DJ Gregor | 1 Feb 01:27 2007

Re: [opennms-discuss] Monitoring NFS

On Jan 31, 2007, at 9:23 AM, Bohm, Louis wrote:
> Has anyone gotten Opennms to monitor a NFS server?  And if yes how  
> do I do it?

Hmm.... interesting one.  Maybe you could use a combination of the  
GpPoller and nfsshell.

NFS is a bit tricky, as multiple protocols are needed to provide the  
NFS "application" to an NFS client.  There's the NFS server, nfsd,  
but you don't talk to it until you get the root filehandle from  
mountd, and you figure out which port mountd is running on by making  
an RPC call.  And that doesn't include any lock handling or actually  
reading/writing a file. :-)

	- djg

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(Continue reading)

John Blake | 1 Feb 03:00 2007

Re: [opennms-discuss] Monitoring NFS


If a syslog message could be generated when it mounts/unmounts, that
could be inserted into ONMS.

-----Original Message-----
From: opennms-discuss-bounces <at> lists.sourceforge.net
[mailto:opennms-discuss-bounces <at> lists.sourceforge.net] On Behalf Of DJ
Gregor
Sent: Wednesday, January 31, 2007 7:28 PM
To: General OpenNMS Discussion
Subject: Re: [opennms-discuss] Monitoring NFS

On Jan 31, 2007, at 9:23 AM, Bohm, Louis wrote:
> Has anyone gotten Opennms to monitor a NFS server?  And if yes how  
> do I do it?

Hmm.... interesting one.  Maybe you could use a combination of the  
GpPoller and nfsshell.

NFS is a bit tricky, as multiple protocols are needed to provide the  
NFS "application" to an NFS client.  There's the NFS server, nfsd,  
but you don't talk to it until you get the root filehandle from  
mountd, and you figure out which port mountd is running on by making  
an RPC call.  And that doesn't include any lock handling or actually  
reading/writing a file. :-)

	- djg

------------------------------------------------------------------------
-
(Continue reading)

Bohm, Louis | 1 Feb 03:33 2007

Re: [opennms-discuss] Monitoring NFS

My netapp is already covered by Opennms default install.  I am looking to monitor a Linux box with nfs
exports.  I want to monitor availability first and foremost.  After that it would be nice to monitor nfs
performance.  The Linux box is running RHEL4.

Louis

~~~~~~~~~~~~~~~~~~~~
Louis Bohm
System Administrator
ChipWrights Inc.
19 Crosby Dr, Suite 300
Bedford, MA 01730
781-271-4128
lbohm <at> chipwrights.com <mailto:lbohm <at> chipwrights.com> 
~~~~~~~~~~~~~~~~~~~~

________________________________

From: opennms-discuss-bounces <at> lists.sourceforge.net on behalf of Jonathan Sartin
Sent: Wed 1/31/2007 16:40
To: General OpenNMS Discussion
Subject: Re: [opennms-discuss] Monitoring NFS

On 31 Jan 2007, at 14:23, Bohm, Louis wrote:

> Has anyone gotten Opennms to monitor a NFS server?  And if yes how 
> do I do it?

Louis,

(Continue reading)

David Hustace | 1 Feb 04:49 2007

Re: [opennms-discuss] Problems with capsd service


On Jan 29, 2007, at 2:27 PM, Alejandro Galue wrote:

>
> Hello,
>
> I have some problems with capsd service.
>
> Is posible to avoid the "service scan" for sub-target ip address ?

If you use the Provisioning Groups UI to configure what you want  
OpenNMS to monitor rather than have it discover, you can control this  
behavior.  Which is what it sounds like you want to do anyway since  
you are using the send-event.pl command to add nodes.  When you use  
this UI you are essentially using the importer service.  The importer  
service only scans 1 interface.  The interface that you provision to  
have the SNMP service and the Snmp Primary attribute is set to 'P'.   
It only scans to get SNMP system and SNMP ifIndex, ifDescr, ifName,  
ifAlias, etc. information.  If you don't specify and interface with  
these 2 conditions, no service scan is completed.

> This because the initial discover can take hours for only two devices.

You can drastically shorten this time by only scanning for the  
services you care to monitor and decreasing the retries to 1 and  
possibly shortening the timeout period.

