HP XC System Software Administration Guide Version 3.1

Table of Contents
About This Document.......................................................................................................17
1 Intended Audience................................................................................................................................17
2 New and Changed Information in This Edition........................................................................................17
3 Typographic Conventions......................................................................................................................18
4 HP XC and Related HP Products Information..........................................................................................18
5 Related information...............................................................................................................................20
6 Manpages.............................................................................................................................................22
7 HP Encourages Your Comments.............................................................................................................23
1 HP XC Administration Environment............................................................................25
1.1 Understanding Nodes, Services, and Roles...........................................................................................25
1.1.1 Nodes.........................................................................................................................................25
1.1.1.1 Node Types.........................................................................................................................25
1.1.1.2 Local Storage.......................................................................................................................26
1.1.2 Services......................................................................................................................................26
1.1.3 Roles..........................................................................................................................................27
1.2 File System.........................................................................................................................................27
1.2.1 Key Operating System Directories................................................................................................27
1.2.1.1 Systemwide Directory, /hptc_cluster.....................................................................................28
1.2.1.2 HP XC System Software Directory, /opt/hptc.........................................................................29
1.2.1.3 HP XC Service Configuration Files.......................................................................................30
1.2.2 Log Files.....................................................................................................................................30
1.3 HP XC Command Environment...........................................................................................................30
1.3.1 HP XC Command Set..................................................................................................................31
1.3.2 The nodelist Parameter................................................................................................................33
1.3.3 Executing a Command on Multiple Nodes....................................................................................33
1.3.3.1 Using the pdsh Shell............................................................................................................33
1.3.3.2 Using the cexec Command...................................................................................................34
1.4 Configuration and Management Database............................................................................................34
1.5 HP XC Configuration File Guidelines...................................................................................................35
1.5.1 Linux Configuration Files............................................................................................................35
1.5.2 Configuration Files......................................................................................................................36
1.5.2.1 HP XC Configuration Files...................................................................................................36
1.5.3 Configuration Files in Imaged Nodes............................................................................................37
1.6 Installation and Software Distribution..................................................................................................37
1.6.1 Determining the Installation Type................................................................................................37
1.6.2 Software Distribution..................................................................................................................38
1.7 Improved Availability.........................................................................................................................38
1.8 Networking........................................................................................................................................38
1.8.1 Linux Virtual Server for HP XC Cluster Alias................................................................................38
1.8.2 Network Time Protocol................................................................................................................38
1.8.3 Network Address Translation......................................................................................................39
1.8.4 Network Information Service.......................................................................................................39
1.9 Modulefiles........................................................................................................................................39
1.10 Security............................................................................................................................................40
1.10.1 Administrator Passwords...........................................................................................................40
1.10.2 Firewall.....................................................................................................................................40
1.10.3 Secure Shell (ssh).......................................................................................................................40
1.11 Recommended Administrative Tasks..................................................................................................41
2 Improved Availability...................................................................................................43
2.1 Purpose of the Availability Tool............................................................................................................43
2.2 Services Eligible for Improved Availability............................................................................................43
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