HP XC System Software Administration Guide Version 3.2.1
8 Monitoring the System with Nagios........................................................................107
8.1 Nagios Overview...........................................................................................................................107
8.1.1 Nagios Components..............................................................................................................108
8.1.2 Nagios Hosts..........................................................................................................................108
8.1.3 Nagios Plug-Ins.....................................................................................................................108
8.1.4 Nagios Web Interface.............................................................................................................109
8.1.5 Nagios Files...........................................................................................................................109
8.2 Using the Nagios Web Interface....................................................................................................109
8.2.1 Accessing the Nagios Web Interface.....................................................................................109
8.2.2 Using the Nagios Tactical Overview.....................................................................................112
8.2.3 Using the Nagios Service Detail View...................................................................................112
8.2.4 Using the Nagios Service Problems View.............................................................................114
8.3 Adjusting the Nagios Configuration.............................................................................................116
8.3.1 Stopping and Restarting Nagios...........................................................................................117
8.3.2 Updating the Nagios Configuration.....................................................................................117
8.3.3 Forwarding Nagios e-mail Alerts..........................................................................................118
8.3.4 Changing Sensor Thresholds.................................................................................................119
8.3.5 Adjusting the Time Allotted for Metrics Collection..............................................................120
8.3.5.1 Global Service Check Timeout Limit............................................................................120
8.3.6 Changing the Default Nagios User Name.............................................................................120
8.3.7 Disabling Individual Nagios Plug-Ins...................................................................................122
8.4 Configuring Nagios on HP XC Systems........................................................................................122
8.4.1 Monitored Nagios Services...................................................................................................122
8.4.2 Nagios Default Settings.........................................................................................................124
8.4.3 Understanding Nagios Alert Messages.................................................................................126
8.4.4 System Event Log Monitoring...............................................................................................127
8.4.4.1 Understanding the System Event Log...........................................................................127
8.4.4.2 System Event Log Configuration..................................................................................127
8.4.4.3 Additional Optional Configuration..............................................................................127
8.5 Nan Notification Aggregator and Delimiter.................................................................................128
8.6 Nagios Report Generator Utility...................................................................................................128
9 Network Administration............................................................................................133
9.1 Network Address Translation Administration.............................................................................133
9.2 Network Time Protocol Service.....................................................................................................134
9.3 Changing the External IP Address of a Head Node.....................................................................135
9.4 Modifying Sendmail......................................................................................................................135
9.5 Bonding Ethernet Network Interface Cards for Failover..............................................................135
10 Managing Patches and RPM Updates..................................................................139
10.1 Sources for Software Packages and Information.........................................................................139
10.2 Downloading and Installing Patches...........................................................................................139
10.3 Rebuild Kernel Dependent Modules...........................................................................................140
10.4 Rebuilding Serviceguard Modules..............................................................................................140
11 Distributing Software Throughout the System........................................................143
11.1 Overview of the Image Replication and Distribution Environment...........................................143
11.2 Installing and Distributing Software Patches..............................................................................144
11.3 Adding Software or Modifying Files on the Golden Client........................................................144
11.3.1 Installing Additional RPMs from the HP XC System Software Installation DVD..............145
11.3.2 Using File Overrides to the Golden Image..........................................................................145
11.3.3 Using Per-Node Service Configuration...............................................................................148
6 Table of Contents