HP XC System Software Administration Guide Version 4.0
Table Of Contents
- XC Administration Guide
- Table of Contents
- About This Document
- 1 HP XC Administration Environment
- 1.1 Understanding Nodes, Services, and Roles
- 1.2 File System
- 1.3 HP XC Command Environment
- 1.4 Configuration and Management Database
- 1.5 HP XC Configuration File Guidelines
- 1.6 Installation and Software Distribution
- 1.7 Improved Availability
- 1.8 Networking
- 1.9 Modulefiles
- 1.10 Security
- 1.11 Recommended Administrative Tasks
- 2 Improved Availability
- 3 Starting Up and Shutting Down the HP XC System
- 4 Managing and Customizing System Services
- 4.1 HP XC System Services
- 4.2 Displaying Services Information
- 4.3 Restarting a Service
- 4.4 Stopping a Service
- 4.5 Global System Services
- 4.6 Customizing Services and Roles
- 4.6.1 Overview of the HP XC Services Configuration
- 4.6.2 Service Configuration Sequence of Operation
- 4.6.3 Assigning Roles with the cluster_config Utility
- 4.6.4 The *config.d Directories
- 4.6.5 Configuration Scripts
- 4.6.6 Understanding Global Configuration Scripts
- 4.6.7 Advance Planning
- 4.6.8 Editing the roles_services.ini File
- 4.6.9 Creating a service.ini File
- 4.6.10 Adding a New Service
- 4.6.11 Verifying a New Service
- 5 Managing Licenses
- 6 Managing the Configuration and Management Database
- 6.1 Accessing the Configuration and Management Database
- 6.2 Querying the Configuration and Management Database
- 6.3 Finding and Setting System Attribute Values
- 6.4 Backing Up the Configuration Database
- 6.5 Restoring the Configuration Database from a Backup File
- 6.6 Archiving Sensor Data from the Configuration Database
- 6.7 Restoring the Sensor Data from an Archive File
- 6.8 Purging Sensor Data from the Configuration and Management Database
- 6.9 Dumping the Configuration and Management Database
- 7 Monitoring the System
- 7.1 Monitoring Tools
- 7.2 Monitoring Strategy
- 7.3 Displaying System Environment Data
- 7.4 Monitoring Disks
- 7.5 Displaying System Statistics
- 7.6 Logging Node Events
- 7.7 The collectl Utility
- 7.8 Using HP Graph To Display Network Bandwidth and System Use
- 7.9 The resmon Utility
- 7.10 The kdump Mechanism and the crash Utility
- 8 Monitoring the System with Nagios
- 8.1 Nagios Overview
- 8.2 Using the Nagios Web Interface
- 8.3 Adjusting the Nagios Configuration
- 8.4 Configuring Nagios on HP XC Systems
- 8.5 Using the Nan Notification Aggregator and Delimiter To Control Nagios Messages
- 8.6 Nagios Report Generator Utility
- 8.7 Modifying Nagios To Effect Changes
- 9 Network Administration
- 10 Managing Patches and RPM Updates
- 11 Distributing Software Throughout the System
- 11.1 Overview of the Image Replication and Distribution Environment
- 11.2 Installing and Distributing Software Patches
- 11.3 Adding Software or Modifying Files on the Golden Client
- 11.4 Determining Which Nodes Will Be Imaged
- 11.5 Updating the Golden Image
- 11.6 Propagating the Golden Image to All Nodes
- 11.7 Maintaining a Global Service Configuration
- 12 Opening an IP Port in the Firewall
- 13 Connecting to a Remote Console
- 14 Managing Local User Accounts and Passwords
- 14.1 HP XC User and Group Accounts
- 14.2 General Procedures for Administering Local User Accounts
- 14.3 Adding a Local User Account
- 14.4 Modifying a Local User Account
- 14.5 Deleting a Local User Account
- 14.6 Configuring the ssh Keys for a User
- 14.7 Synchronizing the NIS Database
- 14.8 Changing Administrative Passwords
- 14.8.1 Changing the Superuser Password
- 14.8.2 Changing the CMDB Password
- 14.8.3 Changing the Interconnect Password
- 14.8.4 Changing the Console Port Password
- 14.8.5 Synchronizing the BMC/IPMI Password for CP6000 Systems
- 14.8.6 Changing the Nagios Administrator Password
- 14.8.7 Changing the LSF Administrator Password
- 15 Managing SLURM
- 16 Managing LSF
- 16.1 Standard LSF
- 16.2 LSF with SLURM
- 16.3 Switching the Type of LSF Installed
- 16.4 LSF with SLURM Installation
- 16.5 LSF with SLURM Startup and Shutdown
- 16.6 Controlling the LSF with SLURM Service
- 16.7 Launching Jobs with LSF with SLURM
- 16.8 Monitoring and Controlling LSF with SLURM Jobs
- 16.9 Maintaining Shell Prompts in LSF Interactive Shells
- 16.10 Job Accounting
- 16.11 LSF Daemon Log Maintenance
- 16.12 Load Indexes and Resource Information
- 16.13 LSF with SLURM Monitoring
- 16.14 LSF with SLURM Failover
- 16.15 Moving SLURM and LSF Daemons to Their Backup Nodes
