Managing HP Serviceguard Extension for SAP for Linux, December 2013

For example:

# cat/db2/db2<dbsid>/.rhosts

When using ssh for the virtual host configuration, the public key of each physical host in the cluster

must be put into the system's known hosts file. Each of these keys must be prefixed by the virtual

hostname and IP. Otherwise, DB2 triggers an error when the virtual hostname fails over to another

cluster node, and reports different key for the virtual hostname. In addition, password-less ssh

NOTE: For information about how to setup ssh in a DB2 environment, see the SAP note 1138605

(DB6 - Use ssh as remote shell utility in DPF environment).

HANA: Set up HANA client files on all cluster nodes

Make sure that a copy of the HANA client directory /usr/sap/<SID>/hdbclient is available

on all nodes.

5.4.2 User synchronization

The synchronization of the user environment has the following three sub tasks after completing the

SAP installation:

• Synchronize the user and group ids.

• Copy home directory to all the secondary nodes.

• In the home directory, adap the filenames containing hostnames.

NOTE: The user environment necessary to run the SAP instances and database instances

must be identical on each cluster node.

To be independent of external services to the cluster like DNS or LDAP, local authorization (for

example, /etc/passwd, /etc/shadow, and /etc/group) is recommended for users and

group information. The SAP and database administrators of the various SAP and DB instances

require the entries listed in Table 20 (page 69) table. The database specific user and groups exist

only if SAP is installed with the corresponding database.

Table 20 Password file users

Home directoryPurposeUsername

/home /sapadmSAP system administratorsapadm

/home/<sid>admSAP SID administrator<sid>adm

/home/<dasid>admSAP Diagnostic Agent administrator<dasid>adm

/home/ora<dbsid> or

/oracle/<DBSID> (shared)

Oracle database administratorora<dbsid>

/home/sqd<dbsid>MaxDB database administratorsqd<dbsid>

/home/<lcsid>admliveCache database administrator

<lcsid>adm

MaxDB file ownersdb

/sybase/<dbsid> (shared)Sybase database administratorsyb<dbsid>

/db2/db2<dbsid>(shared)DB2 database ownerdb2<dbsid>

/home/sap<dbsid>

/home/sap<dbsid>db

ABAP/Java connect user in a DB2

environment

sap<dbsid>sap<dbsid>db

does not follow sqd<dbsid>MaxDB convention.

5.4 Post SAP installation tasks and final node synchronization (Phase 3a) 69