Redhat route InfiniBand problem

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1














I have a system (HPC) have



  • 1 headnode (192.168.2.2)


  • 10 node and (192.168.245-254)


  • 1 NFS server (192.168.2.244).


My headnode can't ping to NFS server but from NFS server I can ping to headnode.



I already disable firewall in 2 PC but it still didn't work.



HeadNode
route -n (192.168.2.2)



[root@cluster ~]# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
172.16.39.0 0.0.0.0 255.255.255.0 U 0 0 0 vmnet1
192.168.2.0 0.0.0.0 255.255.255.0 U 0 0 0 ib0
192.168.2.0 0.0.0.0 255.255.255.0 U 0 0 0 em1
172.16.112.0 0.0.0.0 255.255.255.0 U 0 0 0 vmnet8
10.10.41.0 0.0.0.0 255.255.255.0 U 0 0 0 em2
192.168.122.0 0.0.0.0 255.255.255.0 U 0 0 0 virbr0
10.10.10.0 0.0.0.0 255.255.254.0 U 0 0 0 pem3
169.254.0.0 0.0.0.0 255.255.0.0 U 1006 0 0 ib0
169.254.0.0 0.0.0.0 255.255.0.0 U 1030 0 0 em1
0.0.0.0 10.10.10.1 0.0.0.0 UG 0 0 0 pem3


arp -a



[root@cluster ~]# arp -a
compute-0-5.local (192.168.2.249) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0
? (10.10.41.1) at <incomplete> on em2
compute-0-0.local (192.168.2.254) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0
compute-0-3.local (192.168.2.251) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0
compute-0-4.local (192.168.2.250) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0
compute-0-7.local (192.168.2.247) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0
? (10.10.10.218) at f8:28:19:1f:22:33 [ether] on pem3
? (10.10.11.17) at 88:e9:fe:70:25:26 [ether] on pem3
compute-0-6.local (192.168.2.248) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0
compute-0-1.local (192.168.2.253) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0
? (10.10.10.47) at c0:cb:38:3e:72:6d [ether] on pem3
? (10.10.10.1) at 1c:df:0f:b7:11:3f [ether] on pem3
compute-0-2.local (192.168.2.252) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0
rockscluster-nfs (192.168.2.244) at <incomplete> on ib0


It can't connect to IP 192.168.2.244



NFS server



route -n



[root@rockscluster-nfs ~]# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 10.10.40.1 0.0.0.0 UG 100 0 0 em1
10.10.40.1 0.0.0.0 255.255.255.255 UH 100 0 0 em1
10.10.41.0 0.0.0.0 255.255.255.0 U 100 0 0 em1
192.168.2.0 0.0.0.0 255.255.255.0 U 150 0 0 ib0
192.168.122.0 0.0.0.0 255.255.255.0 U 0 0 0 virbr0


arp -a



[root@rockscluster-nfs ~]# arp -a
? (192.168.2.250) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0
gateway (10.10.40.1) at <incomplete> on em1
? (192.168.2.253) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0
? (192.168.2.248) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0
? (10.10.41.149) at <incomplete> on em1
? (192.168.2.251) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0
? (10.10.41.223) at a0:48:1c:df:f8:86 [ether] on em1
? (10.10.41.119) at 80:18:44:e6:48:9d [ether] on em1
? (10.10.41.1) at <incomplete> on em1
? (192.168.2.254) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0
? (10.10.11.209) at d8:9e:f3:18:39:26 [ether] on em1
? (192.168.2.249) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0
? (192.168.2.252) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0
? (192.168.2.247) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0
? (192.168.2.2) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0





linux rhel route







share|improve this question



















  • 2




    I can see two network cards using the same IP LAN (ib0 and em1 on same 192.168.2.0/24). That's usually not done, because this can cause "arp flux" issues at best, or worse (if the cards aren't actually seing each others). Also, when a question is put on hold, that's to ask you yo clarify it. This question is probably related to unix.stackexchange.com/questions/490923/… , so answerers can get a better picture.
    – A.B
    Dec 27 '18 at 9:49
















1














I have a system (HPC) have



  • 1 headnode (192.168.2.2)


  • 10 node and (192.168.245-254)


  • 1 NFS server (192.168.2.244).


My headnode can't ping to NFS server but from NFS server I can ping to headnode.



