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- Newsgroups: comp.protocols.snmp
- Path: sparky!uunet!munnari.oz.au!metro!ipso!runxtsa!andrewsc
- From: andrewsc@runx.oz.au (Andrew Schonberger)
- Subject: Re: SNMP UNIX resource management
- Message-ID: <1992Dec15.002721.1169@runx.oz.au>
- Organization: RUNX Un*x Timeshare. Sydney, Australia.
- References: <1992Dec11.232959.18819@kakwa.ucs.ualberta.ca>
- Date: Tue, 15 Dec 92 00:27:21 GMT
- Lines: 58
-
-
- In article <1992Dec11.232959.18819@kakwa.ucs.ualberta.ca>,
- Bob Engley <Bob_Engley@quick.ucs.ualberta.ca> writes:
-
- >We would like to monitor our servers to get an idea
- >of the usage, to answer the inevitable questions:
- >Who is using then? Are they reaching capacity etc?
-
- >Is SNMP the way to do resource monitoring? Just UNIX for now!
- >Has anyone run across an SNMP MIB that defines
- >system resources - things like CPU usage, Disk utilization etc.
- >How about user resource utilization?
- >Of course the next question is: What about an agent that
- >works with the "resource" MIB?
-
- Let's go back to the basics: I recall the first RFCs about SNMP and its
- predecesors. At that time, The Internet, with it's zillions of hosts,
- routes and IP interfaces was becoming unmanageable. The original motivation
- for SNMP was network management, and specifically the management of TCP/IP
- specific resources of a huge network. I'm not suggesting SNMP is forever
- confined to TCP/IP resources. Some manufacturers are defining MIBS for
- things which are already far from the original TCP/IP kind of resources.
-
- The problem comes when an administrator of a medium-sized Unix network
- (20 hosts) is told that "SNMP is the standard for Unix management". Once
- the LAN is installed, hardware malfunctions are not so frequent. Much
- more often, the administrator is being faced with problems which are
- not related to TCP/IP resources:
- - new users have to be added, others have to be removed.
- In a commercial Unix environment, there is typically some data
- base application, which uses its own UserIds.
- - disks or file systems run out of space.
- - some CPUs get overloaded, while others are idle.
-
- Perhaps I shouldn't explain here the problem domain of System Management.
- We know it is more than pure Network Management.
-
- I recall I've seen a product named DDS-Patrol some time ago. It was doing
- resource monitoring in a moderately sized Unix LAN. I think the basic
- concept was to periodically fork off things like 'ps' or 'df', although
- most of the data was obtained straight from /dev/kmem. Somehow, it was
- also polling SNMP resources, and it could be customized to execute any
- other resource-monitoring commands.
-
- On the LAN, there were DDS-Patrol agents on each host to be managed.
- On a central monitor, a Motif window came up, showing disks, CPUs and
- other such 'things'. I remember drilling down to increasingly lower levels
- of granularity, and I could define threshould values for parameters. When a
- disk got full, an icon turned red, and there was even a synthetized
- voice announcement.
-
- The people who showed me this is are at <mpicard@au.oracle.com>. If you are
- interested , I could look up their address or phone in US (it's not
- Oracle Corporation).
-
- Andrew
-
-
-