HP XC System Software Administration Guide Version 3.2
8 Monitoring the System with Nagios........................................................................105
8.1 Nagios Overview...........................................................................................................................105
8.1.1 Nagios Components..............................................................................................................106
8.1.2 Nagios Hosts..........................................................................................................................106
8.1.3 Nagios Plug-Ins.....................................................................................................................106
8.1.4 Nagios Web Interface.............................................................................................................107
8.1.5 Nagios Files...........................................................................................................................107
8.2 Using the Nagios Web Interface....................................................................................................107
8.2.1 Accessing the Nagios Web Interface.....................................................................................107
8.2.2 Using the Nagios Tactical Overview.....................................................................................110
8.2.3 Using the Nagios Service Detail View...................................................................................110
8.2.4 Using the Nagios Service Problems View.............................................................................112
8.3 Adjusting the Nagios Configuration.............................................................................................114
8.3.1 Stopping and Restarting Nagios...........................................................................................115
8.3.2 Updating the Nagios Configuration.....................................................................................115
8.3.3 Forwarding Nagios e-mail Alerts..........................................................................................116
8.3.4 Changing Sensor Thresholds.................................................................................................117
8.3.5 Adjusting the Time Allotted for Metrics Collection..............................................................118
8.3.5.1 Global Service Check Timeout Limit............................................................................118
8.3.6 Changing the Default Nagios User Name.............................................................................118
8.3.7 Disabling Individual Nagios Plug-Ins...................................................................................120
8.4 Configuring Nagios on HP XC Systems........................................................................................120
8.4.1 Monitored Nagios Services...................................................................................................120
8.4.2 Nagios Default Settings.........................................................................................................122
8.4.3 Understanding Nagios Alert Messages.................................................................................124
8.4.4 System Event Log Monitoring...............................................................................................125
8.4.4.1 Understanding the System Event Log...........................................................................125
8.4.4.2 System Event Log Configuration..................................................................................125
8.4.4.3 Additional Optional Configuration..............................................................................125
8.5 Nan Notification Aggregator and Delimiter.................................................................................126
8.6 Nagios Report Generator Utility...................................................................................................126
9 Network Administration............................................................................................131
9.1 Network Address Translation Administration.............................................................................131
9.2 Network Time Protocol Service.....................................................................................................132
9.3 Changing the External IP Address of a Head Node.....................................................................133
9.4 Modifying Sendmail......................................................................................................................133
10 Managing Patches and RPM Updates..................................................................135
10.1 Sources for Software Packages and Information.........................................................................135
10.2 Downloading and Installing Patches...........................................................................................135
10.3 Rebuild Kernel Dependent Modules...........................................................................................136
10.4 Rebuilding Serviceguard Modules..............................................................................................136
11 Distributing Software Throughout the System........................................................139
11.1 Overview of the Image Replication and Distribution Environment...........................................139
11.2 Installing and Distributing Software Patches..............................................................................140
11.3 Adding Software or Modifying Files on the Golden Client........................................................140
11.3.1 Installing Additional RPMs from the HP XC System Software Installation DVD..............141
11.3.2 Using File Overrides to the Golden Image..........................................................................141
11.3.3 Using Per-Node Service Configuration...............................................................................144
11.4 Determining Which Nodes Will Be Imaged................................................................................145
6 Table of Contents