12c RAC: ADD A NEW NETWORK INTERFACE

12c RAC, Uncategorized

During installation I had configured  one network interface (eth1) for private interconnect .

[root@host01 stage]# oifcfg getif

eth0  192.9.201.0  global  public
eth1  10.0.0.0  global  cluster_interconnect,asm

Post installation, when I tried to add another network interface for private interconnect , I got the error :

[root@host01 stage]# oifcfg setif -global eth2/20.0.0.0:cluster_interconnect,asm
/proc/net/ipv6_route: No such file or directory

 

It appears that IPV6 should be enabled so that a network interface can be added  .

– Verified that  ipv6 is not enabled

[root@host01 ~]# ifconfig |grep inet6

To resolve this error, I enabled IPV6 on host01 as follows:

– Added the below entry in the /etc/modprobe.conf file

          alias net-pf-10 ipv6

– Deleted following entries from /etc/modprobe.conf file

     alias net-pf-10 off  

      alias ipv6 off

      options ipv6 disable=1

–    Changed the “ NETWORKING_IPV6” parameter value to yes in the /etc/sysconfig/network file.

      NETWORKING_IPV6=yes

– Restarted the server to enable the IPV6 support

 [root@host01 ~]# init 6

– After restart verified that IPV6 has been enabled

[root@host01 ~]# ifconfig |grep inet6
inet6 addr: fe80::20c:29ff:fe65:bedd/64 Scope:Link
 inet6 addr: fe80::20c:29ff:fe65:bee7/64 Scope:Link
 inet6 addr: fe80::20c:29ff:fe65:bef1/64 Scope:Link
 inet6 addr: ::1/128 Scope:Host

– Added another network interface (eth2) for private interconnect 

[root@host01 stage]# oifcfg setif -global eth2/20.0.0.0:cluster_interconnect,asm

– Verified that new interface eth2 has been added to cluster configuration

[root@host01 ~]# oifcfg getif

eth0 192.9.201.0 global public
eth1 10.0.0.0 global cluster_interconnect,asm
eth2 20.0.0.0 global cluster_interconnect,asm

— Stopped and restarted clusterware on all nodes

[root@host01 ~]# crsctl stop cluster -all

[root@host01 ~]# crsctl start cluster -all

-- Verified that  clusterware has implemented HAIP by configuring private VIPs on eth1:1 and eth2:1 using IP addresses on the reserved 169.254.*.* subnet to support HAIP

[root@host01 ~]# ifconfig

eth0 Link encap:Ethernet HWaddr 00:0C:29:65:BE:DD
inet addr:192.9.201.183 Bcast:192.9.201.255 Mask:255.255.255.0
inet6 addr: fe80::20c:29ff:fe65:bedd/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:808244 errors:0 dropped:0 overruns:0 frame:0
TX packets:806090 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:862174440 (822.2 MiB) TX bytes:383633712 (365.8 MiB)

eth0:1 Link encap:Ethernet HWaddr 00:0C:29:65:BE:DD
inet addr:192.9.201.180 Bcast:192.9.201.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
...

eth1 Link encap:Ethernet HWaddr 00:0C:29:65:BE:E7 inet addr:10.0.0.1 Bcast:10.0.0.255 Mask:255.255.255.0 inet6 addr: fe80::20c:29ff:fe65:bee7/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:266399 errors:0 dropped:0 overruns:0 frame:0 TX packets:313687 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:179508582 (171.1 MiB) TX bytes:245137239 (233.7 MiB)

eth1:1 Link encap:Ethernet HWaddr 00:0C:29:65:BE:E7
inet addr:169.254.121.23 Bcast:169.254.127.255 Mask:255.255.128.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

eth2 Link encap:Ethernet HWaddr 00:0C:29:65:BE:F1 inet addr:20.0.0.1 Bcast:20.0.0.255 Mask:255.255.255.0 inet6 addr: fe80::20c:29ff:fe65:bef1/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:60421 errors:0 dropped:0 overruns:0 frame:0 TX packets:60539 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:38334236 (36.5 MiB) TX bytes:48027009 (45.8 MiB) 

eth2:1 Link encap:Ethernet HWaddr 00:0C:29:65:BE:F1 
inet addr:169.254.143.152 Bcast:169.254.255.255 Mask:255.255.128.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:36703 errors:0 dropped:0 overruns:0 frame:0 TX packets:36703 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:41656757 (39.7 MiB) TX bytes:41656757 (39.7 MiB)

I hope this post was useful.

Your comments and suggestions are always welcome.

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Related Links :

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11g R2 RAC : Highly Available IP (HAIP)

11g R2 RAC: NIC Bonding

 

 

 

Regards

Your comments and suggestions are welcome!