> The testing machine is a laptop Dell Latitude D800 (Pentium M  
> 1.8Ghz, 1Gb RAM,
> 5200RPM HD with Fedora Core 6 and ONMS 1.3.3 from trunk)
(Continue reading)

David Hustace | 1 Feb 04:55 2007

Re: [opennms-discuss] blog: monitoring the jvm with snmp


On Jan 30, 2007, at 4:50 AM, Stuart Fox wrote:

> Now a related question, where do I actually view the graphs? The  
> "Resource Graphs" link for the node only shows "Node level perf  
> data", "Response times" and "Storage"
> I thought that because I'd put jvm.heap, jvm.nonheap and  
> jvm.threads into snmp-graph.properties they would show up in  
> resource graphs.

I would expect those to show up in the node level performance data list.

-David

David Hustace
The OpenNMS Group, Inc.
Main  : +1 919 533 0160   Fax:   +1 503-961-7746
Direct: +1 919 827 1201   Skype: dhustace
Key Fingerprint: 8EC1 F319 2C1D 3197 AAB9  580F FACD 1D19 175E D903

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zheng Liu | 1 Feb 05:04 2007
Picon

Re: [opennms-discuss] blog: monitoring the jvm with snmp

I'd like to have ONMS monitoring itself. Since JVM will run out of CUP/RAM sometimes, we need to know how ONMS is going....
I look forward have this function after I install/start opennms.
 
Thanks,
Liu Zheng 
 
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DJ Gregor | 1 Feb 08:10 2007

Re: [opennms-discuss] Interface Indexing Problem

On Jan 31, 2007, at 12:13 PM, Byron Anderson wrote:
> I recently noticed on that on one of my monitored nodes that the  
> interface specific data-collections started to fail.  When I went  
> to look through the recent events on the box for the cause of this  
> I found the following error…
>
> SNMP Interface Index 2 has changed to -100 on A.B.C.D  (Specific IP  
> removed for security purposes)
>
> In my experience this typically means that it can’t read the SNMP  
> index information from the node.
>
> I performed an snmpwalk on the monitored node and everything looks  
> fine ...

Check capsd.log to see what happens when this node is scanned.   
Without looking at those logs, the best one can do is guess.

> ...
> The monitored node is a Linux box running net-snmp.

Did net-snmp get upgraded recently?  Some versions of net-snmp on 64  
bit boxes generate invalid SNMP PDUs and might cause the problem you  
are seeing.

	- djg

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Frederik Dannemare | 1 Feb 12:16 2007
Picon

Re: [opennms-discuss] Monitoring NFS

On Wednesday 31 January 2007 15:23, Bohm, Louis wrote:
> Has anyone gotten Opennms to monitor a NFS server?  And if yes how do
> I do it?

I'm in the same situation and I was thinking this:

How about letting a simple shell script try to do a lot of writes to the
NFS share from the NFS clients, and if one or more write operations fail, 
report it as the exit value (which could be used for SNMP data collection 
(using 'exec' within snmpd.conf) for graphing and triggers - e.g. 
trigger an event if the exit value is bigger than 0).

Example script:

#!/bin/bash
#
# Generates 100 files of random size (see RANDOM in bash(1)).

NFS_SHARE="/foo/bar"
WRITE_ERRORS=0

for x in $(seq 1 100); do
  dd if=/dev/zero of=/${NFS_SHARE}/${RANDOM} bs=${RANDOM} count=10
  [ $? -gt 0 ] && (( WRITE_ERRORS++ ))
done

[ ${WRITE_ERRORS} -gt 0 ] && { logger -p local3.err "NFS-TEST: ${WRITE_ERRORS} write errors
encountered!"; exit ${WRITE_ERRORS}; }

Anyone care to comment if they think this is a somewhat sufficient test?

Note: I suppose a more correct way of colleting this value would be to 
use 'pass' together with a litte more sophisticated script using getnext
and all that (I have no experience with this, however) - at least if 
anybody wants to do more than 255 writes since the reported exit value 
potentially would be incorrect.

Best regards,
Frederik Dannemare

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Paul Mona | 1 Feb 14:39 2007
Picon

Re: [opennms-discuss] 1.3.2 -- Events stop after 1 hour


I have loaded our production DB on our 1.3.2 box and am again running
out of memory and seeing the threads crash.  How much memory will this
take?  I would think a dual 3G CPU box with 4G of RAM would be plenty
for this app.  Except for Tomcat and postgresql there is nothing else on
this box.

