User's Guide
Add all relocatable IP address information to
/etc/hosts
. Remember to add the heartbeat IP addresses.
liveCache Installation Step: LC120
If you use DNS:
Configure /etc/nsswitch.conf to avoid problems. For example:
hosts: files[NOTFOUND=continue UNAVAIL=continue \
TRYAGAIN=continue]dns
HP-UX Setup for Option 4
This section describes how to install a hot standby instance on the secondary node.
hot standby Installation Step: LC143
The hot standby instance of storage option 4 can be installed with the installer routine that comes on the SAP
liveCache media.
There is no special option for a hot standby provided by SAP yet, but installation is very straight-forward.
"Install" or "patch" the master instance on the standby host. This creates local copies of all required directories,
users, services and files. log files and data files should not be defined in this step.
hot standby Installation Step: LC145
In this step, the correct storage layout to support the hardware based copy mechanisms for the
devspaces
of the data files gets created.
On the Storageworks XP array pvol/svol pairs should be defined for all LUNs containing DISKDnnnn
information of the master. These LUNs should be used for devspace data exclusively. Make sure that all
pairs are split into SMPL (simple) state.
NOTE: A hot standby configuration requires the BCV copy mechanism to be preconfigured, but LUNs will
not be in synchronization mode during normal operation.
hot standby Installation Step: LC147
Manually create the same LVM volume group layout for the data files on the secondary node as is in place
on the primary.
Create temporary volume groups, logical volumes, filesystems and mountpoints by using the master instance
as a reference. Instead of using the same LUNs as the master, use the corresponding svols that are in
SMPL state. These svol LUNs will be synchronized later to become populated with a copy of the master
data. The hot standby instance will take the LVM volume group layout created here as a reference on how
to recreate its storage structure during startup.
hot standby Installation Step: LC149
The liveCache instances require full administration control to handle their storage configuration.
There is a special callback binary on the primary and secondary node that acts as a gateway to these
functions. The ownership and permissions of this binary need to be manually changed on both nodes to
have the root user confirm this step:
chmod 4750 /opt/cmcluster/sap/bin/hsscb
chown root:sdba /opt/cmcluster/sap/bin/hsscb
hot standby Installation Step: LC152
Add
/opt/cmcluster/sap/lib/hpux64
to the root and
<LCSID>adm SHLIB_PATH
environment
variables on both nodes.
hot standby Installation Step: LC155
The XP Raidmanager needs to be installed and configured correctly on both nodes.
Unless defined differently in the root user environment, SGeSAP will default to the following settings:
HORCC_MRCF=1
HORCMINST=0
HORCM_CONF=/HORCM/etc/horcm0.conf
HP-UX Setup for Option 4 101