La menera de comprobar que el grupo multicast de ganglia funciona en cada nodo es con Gstat.
[fernando@ui ~]$ clush -b -w @lustre:all -l root "gstat "
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mds[1-2],oss[01-03] (5)
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CLUSTER INFORMATION
Name: lustre
Hosts: 10
Gexec Hosts: 0
Dead Hosts: 0
Localtime: Tue Feb 5 13:18:14 2019
There are no hosts running gexec at this time
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oss[04-08] (5)
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CLUSTER INFORMATION
Name: lustre
Hosts: 1
Gexec Hosts: 0
Dead Hosts: 0
Localtime: Tue Feb 5 13:18:14 2019
Comprobaciones:
[fernando@ui ~]$ clush -b -w @lustre:all -l root "sestatus"
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mds[1-2],oss[01-08] (10)
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SELinux status: disabled
[fernando@ui ~]$ clush -b -w @lustre:all -l root 'firewall-cmd --state'
oss04: not running
[fernando@ui ~]$ clush -b -w @lustre:all -l root "netstat -gn|grep 239.6.8.89"
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oss[01-08] (8)
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enp7s0f0 1 239.6.8.89
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mds[1-2] (2)
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eno1 1 239.6.8.89
[fernando@ui ~]$ clush -b -w @lustre:all -l root "sudo netstat -np|grep 8649"
Comprobacionesentre dos nodos multicast :
Servidor multicast:
[feradmin@oss04 ~]$ socat STDIO UDP4-DATAGRAM:239.6.8.89:6666
#teclear por consola
Escucha cualquiera que pertenezca al grupo
[feradmin@oss06 ~]$ sudo tcpdump -i enp7s0f0 host 239.6.8.89
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on enp7s0f0, link-type EN10MB (Ethernet), capture size 262144 bytes
Solucion del Problema
El switch TOR del Sdei Tenia la WLAN configurada con IGMP_snooping, SOLO FUNCIONA si se deshabilita.