Steps to monitor service "cron" on Linux OS

[agentguerry]

Hi all,

I have been trying to setup the monitoring for the up/down of CRON.

I am running 1.8.2 Zabbix build.

I have set up an item:

Item 'Template_Linux:CRON Check'
Host - Templet_Linux
Description - CRON check
Type - simple check
Key - proc.num[cron]
Type of information - numeric(unsigned)
Data type - Decimal
Units
Use multiplier - do not use
Update interval (in sec) - 30
Status -active
Store value - as is
Show value throw map - as is
Applications - processes
Group - discovered hosts

I have set up a trigger:

Name - CRON not responding {HOSTNAME}
Experession - {Template_Linuxroc.num[cron].last(0)}<1
Event Generation - Normal
Severity - Disaster

Both of them show in the GUI as active, but when I go to view "monitoring>overview", and view the triggers or data, nothing shows up.

Should I be setting this up a different way?

Thanks

[agentguerry]

I also did shut down cron via /etc/init.d/cron stop, waited about 15 minutes and so no alerting via the GUI or emails.

[walterheck]

It seems like it is not collecting data in the first place, so it not triggering would be fairly normal.
Use the agent log and the server log to find the problem with your item first, then when you can see data you can try triggering.

[agentguerry]

here is the line from my zabbix_server.log

11608:20100824:091551.279 Simple check [net.tcp.service[proc.num[cron],172.30.180.188]] is not supported

So, am i not using the right syntax for monitoring cron?

[badener]

i use proc.num[cron,,,] , probably the net.tcp.service before the proc.num is unnecessary (where does that come from - in the description of your item I don't see it)

[agentguerry]

yeah i'm not sure why that shows up in the server log.

because the item is Key - proc.num[cron]
but the log shows Simple check [net.tcp.service[proc.num[cron]

[badener]

I'd try to check whether the agent works correctly with zabbix_get -s<ip> -kproc.num[cron] - that should give a result
then I'd check the item associated with the host, not the template - maybe you can find something there

[alixen]

Hi,

You have set it up as:

Type - simple check

it should be:

Type - Zabbix agent

Regards,
Alixen

[agentguerry]

Fix

Here is what I did, and now i get a notification and it also will send to my Atlassian Jira reporting.

Item setup:

Description: number of running processes $1
type: zabbix agent
key: proc.num[cron]
type of information: numeric unsigned
data type: decimal
store value: as is
save value: as is

Trigger setup:

name: Cron not running on {HOSTNAME}
Expression: {Template_Linuxroc.num[cron].last(0)}<1 & {Template_Linuxroc.num[cron].prev(0)}<1

those smiley's are "colon" and "lowercase p"....

[prejithprasannan]

Hi, I want to monitor the process of Tomcat different versions. I just want alerts while of one of the tomcat 7 or 8 went down. How to do scripts or triggers for this task

[ggs_admin]

Hi,

I need monitor if cron service is running. I have tried different ways but no luck

Type - simple check
Key - proc.num[cron]

Type - simple check
Key - proc.num[crond]

Type - zabbix agent
Key - proc.num[cron]

Type - zabbix agent
Key - proc.num[crond]

Any of these settings are not working.
It should be checked on the server with the CloudLinux 7.9

[splitek]

For old Zabbix check this: https://share.zabbix.com/operating-s...sing-systemctl
For 5.0/5.4 this: https://www.zabbix.com/integrations/systemd#systemd

Also some info here:

https://www.zabbix.com/documentation/current/manual/discovery/low_level_discovery/examples/systemd

https://www.zabbix.com/documentation/current/manual/config/items/itemtypes/zabbix_agent/zabbix_agent2