Running a script on demand.

[tomekxin1]

I have a script that I want to run on demand on zabbix active clients, I placed the script in the folder "C:\script\test.bat"

I added zabbix_active to the client
AllowKey=system.run[C:\script\test.bat]
UserParameter=sb4.send,C:\script\test.bat

On the zabbix server in the host in item I added a parameter with a refresh time of 1 hour
The script runs every hour

However, I need to make a change to run this script on zabbix clients from the zabbix server on demand, not every 1 hour.

Finally, I would like to place this script on 7 clients so that it runs when I send an email from my email address to, for example, [email protected] with the message "run script test"

[LenR]

The normal way to defice scripts, for release 7.2 (may be different on your release), is to go to Alerts -> Scripts and create your script something like this example called Etherwake. This script runs on the proxy or server, you would want to choose Zabbix agent instead.


Then on screens where hosts in this group appear, click the host name to get a display like this:


Clicking on Etherwake will run the scrip.

I don't think there is a way in Zabbix to trigger scripts from email, but I think the API can be used to run a script. You would need to get your email to trigger that API call.

[tomekxin1]

Thanks for the advice, but I've already tried this before writing the post,
this method doesn't work in my case for 2 reasons:
- it doesn't work on active agents
- my script runs for more than 30 seconds (this is less important because after updating the script in a month it will need 15-20 seconds to execute)

[tomekxin1]

it seems that in zabbix there is no option to run script on request on zabbix agent active

[cyber]

https://www.zabbix.com/documentation/current/en/manual/config/notifications/action/operation/remote_command#predefined-scripts

Starting with Zabbix agent 7.0, remote commands can also be executed on an agent that is operating in active mode. Zabbix agent - whether active or passive - should run on the remote host, and executes the commands in background.

[tomekxin1]

I don't know how I checked it before, but I must have messed something up then,
as I checked now, manual execution of the script behind the zabbix active client works,

but the problem is that after about 4 seconds the message "timeout while retrieving result for remote command" is displayed,

I set the timeout on the client to 30 seconds and increased the default timeouts on the server for all items except "connection" to 60 seconds, but it didn't help

I tried to run the script with the parameters
C:\script\test.bat]
C:\script\test.bat,wait
C:\script\test.bat,nowait

but in each of these cases I see that the process with the script appears in the Windows task manager and disappears after about 4 seconds, and during this time it will not execute correctly.

[tomekxin1]

I found one thing,
in the zabbix server 'zabbix_server.conf' I had set 'timeout = 4',
I commented out this line and after restarting the server the script stops executing after 3 seconds (default timeout),
I can change 'timeout ' to 30 seconds, but it is not enough for me, because I need about 47 seconds to execute the script

so unfortunately it still doesn't meet my needs because the time is too short, but I'm getting closer to solving this problem

[tomekxin1]

why risky?

If I change the extension on the computer from bat. to .cmd the script will not execute because zabbix will try to run the .bat file which does not exist on the target computer.

I managed to bypass the timeout problem,

I downloaded "Zabbix source", then edited the file
'src/zabbix_server/server.c',
with

{"Timeout",            &zbx_config_timeout,            ZBX_CFG_TYPE_INT,
                ZBX_CONF_PARM_OPT,    1,            30},​

to

{"Timeout",            &zbx_config_timeout,            ZBX_CFG_TYPE_INT,
                ZBX_CONF_PARM_OPT,    1,            300},​

I compiled the server and set it in 'zabbix_server.conf',
"timeout = 300"

[mrnobody]

Wow, change C font, recompile and reconfigure! What a cool bypass. Thanks for sharing!