HACMP 2 Node Cluster Steps- Part I

Cluster Configuration between Node A and  Node B.


Node A :


Bootip : 192.168.1.1
Standby ip : 192.168.1.2
Persistent ip : 192.168.1.3
Service ip : 10.0.0.1


Node B:


Bootip : 192.168.2.1
Standby ip : 192.168.2.2
Persistent ip : 192.168.2.3
Service ip : 10.0.0.2




Ensure that above entries are added to the "/etc/hosts" of Node A and Node B.


We assume that the required file sets for HACMP are already installed on the nodes and both the nodes are restarted.


1) Configure Cluster (Cluster Name: test_cluster)
2) Node Configuration : (Node A and Node B).
3) Network Configuration.
4) Resource Configuration.
5) Verification and Syncronization.


Configure Cluster:


# smitty hacmp --> Extended Configuration --> Extended Topology Configuration --> Configure Cluster-->Add/Change/Show Hacmp Cluster


Enter the name of the cluster "test_cluster" and Enter.


Configuration of Nodes:


# smitty hacmp --> Extended Configuration --> Extended Topology Configuration --> Configure HACMP Nodes--> Add a node to HACMP Cluster.


Select Node Name "Node_A_test_cluster" and enter communcation path to the node as boot ip of node A which "192.168.1.1" and repeat the same for node B "Node_B_test_cluster" and the communication path to the ndoe "192.168.2.1".


Discovery of Configured Nodes:


Now we are going to do a discovery of the nodes added to the cluster.


# smitty hacmp --> Extended Configuration --> Discover HACMP-related Information from Configured Nodes
Network Configuration:


# smitty hacmp --> Extended Configuration --> Extended Topology Configuration--> Configure HACMP Networks --> Add a Network to the cluster --> Select "ether" and Enter.


Enter:


Network Name : Default name appear "net_ether_##"
Network Type : ether
Netmask : Mask value appears
Enable IP Address Takeover : Select "Yes" if you opt for "IPAT over Alias" Method.


Enter.


Adding Communication devices to the cluster


This as the name implies we need to add the communication devices to the cluster. Device means "Node A" and "Node B" and how they communicate with each other. The communication happens via "Node_A and Node_B (boot_ip and standby ip).


# smitty hacmp --> Extended Configuration --> Extended Topology Configuration--> Configure HACMP Communication Interfaces/Devices --> Add communication interfaces/device--> Add a Discovered Communication Interface and Devices and select "Communication Interfaces"


Now select the network which you have configure "net_ether_##". Which in turn opens a window with the "Node_A_test_cluster" and "Node_B_test_cluster" [bootip and standby ip]
select the ip (totally 4) that is 2 per node and "Enter".


Cont........Part II