I already disable firewall in 2 PC but it still didn't work.



HeadNode
route -n (192.168.2.2)



[root@cluster ~]# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
172.16.39.0 0.0.0.0 255.255.255.0 U 0 0 0 vmnet1
192.168.2.0 0.0.0.0 255.255.255.0 U 0 0 0 ib0
192.168.2.0 0.0.0.0 255.255.255.0 U 0 0 0 em1
172.16.112.0 0.0.0.0 255.255.255.0 U 0 0 0 vmnet8
10.10.41.0 0.0.0.0 255.255.255.0 U 0 0 0 em2
192.168.122.0 0.0.0.0 255.255.255.0 U 0 0 0 virbr0
10.10.10.0 0.0.0.0 255.255.254.0 U 0 0 0 pem3
169.254.0.0 0.0.0.0 255.255.0.0 U 1006 0 0 ib0
169.254.0.0 0.0.0.0 255.255.0.0 U 1030 0 0 em1
0.0.0.0 10.10.10.1 0.0.0.0 UG 0 0 0 pem3


arp -a



[root@cluster ~]# arp -a
compute-0-5.local (192.168.2.249) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0
? (10.10.41.1) at <incomplete> on em2
compute-0-0.local (192.168.2.254) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0
compute-0-3.local (192.168.2.251) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0
compute-0-4.local (192.168.2.250) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0
compute-0-7.local (192.168.2.247) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0
? (10.10.10.218) at f8:28:19:1f:22:33 [ether] on pem3
? (10.10.11.17) at 88:e9:fe:70:25:26 [ether] on pem3
compute-0-6.local (192.168.2.248) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0
compute-0-1.local (192.168.2.253) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0
? (10.10.10.47) at c0:cb:38:3e:72:6d [ether] on pem3
? (10.10.10.1) at 1c:df:0f:b7:11:3f [ether] on pem3
compute-0-2.local (192.168.2.252) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0
rockscluster-nfs (192.168.2.244) at <incomplete> on ib0


It can't connect to IP 192.168.2.244



NFS server



route -n



[root@rockscluster-nfs ~]# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 10.10.40.1 0.0.0.0 UG 100 0 0 em1
10.10.40.1 0.0.0.0 255.255.255.255 UH 100 0 0 em1
10.10.41.0 0.0.0.0 255.255.255.0 U 100 0 0 em1
192.168.2.0 0.0.0.0 255.255.255.0 U 150 0 0 ib0
192.168.122.0 0.0.0.0 255.255.255.0 U 0 0 0 virbr0


arp -a



[root@rockscluster-nfs ~]# arp -a
? (192.168.2.250) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0
gateway (10.10.40.1) at <incomplete> on em1
? (192.168.2.253) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0
? (192.168.2.248) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0
? (10.10.41.149) at <incomplete> on em1
? (192.168.2.251) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0
? (10.10.41.223) at a0:48:1c:df:f8:86 [ether] on em1
? (10.10.41.119) at 80:18:44:e6:48:9d [ether] on em1
? (10.10.41.1) at <incomplete> on em1
? (192.168.2.254) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0
? (10.10.11.209) at d8:9e:f3:18:39:26 [ether] on em1
? (192.168.2.249) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0
? (192.168.2.252) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0
? (192.168.2.247) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0
? (192.168.2.2) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0





linux rhel route







share|improve this question



















  • 2




    I can see two network cards using the same IP LAN (ib0 and em1 on same 192.168.2.0/24). That's usually not done, because this can cause "arp flux" issues at best, or worse (if the cards aren't actually seing each others). Also, when a question is put on hold, that's to ask you yo clarify it. This question is probably related to unix.stackexchange.com/questions/490923/… , so answerers can get a better picture.
    – A.B
    Dec 27 '18 at 9:49














1












1








1







I have a system (HPC) have



  • 1 headnode (192.168.2.2)


  • 10 node and (192.168.245-254)


  • 1 NFS server (192.168.2.244).


My headnode can't ping to NFS server but from NFS server I can ping to headnode.



I already disable firewall in 2 PC but it still didn't work.



