HP XC System Software Administration Guide Version 3.2

Table of Contents
About This Document.......................................................................................................19
Intended Audience................................................................................................................................19
New and Changed Information in This Edition...................................................................................19
Typographic Conventions.....................................................................................................................20
HP XC and Related HP Products Information.....................................................................................21
Related Information..............................................................................................................................22
Manpages..............................................................................................................................................25
HP Encourages Your Comments..........................................................................................................26
1 HP XC Administration Environment............................................................................27
1.1 Understanding Nodes, Services, and Roles....................................................................................27
1.1.1 Nodes.......................................................................................................................................27
1.1.1.1 Node Types......................................................................................................................27
1.1.1.2 Local Storage...................................................................................................................28
1.1.2 Services....................................................................................................................................28
1.1.3 Roles........................................................................................................................................29
1.2 File System.......................................................................................................................................29
1.2.1 Key Operating System Directories..........................................................................................30
1.2.1.1 Systemwide Directory, /hptc_cluster..............................................................................31
1.2.1.2 HP XC System Software Directory, /opt/hptc.................................................................31
1.2.1.3 HP XC Service Configuration Files.................................................................................32
1.2.2 Log Files..................................................................................................................................32
1.3 HP XC Command Environment......................................................................................................33
1.3.1 HP XC Command Set..............................................................................................................33
1.3.2 The nodelist Parameter............................................................................................................36
1.3.3 Executing a Command on Multiple Nodes.............................................................................36
1.3.3.1 Using the pdsh Shell........................................................................................................36
1.3.3.2 Using the cexec Command..............................................................................................37
1.4 Configuration and Management Database.....................................................................................38
1.5 HP XC Configuration File Guidelines.............................................................................................38
1.5.1 Linux Configuration Files.......................................................................................................38
1.5.2 Configuration Files..................................................................................................................39
1.5.2.1 HP XC Configuration Files..............................................................................................39
1.5.3 Configuration Files in Imaged Nodes.....................................................................................40
1.6 Installation and Software Distribution............................................................................................41
1.6.1 Determining the Installation Type..........................................................................................41
1.6.2 Software Distribution..............................................................................................................41
1.7 Improved Availability.....................................................................................................................41
1.8 Networking......................................................................................................................................41
1.8.1 Linux Virtual Server for HP XC Cluster Alias........................................................................42
1.8.2 Network Time Protocol...........................................................................................................42
1.8.3 Network Address Translation.................................................................................................42
1.8.4 Network Information Service..................................................................................................42
1.9 Modulefiles......................................................................................................................................43
1.10 Security..........................................................................................................................................43
1.10.1 Administrator Passwords......................................................................................................44
1.10.2 Firewall..................................................................................................................................44
1.10.3 Secure Shell (ssh)...................................................................................................................44
1.11 Recommended Administrative Tasks............................................................................................44
Table of Contents 3