Migrating Symantec Veritas Cluster Server to HP Serviceguard for Linux

Technical white paper | Migrating Symantec Veritas Cluster Server to HP Serviceguard for Linux
Comparison of some important terminologies
The following table compares the important VCS terminologies with SG/LX terminologies.
Table 1. Important terminologies
VCS terminology SG/LX terminology Descriptions
1 System Node Member of cluster
2 Service group Package Way to package all hardware and software resource together as single unit
3 Resource agent Modules Way to manage (start/stop/monitor) hardware and software resources via SG/LX
package or VCS service groups
4 Agent Toolkit A framework to manage (start/stop/monitor) a specific application
5 Disk fencing Lock LUN One of the cluster membership arbitration mechanisms
6 Coordination point server Quorum Server One of the cluster membership arbitration mechanisms
7 VCS Operation Manager Serviceguard Manager GUI
8 Failover service groups Failover package A packaged single unit which contains software and hardware resources that run
on one node/system at a time
9 Parallel service groups Multi node package A service group/package that can run on multiple nodes at a time
10 Global clusters Continentalclusters for Linux Disaster recovery solution in which multiple clusters are used to provide
application recovery over LAN or WAN
11 Campus or metropolitan
clusters
XDC and Metrocluster
for Linux
A single cluster that spans across multiple data centers or buildings
12 Cluster Cluster Group of servers
Mapping of VCS cluster attributes to SG/LX cluster attributes
The following table maps the VCS cluster attributes to the closest SG/LX cluster attributes.
Table 2. VCS cluster attributes and SG/LX cluster attributes
VCS cluster attributes,
which can be configured
by users
Corresponding SG/LX
cluster attributes
(equivalent to some
extent), which can be
configured by users
Descriptions
1 AdministratorGroups,
Administrator
user_name, user_host, and
user_role
In VCS, the “AdministratorGroups” and “Administrator” attributes are used to
specify list of OS user account groups or list of OS users who have administrative
privileges on the cluster. This attribute applies to clusters running in secure mode.
Serviceguard provides role-based access control (RBAC) which is used to grant
Administrator privilege to multiple OS users by specifying USER_ROLE as
“FULL_ADMIN”.
3 ClusterName cluster_name The name of the cluster
4 EnableFFDC cmcluster.conf file In VCS, you can enable or disable Fast failure data capture (FFDC) logging using
“EnableFFDC” attribute. By default, FFDC logging is enabled.
In Serviceguard, the “/etc/cmcluster.conf” file is used to enable logging of various
daemons.
5 EnginePriority No attribute In VCS, you can define the priority in which high-availability daemon (HAD) runs by
using the “EnginePriority” attribute.
In Serviceguard, core daemons usually run at highest priority.
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