background image

Chapter 1:  Overview 

1

Overview and Installation

100-004511-001 A

August 31, 1999

Novell Confidential

95g_tpl.fm

Temp. Rev 2.02

26 Feb 99

c h a p t e r

1

Overview

NetWare

®

 Cluster Services

TM

 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 
clustering product for NetWare 5 that is enabled for NDS

TM

 and supports 

failover, failback, and migration (load balancing) of individually managed 
cluster resources.

Product Features

NetWare Cluster Services includes several important features to help you 
ensure and manage the availability of your network resources. These include:

Support for shared disk configurations or local disk configurations.

Multinode all-active cluster (up to 32 nodes). Any NetWare server in the 
cluster can restart resources (applications, services, IP addresses, and 
volumes) from a failed server in the cluster.

Single point of administration through a Java-based ConsoleOne

TM

 

cluster configuration and monitoring GUI.

The ability to tailor a cluster to the specific applications and hardware 
infrastructure that fit your organization.

Dynamic assignment and reassignment of server storage on an as- 
needed basis.

Summary of Contents for D7171A - NetServer - LPr

Page 1: ...Fi na l...

Page 2: ...oduct may require export authorization from the U S Department of Commerce prior to exporting from the U S or Canada t r a d e m a r k s Novell and NetWare and GroupWise are registered trademarks of N...

Page 3: ...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...

Page 4: ...t 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...

Page 5: ...ystem that ensures high availability and manageability of critical network resources including data volumes applications server licenses and services It is a multinode NDS enabled clustering product f...

Page 6: ...vi Overview and Installation...

Page 7: ...cludes several important features to help you ensure and manage the availability of your network resources These include Support for shared disk configurations or local disk configurations Multinode a...

Page 8: ...load requirements thus manually load balance the cluster are also important benefits of NetWare Cluster Services An equally important benefit of implementing NetWare Cluster Services is that you can r...

Page 9: ...all registered resources to detect failure Suppose Web Server 1 experiences hardware or software problems and the users depending on Web Server 1 for Internet access e mail and information lose their...

Page 10: ...Web server 1 on Web Server 2 and Web Server 3 as specified In this example the failover process happened quickly and users regained access to the Internet Web site information and e mail within second...

Page 11: ...ver This gives network users continuous access to the volumes on the shared disk subsystem Typical resources might include data volumes applications server licenses and services The following figure s...

Page 12: ...e Cluster Services software running on each NetWare 5 server in the cluster A shared disk subsystem connected to all servers in the cluster optional but recommended for most configurations High speed...

Page 13: ...same server At least one local disk device not shared for volume SYS on each server It is recommended the client machine used to manage the cluster be at least 300 MHz or above and have at least 90 MB...

Page 14: ...disk system is larger than 10 GB you may need more free space The shared disk system is properly set up and functional according to the manufacturer s instructions Prior to installation verify that a...

Page 15: ...es that cluster volumes don t accidentally get mounted on multiple servers in the cluster which would cause data corruption Without this command the MOUNT ALL command could be run from any server cons...

Page 16: ...In order for users to get connections to servers in the cluster CUALs need to be accessible to User objects This means individual CUALs need to be placed at or above the user context in the NDS tree...

Page 17: ...e list Then click Next 4 Enter the name of the server you want to add to the cluster or browse and select one from the list and then click Add to Cluster Repeat this step for every server you want to...

Page 18: ...one 10 user CUAL Cluster Server licenses are the only licenses required for most MLA customers Additional CUALs Server Base License Upgrades and Cluster Server Licenses can be obtained from your Novel...

Page 19: ...wing line nodeid 123 45 67 89 6 If you don t reserve future nodes each time you want to add a new node you will need to run the installation program again and also temporarily remove all existing serv...

Page 20: ...each server in the cluster except the new server or servers you have just added This reloads NetWare Cluster Services software on existing cluster servers and causes them to rejoin the cluster The exi...

Page 21: ...VOLUME ALL command in the AUTOEXEC NCF file To manually activate a non shared volume type NSS ACTIVATE VOL at the server console prompt Replace VOL with the volume name You will then need to manually...

Page 22: ...and Netscape Enterprise Server as well as a generic IP SERVICE template The generic IP SERVICE template can be used when configuring certain server applications to run on your cluster You can edit and...

Page 23: ...itional If you are not using a template for the resources continue with Configure Load Scripts on page 17 If you are not using a template you must complete the process for creating the cluster resourc...

Page 24: ...If the script does not complete within the specified time the resource becomes idle Configure Unload Scripts Depending on your cluster application or resource you can add an unload script to specify...

Page 25: ...ource will not automatically failback to any other servers in the cluster except the preferred node Set the failover mode to Manual if you want to intervene after a failure occurs and before the resou...

Page 26: ...own arrow buttons to change the failover order of the servers assigned to the resource or volume Configuration Settings Depending on your needs and cluster setup some additional configuration may be r...

Page 27: ...ership and Timeout Properties To edit Quorum Membership and Timeout properties in ConsoleOne right click the Cluster object and select Properties This will bring up the Cluster Object Property page Se...

Page 28: ...the first node brought online in the cluster but if that node fails any of the other nodes in the cluster can become master To view or edit Cluster Protocol properties in ConsoleOne right click the C...

Page 29: ...uster Port Properties The default cluster port number is 7023 and is automatically assigned when the cluster is created The cluster port number does not need to be changed unless there is a conflict c...

Page 30: ...application by putting it on a faster machine Migrating resources allows you to balance the load and evenly distribute applications among the servers in your cluster 1 In ConsoleOne browse and select...

Page 31: ...the process of loading or unloading The yellow ball in the middle of the server icon designates the master server in the cluster The master server is initially the first server in the cluster but anot...

Page 32: ...resource problems have been resolved the resource can be put back online returned to the running state Unloading The resource is in the process of unloading from the server it was running on None Run...

Page 33: ...volname PURGE is used to delete bad Distinguished Names DNs in the TRUSTMIG FIL file You must first manually mount the volume before using TRUSTOOL with the PURGE option This will rename TRUSTMIG FIL...

Page 34: ...ee rights to that volume If you experience errors when a volume fails over and its trustees migrate to the new server you will need to run TRUSTOOL with the PURGE option to delete the user from the tr...

Reviews: