[squid-users] Advise on what to monitor using MRTG

Hi,

I have servers running Squid 2.6 Stable 12 and have managed to install MRTG
2.15.2 on these servers. In view that there are so many graphs seen for
monitoring of squid using MRTG, kindly advise what are the necessary graphs
that I can plot to determine squid performance.

I am also getting SNMP error when cacheClientHttpRequests,
cacheCurrentLRUExpiration, cacheCurrentUnusedFileDescrCount and
cacheCurrentReservedFileDescrCount are being turned on.

SNMP Error:
Received SNMP response with error code
  error status: noSuchName
  index 1 (OID: 1.3.6.1.4.1.3495.1.5.2.1.2)
SNMPv1_Session (remote host: "Server1" [10.0.0.22].3401)
                  community: "public"
                 request ID: 258813549
                PDU bufsize: 8000 bytes
                    timeout: 2s
                    retries: 5
                    backoff: 1)
at /usr/local/mrtg/bin/../lib/mrtg2/SNMP_util.pm line 490
SNMPGET Problem for cacheClientHttpRequests cacheClientHttpRequests
cacheUptime cacheSoftware cacheVersionId on public@Frost:3401:::::v4only
at ../bin/mrtg line 2150
Use of uninitialized value in concatenation (.) or string at ../bin/mrtg
line 2166.
Use of uninitialized value in concatenation (.) or string at ../bin/mrtg
line 2166.
2007-06-29 13:14:12: WARNING: Expected a number but got '0:00:00'
2007-06-29 13:14:12: WARNING: Expected a number but got '0:00:00'
Unknown SNMP var cacheCurrentUnusedFileDescrCount
at ../bin/mrtg line 2150
Unknown SNMP var cacheCurrentUnusedFileDescrCount
at ../bin/mrtg line 2150
Use of uninitialized value in concatenation (.) or string at ../bin/mrtg
line 2166.
Use of uninitialized value in concatenation (.) or string at ../bin/mrtg
line 2166.
2007-06-29 13:14:12: WARNING: Expected a number but got '13:13:38'
2007-06-29 13:14:12: WARNING: Expected a number but got 'squid'
Unknown SNMP var cacheCurrentReservedFileDescrCount
at ../bin/mrtg line 2150
Unknown SNMP var cacheCurrentReservedFileDescrCount
at ../bin/mrtg line 2150
Use of uninitialized value in concatenation (.) or string at ../bin/mrtg
line 2166.
Use of uninitialized value in concatenation (.) or string at ../bin/mrtg
line 2166.
2007-06-29 13:14:12: WARNING: Expected a number but got '13:13:38'
2007-06-29 13:14:12: WARNING: Expected a number but got 'squid'
2007-06-29 13:14:12: ERROR: Target[cacheclienthttprequests][_IN_] '
$target->[3]{$mode} ' did not eval into defined data
2007-06-29 13:14:12: ERROR: Target[cacheclienthttprequests][_OUT_] '
$target->[3]{$mode} ' did not eval into defined data
2007-06-29 13:14:12: ERROR: Target[cachecurrentlruexpiration][_IN_] '
$target->[19]{$mode} ' did not eval into defined data
2007-06-29 13:14:12: ERROR: Target[cachecurrentlruexpiration][_OUT_] '
$target->[19]{$mode} ' did not eval into defined data
2007-06-29 13:14:12: ERROR: Target[cachecurrentunusedfiledescrcount][_IN_] '
$target->[21]{$mode} ' did not eval into defined data
2007-06-29 13:14:12: ERROR: Target[cachecurrentunusedfiledescrcount][_OUT_]
' $target->[21]{$mode} ' did not eval into defined data
2007-06-29 13:14:12: ERROR: Target[cachecurrentreservedfiledescrcount][_IN_]
' $target->[22]{$mode} ' did not eval into defined data
2007-06-29 13:14:12: ERROR:
Target[cachecurrentreservedfiledescrcount][_OUT_] ' $target->[22]{$mode} '
did not eval into defined data

What do these graphs showed and are they necessary to be activated???

Thank you.

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Received on Thu Jun 28 2007 - 23:21:08 MDT