Re: [ldm-users] diagnosing problem when ldmping works one-way (not both ways)

• To: Donna Cote <d-cote@xxxxxxxx>
• Subject: Re: [ldm-users] diagnosing problem when ldmping works one-way (not both ways)
• From: Steve Emmerson <emmerson@xxxxxxxx>
• Date: Mon, 6 Jun 2016 10:42:47 -0600

Donna,

Use telnet(1) to verify that each host can contact the LDM port on the
other:

On Earthdata:

telnet curio 388

On Curio:

telnet earthdata 388

(You should use the fully-qualified hostnames for each to reduce DNS
issues). If one of them doesn't work and both LDM-s are running, then
something is blocking the TCP connection.

Regards,
Steve Emmerson

On Sun, Jun 5, 2016 at 1:41 PM, Donna Cote <d-cote@xxxxxxxx> wrote:

> I have recently started up an LDM server for the sole purpose of gathering
> and holding rtstats data for our relay, cluster and storage LDM systems.
>
> The new LDM is on our host called earthdata. Now, I can ssh, scp, and ping
> just fine between our systems but ldmping on any of our LDM servers gives
> me a "SVC_UNAVAIL" message.
>
> All of our LDM is version 6.12.14. I have checked the exec entry in the
> ldmd.conf file. I have checked the allow and request entries. I have
> restarted LDM on each system. Still, curoi - to - earthdata is
> "SVC_UNAVAIL" while earthdata - to - curoi is "RESPONDING" just fine. With
> the notifyme utility, I see no rtstats data getting to earthdata.
>
> Any ideas on what to check for and how I could fix this?
>
> Thanks,
> Donna
>
> > [ldm@curoi ~]$ ldmping earthdata
>
> > Jun 05 04:03:46 ulog INFO:      State    Elapsed Port   Remote_Host
>       rpc_stat
> > Jun 05 04:03:46 ulog INFO: Resolving earthdata to 128.194.165.79 took
> 0.000851 seconds
> > Jun 05 04:03:56 ulog ERROR: SVC_UNAVAIL  10.000997    0   earthdata
>  h_clnt_create(earthdata): Timed out while creating connection
> > Jun 05 04:04:21 ulog ERROR:  ADDRESSED   0.000002    0   earthdata
>  h_clnt_create(earthdata): Timed out while creating connection
> > ^C
>
> >
>
> > [ldm@curoi ~]$ grep -w earthdata etc/ldmd.conf
> > exec "rtstats -f ANY -h earthdata.tamu.edu"
> > allow ANY ^((earthdata)|(earthdata\.tamu\.edu))$
> > [ldm@curoi ~]$
>
>
> >
> >
>          ----------------------------------
>
>
> >
> > [ldm@earthdata ~]$ ldmping curoi
> > Jun 05 04:03:23 ulog INFO:      State    Elapsed Port   Remote_Host
>       rpc_stat
> > Jun 05 04:03:23 ulog INFO: Resolving curoi to 128.194.165.100 took
> 0.001789 seconds
> > Jun 05 04:03:23 ulog INFO: RESPONDING   0.004038  388   curoi
> > Jun 05 04:03:48 ulog INFO: RESPONDING   0.000335  388   curoi
> > ^C
> > >
> > > [ldm@earthdata ~]$ > grep curoi etc/ldmd.conf
> > > request ANY "^rtstats" curoi.tamu.edu
> > > allow ANY ^((curoi)|(curoi\.tamu\.edu))$
> > > [ldm@earthdata ~]$
>
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• Follow-Ups:
  • Re: [ldm-users] diagnosing problem when ldmping works one-way (not both ways)
    • From: Donna Cote

• References:
  • [ldm-users] diagnosing problem when ldmping works one-way (not both ways)
    • From: Donna Cote