Novell D7171A - NetServer - LPr, LC2000r - NetServer - 128 MB RAM, LH3000r - NetServer - 128 MB RAM, LH4r - NetServer - 256 MB RAM Installation Manual
Final
disclaimer
Novell, Inc. makes no representations or warranties with respect to the
contents or use of this documentation, and specifically disclaims any
express or implied warranties of merchantability or fitness for any
parti cula r purpos e. Furt her, Nove ll, Inc. re serves the rig ht to revi se this
publication and to make ch anges to its conte nt, at any time, without
obligation to noti fy any person or e ntity of such re visions or changes.
Further, Novell, Inc. makes no represe ntation s or warranti e s with
respect to any software, and specifically disclaims any express or
implied warranties of me rchantab ility or fitn e ss f or any particular
purpose. Furthe r, Nov ell, In c. res erves th e right to make c hanges to a ny
and all pa rts of Nov e ll softwar e , at any ti me, without any obli gation to
notif y any per son or e n tity of su c h changes.
export notice
trademarks
This product may require export authorization from the U.S.
Department of Commerce prior to exporting from the U.S. or Canada.
Novell and NetWare and GroupWise are registered trademarks of
Novell, Inc. in the United States and other countries. ConsoleOne, NDS,
NetWare Cluster Services, Novell Client, and Novell Storage Services
are trademarks of Novell, Inc. Novell Authorized Reseller is a service
mark of Novell, Inc.
Windows and Wi ndows NT are registered trademar ks of Microsoft
Cor p or a ti o n . Ne tscape E nt e rp rise S e rv e r is a trade m a rk of Ne tsca p e
Communications Co rp oration. Oracle is a registered trademark of
Oracle Corporation.
Copyright © 1999 Novell, Inc. All rights reserved. No part of this
publication m ay be reproduced, photocopi ed, stored on a retrieval
system, or tra nsm itted without the express written consent of the
publisher.
U.S. Patent Nos. 5,157,663; 5,349,642; and 5,455,932. U.S. Patent
Application No. 5,572,528. U.S. and Foreign Pat ents Pending.
Novell, Inc.
122 East 1700 South
Provo, UT 84606
U.S.A.
Overview and Installation
8/99
100-004511- 001 A
ontents
C
Introduction to Cluster Services
Introduction to Cluster Services. . . . . . . . . . . . . . . . . . . . . . . . . . . v
1Overview
Product Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Product Benefits. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Cluster Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Cluster Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2 Inst allat ion and Setu p
Hardware Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Software Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Shared Disk System Requirements. . . . . . . . . . . . . . . . . . . . . . . . . 8
Installing NetWare Cluster Services . . . . . . . . . . . . . . . . . . . . . . . . 9
NetWare Cluster Services Licensing . . . . . . . . . . . . . . . . . . . . . 9
Begin the Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Add Servers to the Cluster . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Setting Up NetWare Cluster Services. . . . . . . . . . . . . . . . . . . . . . . . 14
Create Cluster Volumes. . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Cluster-Enable Volumes . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Create Cluster Resource Templates . . . . . . . . . . . . . . . . . . . . . 16
Create Cluster Resources. . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Configure Load Scripts . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Configure Unload Scripts . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Set Failover and Failback Modes . . . . . . . . . . . . . . . . . . . . . . . 19
Assign Nodes to a Resource . . . . . . . . . . . . . . . . . . . . . . . . . 20
Configuration Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Client Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Edit Quorum Membership and Timeout Properties . . . . . . . . . . . . . . 21
Membership . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Timeout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Contents
iii
Cluster Protocol Properties. . . . . . . . . . . . . . . . . . . . . . . . . . 22
Heartbeat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Tolerance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Master Watchdog. . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Slave Watchdog . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Max Retransmits . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Cluster Port Properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Cluster Node Properties . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Number+IP Address . . . . . . . . . . . . . . . . . . . . . . . . . . 24
NCP Server. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Migrate Resources. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Identify Cluster and Resource States . . . . . . . . . . . . . . . . . . . . . . . 25
NetWare Cluster Services Console Commands . . . . . . . . . . . . . . . . . . 27
iv
Overview and Installation
Introduction to Cluster Services
Novell Cluster Services is a server clustering system that ensures high
availability and manageability of critical network resources including data
(volumes), applications, server licenses, and services. It is a multinode, NDSenabled clustering product for NetWare 5 that support s failover , failback, and
migration (load balancing) of individually managed cluster resources.
Introduction to Cluster Services
v
vi
Overview and Installation
chapter
1
Overview
NetWare® Cluster ServicesTM is a server clustering syst em tha t ensur es high
availability and manageability of critical network resources including data
(volumes), applications, server licenses, and services. It is a multinode
clustering product for Ne tWare 5 that is enabled for NDS
failove r, failback, and migration (loa d balancing) of indi vidually managed
cluster resources.
Product Features
NetWare Cluster Services includes se veral importan t features to help you
ensure and manag e the availability of your network resources. These include:
• Support for shared dis k configurations or local disk configurations.
TM
and supports
• Multinode al l-act ive c luste r (u p to 32 no des). Any Ne tWare server i n the
cluster can resta rt resources (applications, services, IP addresses, and
volumes) from a failed server in the cluster.
• Single point of administration through a Java-based ConsoleOne
cluster con figuration and monitoring GUI.
• The abil ity to tailor a cluster to the specific applications and hardwa re
infrastructure that fit your organization.
