Mixed Netware And Linux Clusters - Novell OPEN ENTERPRISE SERVER CLUSTER SERVICES 1.8.2 - ADMINISTRATION Manual

3.6.3 Mixed NetWare and Linux Clusters

Novell Cluster Services includes some specialized functionality to help NetWare and Linux servers
coexist in the same cluster. This functionality is also beneficial as you migrate NetWare cluster
servers to Linux. It automates the conversion of the Master IP Address resource and cluster-enabled
NSS pool resource load and unload scripts from NetWare to Linux. The NetWare load and unload
scripts are read from eDirectory, converted, and written into Linux load and unload script files.
Those Linux load and unload script files are then searched for NetWare-specific command strings,
and the command strings are then either deleted or replaced with Linux-specific command strings.
Separate Linux-specific commands are also added, and the order of certain lines in the scripts is also
changed to function with Linux.
Cluster resources that were originally created on Linux cluster nodes cannot be migrated or failed
over to NetWare cluster nodes. Cluster resources that were created on NetWare cluster nodes and
migrated or failed over to Linux cluster nodes can be migrated or failed back to NetWare cluster
nodes. If you want resources that can run on both NetWare and Linux cluster nodes, create them on
a NetWare server.
If you migrate an NSS pool from a NetWare cluster server to a Linux cluster server, it could take
several minutes for volume trustee assignments to synchrozine after the migration. Users might have
limited access to migrated volumes until after the synchronization process is complete.
WARNING: Changing existing shared pools or volumes (storage reconfiguration) in a mixed
NetWare/Linux cluster is not possible. If you need to make changes to existing pools or volumes,
you must temporarily bring down either all Linux cluster nodes or all NetWare cluster nodes prior to
making changes. Attempting to reconfigure shared pools or volumes in a mixed cluster can cause
data loss.
The following table identifies some of the NetWare specific cluster load and unload script
commands that are searched for and the Linux commands that they are replaced with (unless
deleted).
Table 3-1
Action
Replace
Replace
Replace
Replace
Delete
Delete
Replace
Replace
Replace
24 OES Novell Cluster Services 1.8.2 Administration Guide for Linux
.Cluster Script Command Comparison
NetWare Cluster Command
IGNORE_ERROR add secondary ipaddress
IGNORE_ERROR del secondary ipaddress
del secondary ipaddress
add secondary ipaddress
IGNORE_ERROR NUDP (deletes entire line)
IGNORE_ERROR HTTP (deletes entire line)
nss /poolactivate=
nss /pooldeactivate=
mount volume_name VOLID=number
Linux Cluster Command
ignore_error add_secondary_ipaddress
ignore_error del_secondary_ipaddress
ignore_error del_secondary_ipaddress
exit_on_error add_secondary_ipaddress
nss /poolact=
nss /pooldeact=
exit_on_error ncpcon mount
volume_name=number