IBM Certification Study Guide - PSeries HACMP For AIX
Front coverIBMCertification Study Guide pSeries HACMP for AIXUpdate new features for the latestversion of HACMP for AIXValuable guide for HACMP forAIX administratorsGet ready for pSeries HACMPfor AIX certificationJesper GullbergMariusz GiepardaKyeongWon Jeongibm.com/redbooks
International Technical Support OrganizationIBM Certification Study Guide pSeries HACMP for AIXNovember 2001SG24-6187-00
Take Note! Before using this information and the product it supports, be sure to read thegeneral information in “Special notices” on page 313.First Edition (November 2001)This edition applies to IBM HACMP and HACMP/Enhanced Scalability (HACMP/ES) for AIXVersion 4.4.1, Program Number 5765-E54, for use with the AIX Operating System, and is basedon information available in October 2001.Comments may be addressed to:IBM Corporation, International Technical Support OrganizationDept. JN9B Building 003 Internal Zip 283411400 Burnet RoadAustin, Texas 78758-3493When you send information to IBM, you grant IBM a non-exclusive right to use or distribute theinformation in any way it believes appropriate without incurring any obligation to you. Copyright International Business Machines Corporation 2001. All rights reserved.Note to U.S Government Users – Documentation related to restricted rights – Use, duplication or disclosure is subject torestrictions set forth in GSA ADP Schedule Contract with IBM Corp.
ContentsFigures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ixTables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiPreface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiiiThe team that wrote this redbook . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xivSpecial notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xviIBM trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xviComments welcome . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xviChapter 1. Certification overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11.1 IBM Certified Systems Expert - pSeries HACMP for AIX . . . . 21.1.1 Certification requirements (two tests) . . . . . . . . . . . . . . . . . . . . . . . . . 21.2 Certification exam objectives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31.3 Certification education courses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Chapter 2. Cluster planning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112.1 High availability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122.2 Cluster nodes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132.2.1 Operating system level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142.2.2 CPU options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152.2.3 Disk storages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162.2.4 Cluster node considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172.3 Cluster networks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192.3.1 TCP/IP networks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192.3.2 Non-TCP/IP networks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 232.4 Cluster disks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 242.4.1 SSA disks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 252.4.2 SCSI disks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 322.4.3 Fibre Channel adapters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 342.5 Resource planning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 402.5.1 Resource group options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 412.5.2 Shared LVM components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 432.5.3 IP address takeover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 482.5.4 NFS exports and NFS mounts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 562.6 Application planning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 562.6.1 Performance requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 572.6.2 Application startup and shutdown routines . . . . . . . . . . . . . . . . . . . . 572.6.3 Licensing methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58 Copyright IBM Corp. 2001iii
2.6.4 Coexistence with other applications . . . . . . . . . . . . . . . . . . . . . . . . . 582.6.5 Critical/non-critical prioritization . . . . . . . . . . . . . . . . . . . . . . . . . . . . 582.7 Customization planning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 592.7.1 Event customization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 592.7.2 Error notification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 602.8 User ID planning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 622.8.1 Cluster user and group IDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 632.8.2 Cluster passwords. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 642.8.3 User home directory planning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64Chapter 3. Cluster hardware and software preparation. . . . . . . . . . . . . . . 673.1 Cluster node setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 683.1.1 Adapter slot placement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 683.1.2 rootvg mirroring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 703.1.3 AIX parameter settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 733.2 Network connection and testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 763.2.1 TCP/IP networks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 763.2.2 Non TCP/IP networks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 793.3 Cluster disk setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 823.3.1 SSA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 823.3.2 SCSI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 893.4 Shared LVM component configuration . . . . . . . . . . . . . . . . . . . . . . . . 963.4.1 Creating shared VGs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 963.4.2 Creating shared LVs and file systems. . . . . . . . . . . . . . . . . . . . . . . . 993.4.3 Mirroring strategies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1013.4.4 Importing to other nodes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1023.4.5 Quorum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1033.4.6 Alternate method - TaskGuide . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106Chapter 4. HACMP installation and cluster definition . . . . . . . . . . . . . . . 