• Dynamic assignment and reassignment of server storage on an asneeded basis.
TM
Chapter 1: Overview
1
Product Benefits
NetWare Cluster Services allows you to configure up to 32 NetWare 5 serve r s
into a high-availability cluster, where resources can be dynamically switched
or moved to any serv er in the cluster. Resources can be configured to
automatic ally switch or be moved in the event of a server failure, or ca n be
moved manually to troubleshoot ha rdware or balance the workload.
NetWare Cluster Services provides high availability from commodity
components. Lower costs are obtained through the consolidation of
applicati ons and operation s onto a cluster . Th e ability to manage a cluster from
a single point of control and to adjust res ources to meet changi ng workload
requiremen ts ( thus , manually “load balance” the cluster) are also important
benefits of NetWare Cluster Services .
An equall y imp ortant benefi t of i mplemen ting NetWare C luster Se rvice s is t hat
you can reduce unpl anned service outages and reduce planned outages for
software and hardware maintenance and upgrades.
Reasons you would want to implement NetWare Cluster Services inc lude:
• Increased availability
• Improved performance
• Low cost of operation
• Scalabi lity
• Disaster recovery
• Dat a p r ot ec ti o n
• Shared resources
Shared disk fault tol erance can be obtained by implemen ting RAID Level 5 on
the shared dis k subsystem.
An example of the benefits NetWare Cluster Services provides can be better
understood through the following scenario.
Suppose you have conf igured a three-server cluster, with a Web s erver installed
on e ach of the three ser vers in t he cl uster . Eac h of t he s ervers in the cluste r ho sts
2
Overview and Installation
two Web sites. All t he dat a, gra phi cs, and e-mai l messa ges fo r each Web site is
stored on a shared disk subsystem connected to each of the servers in the
cluster. The following figure depicts how this setup might look.
Web Server 1
Web Site A
Web Site B
Web Server 2
Web Site C
Web Site D
Fiber Channel Switch
Web Site E
Web Site F
Shared Disk
System
Web Server 3
During normal clu ster operation, each server is in constant comm unication
with the other se rvers in the cluster and performs periodic poll ing of all
registered resources to detect failure.
Suppose Web Server 1 experiences hardware or soft ware pr oblems and the
users depending on Web Server 1 for Internet access, e-mail, and information
lose their connections. The following figure shows how resources are moved
when Web Server 1 fails.
Web Server 1
Web Server 2
Web Site A
Web Site C
Web Site D
Fiber Channel Switch
Shared Disk
System
Web Server 3
Web Site B
Web Site E
Web Site F
Chapter 1: Overview
3
W e b Sit e A moves t o Web Server 2 and Web Site B moves to Web Server 3. IP
addresses and applicabl e licenses a lso move to Web Server 2 and Web Server 3.
When you configured the cluster, you decided where the Web sites hosted on
each Web server would go should a fai lure oc cur. In the previous example you
configure d Web Site A to move to Web Server 2 and Web Site B to move to
W e b Se rver 3. This way, the workloa d once ha ndled b y Web Server 1 i s evenl y
distribute d.
When Web Server 1 failed, NetWare Cluster Services software
• Detected a failure.
• Restarted applications (th at were running on Web Server 1) on Web
Server 2 and Web Server 3 as specified.
• Transferred IPaddresses to Web Server 2 and Web Server 3 as specified.
• Remounted the shared data volumes (that were formerly mounted on
Web server 1) on Web Server 2 and We b Server 3 as specified.
In this example, the failover proces s ha ppened quickly and users regained
access to the Inter net, Web site information, a nd e-mail within second s, and in
most cases, without having to log in again.
Now suppose the problems with Web Server 1 are resolved, and Web Server 1
is returned to a nor mal operating state. Web Site A and Web Site B will
automatic ally failback, or be moved back to Web Server 1, and Web Server
operation will return back to the way it was before Web Server 1 failed.
NetWare Cluster Ser v ices also pro v ides resource mi gr ation capabilities. You
can move applications, Web sites, etc. to other se rvers in your cluster without
waiting for a server to fail.
For example, you coul d have m anual ly move d Web Site A or Web Site B from
W e b Server 1 to eith er of t he other se rvers i n the clust er. Y ou migh t want to do
this to up grade or perform schedule d maintenance on Web Server 1, or just to
increase perform an c e or accessi bilit y of the Web sites.
4
Overview and Installation
Cluster Configuration
Typical cluster configurations normally include a shared disk subsystem
connected to all servers in the cluster. The shared disk subsystem can be
connected via high-speed fiber cha nnel cards, cables, and switches, or be
configured t o use sha red SCSI. If a server fails, another des ignated s erver in the
cluster automatically mounts the shared subsyst em volumes previously
mounted on t he faile d server . This giv es network us ers continu ous acc ess to the
volumes on the shared disk subsystem.
Typical resources m ight include data (volumes), applications, server licenses,
and services. The following figure shows how a typical fiber channel cluster
configuration might look.
Network Hub
Network
Interface
Card(s)
Server 1 Server 2 Server 3 Server 4 Server 5 Server 6
Sys Sys Sys Sys Sys Sys
Fiber Channel Switch
Shared Disk
System
Although fi ber channel is the recommended configuration, you can configure
your cluster to use shared SCSI. The following figure shows how a typical
shared SCSI cluster configuration might look.
Fiber
Channel
Card(s)
Chapter 1: Overview
5
Loading...