/inetd.conf & /etc/services for necessary entries of cluster daemons

There may be many other reasons for this issue only step by step troubleshooting can confirm the exact cause.

Best Regards,
Prashanth

[John_Hancock]

Just a long shot here - but you have not run out of disk space on say root for instance?