Edit the /etc/sysconfig/network-scripts/ifcfg-ibN configuration file, where N is the number of the interface. The following example shows the configuration for the interface ib0:

DEVICE=ib0
TYPE=InfiniBand
ONBOOT=yes 
DHCP_HOSTNAME="myhost.mydom.com"
BOOTPROTO=static
IPADDR=192.168.100.1
NETMASK=255.255.255.0
IPV4_FAILURE_FATAL=yes
IPV6INIT=no 
CONNECTED_MODE=no
NAME=ib0 

Stop the NetworkManager service:

# systemctl stop NetworkManager

Start the RDMA service:

# systemctl start rdma

Bring up the interface:

# ifup ibN

(Bug ID 19150870)