In the output.log there are lots of lines like these:

20333.918: [Full GC [PSYoungGen: 116544K->116544K(233024K)] [PSOldGen:
699072K->699072K(699072K)] 815616K->815616K(932096K) [PSPermGen:
39634K->39634K(39936K)]   GC time is exceeding GCTimeLimit of 98%

And output from start and crash:

------------------------------------------------------------------------
------
Fri Jan 26 09:23:43 PST 2007
begin ulimit settings:
core file size          (blocks, -c) 0
data seg size           (kbytes, -d) unlimited
file size               (blocks, -f) unlimited
pending signals                 (-i) 1024
max locked memory       (kbytes, -l) 32
max memory size         (kbytes, -m) unlimited
open files                      (-n) 10240
pipe size            (512 bytes, -p) 8
POSIX message queues     (bytes, -q) 819200
stack size              (kbytes, -s) 8192
cpu time               (seconds, -t) unlimited
max user processes              (-u) 36864
virtual memory          (kbytes, -v) unlimited
file locks                      (-x) unlimited
end ulimit settings
Executing command: /opt/opennms/bin/runjava -r  --
-Dopennms.home=/opt/opennms -Xmx1024m -XX:+PrintGCTimeStamps
-XX:+PrintGCDetails -jar /opt/opennms/li
b/opennms_bootstrap.jar start

938.225: [GC [PSYoungGen: 110976K->4049K(122496K)]
199261K->92335K(226816K), 0.0218470 secs]
952.125: [GC [PSYoungGen: 115345K->4715K(116032K)]
203631K->93000K(220352K), 0.0239260 secs]
983.120: [GC [PSYoungGen: 87948K->4325K(121408K)]
176234K->92611K(225728K), 0.0265640 secs]
983.147: [Full GC[Unloading class
sun.reflect.GeneratedConstructorAccessor15]
[Unloading class sun.reflect.GeneratedConstructorAccessor26]
[Unloading class sun.reflect.GeneratedConstructorAccessor25]
[Unloading class sun.reflect.GeneratedMethodAccessor2]
[Unloading class sun.reflect.GeneratedConstructorAccessor17]
[Unloading class sun.reflect.GeneratedMethodAccessor4]
[Unloading class sun.reflect.GeneratedMethodAccessor5]
[Unloading class sun.reflect.GeneratedConstructorAccessor14]
[Unloading class sun.reflect.GeneratedConstructorAccessor20]
[Unloading class sun.reflect.GeneratedMethodAccessor9]
[Unloading class sun.reflect.GeneratedConstructorAccessor19]
[Unloading class sun.reflect.GeneratedConstructorAccessor22]
[Unloading class sun.reflect.GeneratedConstructorAccessor23]
[Unloading class sun.reflect.GeneratedConstructorAccessor16]
[Unloading class sun.reflect.GeneratedMethodAccessor6]
[Unloading class sun.reflect.GeneratedConstructorAccessor24]
[Unloading class sun.reflect.GeneratedConstructorAccessor21]
[Unloading class sun.reflect.GeneratedConstructorAccessor18]
[Unloading class sun.reflect.GeneratedMethodAccessor3]
 [PSYoungGen: 4325K->0K(121408K)] [PSOldGen: 88285K->85744K(104320K)]
92611K->85744K(225728K) [PSPermGen: 37294K->37294K(40000K)], 0.4306280
secs]
1019.526: [GC [PSYoungGen: 111680K->5696K(121920K)]
197424K->91440K(226240K), 0.0227150 secs]
1043.588: [GC [PSYoungGen: 33395K->2512K(121792K)]
119140K->88256K(226112K), 0.0123810 secs]
1043.600: [Full GC[Unloading class
sun.reflect.GeneratedConstructorAccessor41]
[Unloading class sun.reflect.GeneratedConstructorAccessor43]
[Unloading class sun.reflect.GeneratedConstructorAccessor40]

