I have a question regarding the PHP web code of Ganglia:
My setup looks like that:
* I have one Grid and several Clusters.
* Each Cluster has between 10-250 nodes, all running on AIX LPARs
(but the question is independent of the OS).
* I have clustered on a logical level, i.e., not according to the
different hardware systems but for instance, all SAP systems, all
TSM systems etc.
* I have lots of additional metrics, provided via a C-DSO.
* One of the additional metrics is a system-identifier, i.e., a
hardware identifier that I want to use to identify the hardware
that each LPAR is running on.
Now in addition to the logical view I want to introduce a "physical
view", i.e., a view of all LPARs running on a specific system with a
certain hardware identifier. This is were my illiteracy regarding PHP
comes into play.
Basically, I want to have a list of ALL Ganglia nodes so that I can loop
over and group them according to their hardware identifier.
I was able to accomplish someting in cluster_view.php with the following
code snippet but have failed miserably so far in meta_view.php.
----------------------------------------------------------------
$sysids = array();
$sysid_count = 0;
foreach ($metrics as $host => $val)
{
if (isset( $val["serial_num"]['VAL'] ))
{
$id = $val["serial_num"]['VAL'];
if (! in_array( $id, $sysids ))
{
$sysids[$sysid_count] = $id;
$sysid_count++;
}
}
}
sort( $sysids );
$cv = @fopen("/tmp/cv.txt","w");
foreach ($hosts_up as $host => $val)
{
fputs($cv,"$host\n");
}
fputs($cv,"=================================================\n");
fputs($cv,"sysid_count = $sysid_count\n");
fputs($cv,"=================================================\n");
foreach ($sysids as $id)
{
fputs($cv,"$id\n");
}
fputs($cv,"=================================================\n");
foreach ($sysids as $id)
{
fputs($cv,"-------> $id\n");
foreach ($hosts_up as $host => $h)
{
if ( $metrics[$host]["serial_num"]['VAL'] == $id )
{
fputs($cv,"$host\n");
}
}
}
fclose($cv);
----------------------------------------------------------------
Any help/hints regarding how a loop over all Ganglia nodes can be
accomplished in metaview.php would be highly welcome. Thanks.
Regards,
Michael
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