Change of Network Addr.

[Alkesh Dessai]

We R on Network ip addr.145.21 and want to change to network 10.139
The 2 Servers of which we have to change the Network addr. are clustered and MC/Serviceguard running on it.
Pl. let me know the parameter and files to be changed to switch over to the new network.
What changes R to be made to switch to 10.139 network

[Victor BERRIDGE]

/etc/hosts
/etc/rc.config.d/netconf
/etc/resolv.conf

And the name resolver servers if you use DNS

[John Palmer]

Hi,

Have a look at this previous thread...

http://my1.itrc.hp.com/cm/QuestionAnswer/1,1150,0x514b68c57f64d4118fee0090279cd0f9,00.html

Regards,
John

[Victor BERRIDGE]

Forgot parameters...
IPaddr., netmask, route - gateways...
I cant hepl you with Service guard, but I suppose it s similar to HACMP, so you should have a bootIP a serviceIP, and a standbyIP...

[James R. Ferguson · Accepted solution]

Hi:

1. Halt your Mc/ServiceGuard cluster first.

2. Make your IPADDRESS changes
in /etc/rc.config.d/netconf and /etc/hosts and /etc/resolv.conf (if necessary). Make sure you change your network gateway address too, it's easy to miss.

3. Do step-2 on both nodes of the cluster and boot each to make sure they come up and connect to the network as expected.

4. Modify the /etc/cmcluster/ file making the necessary network changes.

5. Run cmcheckconf.

6. Run cmapplyconf and make sure your binary file ports to the secondary node.

7. Run cmruncl to bring up the cluster.

8. Ideally, check for a successful failover.

...JRF...