12252.082: [Full GC [PSYoungGen: 116543K->116383K(233024K)] [PSOldGen:
699071K->699071K(699072K)] 815615K->815455K(932096K) [PSPermGen:
40050K->40050K(400
64K)]   GC time is exceeding GCTimeLimit of 98%
, 2.3448440 secs]
Exception in thread "default" java.lang.OutOfMemoryError: Java heap
space
12254.433: [Full GC [PSYoungGen: 116544K->116544K(233024K)] [PSOldGen:
699071K->699071K(699072K)] 815615K->815615K(932096K) [PSPermGen:
40051K->40051K(400
64K)]   GC time is exceeding GCTimeLimit of 98%
, 2.1694680 secs]
12256.628: [Full GC [PSYoungGen: 116544K->116544K(233024K)] [PSOldGen:
699071K->699071K(699072K)] 815615K->815615K(932096K) [PSPermGen:
40051K->40051K(400
64K)]   GC time is exceeding GCTimeLimit of 98%
, 2.1674210 secs]
12258.805: [Full GC [PSYoungGen: 116544K->116544K(233024K)] [PSOldGen:
699071K->699071K(699072K)] 815615K->815615K(932096K) [PSPermGen:
40051K->40051K(400
64K)]   GC time is exceeding GCTimeLimit of 98%
, 2.1695010 secs]
12260.979: [Full GC [PSYoungGen: 116544K->116380K(233024K)] [PSOldGen:
699071K->699071K(699072K)] 815615K->815451K(932096K) [PSPermGen:
40051K->40051K(400
64K)]   GC time is exceeding GCTimeLimit of 98%
, 2.9448990 secs]
Exception in thread "Thread-116" java.lang.OutOfMemoryError: Java heap
space
Exception in thread "CollectdScheduler-50 Pool"
java.lang.OutOfMemoryError: Java heap space
Exception in thread "SnmpPortal--1-FastReceiver"
java.lang.OutOfMemoryError: Java heap space
Exception in thread "TrapQueueProcessor" java.lang.OutOfMemoryError:
Java heap space
12263.966: [Full GC [PSYoungGen: 116544K->116544K(233024K)] [PSOldGen:
699071K->699071K(699072K)] 815615K->815615K(932096K) [PSPermGen:
40056K->40056K(400
64K)]   GC time is exceeding GCTimeLimit of 98%
, 2.2081590 secs]
12266.186: [Full GC [PSYoungGen: 116544K->116544K(233024K)] [PSOldGen:
699071K->699071K(699072K)] 815615K->815615K(932096K) [PSPermGen:
40056K->40056K(400
64K)]   GC time is exceeding GCTimeLimit of 98%
, 2.1736410 secs]
12268.369: [Full GC [PSYoungGen: 116544K->116544K(233024K)] [PSOldGen:
699071K->699071K(699072K)] 815615K->815615K(932096K) [PSPermGen:
40056K->40056K(400
64K)]   GC time is exceeding GCTimeLimit of 98%
, 2.1619620 secs]
12270.534: [Full GC [PSYoungGen: 116544K->116398K(233024K)] [PSOldGen:
699071K->699071K(699072K)] 815615K->815469K(932096K) [PSPermGen:
40056K->40056K(400
64K)]   GC time is exceeding GCTimeLimit of 98%
, 2.9710520 secs]
Exception in thread "Event TCP Server[5817]" java.lang.OutOfMemoryError:
Java heap space
12273.531: [Full GC [PSYoungGen: 116544K->116544K(233024K)] [PSOldGen:
699071K->699071K(699072K)] 815615K->815615K(932096K) [PSPermGen:
40056K->40056K(400
64K)]   GC time is exceeding GCTimeLimit of 98%
, 2.1589000 secs]
12275.700: [Full GC [PSYoungGen: 116544K->116544K(233024K)] [PSOldGen:
699071K->699071K(699072K)] 815615K->815615K(932096K) [PSPermGen:
40056K->40056K(400
64K)]   GC time is exceeding GCTimeLimit of 98%
, 2.1691140 secs]
12277.873: [Full GC [PSYoungGen: 116544K->116544K(233024K)] [PSOldGen:
699071K->699071K(699072K)] 815615K->815615K(932096K) [PSPermGen:
40056K->40056K(400
64K)]   GC time is exceeding GCTimeLimit of 98%
, 2.1683000 secs]
12280.055: [Full GC [PSYoungGen: 116544K->115736K(233024K)] [PSOldGen:
699071K->699071K(699072K)] 815615K->814807K(932096K) [PSPermGen:
40056K->40056K(400
64K)]   GC time is exceeding GCTimeLimit of 98%
, 2.9479640 secs]
Exception in thread "UDP Event Receiver[5817]"
java.lang.OutOfMemoryError: Java heap space
12283.022: [Full GC [PSYoungGen: 116544K->0K(233024K)] [PSOldGen:
699071K->177995K(540288K)] 815615K->177995K(773312K) [PSPermGen:
40057K->40057K(40064K)]
, 1.2057900 secs]
Exception in thread "SnmpPortal--1" java.lang.OutOfMemoryError: Java
heap space
12344.228: [GC [PSYoungGen: 68829K->2138K(233024K)]
246824K->180133K(773312K), 0.0178460 secs]
12344.246: [Full GC [PSYoungGen: 2138K->0K(233024K)] [PSOldGen:
177995K->180075K(540288K)] 180133K->180075K(773312K) [PSPermGen:
40101K->40101K(40448K)],
1.1005890 secs]
12357.467: [GC [PSYoungGen: 116544K->103456K(233024K)]
296619K->283531K(773312K), 0.7651500 secs]
12367.744: [GC [PSYoungGen: 220000K->116448K(233024K)]
400075K->393411K(773312K), 1.2769990 secs]
12379.783: [GC [PSYoungGen: 232992K->116448K(233024K)]
509955K->503707K(773312K), 1.2442670 secs]
12391.858: [GC [PSYoungGen: 232992K->116448K(233024K)]
620251K->622211K(773312K), 0.9171710 secs]
12392.775: [Full GC [PSYoungGen: 116448K->80124K(233024K)] [PSOldGen:
505763K->540287K(699072K)] 622211K->620412K(932096K) [PSPermGen:
40108K->40108K(4044
8K)], 2.0850330 secs]
12398.214: [GC [PSYoungGen: 116544K->115776K(233024K)]
656831K->656063K(932096K), 0.5813200 secs]
12409.178: [GC [PSYoungGen: 232320K->116448K(233024K)]
772607K->768287K(932096K), 0.9148160 secs]
12410.093: [Full GC [PSYoungGen: 116448K->57789K(233024K)] [PSOldGen:
651839K->699071K(699072K)] 768287K->756861K(932096K) [PSPermGen:
40110K->40100K(4038
4K)], 2.9382200 secs]