1074.1 Installing HACMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1084.1.1 First time install . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1084.1.2 Upgrading from a previous version . . . . . . . . . . . . . . . . . . . . . . . . . 1124.1.3 Migrating from HANFS to HACMP Version 4.4.1 . . . . . . . . . . . . . . 1164.1.4 Installing the concurrent resource manager . . . . . . . . . . . . . . . . . . 1184.1.5 Problems during the installation . . . . . . . . . . . . . . . . . . . . . . . . . . . 1194.2 Defining cluster topology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1204.2.1 Defining the cluster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1204.2.2 Defining nodes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1214.2.3 Defining networks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1224.2.4 Defining adapters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1244.2.5 Configuring network modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1284.2.6 Synchronizing the cluster definition across nodes . . . . . . . . . . . . . 129ivIBM Certification Study Guide - pSeries HACMP for AIX
4.3 Defining resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1314.3.1 Configuring resource groups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1324.4 Initial testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1394.4.1 clverify . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1394.4.2 Initial startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1404.4.3 Takeover and reintegration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1414.5 Cluster snapshot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1424.5.1 Applying a cluster snapshot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144Chapter 5. Cluster customization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1455.1 Event customization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1465.1.1 Predefined cluster events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1465.1.2 Pre- and post-event processing . . . . . . . . . . . . . . . . . . . . . . . . . . . 1515.1.3 Event notification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1525.1.4 Event recovery and retry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1525.1.5 Notes on customizing event processing . . . . . . . . . . . . . . . . . . . . . 1525.1.6 Event emulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1535.2 Error notification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1535.3 Network modules services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1545.4 NFS considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1555.4.1 Creating shared volume groups . . . . . . . . . . . . . . . . . . . . . . . . . . . 1555.4.2 Exporting NFS file systems and directories . . . . . . . . . . . . . . . . . . 1565.4.3 NFS mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1565.4.4 Cascading takeover with cross mounted NFS file systems . . . . . . 157Chapter 6. Cluster testing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1616.1 Node verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1626.1.1 Device state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1626.1.2 System parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1636.1.3 Process state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1636.1.4 Network state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1636.1.5 LVM state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1666.1.6 Cluster state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1666.2 Simulate errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1686.2.1 Adapter failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1686.2.2 Node failure/reintegration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1726.2.3 Network failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1796.2.4 Disk failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1806.2.5 Application failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1826.2.6 Configure the process application monitor parameters. . . . . . . . . . 1846.2.7 Configure the custom application monitor parameters . . . . . . . . . . 186Chapter 7. Cluster troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1937.1 Cluster log files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195Contentsv
7.2 config too long . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1967.3 Deadman switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1977.3.1 Tuning the system using I/O pacing . . . . . . . . . . . . . . . . . . . . . . . . 1997.3.2 Extending the syncd frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2007.3.3 Increase amount of memory for communications subsystem . . . . . 2017.3.4 Changing the Failure Detection Rate . . . . . . . . . . . . . . . . . . . . . . . 2027.4 ES 4.4.0 and later creates entries in AIX error log . . . . . . . . . . . . . . 2067.4.1 The topology services subsystem . . . . . . . . . . . . . . . . . . . . . . . . . . 2077.4.2 Missing heartbeat creates entries in AIX error log . . . . . . . . . . . . . 2107.5 Node isolation and partitioned clusters . . . . . . . . . . . . . . . . . . . . . . . 2137.6 The DGSP message . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2137.7 Troubleshooting SSA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2147.7.1 SSA pdisk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2157.7.2 SSA adapters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2207.7.3 SSA problem determination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2207.7.4 Replace failure detected SSA disk device . . . . . . . . . . . . . . . . . . . 2217.8 User ID problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2227.9 Troubleshooting strategy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222Chapter 8. Cluster management and administration . . . . . . . . . . . . . . . . 2258.1 Monitoring the cluster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2268.1.1 The clstat command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2278.1.2 Monitoring clusters using HAView. . . . . . . . . . . . . . . . . . . . . . . . . . 2308.1.3 Monitoring HACMP cluster with Tivoli . . . . . . . . . . . . . . . . . . . . . . . 2308.1.4 Cluster log files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2328.1.5 Manage the HACMP log files directory . . . . . . . . . . . . . . . . . . . . . . 