HeadNode
route -n (192.168.2.2)



[root@cluster ~]# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
172.16.39.0 0.0.0.0 255.255.255.0 U 0 0 0 vmnet1
192.168.2.0 0.0.0.0 255.255.255.0 U 0 0 0 ib0
192.168.2.0 0.0.0.0 255.255.255.0 U 0 0 0 em1
172.16.112.0 0.0.0.0 255.255.255.0 U 0 0 0 vmnet8
10.10.41.0 0.0.0.0 255.255.255.0 U 0 0 0 em2
192.168.122.0 0.0.0.0 255.255.255.0 U 0 0 0 virbr0
10.10.10.0 0.0.0.0 255.255.254.0 U 0 0 0 pem3
169.254.0.0 0.0.0.0 255.255.0.0 U 1006 0 0 ib0
169.254.0.0 0.0.0.0 255.255.0.0 U 1030 0 0 em1
0.0.0.0 10.10.10.1 0.0.0.0 UG 0 0 0 pem3


arp -a



[root@cluster ~]# arp -a
compute-0-5.local (192.168.2.249) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0
? (10.10.41.1) at <incomplete> on em2
compute-0-0.local (192.168.2.254) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0
compute-0-3.local (192.168.2.251) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0
compute-0-4.local (192.168.2.250) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0
compute-0-7.local (192.168.2.247) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0
? (10.10.10.218) at f8:28:19:1f:22:33 [ether] on pem3
? (10.10.11.17) at 88:e9:fe:70:25:26 [ether] on pem3
compute-0-6.local (192.168.2.248) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0
compute-0-1.local (192.168.2.253) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0
? (10.10.10.47) at c0:cb:38:3e:72:6d [ether] on pem3
? (10.10.10.1) at 1c:df:0f:b7:11:3f [ether] on pem3
compute-0-2.local (192.168.2.252) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0
rockscluster-nfs (192.168.2.244) at <incomplete> on ib0


It can't connect to IP 192.168.2.244



NFS server



route -n



[root@rockscluster-nfs ~]# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 10.10.40.1 0.0.0.0 UG 100 0 0 em1
10.10.40.1 0.0.0.0 255.255.255.255 UH 100 0 0 em1
10.10.41.0 0.0.0.0 255.255.255.0 U 100 0 0 em1
192.168.2.0 0.0.0.0 255.255.255.0 U 150 0 0 ib0
192.168.122.0 0.0.0.0 255.255.255.0 U 0 0 0 virbr0


arp -a



[root@rockscluster-nfs ~]# arp -a
? (192.168.2.250) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0
gateway (10.10.40.1) at <incomplete> on em1
? (192.168.2.253) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0
? (192.168.2.248) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0
? (10.10.41.149) at <incomplete> on em1
? (192.168.2.251) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0
? (10.10.41.223) at a0:48:1c:df:f8:86 [ether] on em1
? (10.10.41.119) at 80:18:44:e6:48:9d [ether] on em1
? (10.10.41.1) at <incomplete> on em1
? (192.168.2.254) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0
? (10.10.11.209) at d8:9e:f3:18:39:26 [ether] on em1
? (192.168.2.249) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0
? (192.168.2.252) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0
? (192.168.2.247) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0
? (192.168.2.2) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0





linux rhel route







share|improve this question















I have a system (HPC) have



  • 1 headnode (192.168.2.2)


  • 10 node and (192.168.245-254)


  • 1 NFS server (192.168.2.244).


My headnode can't ping to NFS server but from NFS server I can ping to headnode.



I already disable firewall in 2 PC but it still didn't work.



HeadNode
route -n (192.168.2.2)



[root@cluster ~]# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
172.16.39.0 0.0.0.0 255.255.255.0 U 0 0 0 vmnet1
192.168.2.0 0.0.0.0 255.255.255.0 U 0 0 0 ib0
192.168.2.0 0.0.0.0 255.255.255.0 U 0 0 0 em1
172.16.112.0 0.0.0.0 255.255.255.0 U 0 0 0 vmnet8
10.10.41.0 0.0.0.0 255.255.255.0 U 0 0 0 em2
192.168.122.0 0.0.0.0 255.255.255.0 U 0 0 0 virbr0
10.10.10.0 0.0.0.0 255.255.254.0 U 0 0 0 pem3
169.254.0.0 0.0.0.0 255.255.0.0 U 1006 0 0 ib0
169.254.0.0 0.0.0.0 255.255.0.0 U 1030 0 0 em1
0.0.0.0 10.10.10.1 0.0.0.0 UG 0 0 0 pem3


