In this article I will show how to reconfigure IP addresses in public network for RAC. `
First we have to close all cluster resources
1 | [oracle@lodzio ~]$ crsctl stop res -all |
This command can hang on stopping ASM. It’s normal, because the resource CRSD is using OCR, which is located on ASM diskgroup. In ASM alertlog you will see errors like:
1 | ORA-15032: not all alterations performed |
2 | ORA-15027: active use of diskgroup "GRIDASM" precludes its dismount |
3 | ERROR: ALTER DISKGROUP GRIDASM DISMOUNT /* asm agent *//* {1:57617:368} */ |
You can resolve this by restarting CRSD – execute below commands on all nodes:
1 | [oracle@miodzio ~]$ crsctl stop res ora.crsd -init |
2 | CRS-2673: Attempting to stop 'ora.crsd' on 'miodzio' |
3 | [oracle@miodzio ~]$ crsctl start res ora.crsd -init |
4 | CRS-2672: Attempting to start 'ora.asm' on 'miodzio' |
Now reconfigure all network devices and make appropriate changes in DNS. Make sure that all names are resolved correctly.
Delete public network from cluster configuration:
1 | [root@lodzio ~]# oifcfg delif -global eth0/192.168.0.0 |
And add new public network definition
1 | [root@lodzio ~]# oifcfg setif -global eth0/192.168.56.0:public |
2 | [root@lodzio ~]# oifcfg getif |
3 | eth1 10.0.0.0 global cluster_interconnect |
4 | eth0 192.168.56.0 global public |
Now we can modify cluster resources:
1 | [root@lodzio ~]# srvctl modify network -S 192.168.56.0/255.255.255.0/eth0 |
2 | [root@lodzio ~]# srvctl modify nodeapps -n lodzio -A lodzio-vip/255.255.255.0/eth0 |
3 | [root@lodzio ~]# srvctl modify nodeapps -n miodzio -A miodzio-vip/255.255.255.0/eth0 |
4 | [root@lodzio ~]# srvctl modify scan -n scan.racdomain |
5 | [root@lodzio ~]# srvctl config nodeapps |
6 | Network exists: 1/192.168.56.0/255.255.255.0/eth0, type static |
7 | VIP exists: /lodzio-vip/192.168.56.31/192.168.56.0/255.255.255.0/eth0, hosting node lodzio |
8 | VIP exists: /miodzio-vip/192.168.56.32/192.168.56.0/255.255.255.0/eth0, hosting node miodzio |
9 | GSD exists |
10 | ONS exists: Local port 6100, remote port 6200, EM port 2016 |
11 | [root@lodzio ~]# srvctl config scan |
12 | SCAN name: scan.racdomain, Network: 1/192.168.56.0/255.255.255.0/eth0 |
13 | SCAN VIP name: scan1, IP: /scan.racdomain/192.168.56.41 |
14 | SCAN VIP name: scan2, IP: /scan.racdomain/192.168.56.42 |
15 | SCAN VIP name: scan3, IP: /scan.racdomain/192.168.56.43 |
And start cluster resources:
1 | [oracle@lodzio ~]$ crsctl start res -all |