HP Serviceguard Metrocluster with EMC SRDF for Linux B.01.00.00

2 Configuring an application in a Metrocluster solution
Installing the necessary software
Before you begin any configuration, ensure the following software is installed on all the nodes:
• Symmetrix EMC Solutions Enabler software that allows the management of the Symmetrix
disks from the node.
• If you are building an M by N configuration using RDF Enginuity Consistency Assist (RDF-ECA),
you must install only Symmetrix EMC Solutions Enabler 7610 or later. You do not have to
install any other software.
• Before you begin any configuration, ensure the following software is installed on all the nodes:
Serviceguard for Linux◦
◦ Metrocluster with EMC SRDF for Linux
◦ Metrocluster Addons
Building the Solutions Enabler CLI database
After installing Solutions Enabler on all the nodes running packages that use data on the EMC
Symmetrix disk arrays, create the EMC Solutions Enabler database on each system using the
following steps. (See, Symmetrix EMC Solutions Enabler manual).
Run the following command on each node:
# symcfg discover
This builds the Solutions Enabler symapi database on the node.
Display what is in the EMC Solutions Enabler database.
• symdg list
• symld -g <Device Group Name> list
• symgate list
If the EMC Solutions Enabler database is not configured, the following error message is displayed:
The Symmetrix configuration could not be
loaded for a locally attached Symmetrix
NOTE: Do not set the SYMCLI_SID and SYMCLI_DG environment variables before running the
symcfg command. These environment variables limit the amount of information gathered when
the EMC Solutions Enabler database is created, and therefore will not be a complete database.
Also, you must not set the SYMCLI_OFFLINE variable since this environment variable disables the
command line interface.
Determining Symmetrix device names on each node
To correctly specify the device file names when creating Symmetrix device groups, be sure to map
the disks to the R1 and R2 Symmetrix devices.
To gather the necessary information:
1. Obtain a list of data for the Symmetrix devices available, by running the following command
without any options on each node:
# syminq
Sample output from both the R1 and R2 sides are as follows:
From R1 side:
Installing the necessary software 9