Distributed Systems Administration Utilities User's Guide, Linux, March 2009

Serviceguard package and the mechanism used to distribute cfengine’s security keys. Follow all
the steps described below.
• Initial Serviceguard Package Preparation
1. Start by obtaining an IP address for the package. This address is typically registered in
DNS to simplify management of remote clients. If you are using cfengine for intra-cluster
use only, it is sufficient to make sure the address is added to each member’s /etc/
hosts file.
2. Next, create the storage infrastructure required for a new package. The instructions for
doing this are documented in the Managing Serviceguard manual, under “Building an
HA Cluster Configuration”, “Creating a Storage Infrastructure.” For example, if using
an LVM storage infrastructure, that would include the following steps:
a. Create the LVM volume group (VG) and logical volumes (LV) (for example, /dev/
vgcsync/lvol1).
b. Exporting/importing the volume group clusterwide.
c. Setting up a filesystem on the logical volumes.
d. Creating the filesystem’s mount point (for example, /csync) clusterwide.
The default templates assume you are using LVM-based storage. To use VxVM or other
clusterwide storage and filesystems, make the appropriate changes to the package
templates described below. Also note that the Disks and Filesystems Tool (fsweb),
available from the System Management Homepage, can help simplify volume group
and filesystem setup.
3. Make sure the filesystem for the package is mounted on the current member. For
example, if using LVM do the following:
# vgchange -a e /dev/vgcsync
# mount -o rw /dev/vgcsync/lvol1 /csync
• Initial Policy File Customization
1. Create a subdirectory for the master policy files and reference files. For example:
# mkdir -p /csync/dsau/cfengine_master/master_files
These example directories are those used by the csync_wizard.
2. Copy the default templates into the master inputs directory:
# cd /csync/dsau/cfengine_master/inputs
# cp /opt/dsau/share/cfengine/templates/cf.main.template cf.main
# cp /opt/dsau/share/cfengine/templates/update.conf.template
update.conf
# cp /opt/dsau/share/cfengine/templates/cfagent.conf.template
cfagent.conf
# cp /opt/dsau/share/cfengine/templates/cfrun.hosts.template
cfrun.hosts
# cp /opt/dsau/share/cfengine/templates/cfservd.conf.template
cfservd.conf
3. Edit update.conf. This file has a format similar to cfengine’s main configuration file
cfagent.conf. It is used to transfer and update cfengine binaries and any updated
configuration definitions files (for example, cfagent.conf) to the managed clients.
2.3 Configuring cfengine 33