[mrtg] Re: MRTG Losing Data

[Jason Frisvold]

I tried to respond before but apparently something turned my response
into mish mash...  :)

If you have a program that is running cfgmaker on a regular basis to
pick up new interfaces and whatnot, this is most likely the cause.  By
default, I believe cfgmaker uses the ipaddress and the ifIndex to create
the filenames.  If the ifIndex changes, so does the filename.  So, the
data is "lost" ...

---------------------------
Jason H. Frisvold
Senior ATM Engineer
Engineering Dept.
Penteledata
CCNA Certified - CSCO10151622
friz at corp.ptd.net
---------------------------
"Imagination is more important than knowledge. Knowledge is limited.
Imagination encircles the world." -- Albert Einstein [1879-1955]


-----Original Message-----
From: Fauteux, Joe [mailto:Joe.Fauteux at Paymentech.com] 
Sent: Monday, May 20, 2002 10:57 AM
To: 'mrtg at list.ee.ethz.ch'
Subject: [mrtg] Re: MRTG Losing Data


Ed, we had a similar problem once that was caused by permissions on our
UNIX
- whever mrtg ran with these wrong permissions we would lose all our log
data

-----Original Message-----
From: Ed Lafferty [mailto:ed at boltstaff.com]
Sent: Friday, May 17, 2002 4:10 PM
To: 'mrtg at list.ee.ethz.ch'
Subject: [mrtg] MRTG Losing Data



I have been running MRTG 2.9.17 on a Unix system for the past few
months.
Today I saw something very strange. I have lost almost all of my
historic
data for all of my monitored Windows servers and Cisco devices! My
current
graphs are still be being updated, but if I look at any of of the back
data
for weeks, months or year, the data is gone. MRTG has not stopped
running
nor does the monitoring server appear to be having any kind of trouble.

Has anyone else experienced this? Does anyone have any ideas as to what
may
have happened?

In a manner of speaking, I was able to catch the data loss in the act.
I
was monitoring CPU utilization on a server earlier today. The graph was
growing the proper way all day. On one of the page refreshes though, the
graph did not show, only the missing image icon. On the next refresh of
the
page, the graph had lost all of the days information. It was stating 
over from scratch. Ditto when delving into the historic info for that
OID on
that server. It was as if MRTG has just been turned on for the first
time.

Thanks in advance for any help,

Ed Lafferty
Mgr, Network Operations
Bolt Inc.

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