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Troubleshooting
Specification
Install
Adapter Slot Placement
Hot-Standby Configuration
Connecting Networks to a Hub
User ID Problems
Diagnostics
Cluster Disk Setup
Clstat Command
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IBM Certification Study Guide AIX HACMP
SG24-5131-00
SG24-5131-00
Printed in the U.S.A.
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Contents
AIX Hacmp
Page
AIX Hacmp
Take Note
Contents
Iv IBM Certification Study Guide AIX Hacmp
Page
Vi IBM Certification Study Guide AIX Hacmp
Appendix A. Special Notices
Vii
Viii IBM Certification Study Guide AIX Hacmp
Figures
IBM Certification Study Guide AIX Hacmp
Tables
Xii IBM Certification Study Guide AIX Hacmp
Preface
Xiii
Team That Wrote This Redbook
Comments Welcome
Your comments are important to us
Xvi IBM Certification Study Guide AIX Hacmp
Certification Overview
IBM Certified Specialist AIX Hacmp
Certification Requirement two Tests
Recommended Prerequisites
Preinstallation
Certification Exam Objectives
Hacmp Implementation
System Management
Certification Education Courses
Following table outlines information about the next course
IBM Certification Study Guide AIX Hacmp
Cluster Planning
Cluster Nodes
CPU Options
Cluster Node Considerations
Cluster Planning
Switch adapter is onboard and does not need an extra slot
Cluster Networks
1 TCP/IP Networks
Supported TCP/IP Network Types
Slip Socc
Special Network Considerations
Cluster Planning
Non-TCPIP Networks
Supported Non-TCP/IP Network Types
Special Considerations
Serial RS232
Cluster Disks
SSA Disks
Target-mode Scsi
Target-mode SSA
Host
Specification
Disk Capacities
1.2 Supported and Non-Supported Adapters
Rules for SSA Loops
Cluster Planning
RAID vs. Non-RAID RAID Technology
RAID Level
RAID Levels 2
RAID on the 7133 Disk Subsystem
Advantages
Scsi Disks
Disks
Subsystems
Advantages Disadvantages
Resource Planning
Resource Group Options
Cluster Planning
Hot-Standby Configuration
Shared LVM Components
Rotating Standby Configuration
Hot-Standby Configuration
Mutual Takeover Configuration
Mutual Takeover Configuration
Third-Party Takeover Configuration
Third-Party Takeover Configuration
Concurrent Disk Access Configurations
IP Address Takeover
Network Topology
Single Network
Dual Network
Point-to-Point Connection
Networks
Network Name
Network Attribute
Network Adapters
Adapter Label
Adapter Function
Cluster Planning
Defining Hardware Addresses
NFS Exports and NFS Mounts
Application Planning
Performance Requirements
Application Startup and Shutdown Routines
Licensing Methods
Coexistence with other Applications
Critical/Non-Critical Prioritizations
Customization Planning
Event Customization
Special Application Requirements
Event Notification
Error Notification
Predictive Event Error Correction
Sample Screen for Add a Notification Method
Notification
Application Failure
User ID Planning
Cluster User and Group IDs
Cluster Passwords
Home Directories on Shared Volumes
User Home Directory Planning
NFS-Mounted Home Directories
NFS-Mounted Home Directories on Shared Volumes
Cluster Node Setup
Adapter Slot Placement
Cluster Hardware and Software Preparation
Rootvg Mirroring
IBM Certification Study Guide AIX Hacmp
Procedure
This is so that the Quorum OFF functionality takes effect
AIX Prerequisite LPPs
Necessary Apar Fixes
AIX Parameter Settings
4.1 I/O Pacing
Checking Network Option Settings
Cron and NIS Considerations
Editing the /.rhosts File
Network Connection and Testing
Cabling Considerations
Connecting Networks to a Hub
IP Addresses and Subnets
Testing
Non TCP/IP Networks
Configuring RS232
Configuring Target Mode Scsi
Configuring Target Mode SSA