|-----Original Message-----
|From: Paul Mona 
|Sent: Saturday, January 27, 2007 4:35 AM
|To: 'opennms-discuss <at> lists.sourceforge.net'
|Subject: Re: 1.3.2 -- Events stop after 1 hour
|
||On Jan 26, 2007, at 6:48 PM, Paul Mona wrote:
||
||>> How many RRD files do you have?
||>
||> There are 100s of directories both in /response and /snmp
||
||Send us some output from:
||   tail -f uncategorized.log |grep '^QS'
||
|
|[root <at> las-eng-test ~]# tail -f 
|/opt/opennms/logs/uncategorized.log  |grep '^QS'
|QS:     totalOperationsPending=107, significantOpsPending=5, 
|filesWithSignificantWork=5, filesWithInsignificantWork=102
|QS:     , createsCompleted=0, udpatesCompleted=980000, 
|errors=290, promotionRate=0.0, promotionCount=0
|QS:     , currentEnqueueRates=(22/7/30), 
|currentDequeueRate=(22/7/29), currentItemDequeRate=29, 
|currentOpsPerUpdate=1.0, 
|currentPrcntSignificant=73.90659014446864%, elapsedTime=337
|QS:     , overallEnqueueRate=(16/5/22), 
|overallDequeueRate=(16/5/22), overallItemDequeRate=22, 
|overallOpsPerUpdate=1.0001611998163547, 
|overallPrcntSignificant=75.15042099519081%, 
|totalElapsedTime=44362 [127.976 sec]
|QS:     totalOperationsPending=117, significantOpsPending=58, 
|filesWithSignificantWork=58, filesWithInsignificantWork=59
|QS:     , createsCompleted=0, udpatesCompleted=990000, 
|errors=291, promotionRate=0.0, promotionCount=0
|QS:     , currentEnqueueRates=(21/7/29), 
|currentDequeueRate=(21/8/29), currentItemDequeRate=29, 
|currentOpsPerUpdate=1.0002000200020003, 
|currentPrcntSignificant=72.69004095494955%, elapsedTime=343
|QS:     , overallEnqueueRate=(16/5/22), 
|overallDequeueRate=(16/5/22), overallItemDequeRate=22, 
|overallOpsPerUpdate=1.0001615918412279, 
|overallPrcntSignificant=75.1255771500575%, 
|totalElapsedTime=44705 [170.299 sec]
|
|
|
||How may CPUs?
||Are you running in 64-bit Java and are you running OpenNMS in 64-bit 
||mode?
|
|The box has dual 3Gig CPUs.  Yes - 64-bit
|
||
||> (BTW -- The file bin/opennms still has all the paths set to /opt/ 
||> OpenNMS and not /opt/opennms -- My SVN is about 1 week old),
||
||You mentioned 1 week old SVN so, that isn't the 1.3.2 release as the 
||subject would suggest, and you are probably building with the - 
||Dopennms.home=/opt/OpenNMS property.
||
|
|Originally I was running the 64-bit rpm, but built it last 
|week from SVN thinking that something may have been addressed 
|in a later build.
|That said, the problem I have been experiencing happens in both.
|
|
||
||> my system seems to be running well.  After about 6 hours of run  
||> time, this is the last little bit from the output.log   -- I have  
||> no idea what it is telling me though.
||>
||> 22606.489: [GC [PSYoungGen: 342157K->1761K(340672K)] 462910K- 
||> >122514K(581824K), 0.0079570 secs]
||
||Your HEAP size, at this point, is 922,496K.  Your QS stats will be  
||interesting.  Another interesting tool to analyze heap is:
||
||sudo $JAVA_HOME/bin/jmap -heap `cat /opt/opennms/logs/opennms.pid`
||
|
|[root <at> las-eng-test ~]# sudo /usr/java/jdk/bin/jmap -heap `cat 
|/opt/opennms/logs/opennms.pid`
|Attaching to process ID 22913, please wait...
|Debugger attached successfully.
|Server compiler detected.
|JVM version is 1.5.0_10-b03
|
|using thread-local object allocation.
|Parallel GC with 4 thread(s)
|
|Heap Configuration:
|   MinHeapFreeRatio = 40
|   MaxHeapFreeRatio = 70
|   MaxHeapSize      = 1073741824 (1024.0MB)
|   NewSize          = 2686976 (2.5625MB)
|   MaxNewSize       = -65536 (-0.0625MB)
|   OldSize          = 1835008 (1.75MB)
|   NewRatio         = 2
|   SurvivorRatio    = 8
|   PermSize         = 21757952 (20.75MB)
|   MaxPermSize      = 88080384 (84.0MB)
|
|Heap Usage:
|PS Young Generation
|Eden Space:
|   capacity = 342687744 (326.8125MB)
|   used     = 337463664 (321.83042907714844MB)
|   free     = 5224080 (4.9820709228515625MB)
|   98.47555680310528% used
|From Space:
|   capacity = 7340032 (7.0MB)
|   used     = 4008688 (3.8229827880859375MB)
|   free     = 3331344 (3.1770172119140625MB)
|   54.614039829799104% used
|To Space:
|   capacity = 7077888 (6.75MB)
|   used     = 0 (0.0MB)
|   free     = 7077888 (6.75MB)
|   0.0% used
|PS Old Generation
|   capacity = 252313600 (240.625MB)
|   used     = 120093936 (114.53050231933594MB)
|   free     = 132219664 (126.09449768066406MB)
|   47.59709187297078% used
|PS Perm Generation
|   capacity = 41025536 (39.125MB)
|   used     = 40704552 (38.818885803222656MB)
|   free     = 320984 (0.30611419677734375MB)
|   99.2175994970547% used
|
||
||
||So, is your system still running?
||
|
|Yes, still running  :-)
|
||-David
||
||
||David Hustace
||The OpenNMS Group, Inc.
||Main  : +1 919 533 0160   Fax:   +1 503-961-7746
||Direct: +1 919 827 1201   Skype: dhustace
||Key Fingerprint: 8EC1 F319 2C1D 3197 AAB9  580F FACD 1D19 175E D903
||
|