arp -a



[root@cluster ~]# arp -a
compute-0-5.local (192.168.2.249) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0
? (10.10.41.1) at <incomplete> on em2
compute-0-0.local (192.168.2.254) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0
compute-0-3.local (192.168.2.251) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0
compute-0-4.local (192.168.2.250) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0
compute-0-7.local (192.168.2.247) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0
? (10.10.10.218) at f8:28:19:1f:22:33 [ether] on pem3
? (10.10.11.17) at 88:e9:fe:70:25:26 [ether] on pem3
compute-0-6.local (192.168.2.248) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0
compute-0-1.local (192.168.2.253) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0
? (10.10.10.47) at c0:cb:38:3e:72:6d [ether] on pem3
? (10.10.10.1) at 1c:df:0f:b7:11:3f [ether] on pem3
compute-0-2.local (192.168.2.252) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0
rockscluster-nfs (192.168.2.244) at <incomplete> on ib0


It can't connect to IP 192.168.2.244



NFS server



route -n



[root@rockscluster-nfs ~]# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 10.10.40.1 0.0.0.0 UG 100 0 0 em1
10.10.40.1 0.0.0.0 255.255.255.255 UH 100 0 0 em1
10.10.41.0 0.0.0.0 255.255.255.0 U 100 0 0 em1
192.168.2.0 0.0.0.0 255.255.255.0 U 150 0 0 ib0
192.168.122.0 0.0.0.0 255.255.255.0 U 0 0 0 virbr0


arp -a



[root@rockscluster-nfs ~]# arp -a
? (192.168.2.250) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0
gateway (10.10.40.1) at <incomplete> on em1
? (192.168.2.253) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0
? (192.168.2.248) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0
? (10.10.41.149) at <incomplete> on em1
? (192.168.2.251) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0
? (10.10.41.223) at a0:48:1c:df:f8:86 [ether] on em1
? (10.10.41.119) at 80:18:44:e6:48:9d [ether] on em1
? (10.10.41.1) at <incomplete> on em1
? (192.168.2.254) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0
? (10.10.11.209) at d8:9e:f3:18:39:26 [ether] on em1
? (192.168.2.249) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0
? (192.168.2.252) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0
? (192.168.2.247) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0
? (192.168.2.2) at 48:00:00:80:fe:80:00:00:00 [infiniband] on ib0





linux rhel route




linux rhel route






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Dec 27 '18 at 9:35









Rui F Ribeiro

39.3k1479131




39.3k1479131










asked Dec 27 '18 at 7:19









Le TrieuLe Trieu

62




62







  • 2




    I can see two network cards using the same IP LAN (ib0 and em1 on same 192.168.2.0/24). That's usually not done, because this can cause "arp flux" issues at best, or worse (if the cards aren't actually seing each others). Also, when a question is put on hold, that's to ask you yo clarify it. This question is probably related to unix.stackexchange.com/questions/490923/… , so answerers can get a better picture.
    – A.B
    Dec 27 '18 at 9:49













  • 2




    I can see two network cards using the same IP LAN (ib0 and em1 on same 192.168.2.0/24). That's usually not done, because this can cause "arp flux" issues at best, or worse (if the cards aren't actually seing each others). Also, when a question is put on hold, that's to ask you yo clarify it. This question is probably related to unix.stackexchange.com/questions/490923/… , so answerers can get a better picture.
    – A.B
    Dec 27 '18 at 9:49








2




2




I can see two network cards using the same IP LAN (ib0 and em1 on same 192.168.2.0/24). That's usually not done, because this can cause "arp flux" issues at best, or worse (if the cards aren't actually seing each others). Also, when a question is put on hold, that's to ask you yo clarify it. This question is probably related to unix.stackexchange.com/questions/490923/… , so answerers can get a better picture.
– A.B
Dec 27 '18 at 9:49





I can see two network cards using the same IP LAN (ib0 and em1 on same 192.168.2.0/24). That's usually not done, because this can cause "arp flux" issues at best, or worse (if the cards aren't actually seing each others). Also, when a question is put on hold, that's to ask you yo clarify it. This question is probably related to unix.stackexchange.com/questions/490923/… , so answerers can get a better picture.
– A.B
Dec 27 '18 at 9:49











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