Testing RS232 and Target Mode Networks
Cluster Disk Setup
1 SSA
Cabling
AIX Configuration
Adapter Router
Adapter Definitions
Disk Definitions
Diagnostics
#lsdev -Cc disk grep SSA
Upgrade Instructions
Microcode Loading
Cluster Hardware and Software Preparation
Configuring a RAID on SSA Disks
Scsi
Connecting RAID Subsystems
Scsi Adapters
RAID Enclosures
110 RAIDiant Arrays Connected on Two Shared 8-Bit Scsi Buses
Cluster Hardware and Software Preparation
#2416
Adapter Scsi ID and Termination change
Termination
F1=Help F2=Refresh
# chdev -l scsi1 -a id=6 -P
Shared LVM Component Configuration
Change/Show Characteristics of a Scsi Adapter
Creating VGs for Concurrent Access
Creating Shared VGs
Creating Non-Concurrent VGs
Physical Volume Names
Renaming a jfslog and Logical Volumes on the Source Node
Creating Shared LVs and File Systems
Adding Copies to Logical Volume on the Source Node
Testing a File System
Mirroring Strategies
Importing to Other Nodes
Changing a Volume Group’s Startup Status
Quorum
Quorum at Vary On
Quorum Enabled
Quorum Disabled
Quorum after Vary On
Disabling and Enabling Quorum
Quorum in Non-Concurrent Access Configurations
Quorum in Concurrent Access Configurations
Alternate Method TaskGuide
Forcing a Varyon
Starting the TaskGuide
IBM Certification Study Guide AIX Hacmp
Hacmp Installation and Cluster Definition
Installing Hacmp
First Time Installs
Cluster.base.server.utils
Cluster.hc
Install Server Nodes
Rebooting Servers
Upgrading From a Previous Version
Upgrade AIX on One Node
Install Hacmp 4.3 for AIX on Node a
Check Upgraded Configuration
Client-only Migration
Defining Cluster Topology
Defining the Cluster
Defining Nodes
Defining Adapters
Hacmp Installation and Cluster Definition
Node Name
Configuring Network Modules
Adding or Changing Adapters after the Initial Configuration
Synchronizing the Cluster Definition Across Nodes
Ignore Cluster
Configuring Resource Groups
Defining Resources
Configuring Resources for Resource Groups
Service IP Label
Configuring Run-Time Parameters
Defining Application Servers
Initial Testing
Clverify
Synchronizing Cluster Resources
Initial Startup
Takeover and Reintegration
Cluster Snapshot
Applying a Cluster Snapshot
Hacmp Installation and Cluster Definition
IBM Certification Study Guide AIX Hacmp
Cluster Customization
Predefined Cluster Events
Acquireserviceaddr
Acquiretakeoveraddr
Getdiskvgfs
Nodeupremote
Releaseserviceaddr
Sequence of nodedown Events
Nodedownlocal
Nodedownremote
Startserver
Network Events Networkdown
Networkup
Networkupcomplete
Configtoolong
Reconfigtopologystart
Network Adapter Events
Swapadapter
Event Recovery and Retry
Configuration Resources Cluster Events Change/Show Cluster
Pre- and Post-Event Processing
Event Notification
Event Emulator
Network Modules/Topology Services and Group Services
Creating Shared Volume Groups
NFS considerations
Exporting NFS File Systems
NFS Mounting
Cascading Takeover with Cross Mounted NFS File Systems
Creating NFS Mount Points on Clients
Caveats about Node Names and NFS
NFS Cross Mounts
Cross Mounted NFS File Systems and the Network Lock Manager
SLEEP=2
Done
Cluster Testing
Node Verification
Device State
131
System Parameters
Process State
Network State
LVM State
Cluster State
Simulate Errors
Adapter Failure
Ethernet or Token Ring Interface Failure
Switch Adapter Failure
Ethernet or Token Ring Adapter or Cable Failure
Failure of a 7133 Adapter
Re-attach the cables
Node Failure / Reintegration
AIX Crash
CPU Failure
Network Failure
2.3 TCP/IP Subsystem Failure
Disk Failure
Mirrored rootvg Disk hdisk0 Failure
4.2 7135 Disk Failure
Mirrored 7133 Disk Failure
Application Failure
IBM Certification Study Guide AIX Hacmp
Cluster Troubleshooting
