topic Re: tcp/ip telnet issue in Operating System - OpenVMS

tcp/ip telnet issue

rick agostino — Thu, 06 Nov 2008 22:45:26 GMT

I currently have an issue with a node where I cannot to itself or to any other node.

The following error appears when trying to telnet out or to itself

%TELNET-E-IVHOST, Invalid or unknown host localhost
-TCPIP-W-EAI_AGAIN, temporary failure

The strange thing is I can telnet into the box from outside.

The node was added into an existing cluster so cannot see this issue being a TCP/IP or O/S version/patch issue.

Any ideas????

Re: tcp/ip telnet issue

Steven Schweda — Thu, 06 Nov 2008 23:03:11 GMT

> [...] Invalid or unknown host localhost

So, what does "tcpip show host localhost"
say? Around here:

ALP $ tcpip show host localhost

LOCAL database

Host address Host name

127.0.0.1 LOCALHOST, localhost, LOOPBACK, me

At least some of that should be there. (The
"me" part is optional.)

Re: tcp/ip telnet issue

rick agostino — Thu, 06 Nov 2008 23:06:07 GMT

LOCAL database

Host address Host name

127.0.0.1 LOCALHOST, localhost

Re: tcp/ip telnet issue

marsh_1 — Fri, 07 Nov 2008 10:58:24 GMT

rick,

what version of vms and ip stack is this ?
have any changes been made recently and does it work with an ip address as opposed to a host name ?

Re: tcp/ip telnet issue

Hoff — Fri, 07 Nov 2008 16:27:54 GMT

IP stack and version and OpenVMS architecture and version?

Could you elaborate on the cluster environment and on how the new system was added to the cluster?

Was the particular IP stack configured subsequent to the OpenVMS and (it looks like) TCP/IP Services installation, and was the telnet client started?

Forgetting to invoke TCPIP$CONFIG (assuming V5.0 or later of TCP/IP Services) and adding the required clients and servers causes weird errors, for instance.

Re: tcp/ip telnet issue

Martin P.J. Zinser — Fri, 07 Nov 2008 17:57:44 GMT

Have you tried skipping the name resolution part, i.e. not "telnet localhost" but telnet 127.0.0.1 (or any other address on your network with a working telnet server).

Greetings, Martin

Re: tcp/ip telnet issue

rick agostino — Sun, 09 Nov 2008 21:55:04 GMT

Running OpenVMS V7.3-2 and HP TCP/IP Services for OpenVMS Alpha Version V5.4 ECO 6

Cannot telnet to IP address or Hostname.

The system was added to the cluster via sys$manager:cluster_config procedure.

IP stack was configured using sys$manager:tcpip$config and TELNET is enabled.

cannot telnet "localhost" or 127.0.0.1

telnet localhost
%TELNET-E-IVHOST, Invalid or unknown host localhost
-TCPIP-W-EAI_AGAIN, temporary failure

telnet 127.0.0.1
%TELNET-E-IVHOST, Invalid or unknown host 127.0.0.1
-TCPIP-W-EAI_AGAIN, temporary failure

tcpip show host localhost

LOCAL database

Host address Host name

127.0.0.1 LOCALHOST, localhost

Re: tcp/ip telnet issue

marsh_1 — Sun, 09 Nov 2008 22:02:31 GMT

rick,

do you have tcpip$inet_host defined and a corresponding entry in the host table ?

Re: tcp/ip telnet issue

marsh_1 — Sun, 09 Nov 2008 22:05:14 GMT

rick,

have any of the interfaces been reconfigured recently ?

Re: tcp/ip telnet issue

rick agostino — Sun, 09 Nov 2008 22:18:21 GMT

Mark,

yes logical exists and entry is in the host table

TCPIP$INET_HOST" = "HTV009"(LNM$SYSTEM_TABLE)

10.8.200.58 HTV009

The server is a new machine added to exiting cluster so all interfaces were configured after cluster config was completed and server booted.

Re: tcp/ip telnet issue

marsh_1 — Sun, 09 Nov 2008 22:35:55 GMT

rick,

any other ip services affected such as ftp ?
is it possible to rename/recreate the host table ? this sort of error is sometimes caused by corruption in the host table usually caused by the stuff hoff was alluding to.
is routing the same as the other nodes ?

Re: tcp/ip telnet issue

Hoff — Sun, 09 Nov 2008 22:51:22 GMT

Expediency: RENAME your TCPIP$*.DAT files out of the way (or use BACKUP to copy the files into a saveset somewhere and delete the originals, or...), and re-invoke TCPIP$CONFIG, and recreate your databases and your configuration.

Re: tcp/ip telnet issue

STEPHEN CONWAY_1 — Tue, 11 Nov 2008 21:16:50 GMT

> Running OpenVMS V7.3-2 and HP TCP/IP
> Services for OpenVMS Alpha Version
> V5.4 ECO 6

That version of TCP/IP Services suffers
from a BUG, and the symptoms of the
bug are exactly what you are seeing.
The system in question is not running
the BIND server, correct?

You need to either get the patch for
this specific problem, or just turn
on the BIND server. Or update to version
V5.4-ECO7

Steve

Re: tcp/ip telnet issue

STEPHEN CONWAY_1 — Tue, 11 Nov 2008 21:23:27 GMT

Wait I meant the BIND RESOLVER, not the
Bind server! I always get those puppies backwards. Don't turn the Bind Server on!

Steve