2338.1.6 Change a HACMP log file directory . . . . . . . . . . . . . . . . . . . . . . . . 2348.2 Starting and stopping HACMP on a node or a client . . . . . . . . . . . . . 2388.2.1 HACMP daemons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2388.2.2 Starting cluster services on a node . . . . . . . . . . . . . . . . . . . . . . . . . 2418.2.3 Stopping cluster services on a node . . . . . . . . . . . . . . . . . . . . . . . . 2438.2.4 Starting and stopping cluster services on clients . . . . . . . . . . . . . . 2468.3 Replacing failed components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2478.3.1 Nodes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2478.3.2 Adapters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2488.3.3 Disks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2488.4 Changing shared LVM components . . . . . . . . . . . . . . . . . . . . . . . . . 2508.4.1 Manual update . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2518.4.2 Lazy Update . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2528.4.3 C-SPOC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2538.4.4 TaskGuide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2548.5 Changing cluster resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2558.5.1 Add/change/remove cluster resources . . . . . . . . . . . . . . . . . . . . . . 256viIBM Certification Study Guide - pSeries HACMP for AIX
8.5.2 Synchronize cluster resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2578.5.3 DARE resource migration utility . . . . . . . . . . . . . . . . . . . . . . . . . . . 2598.5.4 CWOF versus other resource groups policies . . . . . . . . . . . . . . . . 2628.5.5 Using the cldare command to migrate resources . . . . . . . . . . . . . . 2638.6 Software maintenance for an HACMP cluster . . . . . . . . . . . . . . . . . . 2728.7 Backup strategies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2758.7.1 Split-mirror backups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2758.7.2 Using events to schedule a backup . . . . . . . . . . . . . . . . . . . . . . . . 2778.8 User management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2778.8.1 Listing users on all cluster nodes . . . . . . . . . . . . . . . . . . . . . . . . . . 2788.8.2 Adding user accounts on all cluster nodes . . . . . . . . . . . . . . . . . . . 2788.8.3 C-SPOC password enhancement . . . . . . . . . . . . . . . . . . . . . . . . . . 2788.8.4 Set or change a password using C-SPOC . . . . . . . . . . . . . . . . . . . 2798.8.5 Changing attributes of users in a cluster . . . . . . . . . . . . . . . . . . . . . 2808.8.6 Removing users from a cluster . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2818.8.7 Managing group accounts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2818.8.8 C-SPOC log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 282Chapter 9. Special RS/6000 SP topics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2839.1 High availability control workstation (HACWS) . . . . . . . . . . . . . . . . . 2849.1.1 Hardware requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2849.1.2 Software requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2859.1.3 Configuring the backup CWS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2859.1.4 Install high availability software . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2869.1.5 HACWS configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2869.1.6 Setup and test HACWS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2879.2 Kerberos security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2889.2.1 Configuring Kerberos security with HACMP . . . . . . . . . . . . . . . . . . 2899.2.2 Enhanced security option in PSSP 3.2 . . . . . . . . . . . . . . . . . . . . . . 2909.2.3 Configure HACMP cluster security mode . . . . . . . . . . . . . . . . . . . . 2919.3 VSDs - RVSDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2939.3.1 Virtual Shared Disks (VSDs) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2939.3.2 Recoverable virtual shared disk . . . . . . . . . . . . . . . . . . . . . . . . . . . 2969.3.3 Concurrent Virtual Shared Disks instead of RVSD . . . . . . . . . . . . . 2989.4 SP switch as an HACMP network . . . . . . . . . . . . . . . . . . . . . . . . . . . 3009.4.1 SP Switch support. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3009.4.2 Switch basics within HACMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3009.4.3 Eprimary management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3019.4.4 Switch failures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 302Chapter 10. HACMP classic versus HACMP/ES . . . . . . . . . . . . . . . . . . . . 30310.1 HACMP classic. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30410.2 HANFS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 304Contentsvii
10.3 HACMP/ES and ESCRM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30510.3.1 IBM RISC System Cluster Technology (RSCT) . . . . . . . . . . . . . . 30510.3.2 Enhanced cluster security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30710.4 Similarities and differences. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30710.5 Decision criteria . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 308Related publications . . . . . . . . . . . . . . . . . . . . . .IBM Redbooks . . . . . . . . . . . . . . . . . . . . . . . . . . . .Other resources . . . . . . . . . . . . . . . . . . . . . . . .Referenced Web sites . . . . . . . . . . . . . . . . . . . . . .How to get IBM Redbooks . . . . . . . . . . . . . . . . . . .IBM Redbooks collections . . . . . . . . . . . . . . . . .309309309310311311Special notices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 313Abbreviations and acronyms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 315Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 317viiiIBM Certification Study Guide - pSeries HACMP for AIX