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[opennms-discuss] SNMP Passive Check

Hi!

I'm a new user of OpenNMS and i'm kinda confused with some terms and technology. I googled this particular
doubt, mailing-lists but found nothing. Ah, sorry about my bad English :-)

My situation is:
I have a "server" machine (CentOS4, running OpenNMS 1.3.2) and several "client" machines, running Linux
and "net-snmp 5.4". 

Each "client" is connected to the "server" using ISDN. Since ISDN connections are costly, most of the time
they're down. Only the "server" can initiate the communication.

My objective is:
Having SNMP collected data for each "client" with minimal communication between "server" and "client" (1
connection per day).

First of all, it's possible? :-)
If it's possible, what are the possibilities to do that?

My main idea is:
Follow the methodology of NSCA from Nagios.
* "client"
  * Polling the data and queueing the data until connection is up. The data
    is timestamped.
  * When ISDN was up, the "client" send the info to some daemon on the 
    "server".
* "server"
  * Has a daemon which receives the data sent by the "client" and, somehow,
    updates the RRD files.

Is there any other way (simpler) to do this? How should I do it?

T.I.A.

Vítor Moreira

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Using Tomcat but need to do more? Need to support web services, security?
Get stuff done quickly with pre-integrated technology to make your job easier.
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http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
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Gmane