The managemnet nodes run RHEL 7.1 ppc64 on an IBM PowerVM LPAR. And all the compute nodes are running RHEL 7.1 ppc64 as well. Check below for the version of xCAT.
[root@c910f02c03p27 ~]# rpm -qa | grep -i xCAT
xCAT-genesis-base-ppc64-2.9-snap201410130243.noarch
xCAT-2.9.1-snap201503152156.ppc64
perl-xCAT-2.9.1-snap201503152156.noarch
xCAT-buildkit-2.9.1-snap201503152156.noarch
conserver-xcat-8.1.16-10.ppc64
ipmitool-xcat-1.8.11-3.ppc64
xCAT-IBMhpc-2.9-snap201411170009.noarch
grub2-xcat-2.02-0.16.build17.xcat.noarch
xCAT-genesis-scripts-ppc64-2.9.1-snap201503152156.noarch
xCAT-server-2.9.1-snap201503152156.noarch
xCAT-client-2.9.1-snap201503152156.noarch
After the compute nodes were booted, the nodestat command should output sshd''. This feature worked against RHEL 6 and prior version of RHEL. But now, the state remainedboot'' after the compute nodes were booted. Which is not consist with prior versoin of xCAT.
[root@c910f02c03p27 ~]# nodestat f02c02compute,-c910f02c02p31 | xcoll
====================================
c910f02c02p30,c910f02c02p29,c910f02c02p24,c910f02c02p19,c910f02c02p23,c910f02c02p13,c910f02c02p06,c910f02c02p22,c910f02c02p04,c910f02c02p16,c910f02c02p12,c910f02c02p27,c910f02c02p17,c910f02c02p14,c910f02c02p20,c910f02c02p10,c910f02c02p25,c910f02c02p18,c910f02c02p03,c910f02c02p15,c910f02c02p26,c910f02c02p07,c910f02c02p08,c910f02c02p28,c910f02c02p09,c910f02c02p21,c910f02c02p05,c910f02c02p02,c910f02c02p11
====================================
boot
[root@c910f02c03p27 ~]# xdsh f02c02compute,-c910f02c02p31 'cat /etc/redhat-release' | xcoll
====================================
c910f02c02p30,c910f02c02p29,c910f02c02p24,c910f02c02p19,c910f02c02p23,c910f02c02p13,c910f02c02p06,c910f02c02p22,c910f02c02p04,c910f02c02p16,c910f02c02p12,c910f02c02p27,c910f02c02p17,c910f02c02p14,c910f02c02p20,c910f02c02p10,c910f02c02p25,c910f02c02p18,c910f02c02p03,c910f02c02p15,c910f02c02p26,c910f02c02p07,c910f02c02p08,c910f02c02p28,c910f02c02p09,c910f02c02p21,c910f02c02p05,c910f02c02p02,c910f02c02p11
====================================
Red Hat Enterprise Linux Server release 7.1 (Maipo)
I have rhel7.1 ppc64 system with xcat 2.10 release. the compute nodes are booted with sshd status. looks like you have xcat 2.9.1 release.
lsxcatd -a
Version 2.10 (git commit cfd4d88a20ffa2b625b37e01f435cd03f860723c, built Tue Jun 23 11:50:48 EDT 2015)
nodestat compute | xcoll
====================================
c910f02c06p19,c910f02c06p20,c910f02c06p22
====================================
sshd
Gong jie: Can u try this with current xCAT 2.10 release?