Preparing and testing configuration
Change Request for GRID version 11.2.0.4 grac41: switching CI from eth2 192.168.2.101 to eth3 192.168.3.101 grac42: switching CI form eth2 192.168.2.102 to eth3 192.168.3.102 Check RAC nodes and CRS status root@grac41 Desktop]# olsnodes -n -i grac41 1 192.168.1.250 grac42 2 192.168.1.249 [root@grac41 Desktop]# crsctl check cluster -all ************************************************************** grac41: CRS-4537: Cluster Ready Services is online CRS-4529: Cluster Synchronization Services is online CRS-4533: Event Manager is online ************************************************************** grac42: CRS-4537: Cluster Ready Services is online CRS-4529: Cluster Synchronization Services is online CRS-4533: Event Manager is online ************************************************************** [root@grac41 Desktop]# oifcfg getif eth1 192.168.1.0 global public eth2 192.168.2.0 global cluster_interconnect [root@grac42 ~]# oifcfg getif eth1 192.168.1.0 global public eth2 192.168.2.0 global cluster_interconnect Verify that the new interface is ready on all nodes and check that MTU size is equal OLD CI: ( from grac41 ) eth2 Link encap:Ethernet HWaddr 08:00:27:DF:79:B9 inet addr:192.168.2.101 Bcast:192.168.2.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 NEW CI: ( from grac41 ) eth3 Link encap:Ethernet HWaddr 08:00:27:2E:59:28 inet addr:192.168.3.101 Bcast:192.168.3.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 --> MTU size is 1500 on both devices and new CI Network adress are configured and ready Testing connectivity [root@grac41 network-scripts]# ssh grac41 "/bin/ping -s 1500 -c 10 -I 192.168.3.101 192.168.3.102" [root@grac41 network-scripts]# ssh grac42 "/bin/ping -s 1500 -c 10 -I 192.168.3.102 192.168.3.101"
Add new CI Interfaces with oifcfg setif
Stop newly configured interfaces on all nodes [root@grac41 network-scripts]# ifconfig eth3 down [root@grac42 network-scripts]# ifconfig eth3 down [root@grac41 network-scripts]# oifcfg setif -global eth3/192.168.3.0:cluster_interconnect Verify change on all nodes [root@grac41 network-scripts]# oifcfg getif eth1 192.168.1.0 global public eth2 192.168.2.0 global cluster_interconnect eth3 192.168.3.0 global cluster_interconnect [root@grac42 network-scripts]# oifcfg getif eth1 192.168.1.0 global public eth2 192.168.2.0 global cluster_interconnect eth3 192.168.3.0 global cluster_interconnect Stop and disable CRS on all nodes [root@grac41 network-scripts]# crsctl stop crs [root@grac41 network-scripts]# crsctl disable crs Restart newly configure CI interface on all nodes and run ping command [root@grac41 network-scripts]# ifconfig eth3 up [root@grac41 network-scripts]# ssh grac41 "/bin/ping -s 1500 -c 10 -I 192.168.3.101 192.168.3.102" [root@grac41 network-scripts]# ssh grac42 "/bin/ping -s 1500 -c 10 -I 192.168.3.102 192.168.3.101" Restart and enable CRS on all nodes : [root@grac41 network-scripts]# crsctl enable crs CRS-4622: Oracle High Availability Services autostart is enabled. [root@grac41 network-scripts]# crsctl start crs CRS-4123: Oracle High Availability Services has been started. Note at this stage out CI uses both Interfaces eth2 and eth3 !
Remove the old interface if required
[root@grac41 network-scripts]# oifcfg delif -global eth2/192.168.2.0 [root@grac42 ~]# oifcfg getif eth1 192.168.1.0 global public eth3 192.168.3.0 global cluster_interconnect [root@grac41 network-scripts]# oifcfg getif eth1 192.168.1.0 global public eth3 192.168.3.0 global cluster_interconnect Stop the old CI interfaces [root@grac41 ~]# ifconfig eth2 down [root@grac42 ~]# ifconfig eth2 down --> Clusterware should remain up and running
Reference
- How to Modify Private Network Information in Oracle Clusterware (Doc ID 283684.1)