Threshold plugin-Threshold for interfaces rate

[linux83]

Hello,

we setup Threshold plugin and it's working perfectly with system resource (cpu-mem ..etc).

we need to monitor our major interfaces and set rate threshold.

i don't find any scale that fit the interface rating.(High/low)/(Baseline) or (Time Base).

scaling usually 0-100 for system resource, while speed rate are different.
for example how to set threshold trigger if interface reach 200Mbps,

can you help me with any tip to achieve this.

thanks alot.

linux83

[TheWitness]

Use the SVN version (not quite ready to release) and use the RPN Expression. The performance issues were addressed and you can do a percentage Threshold quite easily using either ifSpeed or ifHighSpeed as baselines.

[linux83]

Hello TheWitness,

in this case,should i to re-install the full application using SVN version:
http://svn.cacti.net/viewvc/

i try to follow this post :
http://forums.cacti.net/viewtopic.php?f=17&t=29050

i understand where to configure threshold template as well CDEF functionality, but
i don't know where to modify the scripts:

<ifSpeed>
<name>Interface Speed</name>
<direction>input</direction>
<query_name>ifspeed</query_name>
</ifSpeed>

also i used this formulla as CDEF template and apply it to threshold:
cdef=CURRENT_DATA_SOURCE,8,*,|query_IfSpeed|,/,100,*


there is no graph that show the percentage of the interface calculation but i can see threshold counter
have some counts:


Actions Name ID Type Trigger Duration BL High/Low High Low Current Enabled*
Switch - Traffic - Gi0/2 [traffic_in] 2 High/Low 5 Minutes N/A N/A 2 - 0.0204 Enabled

is this the right way to do it.

thanks for your help.

linux83

[TheWitness]

I would use the RPN Expression:

Code: Select all

|ds:traffic_in|,|query_ifSpeed|,8,/,/,100,*

For percentage and then perform either a Hi/Low or Time Based at some percentage value.

[TheWitness]

You don't need a full re-install unless you are getting errors. Then, you simply need to change the version information in the settings table:

Code: Select all

select * from settings where name='plugin_thold_version';

Update the value to 0.4.4 and then goto the Thold tab again to re-run the upgrade.

[linux83]

Hi,
i use RPN Expression directly under Thresholds configuration with line you provided

it's working fine if i check Thresholds monitor tab, however there is no graph of the percentage showing.

it's ok for me i need the percentage for threshold only but it's normal or i should get the graph.

other thing , it take some time to update the reading status on Threshold tab, how can i reduce
refresh time for this reading?

thanks alot, Perfect application.

linux83

[TheWitness]

You should provide me output of the 'show processlist' command while the thold interface is updating so we can better understand the delay.

[linux83]

Hi TheWitness,

i try this command it's not working (sudo and without) with ubuntu 10.04.
cacti@cacti:~$ sudo show processlist
sudo: show: command not found
it prompt me to install nmh but still this command not executable.

is there any where from cacti i can got the needed log.

i cacluclate it, it take around 5 min's to update the time status.

linux83.

[TheWitness]

Code: Select all

mysql -e "show processlist" | grep -v NULL | grep -v Sleep

[linux83]

update:

1-
i found graph updating every 5 min which is the same time set to trigger the alert to email.
Even if graph not updating on time i received email on correct time if threshold is reach within
set time.

i think it's working perfectly for thershold if interfaces BW is 100/Mbps.

moniting sql is showing nothing:

cacti@cacti:~$ mysql -u root -p password -e "show processlist" | grep -v NULL | grep -v Sleep
Enter password:
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)
cacti@cacti:~$ mysql -u root -p password -e "show processlist" | grep -v NULL | grep -v Sleep
Enter password:
Id User Host db Command Time State Info
cacti@cacti:~$ mysql -u root -p password -e "show processlist" | grep -v NULL | grep -v Sleep
Enter password:
Id User Host db Command Time State Info
cacti@cacti:~$ mysql -u root -p password -e "show processlist" | grep -v NULL | grep -v Sleep
Enter password:
Id User Host db Command Time State Info
cacti@cacti:~$
cacti@cacti:~$ mysql -u root -p password -e "show processlist" | grep -v Sleep
Enter password:
Id User Host db Command Time State Info
2981 root localhost cacti Query 0 NULL show processlist

2- Percentage script is not reporting correct value if interfaces is Gig, it report
value of %97 while intefaces consumed with 140Mbps

could you please help to fix Gig interfaces threshold.


linux83.

[linux83]

sorry for that but All Gig interfaces graphs not reporting correct rate Except for realtime plugin.

i'm i have transfer rate around 400 Mbps and graph report current of 68 and max of 97 Mbps.

could you please help.

linux83

[TheWitness]

You need to make sure your limits are correct on your graphs and that they are properly using 64bit counters.

[linux83]

Hi,
i check the switches configuration to use only snmp version 2, from Cacti-->setting i change defalut snmp to v2.
but how to check /set graph limit on cacti?

if i start "Realtime" plugin i can get the right reading, i debug the switch and found 0 errors snmp.
and still showing wrong reading on main interface graph.

linux83.

[linux83]

Hi,
i also check :
1.interface assign to template the Upper Limit (--upper-limit)=1000.
2.Data Templates ..>[edit: Interface - TrafficMaximum Value ('U' for No Maximum)=1000,000,000.

still the issue.

max inbound in graph showing 40 Mbps while reall traffic = 380Mbps

linux83.

[TheWitness]

Code: Select all

rrdtool info <filename>

Also, view the snmp cache for this Data Source and verify it's using 64bit OID's.