Web monitoring, trigger if a string is found

[sapineceh]

Hi,

I was wondering if there is a way to monitor for a string on a website and have a trigger launch when a specific string is found. In other words I have a query that returns the amount of rows in a database and I would need an alert if the amount of rows returned is zero, so the string that shouldn't be found would be something like "rowsReturned = 0".

[sapineceh]

Any ideas or suggestions?

[Yello]

Hi,
If I am understanding you correctly, that's not really possible using web scenarios given they way they work.

Instead, what I'd do is either:

- Write a script to parse the page output and fire a result to zabbix using zabbix_sender.

or

- Use dbforbix to remotely query the database in question and forward the returned value to zabbix (again, trapper items required).


Regards,
David

[Rawlings]

Hello

You can use nagios plugin Check_Http

It's work good with Zabbix

[mbsit]

Hi,
Come on guys !
It's standard functionality of ZABBIX, you don't need any script or Nagios (tfu) plugin.

Go to: http://www.zabbix.com/documentation/...web_monitoring Read the step 3 in "Real scenario" example (field: Required) and you have what you want.

This is the first answer.

If you want to query the database (not website), you can use STANDARD odbc functionality. Start from there: http://lin4.de/blog/zabbix/zabbix-da...ring-with-odbc

If you want scripting, use UserParameter or SSH command to call 'curl' and parse the result.


Best,
Grzegorz

https://www.mbs-it.pl

[Rawlings]

Hello

@mbsit odbc functionalitydon't work yet

[mbsit]

Rawlings: do not tell nonsense

ODBC is perfect working. I implemented about 2k odbc items during last two month.

Do ./configure Zabbix with (hidden) switch --with-unixodbc and you will see.
Then read http://lab4.org/wiki/Zabbix_Database_Monitor_English

Bests,
Grzegorz

https://www.mbs-it.pl

[Rawlings]

Sorry , i was not update

http://www.zabbix.com/forum/showthread.php?p=39833#post39833

Post 5

[mbsit]

No problem, but it was 4 year ago

Bests,
Grzegorz

--
Wdrożenia Zabbix - Warszawa

https://www.mbs-it.pl

[Yello]

Hi,
Come on guys !
It's standard functionality of ZABBIX, you don't need any script or Nagios (tfu) plugin.

My initial reaction on seeing the OP's question was similar to yours. However, the way I now interpret the question I see it differently. If I recall (I don't have a zabbix instance to work with right now) there is one web item for any scenario failure, return code, validation tsring et.al. Therefore it's not possible to set up a trigger which only fires when a validation string checks fails.

Also, the OP is asking to check that the validation string has a value greater than 0 (fail on 0 value). Web scenarios don't lend themselves to that kind of checking. They check for explicit strings, not patterns.

That's why I suggest pre-processing the page and pushing the result into zabbix for storage/alerting.

Regards,
David

[mbsit]

Hi
Short introduction: My Vision of Zabbix is, this is a tool for Managers and Directors, NOT for Admins. So I will always promote solutions for Managers not for Admins.

I was wondering if there is a way to monitor for a string on a website and have a trigger launch when a specific string is found. In other words I have a query that returns the amount of rows in a database and I would need an alert if the amount of rows returned is zero,

What I understand there is a some website which is owned by the user. This website shows some data (query) from database. if its true, we don't need plugins, we need only one time, user parameter development.

If the website looks like that:

<Some HEADER>
<Table of data>
| column 1 | column 2 | column 3 | .... | column n |

<Some footer>

We can do UserParameter with parameters like:

Userparameter=up.get.website.field[*], curl "$1" | grep $2 | awk $3 '{print $$4}'

We can define Item like this:
Name: Value from website
Type: Zabbix agent
Data type: decimal
Key: up.get.website.field[WEBSITE_ADRRESS,"|","-F'|'",1]

Which get 1-st column value.

Then Managers from frontend (without any scripting) can get any value from that table and trigger it.

Of course, if the website has more complex format, there is a need, more complex - one time userparameter - creating

Bests,
Grzegorz

--
Wdrożenia Zabbix - Warszawa

https://www.mbs-it.pl

[plfiumi]

Hi,
Come on guys !
It's standard functionality of ZABBIX, you don't need any script or Nagios (tfu) plugin.

Go to: http://www.zabbix.com/documentation/...web_monitoring Read the step 3 in "Real scenario" example (field: Required) and you have what you want.

This is the first answer.

If you want to query the database (not website), you can use STANDARD odbc functionality. Start from there: http://lin4.de/blog/zabbix/zabbix-da...ring-with-odbc

If you want scripting, use UserParameter or SSH command to call 'curl' and parse the result.


Best,
Grzegorz
www.mbs-it.pl

Hi, all due respect, this user is talking about the case where the string found is something that you don't expect to happen. So the idea here would be to have an alert IF the string is found.
Actually I'm trying to do the same, I've created a web scenario to find the undesired string. But I don't know what to place in the trigger, because response is still 200 even if the string is not there.
Any help?

Thanks in advance .

[Markku]

I don't know if I'm missing something, but isn't it this simple:
- create a HTTP agent item
- create a trigger with find()

?

Markku

[plfiumi]

I don't know if I'm missing something, but isn't it this simple:
- create a HTTP agent item
- create a trigger with find()

?

Markku

Beautiful Markku, this is the correct answer!

I've created a HTTP Agent to get all the content of the website:

And then a trigger to found a reggex with undesired content in my website:


For future reference, this is a good example: https://blog.zabbix.com/handy-tips-8...unction/17481/

Thanks for your help .

[cyber]

I don't know if I'm missing something, but ...

Yes.. you missed, that someone failed to read docs and revived 10 years old topic..:P