[Beowulf] ganglia on CentOS 8?

[Jonathan Engwall]

Even to use the internet I have to allow tcp out.
Is Ubuntu allowed out on 8649?

On Thu, Apr 2, 2020, 11:39 AM Fred Youhanaie <fly at anydata.co.uk> wrote:

> One thing that come to my mind is selinux. Is it enabled and enforcing?
>
> getenforce # check status
> setenforce 0 # to set to permissive, if enforcing
>
> Cheers,
> Fred
>
> On 02/04/2020 19:23, David Mathog wrote:
> >
> >
> > On Wed, 1 Apr 2020, Jonathan Engwall wrote:
> >
> >> About getex:GNU nano 4.6               /usr/local/etc/gmond.conf
> >
> > Values are the same other then gexec.  Swapping that doesn't resolve the
> issue that no hosts are reported.
> >
> >> 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
> >
> > It is all started as far as systemctl is concerned:
> >
> > systemctl status gmond.service
> > ● gmond.service - Ganglia Meta Daemon
> >     Loaded: loaded (/usr/lib/systemd/system/gmond.service; enabled;
> vendor preset: disabled)
> >     Active: active (running) since Thu 2020-04-02 11:16:14 PDT; 2min 18s
> ago
> >    Process: 3770 ExecStart=/usr/sbin/gmond (code=exited,
> status=0/SUCCESS)
> >   Main PID: 3771 (gmond)
> >      Tasks: 2 (limit: 26213)
> >     Memory: 2.0M
> >     CGroup: /system.slice/gmond.service
> >             └─3771 /usr/sbin/gmond
> >
> > Apr 02 11:16:14 poweredge.cluster systemd[1]: Starting Ganglia Meta
> Daemon...
> > Apr 02 11:16:14 poweredge.cluster systemd[1]: Started Ganglia Meta
> Daemon.
> > [root at poweredge ganglia]# systemctl status gmetad.service
> > ● gmetad.service - Ganglia Meta Daemon
> >     Loaded: loaded (/usr/lib/systemd/system/gmetad.service; enabled;
> vendor preset: disabled)
> >     Active: active (running) since Thu 2020-04-02 11:12:33 PDT; 6min ago
> >   Main PID: 3659 (gmetad)
> >      Tasks: 9 (limit: 26213)
> >     Memory: 3.0M
> >     CGroup: /system.slice/gmetad.service
> >             └─3659 /usr/sbin/gmetad -d 1
> >
> > Apr 02 11:12:33 poweredge.cluster systemd[1]: Started Ganglia Meta
> Daemon.
> > Apr 02 11:12:33 poweredge.cluster gmetad[3659]: Sources are ...
> > Apr 02 11:12:33 poweredge.cluster gmetad[3659]: Source: [my cluster,
> step 15] has 1 sources
> > Apr 02 11:12:33 poweredge.cluster gmetad[3659]:         127.0.0.1
> > Apr 02 11:12:33 poweredge.cluster gmetad[3659]: Data thread
> 139734408959744 is monitoring [my cluster] data sou>
> > Apr 02 11:12:33 poweredge.cluster gmetad[3659]:         127.0.0.1
> >
> > I did just notice though that /var/lib/ganglia/rrds is NOT populated on
> the CentOS 8 system, whereas it is on my Ubuntu laptop.  Also there is
> something peculiar going on with the network, because
> > even though iptables is not running anywhere the gmond/gmetad ports on
> the CO8 system are not visible from the Ubuntu system, but in the reverse
> direction they are.
> >
> > A thread on this problem has been started here:
> >
> > https://forums.centos.org/viewtopic.php?f=54&t=73893
> >
> > Regards,
> >
> > David Mathog
> > mathog at caltech.edu
> >
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