HACMP rotating mode network configuration

[polani]

Dears,
I have been assigned for configuring an HACMP/ES 4.5 cluster in rotating mode
with two nodes and one resource group.
Now it is first time for me to configure HACMP/ES cluster.
I am feeling somewhat confused about network configuration.
What i have designed in my mind is as follows:

node1_boot 145.17.64.1
node1_standby 145.17.60.1

node2_boot 145.17.64.2
node2_standby 145.17.60.2
My rotating ip will be 145.17.64.5 which will be
my shared service ip address and will rotate with oracleRG.

Questions:
1.Is this ip address scheme correct?
2. On which node i have to define rotating ip address.what should be
the appropriate label for that ip address.
3.Will IPAT work with this config?
4.will ES network discovery tool help me in this regard?
Please help me & advice me if i am wrong

Polani


Here comes polani Once again!!!

P690 Certified Specailist
HACMP & AIX Certified Specailist
AIX & HACCMP Instructor

 

[DSMARWAY]

hi ,

Ip address scheme is correct, as long as the subnet mask is the same .e.g. 255.255.255.0 for boot & standby networks

You define everything on 1 node and the synchronise the setup on the other node(s)

you have
:-
node1_boot 145.17.64.1
node1_standby 145.17.60.1

node2_boot 145.17.64.2
node2_standby 145.17.60.2

node_srv 145.17.64.5 # service address


IPAT will work in rotating cluster , you have to add a dummy MAC address to the service address when you configure the adapters in HACMP ( dummy MAC address e.g. 0x00deadbeefb5)


Network discovery , will help you it will pick up the entries for your standby,boot,service address so when you configure the adapters you can choose from the list .

 

[polani]

Dear thanks for your help!
The first question which i asked was infact related to
configuration of tcpip on AIX before defining adapters to HACMP cluster.
I have to first configure standby ip address on first adapter using smitty mktcpip ( hostname=node1)on node1.
Then I have to do the same for service ip address ( 145.17.64.5) on second adapter using smitty mktcpip ( hostname=node1) on node1.
Then i have to repeat the same procedure for node2 with same ip address (service) in second step.
Now Finally i have to smitty chinet for second adapters ( for boot addresses) on both nodes.
Is this procedure correct or i have to adopt any different procedure.
I have read many books but not clear so need some help from practical experience.
I really appreciate any help in this regard.

Polani


Here comes polani Once again!!!

P690 Certified Specailist
HACMP & AIX Certified Specailist
AIX & HACCMP Instructor

 

[DSMARWAY]

hi ,

The steps are :-

1. add ip address for boot adapter using smit
2. add ip address for standby adapter using smit

do the same for the other box ( boot & standby )

make sure speed of cards are set correctly , if using switches check the speed port the NIC is being connected to matches the speed of the card

3 . Check you can connect to interfaces from both boxes
4. You must have one non ip network for heartbeat . this can be ssa disks / or serial . Which one are you using ?
5. Change adpaters for boot ( chinet for IPAT)

6. In smit hacmp

go topology
add cluster id ( unique)
add nodes in the cluster
define your networks i.e. one for ethernet one for serial
add adapters boot , standby ,boot , standby and service
synchronise topology

If successfull , then configure your resources/application server in smit hacmp

HTH

 

[polani]

Dear guys!
I am very much thankfull to all of you for your help.
DSMARWAY! as you have told me the steps ,,,i am now in more clear picture.
But two things!
1.In step 5 when you use smit chinet command for boot adapters then what are you doing... i mean you are applying service ip on boot adapter.This step require more clarification. I need help from you in this regard.

2.Second, will the service ip address ( which is to be shared between two nodes ) to be defined on AIX level or it is to be defined only on HACMP level ( define adapters in cluster topology).

Hope to get helpfull response in this regard!!

Best Regards
Polani



Here comes polani Once again!!!

P690 Certified Specailist
HACMP & AIX Certified Specailist
AIX & HACCMP Instructor

 

[DSMARWAY]

hi ,

step 5. Basically what you are doing is assigning an boot address ( ip address as you would do normally if you put a new card in the server) on each server using smitty chinet , this is used for IPAT i.e. so the system has its own ip address to start off with and when HA starts or failsover it will over write the boot address with the service address.

The service address will be defined in HACMP , i.e. the adpetr function to be service . Here you can choose from
service, boot, standby . So you will define 2 boot , 2 standby and 1 service

HTH

 

[polani]

Hi
Thanks for ur help vary much.
I have now a very clear mind about all that thing.
I will adopt the following procedure regarding TCPIP configuration in HACMP installation.
Please have a final look on that & just give me a green signal.
1.Define standby & boot addresses on AIX level using smitty
mktcpip ( on node1 & node2 both).
2.Do smitty chinet on boot adapters on both nodes using the same ip address i.e boot ip address.
3.After installing HACMP, define adapters service ( without any node association as it belong to rotating RG), boot & standby.
4.Sync topology.

Best Regards
Polani

Here comes polani Once again!!!

P690 Certified Specailist
HACMP & AIX Certified Specailist
AIX & HACCMP Instructor