Custom UserParameter returns not supported

[itvet]

I am trying to monitor some custom commands in my zabbix server. inside the config file I have the line

UserParameter=asterisk304,asterisk -rx "sip show peer 304" | grep "Status"

however when I add the zabbix agent key "asterisk304" into zabbix, I get a status of not supported, with an error message of "not supported by the zabbix agent".
what am I doing wrong?

[xibbaz]

Probably that your UserParameter command is returning an empty string or maybe your datatype in the item is incompatible. Test it by doing telnet <host> 10050 and just type "asterisk304". Does it return a line contain "Status"? Is your Item of data type Character?

[itvet]

root@zabbix:~# telnet 172.16.4.101 10050
Trying 172.16.4.101...
Connected to 172.16.4.101.
Escape character is '^]'.
asterisk304
ZBXDZBX_NOTSUPPORTEDConnection closed by foreign host.
root@zabbix:~#

[xibbaz]

These things I will usually try to cut and paste the command from the user zabbix itself.

Try as root:
# su - zabbix
# asterisk -rx "sip show peer 304" | grep "Status"

Does it work?

[itvet]

this may be the problem;

Unable to connect to remote asterisk (does /var/run/asterisk/asterisk.ctl exist?)

[xibbaz]

So, there you go. It might be an environment problem (variables not set) or other. At least, I think you have a hint. When you succeed in making the command work as the user zabbix, it should then work when it is run by the agent. Good luck

[David K]

Hello everyone!

I solved this problem by adding a "zabbix" user to a group "asterisk", because without it zabbix user does not have permissions to run asterisk cli...
command to add user zabbix to group asterisk:

usermod -a -G asterisk zabbix

In my case (zabbix-agent version 4.4.x and centos 7) it works fine.
Hope it will help someone oneday.
Thanks!