HP XC System Software Administration Guide Version 3.2.1

Table of Contents
About This Document.......................................................................................................19
Intended Audience................................................................................................................................19
New and Changed Information in This Edition...................................................................................19
Typographic Conventions.....................................................................................................................19
HP XC and Related HP Products Information.....................................................................................20
Related Information..............................................................................................................................22
Manpages..............................................................................................................................................25
HP Encourages Your Comments..........................................................................................................25
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........................................................................................................................................30
1.2 File System.......................................................................................................................................30
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.................................................................32
1.2.1.3 HP XC Service Configuration Files.................................................................................33
1.2.2 Log Files..................................................................................................................................33
1.3 HP XC Command Environment......................................................................................................34
1.3.1 HP XC Command Set..............................................................................................................34
1.3.2 The nodelist Parameter............................................................................................................37
1.3.3 Executing a Command on Multiple Nodes.............................................................................37
1.3.3.1 Using the pdsh Shell........................................................................................................37
1.3.3.2 Using the cexec Command..............................................................................................38
1.4 Configuration and Management Database.....................................................................................39
1.5 HP XC Configuration File Guidelines.............................................................................................39
1.5.1 Linux Configuration Files.......................................................................................................39
1.5.2 Configuration Files..................................................................................................................40
1.5.2.1 HP XC Configuration Files..............................................................................................40
1.5.3 Configuration Files in Imaged Nodes.....................................................................................41
1.6 Installation and Software Distribution............................................................................................42
1.6.1 Determining the Installation Type..........................................................................................42
1.6.2 Software Distribution..............................................................................................................42
1.7 Improved Availability.....................................................................................................................42
1.8 Networking......................................................................................................................................42
1.8.1 Linux Virtual Server for HP XC Cluster Alias........................................................................43
1.8.2 Network Time Protocol...........................................................................................................43
1.8.3 Network Address Translation.................................................................................................43
1.8.4 Network Information Service..................................................................................................43
1.9 Modulefiles......................................................................................................................................44
1.10 Security..........................................................................................................................................44
1.10.1 Administrator Passwords......................................................................................................45
1.10.2 Firewall..................................................................................................................................45
1.10.3 Secure Shell (ssh)...................................................................................................................45
1.11 Recommended Administrative Tasks............................................................................................45
Table of Contents 3