- 16.16 Enhancing LSF with SLURM
- 16.17 Configuring an External Virtual Host Name for LSF with SLURM on HP XC Systems
- 17 Managing Modulefiles
- 18 Mounting File Systems
- 19 Managing Software RAID Arrays
- 20 Using Diagnostic Tools
- 20.1 Using the sys_check Utility
- 20.2 Using the ovp Utility for System Verification
- 20.3 Using the dgemm Utility to Analyze Performance
- 20.4 Using the System Interconnect Diagnostic Tools
- 21 Troubleshooting
- 21.1 General Troubleshooting
- 21.2 Nagios Troubleshooting
- 21.3 Messages Reported by Nagios
- 21.4 System Interconnect Troubleshooting
- 21.5 Improved Availability Issues
- 21.5.1 How To Start HP Serviceguard When Only the Head Node is Running
- 21.5.2 Restart Serviceguard Quorum Server if Quorum Server Node is Re-imaged
- 21.5.3 Known Limitation if Nagios is Configured for Improved Availability
- 21.5.4 Network Restart Command Negatively Affects Serviceguard
- 21.5.5 Problem Failing Over Database Package Under Serviceguard
- 21.6 SLURM Troubleshooting
- 21.7 LSF Troubleshooting
- 22 Servicing the HP XC System
- 22.1 Adding a Node
- 22.2 Replacing a Client Node
- 22.3 Actualizing Planned Nodes
- 22.4 Replacing a Server Blade Enclosure OnBoard Administrator
- 22.5 Replacing a System Interconnect Board in an HP CP6000 System
- 22.6 Software RAID Disk Replacement
- 22.7 Incorporating External Network Interface Cards
- 22.7.1 Gathering Information
- 22.7.2 Editing the platform_vars.ini File
- 22.7.3 Using the device_config Command
- 22.7.4 Updating the Database for the External Network Card
- 22.7.5 Updating the Firewall Custom Configuration
- 22.7.6 Reconfiguring the Nodes
- 22.7.7 Verifying Success
- 22.7.8 Updating the Golden Image
- A Installing LSF with SLURM into an Existing Standard LSF Cluster
- B Setting Up MPICH
- C HP MCS Monitoring
- D CPU Frequency-Based Power-Saving Feature
- Glossary
- Index
For more information on the resmon utility, see resmon(1).
7.10 The kdump Mechanism and the crash Utility
7.10.1 The kdump Mechanism
This release introduces kdump, a reliable mechanism to save crash dumps. The two major
components to the kdump mechanism are:
• a minimal kernel
• initrd, a RAM disk file system that contains the drivers and the initialization code that
enable the kernel to operate during the crash dump.
These components reside in a reserved area of memory at boot time. If a node crashes, the minimal
kernel initializes the network drivers it needs and begins to dump the crash data. It has no
dependency on the system's state when it is crashing.
A kdump service is part of the node_management and avail_node_management roles. In
the high availability configuration, the file system for the crash dumps resides on the shared
storage.
The kdump facility has a client piece and a server piece: The client makes the minimal kernel and
initrd and reserves the area in the memory space. The server side is an nfs export.
On the server side, you need to set up the file system area beforehand to receive the crash dumps.
HP recommends that you use a dedicated file system with adequate disk space to store a specified
number of dump files plus some additional extra space.
NOTE: In the high availability configuration, the file system for the crashes resides on the
shared storage. Only one server has the file system, the kdump server, locally mounted at a time
and exports it to the clients. There is an IP alias for it and HP ServiceGuard handles the failover.
7.10.2 The crash Utility
The crash utility is a self-contained tool that you can use to investigate live systems or to examine
kernel core dumps created with the kdump package.
7.10.3 Installing kdump and crash
The kdump mechanism and the crash utility are installed during the installation of the HP XC
System Software. The RPMs for these facilities are:
• kexec-tools-rev_number.platform.rpm
• busybox-rev_number.platform.rpm
• crash-rev_number.platform.rpm
• kernel-debuginfo-rev_number.platform.rpm
• kernel-debuginfo-common-rev_number.platform.rpm
• mkinitrd-debuginforev_number.platform.rpm
where:
rev_number
Is the revision number of the software.
platform
Is the platform code.
Use x86_64 for CP4000 systems.
Use ia64 for CP6000 systems.
If you did not install them during HP XC installation, use the rpm command to install that them
on the HP XC system:
1. Log in as superuser (root) on the head node.
2. Use the rpm command with the -ihv options to install the RPMs.
102 Monitoring the System