joe-

you don't need to install ganglia-monitor-core-lib on any machine unless 
you are going to compile gexec from source.  the gexec compilation 
requires libganglia but it statically compiles against libganglia.a.

as far as the connection error.  that means that gexec(d) is not installed 
on virtue OR is installed but not responding.  gexecd is an (x)inetd 
daemon so it's possible that xinetd is either down or not working 
correctly on virtue.

check the syslog on virtue for errors.  make sure xinetd is installed and 
working. 

gexecd by default binds to port 2875/tcp so a "telnet virtue 2875" will 
let you know if the daemon on virtue is responding or not.

good luck.. let me know if this helps.

-matt

Today, Joe Griffin wrote forth saying...

> Hello,
> 
> As you can see, I am a newbie to Ganglia.  I installed:
> 
> authd, libe, ganglia-monitor-core-lib, and gexec.
> 
> The error I am getting is:
> 
> virtue:/scratch/gang/gexec-0.3.3# gexec -n 0 uname
> Could not connect to virtue (192.168.3.1)
> 
> I can "ssh" though:
> virtue:/scratch/gang/gexec-0.3.3# ssh virtue date
> Thu May  2 11:18:21 PDT 2002
> 
> Can someone please tell me what I need to do?
> 
> I am not sure what to set GEXEC_SVRS to.
> I have a 5 node cluster (headnode:virtue)
> other nodes msc[1-4].
> 
> I tried setting GEXEC_SVRS to "virtue" and "msc1"
> but got the same error.  I also looked in the
> archives:
> https://sourceforge.net/mailarchive/forum.php?max_rows=25&style=ultimate&offset=25&forum_id=7186
> 
> But did not see anything.
> 
> When I rebuilt gexec, I tried w/ and w/o --enable-ganglia.
> 
> I am running on:
> Pentium III's
> kernel: 2.4.6
> glibc 2.2.3
> openssh 3.1
> openssl 0.9.6c
> libe 0.2.0
> authd 0.2.0
> ganglia-monitor-core-lib 2.3.0
> gexec 0.3.3
> 
> In summary, ssh works, but gexec does not.
> I did all of the openssl type commands:
> virtue:/scratch/gang# ls -l /etc/auth*
> -rw-------    1 root     root          497 May  1 12:47 /etc/auth_priv.pem
> -rw-r--r--    1 root     root          182 May  1 12:47 /etc/auth_pub.pem
> 
> 
> Thanks,
> Joe
> 
> 
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