Is there a way to monitor agent status in Linux

[agentguerry]

Is there a way to monitor the linux agent, if say for instance if the agent does not start up? I know that through the web managment I can see if I am pinging the server and the rest of the triggers are blank, but I'm looking to see if I can monitor so that I can get an email if the agent is not running.

I'm using an item right now (Simple check, icmpping) to monitor for connectivity.

If the zabbix_agentd is stopped, I cannot telnet to port 10050, and if it IS running, I can telnet to port 10050. What would be the best way to utilize this to see if the agent is up or down?

Still looking around, but figured I would go on and post the question.
If I find the answer, I will finish the post

Thank you

[MrKen]

The zabbix_agent on linux can monitor itself using 'proc.num[zabbix_agentd]'.
This will show you the number of zabbix_agent processes running.

A pretty standard trigger expression to notify you that it's not running could be this: {Host: proc.num[zabbix_agentd].last(0)}<1

Now, I bet you're thinking "But if the agent is down, the data won't update so therefore the trigger will never fire!"
In that case we could probably improve the above trigger by adding a 'nodata' expression.

({Host: proc.num[zabbix_agentd].last(0)}<1)&({Host: proc.num[zabbix_agentd].nodata(120)}=1)

So if the agent can't send data back to the zabbix server (for 120 seconds) the trigger will fire.

I hope that is what you're looking for.

MrKen

[zabbix_zen]

?

Isn't proc.num[] computed by the Agent?
How can the Agent tell the Server its own number of processes is null if it's down?

[agentguerry]

I think you're right on target.
I understand what you're saying and i'm about to try it out!

Thanks! I will report back.

[NOB]

Is there a way to monitor the linux agent, if say for instance if the agent does not start up? I know that through the web managment I can see if I am pinging the server and the rest of the triggers are blank, but I'm looking to see if I can monitor so that I can get an email if the agent is not running.

I'm using an item right now (Simple check, icmpping) to monitor for connectivity.

If the zabbix_agentd is stopped, I cannot telnet to port 10050, and if it IS running, I can telnet to port 10050. What would be the best way to utilize this to see if the agent is up or down?

Still looking around, but figured I would go on and post the question.
If I find the answer, I will finish the post

Thank you

Instead of using an icmpping simplecheck use agent.ping.

item type: "agent"

HTH,

Norbert.

[agentguerry]

Agent.ping does not rely on the agent then, that is coming from the server side?