Help - NCV graph issue 🔗 link

I'm having problems getting some particular NCV graphs to display (I get missing graph link) .  I have successfully added other NCV graphs, and I thought I knew what I was doing, but alas I am stuck and cannot figure out what I've done wrong. I'm hoping that Henrik or anyone can see what I'm doing wrong.

What I've checked so far:
* Script is properly sending data message to Hobbit
* Hobbit is receiving the data and creating RRD files
* The RRD files are being updated
* proper? definitions in TEST2RRD
* proper? definition in hobbitgraph.cfg, using correct rrd filename and ds name

I have a server-side script that collects database connection stats for Tomcat processes (5 seperate processes per server). The collector script is working fine, and I verified that rrd files are being created and populated.  The DS is "dbconn":
extt$ ~/local/bin/rrdtool dump ../../data/rrd/host1/tc_1_1-dbconn.rrd  |grep name
                <name> dbconn </name>

data is definitely going into the rrd file(s):
ext$  ~/local/bin/rrdtool dump ../../data/rrd/host/tc_1_1-dbconn.rrd  |grep row |grep -v NaN
                        <!-- 2007-06-29 19:05:00 GMT / 1183143900 --> <row><v> 2.0000000000e+00 </v></row>
                        <!-- 2007-06-29 19:10:00 GMT / 1183144200 --> <row><v> 2.0000000000e+00 </v></row>
                        <!-- 2007-06-29 19:15:00 GMT / 1183144500 --> <row><v> 2.6633333333e+00 </v></row>
                        <!-- 2007-06-29 19:20:00 GMT / 1183144800 --> <row><v> 3.6533333333e+00 </v></row>
                        <!-- 2007-06-29 19:25:00 GMT / 1183145100 --> <row><v> 5.2866666667e+00 </v></row>

Here is the test definition I am using in hobbitgraph.cfg:
[tc_1_1-dbconn]
        TITLE Tomcat Database Connections
        YAXIS #
        DEF:dbconn=tc_1_1-dbconn.rrd:dbconn:AVERAGE
        LINE2:dbconn#00CCCC:database connections
        COMMENT:(5 Minute Combined Avg)\n
        GPRINT:modjk:LAST: \: %5.6lf (cur)
        GPRINT:modjk:MAX: \: %5.6lf (max)

here is the relavant additions I made to the TEST2RRD section of hobbitserver.cfg:
TEST2RRD="<hobbit default settings>,tc_1_1-dbconn=ncv,tc_1_2-dbconn=ncv,tc_1_3-dbconn=ncv,tc_1_4-dbconn=ncv,tc_1_5-dbconn=ncv,tc_2_1-dbconn=ncv,tc_2_2-dbconn=ncv,tc_2_3-dbconn=ncv,tc_2_4-dbconn=ncv,tc_2_5-dbconn=ncv,tc_3_1-dbconn=ncv,tc_3_2-dbconn=ncv,tc_3_3-dbconn=ncv,tc_3_4-dbconn=ncv,tc_3_5-dbconn=ncv"

Once I can get this single graph working, I plan on creating a definition that will display all of the dbconn data in one graph (per host).

-Charles

On 6/29/07, Charles Jones <user-e86b4aeade4e@xymon.invalid> wrote:

        DEF:dbconn=tc_1_1-dbconn.rrd:dbconn:AVERAGE

        GPRINT:modjk:LAST: \: %5.6lf (cur)
        GPRINT:modjk:MAX: \: %5.6lf (max)

Shouldn't that be:

     GPRINT:dbconn:LAST.......
     GPRINT:dbconn:MAX........

Ralph Mitchell

Wow. YET AGAIN I send an email to the list with a problem, and figure it out immediately afterwards. The issue was using the wrong def name in the GPRINT.  I know it looks like I'm a total idiot - I swear I looked at that section of hobbitgraph.cfg at least a dozen times and didn't notice it. Ught. Thank goodness it's Friday.

-Charles

Hi all,

I have yet a different problem with an NCV graph.

I have a script which monitors are UPS.  In the script it captures the
current load. I have set-up the hobbitserver.cfg file and hobbitgraph.cfg
files based on the examples and it is storing the data and producing the
graph, but the numbers don't match.  When I do an rrdtool dump I see the
current data point is ok (like 29% and I see that 29 is the current
datapoint).  When it graphs it, it shows it as 8.   I have tried playing
with the data types and that doesn't help.   

Any ideas?