-6 Copyright IBM Corp. 2001Basic SSA configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25Point-to-point topology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35Switched Fabric topology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36Arbitrated loop topology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38Point-to-point loop topology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39Hot-standby configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44Mutual takeover configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45Third-party takeover configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47Single-network setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50Dual-network setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51Point-to-point connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52Secondary PCI bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68Multiple primary PCI buses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69Connecting networks to a hub . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 777135-110 RAIDiant arrays connected on two shared 8-Bit SCSI . . . . . 917135-110 RAIDiant arrays connected on two shared 16-Bit SCSI . . . . 92Termination on the SCSI-2 Differential Controller . . . . . . . . . . . . . . . . . 93Termination on the SCSI-2 Differential Fast/Wide Adapters . . . . . . . . . 94Logical ring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121NFS crossmount example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159Process application monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183Custom application monitoring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1837133-D40/T40 loop configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215Tivoli output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 231Applying a PTF to a cluster node . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 274A simple HACWS environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 285VSD architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 293VSD state transitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 295RVSD function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 296RVSD subsystem and HA infrastructure . . . . . . . . . . . . . . . . . . . . . . . 298CVSD and RSVD I/O example. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 299ix
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23-33-43-53-67-1 Copyright IBM Corp. 2001HACMP System Administration 1: Planning and Implementation . . . . . . 6HACMP System Administration 2: Maintenance and Migration . . . . . . . . 7HACMP System Administration 3: Problem Determination . . . . . . . . . . . 8HACMP Certification Preparation Workshop . . . . . . . . . . . . . . . . . . . . . . 9AIX Version 4 HACMP System Administration . . . . . . . . . . . . . . . . . . . 10Required OS level for HACMP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14PSSP versions for SP installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14HACMP supported RS/6000 models . . . . . . . . . . . . . . . . . . . . . . . . . . . 15HACMP supported SP platforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15HACMP requirements for concurrent access configuration . . . . . . . . . . 16Eliminating cluster objects as single points of failure . . . . . . . . . . . . . . 18SSA adapters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26The advantages and disadvantages of the different RAID levels . . . . . 30smit mkvg options (non-concurrent). . . . . . . . . . . . . . . . . . . . . . . . . . . . 97smit mkvg options (concurrent, non-RAID) . . . . . . . . . . . . . . . . . . . . . . 98smit mkvg options (concurrent, RAID) . . . . . . . . . . . . . . . . . . . . . . . . . . 99smit crjfs options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100smit importvg options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102smit crjfs options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103HACMP log files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195xi
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PrefaceThe AIX and IBM pSeries (RS/6000) Certifications offered through theProfessional Certification Program from IBM are designed to validate the skillsrequired of technical professionals who work in the powerful and often complexenvironments of AIX and IBM pSeries (RS/6000). A complete set ofprofessional certifications is available. It includes: IBM Certified AIX User IBM Certified Specialist - AIX System Administration IBM Certified Specialist - AIX System Support IBM Certified Specialist - Business Intelligence for RS/6000 IBM Certified Specialist - Domino for RS/6000 IBM Certified Specialist - pSeries AIX System Administration IBM Certified Specialist - pSeries AIX System Support IBM Certified Specialist - pSeries Solution Sales IBM Certified Specialist - RS/6000 Solution Sales IBM Certified Specialist - RS/6000 SP and PSSP V3 RS/6000 SP - Sales Qualification IBM Certified Specialist - Web Server for RS/6000 IBM Certified Systems Expert - pSeries HACMP for AIX IBM Certified Advanced Technical Expert - RS/6000 AIXEach certification is developed by following a thorough and rigorous process toensure the exam is applicable to the job role and is a meaningful and appropriateassessment of skill. Subject matter experts who successfully perform the jobparticipate throughout the entire development process. These job incumbentsbring a wealth of experience into the development process, thus making theexams much more meaningful than the typical test, which only capturesclassroom knowledge. These subject matter experts ensure the exams arerelevant to the real world and that the test content is both useful and valid. Theresult is a certification of value that appropriately measures the skill required toperform the job role.This redbook is designed as a study guide for professionals wishing to preparefor the certification exam to achieve IBM Certified Systems Expert pSeries HACMP for AIX. Copyright IBM Corp. 2001xiii
The pSeries HACMP for AIX certification validates the skills required tosuccessfully plan, install, configure, and support an HACMP for AIX clusterinstallation. The requirements for this include a working knowledge of thefollowing:
Certification Study Guide - pSeries HACMP for AIX Jesper Gullberg Mariusz Gieparda KyeongWon Jeong Update new features for the latest version of HACMP for AIX Valuable guide for HACMP for AIX administrators Get ready for pSeries HACMP for AIX certification Front cover.
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the Field Technical Sales Support group based in Rome, Italy. For seven years, he was an IBM eServer pSeries Systems Product Engineer, supporting Web Server Sales Organization in EMEA, IBM Sales, IBM Business Partners, Technical Support Organizations, and IBM Dublin eServer Manufact
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