Cluster Log Files
143
Configtoolong
Daemons
Deadman Switch
Tuning the System Using I/O Pacing
Extending the syncd Frequency
Increase Amount of Memory for Communications Subsystem
Changing the Failure Detection Rate
Node Isolation and Partitioned Clusters
Dgsp Message
User ID Problems
Troubleshooting Strategy
IBM Certification Study Guide AIX Hacmp
Cluster Management and Administration
Monitoring the Cluster
151
Clstat Command
Monitoring Clusters using HAView
System Error Log
3.1 /var/adm/cluster.log
3.2 /tmp/hacmp.out
3.3 /usr/sbin/cluster/history/cluster.mmdd
Starting and Stopping Hacmp on a Node or a Client
Hacmp Daemons
Cluster Manager daemon clstrmgr
Cluster Smux Peer daemon clsmuxpd
Cluster Lock Manager daemon cllockd
Starting Cluster Services on a Node
Cluster Topology Services daemon topsvcsd
Cluster Group Services daemon grpsvcsd
Cluster Information Program daemon clinfo
Stopping Cluster Services on a Node
Automatically Restarting Cluster Services
When to Stop Cluster services
Types of Cluster Stops
Graceful
Forced
Starting and Stopping Cluster Services on Clients
Maintaining Cluster Information Services on Clients
Replacing Failed Components
Nodes
Adapters
3.1 SSA/SCSI Disk Replacement RAID
Disks
Sync the volume group smit clsyncvg
Manual Update
Changing Shared LVM Components
Lazy Update
Spoc
IBM Certification Study Guide AIX Hacmp
TaskGuide
Changing Cluster Resources
TaskGuide Requirements
1 Add/Change/Remove Cluster Resources
Synchronize Cluster Resources
Dare Resource Migration Utility
Resource Migration Types
Sticky Resource Migration
Non-Sticky Resource Migration
Default Location
Locations
Node Name
Using the cldare Command to Migrate Resources
Stop Location
Using the clfindres Command
Stopping Resource Groups
Applying Software Maintenance to an Hacmp Cluster
Fallover System a Rejoins Cluster
Backup Strategies
Split-Mirror Backups
How to do a split-mirror backup
Using Events to Schedule a Backup
User Management
Listing Users On All Cluster Nodes
Adding User Accounts on all Cluster Nodes
Changing Attributes of Users in a Cluster
Removing Users from a Cluster
Managing Group Accounts
Spoc Log
IBM Certification Study Guide AIX Hacmp
Special RS/6000 SP Topics
High Availability Control Workstation Hacws
Hardware Requirements
183
Configuring the Backup CWS
Software Requirements
Install High Availability Software
Hacws Configuration
Setup and Test Hacws
Kerberos Security
Ambrose Bierce, The Enlarged Devil’s Dictionary
Configuring Kerberos Security with Hacmp Version
VSDs RVSDs
Virtual Shared Disk VSDs
Special RS/6000 SP Topics
Undefined
Recoverable Virtual Shared Disk
D e Z
Rsvd Daemons
SP Switch as an Hacmp Network
Switch Basics Within Hacmp
Switch Failures
Eprimary Management
Special RS/6000 SP Topics
IBM Certification Study Guide AIX Hacmp
Hacmp Classic vs. HACMP/ES vs. Hanfs
Hacmp for AIX Classic
Hacmp for AIX / Enhanced Scalability
199
IBM Risc System Cluster Technology Rsct
Enhanced Cluster Security
High Availability for Network File System for AIX
Similarities and Differences
Decision Criteria
Hacmp Classic vs. HACMP/ES vs. Hanfs
IBM Certification Study Guide AIX Hacmp
Appendix A. Special Notices
205
SP1
Special Notices
IBM Certification Study Guide AIX Hacmp
Appendix B. Related Publications
International Technical Support Organization Publications
Redbooks on CD-ROMs
209
Other Publications
How to Get Itso Redbooks
How IBM Employees Can Get Itso Redbooks
211
How Customers Can Get Itso Redbooks
Ibmmail
IBM Redbook Order Form
213
IBM Certification Study Guide AIX Hacmp
List of Abbreviations
215
Netbios
Index Symbols
217
HACMP/ES
219
NIS
Vgda Vgsa
Itso Redbook Evaluation
221
IBM Certification Study Guide AIX Hacmp SG24-5131-00
