monitor active proxy last seen

[alescri]

Good morning,
Is possible to monitor the "last seen" value of an active proxy with a trigger?
I ask because today I realized that I didn't get an alert because the proxy was offline.
thanks for your reply

[rwalter]

I would like to know this as well. same type of issue.

[ingus.vilnis]

Hi,

Checklist
In Administration -> Proxies you have your proxy and it successfully exchanges the data with server.
In Configuration -> Hosts you have the proxy added as a host. Desirably with the same name as in Administration -> Proxies and matches actual host name but that depends on ones taste. Thus you can use it in a nice template for all proxies.
The proxy has Linux and Template App Zabbix Proxy linked to it.
The proxy is monitored by itself!!! Never monitor the proxy from server, all graphs for proxy are useless then.

In the Template App Zabbix proxy create the following item. (Naming up to you, item key matters)
Name: Time - Last time data received from proxy
Type: Zabbix internal
Key: zabbix[proxy,{HOST.HOST},lastaccess] (you may replace the {HOST.HOST} macro with other name and achieve other flexibility there, up to you.
Type of info: Numeric (unsigned)
Units: uptime
Update interval: 1m

Check if the item receives data.

Now the Trigger.
Name: Zabbix - Not receiving data for > {$PROXY_LASTACCESS_NODATA_DSTR} from proxy {HOST.HOST} (up to you to create the macro, I use the value 3m there)
Expression: {Template App Zabbix Proxy:zabbix[proxy,{HOST.HOST},lastaccess].fuzzytime({$PROXY_LASTACCESS_NODATA_DSTR})}=0

And that's pretty much it. Test it by blocking the connection from proxy to server or by just stopping the proxy of that's ok.

[Jarbelix]

Thanks for the excellent response. Congratulations on sharing knowledge.

[Roberto Garcia]

My proxy and my host does not have the same name, My Proxie´s name is "MXOFDF" and my Host´s name is "MXOFDFZP001"... when I check in the latest data the following error appears: Proxy "MXOFDFZP001" does not exist. Is mandatory to match the Proxy and host names?

[Himura]

Hello ingus.vilnis and thank you very much for the reply. Could you please assist a bit with my problem as well..
I did what you've wrote above, but for me it does not work well... Since I'm complete newbie in that questions - I would really appreciate your advices.

I've set up a home lab with the following configuration:
zabbix-proxy active


host with the same name as proxy has and template for Zabbix Proxy


host details


I've created the new item in the template Zabbix Proxy


and I new trigger with the names, advices by you


After I turn off the proxy I have no data in the "Monitoring > Problems" area.

Could you please tell me what I did wrong ?

Many thanks in advance.

[alescri]

Hello ingus.vilnis and thank you very much for the reply. Could you please assist a bit with my problem as well..
I did what you've wrote above, but for me it does not work well... Since I'm complete newbie in that questions - I would really appreciate your advices.

I've set up a home lab with the following configuration:
zabbix-proxy active


host with the same name as proxy has and template for Zabbix Proxy


host details


I've created the new item in the template Zabbix Proxy


and I new trigger with the names, advices by you


After I turn off the proxy I have no data in the "Monitoring > Problems" area.

Could you please tell me what I did wrong ?

Many thanks in advance.

hello, i installed the zabbix agent in the proxy .

[Himura]

hello, i installed the zabbix agent in the proxy .

Hello and thanks a lot for the reply! Do you mean that you've just installed the agent (in which mode?) and motinoring proxy just as a normal host?

[alescri]

Hello and thanks a lot for the reply! Do you mean that you've just installed the agent (in which mode?) and motinoring proxy just as a normal host?

i did in that way.
and actually works

[Himura]

i did in that way.
and actually works

Thanks for the reply! I'm very newbie in that area, and it took me a while to reproduce the method, mentioned by ingus.vilnis. From now I've configured 2 triggers for the proxy:
1) agent ping ;
2) last data received;
These triggers are under the different time interval. So if I do not recieve any data from the proxy, but no warning comes from the agent - it means that something is wroing with the proxy itself and I should take care on that.
If agent is not running properly - I receive just 2 warnings, that is quite ok for me.

Dear forum members, thank you very much for your suggests and advices. It helps a lot to the newbies like me.

[RaulChiarella]

Hey...
I think i am kind dull.

I did this but when i went to Latest Data and checked the value generated by that item (zabbix[proxy,{HOST.HOST},lastaccess]) it said 18835 days, 15:39:14
hahahah But that is very weird since Last Seen is just 8 days!!!

Please can someone help me?

[ingus.vilnis]

Hi

Go to the item configuration.

In field Units enter "unixtime"

Update and check the value displayed now.

[RaulChiarella]

Hey...
I think i am kind dull.

I did this but when i went to Latest Data and checked the value generated by that item (zabbix[proxy,{HOST.HOST},lastaccess]) it said 18835 days, 15:39:14
hahahah But that is very weird since Last Seen is just 8 days!!!

Please can someone help me?

Thank you!
Now it displayed 2021-07-27 12:39:14.

[Spectator]

I tried under Zabbix 6 alpha6, but I can't add the trigger (works well under Zabbix 5.4).
In the version 6 the template name was changed by factory from "Template App Zabbix Proxy" to "Zabbix proxy health".

Do you have any ideas?

[cyber]

Wrong syntax for it I think..
The syntax of a simple useful expression is "function(/host/key,parameter)<operator><constant>"

Your expression does not look like this.... And same would not work on 5.4 either.

[Spectator]

Dear Cyber,

Thank you for your response!
I’m pretty beginner in Zabbix, could you possibly help me to articulate the above expression in the correct syntax?

I'm sorry, I remembered badly. It still worked under 5.0 LTS (not 5.4, I don't currently have a 5.4 Zabbix):

[cyber]

I don't have 5.4 either.. I suggest to use that "Add" button there beside "Expression" box. It will open up a wizard and you can choose needed item and needed function and it will format it for you.
For too many times I have seen people struggling with syntax and avoiding that button, like its poisonous..

[Spectator]

Dear Cyber!
Thank you very much, you gave a very good idea! It was solved with the wizard, at least it seems to work.

This is the result:

Expression: fuzzytime(/Zabbix proxy health/zabbix[proxy,{HOST.HOST},lastaccess],{$PROXY_LASTACCESS_NODATA_DSTR})=0