Hi .. I have some old cluster nodes that were working fine under previous versions of CentOS 7 (I think it was CentOS 7.3 before update) but after doing a recent update to CentOS 7.5 I can't seem to get the interface to come up. I reinstalled the latest MLNX_OFED drivers (MLNX_OFED_LINUX-4.3-184.108.40.206-rhel7.5-x86_64) which installed properly. I see the card in lspci and the kernel modules seem to be loaded as well. However, I can't seem to bring up the interface. Doing an ifup I get this:
ERROR : [/etc/sysconfig/network-scripts/ifup-eth] Device ib0 does not seem to be present, delaying initialization.
Which seemed weird to me that it was trying to use the ifup-eth code instead of the ifup-ib code to bring up the interface. When I looked for this file I don't see it on the system with the mlnx_ofed software installed. If I don't install mlnx_ofed and just leave the CentOS drivers installed the card comes up fine. I also notice this comes from the rdma-core package from CentOS:
# rpm -qf /etc/sysconfig/network-scripts/ifup-ib
When I look at the mlnx_ofed installed machine I don't see an rdma-core package...
# rpm -qa | grep rdma
So I'm wondering if I am missing something with this? Previous versions I didn't seem to have any issues with getting it installed and using it. Anyone have some advice as to what I should look at further to figure this out? Thanks,
Could you please check if ib0 interface found under "ifconfig -a" ?
If not, i suggest the following:
1) invoke mst start -> mst status -> ifconfig and check again
2) Try to restart the interfaces:
- /etc/init.d/openibd restart
- opensm start or start the SM on the switch
3) If the above still not working , create interface manually :
IPADDR=<ip from the same subnet>