[Beowulf] ganglia on CentOS 8?

[Jonathan Engwall]

About getex:
GNU nano 4.6               /usr/local/etc/gmond.conf
 Modified
/* This configuration is as close to 2.5.x default behavior as possible
   The values closely match ./gmond/metric.h definitions in 2.5.x */
globals {
  daemonize = yes
  setuid = yes
  user = ganglia
  debug_level = 0
  max_udp_msg_len = 1472
  mute = no
  deaf = no
  allow_extra_data = yes
  host_dmax = 86400 /*secs. Expires (removes from web interface) hosts in 1
day>
  host_tmax = 20 /*secs */
  cleanup_threshold = 300 /*secs */
  gexec = no
              <=========Here if that helps
Though not exactly what you are doing, bringing up the services:
#!/bin/bash

service gmond stop
service gmetad stop
nginx
nginx -s reopen
nginx -s reload
service gmetad start
service gmond start
service ipfw3 stop
service ipfw3 start

On Wed, Apr 1, 2020 at 12:30 PM Jonathan Engwall <
engwalljonathanthereal at gmail.com> wrote:

> Gmond is reads information from gmetad which reads from the tcp udp, so I
> imagine you need to worry about the web side of it- openning the udp at
> least. I am trying something like this, using my phone right now:
>
> ipfw add state udp 0.0.0.0:8649
>
> But Nagios will be part of serving a web page though. If you don't want
> that, don't worry about it.
>
> systemctc status gmond gives you red?
>
> BSD automatically enables gmond and gmetad on startup. You should have a
> hidden file to handle this. You must match the BSD file structure. Why
> Ubuntu will run what Centos will not, I can't say. SourceForge docs are
> written for debian.
>
> On Wed, Apr 1, 2020, 12:03 PM David Mathog <mathog at caltech.edu> wrote:
>
>> I forgot to mention that on CentOS 8 the gmond from ganglia 3.7.2-31 does
>> share gexec status, CPU, load, etc. with the Ubuntu gmond, but 3.7.2-24
>> does not.  For the older version there is a line for the CentOS 8 host in
>> a gstat query of the Ubuntu server, but all the values were 0 and gexec
>> status was "OFF" even though it was configured "ON".  Even though that
>> most recent gmond version shares information with the other gmond on
>> Ubuntu it still will not report that information to any gstat.
>>
>> There are packages for "zabbix" and "nagios" available, but not "icinga".
>> Presumably those work. They are both massive overkill as I only use
>> gmond and gstat in ganglia.  Which of those two other monitoring systems
>> is simplest/lightest?  At first glance, they both look a lot more
>> complicated
>> than ganglia.
>>
>> Regards,
>>
>> David Mathog
>> mathog at caltech.edu
>>
>>
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