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Operating System KBs

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== OS Knowledge Bases == == OS Knowledge Bases ==
-=== CPU Class ===+==== CPU Class ====
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=== Disk Class === === Disk Class ===

Revision as of 09:30, 11 July 2006

Contents

Overview

The primary aim of the operating system knowledge bases in Sentinel3G is to provide a base level of operations monitoring that is consistent across various UNIX/Linux platforms. Due to differences between the various operating systems we monitor, complete consistency is not always achievable. This document describes the general content of the OS knowledge bases, and the discrepancies between them on different platforms.


Standard Knowledge Base

The standard knowledge base is OS independent, and so is packaged with Sentinel3G on all Operating Systems. It can be upgraded, but not uninstalled.

Sentry AIX HPUX Linux SCO Solaris Tru64 Windows³
Connectivity¹
Event_Manager¹
Host_Monitor
Scheduler²

¹ Connectivity and Event_Manager sentries are only started on the Event Host.
² Scheduler sentry is not started by default. Please read the online documentation for details on how to use the Scheduler sentry.
³ Agent only. Full Event Manager and Host Monitory available May 2003.


OS Knowledge Base Versions

OS Version Availability Date Min Sentinel Version
AIX risc 2.1 17th Mar, 2004 4.4
HPUX parisc 2.1 11th May, 2004 4.4
HPUX intel 2.2 6th Jul, 2006 4.4
Linux intel 2.1 12th Mar, 2004 4.4
SCO Open Server 1.1 25th Oct, 2002 4.2
Solaris intel 2.1 14th Jan, 2003 4.4
Solaris sparc 2.2 14th Feb, 2006 4.4
Tru64 1.2 13th Aug, 2002 4.4
Windows NT/2000/XP 1.0 22nd Jan, 2003 4.4


OS Knowledge Bases

CPU Class

Sentry AIX HPUX Linux SCO Solaris Tru64 Windows
CPU_States¹
Processors
Context_Switches
Interrupts
Run_Queue
System_Calls
NOTE
Certain operating systems do not provide all the CPU statistics by default, and collecting them may require kernel patches or third party collection tools. Solaris requires packages SUNWaccr and SUNWaccu. Tru64 requires …

¹ All operating systems monitor % System, % User and % Idle CPU time, some OSes provide more information:

OS More CPU_States
Information
Description
AIX, Solaris, Tru64 % Wait IO The amount of time spent waiting for blocked I/0 to complete.
Linux % Nice CPU The percentage of time that the system is in the user state running processes at low (nice) scheduling priority.
HPUX


Disk Class

Sentry AIX HPUX Linux SCO Solaris Tru64 Windows
Disk


Error Log Class

Sentry AIX HPUX Linux SCO Solaris Tru64 Windows
Error_Log


Filesystem Class

Sentry AIX HPUX Linux SCO Solaris Tru64 Windows
Free_Space √¹

¹ AIX provides two sentries for free space monitoring, one sentry specifically for /usr (with less sensitive thresholds) and another for the other filesystems.


Memory Class

Sentry AIX HPUX Linux SCO Solaris Tru64 Windows
Paging_Rate
Physical_Memory
Swap_Rate
Swap_Space
NOTE
Certain operating systems do not provide all the memory statistics, as it may not be relevant (eg Swap_Rate on Tru64 and AIX).


Network Class

Sentry AIX HPUX Linux SCO Solaris Tru64 Windows
Collisions
Drops
Errors
Packets_Received √¹ √¹
Packets_Sent √¹ √¹

¹ Packets sent and received are known only as sent and received on Solaris and Linux.


Printers Class

Sentry AIX HPUX Linux SCO Solaris Tru64 Windows
Printers  1 

¹ The Solaris Printer class is "off" by default. This is due to an intermittent issue with the printer agent. The symptoms are excessive cpu usage by the Eventmanager. This only occurs on a very small number of systems.


Processes Class

Sentry AIX HPUX Linux SCO Solaris Tru64 Windows
CPU_Usage        MEM_Usage       Processes;¹      
NOTE
All OS Knowledge Bases support the Process Management Console, provided as an action against Processes sentry class.

¹ On certain OSes the Processes sentry is turned off by default. Certain instances are provided as examples (nmdb, smdb) only, but should be changed to reflect the system on which the KB is installed. Note also that system services (daemons) are normally monitored via the Services sentry, so check in the Services folder before adding processes to be monitored.


===+ Security Class ===+

Sentry AIX HPUX Linux SCO Solaris Tru64 Windows
Bad_SU √¹

¹ On Linux, the Bad_SU sentry is not started by default, as it needs specific configuration to work correctly. Please read the sentry notes for more information on how to configure this sentry.


Services Class

Sentry AIX HPUX Linux SCO Solaris Tru64 Windows Services 1  2    

1 AIX provides a complete service management interface using lssrc, startsrc and stopsrc. This interface has been implemented via actions on the Services sentry on AIX.

2 Linux provides a complete service management interface using chkconfig and the startup/shutdown scripts in /etc/init.d (/etc/rc.d/init.d on older systems). This interface has been implemented via actions on the Services sentry on Linux.


System Class

Sentry AIX HPUX Linux SCO Solaris Tru64 Windows CPU_Information 1        Memory_Information        Operating_System        System_Uptime       

1 The Linux OS on the i386 platform provides additional CPU information including the approximate speed and vendor of the processors.