Disk Based Heart Beat Configuration in HACMP_AIX

This post shows step by step procedure involved in creating the Disk based heart beat polling in the HACMP environment.

Heartbeat polling refer to the process of checking the TCI/IP connectivity between the nodes in the cluster.

Heartbeat polling could be configured in a TCP/IP based or non-TCP/IP based network.

When the hearbeat fails, the failover happens based on the policy configured in the HACMP.

1) Select the physical volume (common) of smallest size.

# lspv
# booinfo -s hdisk# : Command to view the size of the disk.

2) Create a enhanced concurrent volume group.

# mkvg -y disk_beat_polling -s 4 -C -n hdisk1

or

# smitty hacmp-->c-spoc-->hacmp concurrent logical volume management--> concurrent volume group--> create a concurrent volume group-->  select the nodes in the cluster --> select the PVID--> enter the Volume group name and Enter.

3) Perform Discovery Hacmp Related Information.

4) Add the dish beat network.

# smitty hamp--> extended configuration--> resource configuration--> add a network to hacmp cluster --> Select the "diskhb" from the predefined serial device type and Enter.

The default TCP/IP network name : net_ether_##

The default Disk based network name : net_diskhb_##

5) Configure communication Interfaces / Devices.

smitty hacmp-->extended configuration--> extended topology configuration--> configure hacmp communication interfaces/devices  --> add communication interfaces/devices--> add a discovered communication interface and devices --> communication devices -->select the nodes in the cluster and Enter.

Now perform verification and syncronization. Finally start the cluster services.

Successful configuration of disk beat polling is viewed through:

# lssrc -ls topsvcs

Look for the column which says "HB Interval; Sensitivity and Missed HB's"