I forgot to post that I found the code in print_bad_nodes in gexec.c:
static void print_bad_nodes(int *bad_nodes, char **ips)
{
char host[1024];
char *ip;
int bad_node;
int bad_nodes_copy[GEXEC_MAX_NPROCS];
bitmask_copy(bad_nodes_copy, bad_nodes, GEXEC_MAX_NPROCS);
while ((bad_node = bitmask_ffs(bad_nodes_copy, GEXEC_MAX_NPROCS)) != -1) {
ip = ips[bad_node];
net_iptohost(ip, host, 1024);
printf("Could not connect to %s (%s)\n", host, ip);
bitmask_clr(bad_nodes_copy, GEXEC_MAX_NPROCS, bad_node);
}
}
Is this routine called for ALL nodes, and then the error is
trapped? Or is this routine ONLY called for bad nodes?
In other words, should I look at bitmask_ffs or should
I look why this was called in the first place? I think
it is always called.
Thanks in advance,
Joe
Joe Griffin wrote:
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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