Thanks ahead of time,
Bruce

 

-----Original Message-----
From: Charles Jones [mailto:user-e86b4aeade4e@xymon.invalid] 
Sent: Friday, June 29, 2007 3:23 PM
To: user-ae9b8668bcde@xymon.invalid
Subject: [hobbit] Re: Help - NCV graph issue

Wow. YET AGAIN I send an email to the list with a problem, and figure it 
out immediately afterwards. The issue was using the wrong def name in 
the GPRINT.  I know it looks like I'm a total idiot - I swear I looked 
at that section of hobbitgraph.cfg at least a dozen times and didn't 
notice it. Ught. Thank goodness it's Friday.

-Charles

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On 6/29/07, White, Bruce <user-58f975e8bf9d@xymon.invalid> wrote:

RRD expects the data at rigidly specified intervals.  Any datum
entered slightly off the expected interval is "extrapolated" to fit
the correct interval.  If you manage to get it *really* close to the
correct time, then it goes in almost untouched.  I'm guessing you
could be hitting somewhere in the middle of the interval, for it to be
so wildly out

Or I'm completely wrong...  :)  It's worth looking into, though,
because the extrapolation does happen.

Ralph Mitchell

Hi I successfully Install Hobbit client for Solaris and HP but I failed
for Linux I am getting following error, could you please help me to come
out this situation.


[root at laboz001 logs]# tail -f hobbitclient.log
shell-init: error retrieving current directory: getcwd: cannot access
parent directories: No such file or directory
shell-init: error retrieving current directory: getcwd: cannot access
parent directories: No such file or directory


Thanks 

Uma Maheswar

On Mon, July 2, 2007 07:51, Bandi, Uma (GE Indust, Plastics, consultant)

wrote:

If you haven't figured it out yet, that's what happens when you do
something that removes the directory you're currently in.

 

-----Original Message-----
From: Bandi, Uma (GE Indust, Plastics, consultant) 
Sent: Monday, July 02, 2007 7:51 AM
To: user-ae9b8668bcde@xymon.invalid
Subject: [hobbit] Linux Client Installation.


Hi I successfully Install Hobbit client for Solaris and HP but I failed
for Linux I am getting following error, could you please help me to come
out this situation.


[root at laboz001 logs]# tail -f hobbitclient.log
shell-init: error retrieving current directory: getcwd: cannot access
parent directories: No such file or directory
shell-init: error retrieving current directory: getcwd: cannot access
parent directories: No such file or directory


Thanks 

Uma Maheswar

I'm in no way an expert on the Hobbit Client, but you seem to want an
answer, so I'll oblige.

It looks like you have a configuration/permissions error on the client
you've installed this on.  This could be for many reasons, but if it
were me I would start looking at file permissions of things you are
looking at on that server.  

You may also have it configured to be looking for a directory or file
that doesn't exist.  Just a guess.

Happy hunting.

Tod Hansmann
Network Engineer
 
 
-----Original Message-----
From: Bandi, Uma (GE Indust, Plastics, consultant)
[mailto:user-55d20652efdc@xymon.invalid] 
Sent: Tuesday, July 03, 2007 9:35 AM
To: user-ae9b8668bcde@xymon.invalid
Subject: [hobbit] getcwd: cannot access parent directories: No such file

or directory

 
-----Original Message-----
From: Bandi, Uma (GE Indust, Plastics, consultant) 
Sent: Monday, July 02, 2007 7:51 AM
To: user-ae9b8668bcde@xymon.invalid
Subject: [hobbit] Linux Client Installation.


Hi I successfully Install Hobbit client for Solaris and HP but I failed
for Linux I am getting following error, could you please help me to come
out this situation.


[root at laboz001 logs]# tail -f hobbitclient.log
shell-init: error retrieving current directory: getcwd: cannot access
parent directories: No such file or directory
shell-init: error retrieving current directory: getcwd: cannot access
parent directories: No such file or directory


Thanks 

Uma Maheswar

It looks like the current working directory for the shell session no
longer exists.

[root at home dir2]#  mkdir /tmp/dir1;mkdir /tmp/dir1/dir2;cd
/tmp/dir1/dir2;rmdir /tmp/dir1/dir2;rmdir /tmp/dir1;man 3 getcwd

shell-init: error retrieving current directory: getcwd: cannot access
parent directories: No such file or directory
shell-init: error retrieving current directory: getcwd: cannot access
parent directories: No such file or directory

There may be other scenarios, but every time I've had a panicky sysadmin
ask me about this, the current working directory has been removed.  Often
happens with a "rpm -e" while you're in one of the directories created by
the rpm.

On Tue, July 3, 2007 11:44, Tod Hansmann wrote: