HP XC System Software Administration Guide Version 4.0

Table Of Contents
Table of Contents
About This Document.......................................................................................................15
Intended Audience................................................................................................................................15
New and Changed Information in This Edition...................................................................................15
Typographic Conventions.....................................................................................................................16
HP XC and Related HP Products Information.....................................................................................17
Related Information..............................................................................................................................18
Manpages..............................................................................................................................................21
HP Encourages Your Comments..........................................................................................................21
1 HP XC Administration Environment............................................................................23
1.1 Understanding Nodes, Services, and Roles....................................................................................23
1.1.1 Nodes.......................................................................................................................................23
1.1.1.1 Node Types......................................................................................................................23
1.1.1.2 Local Storage...................................................................................................................24
1.1.2 Services....................................................................................................................................24
1.1.3 Roles........................................................................................................................................26
1.2 File System.......................................................................................................................................26
1.2.1 Key Operating System Directories..........................................................................................26
1.2.1.1 Systemwide Directory, /hptc_cluster..............................................................................27
1.2.1.2 HP XC System Software Directory, /opt/hptc.................................................................28
1.2.1.3 HP XC Service Configuration Files.................................................................................29
1.2.2 Log Files..................................................................................................................................29
1.3 HP XC Command Environment......................................................................................................30
1.3.1 HP XC Command Set..............................................................................................................30
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.....................................................................................35
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.....................................................................................38
1.6 Installation and Software Distribution............................................................................................38
1.6.1 Determining the Installation Type..........................................................................................38
1.6.2 Software Distribution..............................................................................................................38
1.7 Improved Availability.....................................................................................................................38
1.8 Networking......................................................................................................................................39
1.8.1 Linux Virtual Server for HP XC Cluster Alias........................................................................39
1.8.2 Network Time Protocol...........................................................................................................39
1.8.3 Network Address Translation.................................................................................................39
1.8.4 Network Information Service..................................................................................................40
1.9 Modulefiles......................................................................................................................................40
1.10 Security..........................................................................................................................................41
1.10.1 Administrator Passwords......................................................................................................41
1.10.2 Firewall..................................................................................................................................41
1.10.3 Secure Shell (ssh)...................................................................................................................41
1.11 Recommended Administrative Tasks............................................................................................42
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