Discovery rule -> external check

[Robot]

I try to add a discovery rule by external check for cisco switch to make dynamicaly creating items.

my script is

#!/bin/bash
. FILIAL_IP_LIST
printf "{\n"
printf '\t"data":['
first=true
cisco_ip=$1
filial_mask=$(echo $cisco_ip | cut -d '.' -f3)

for i in $filial_list
do

if [[ $(echo $i | cut -d '.' -f3) -eq "$filial_mask" || ( $filial_mask -eq "19" && $(echo $i | cut -d '.' -f3) -eq "2" ) ]]; then
filial_name=$(ssh username@$i "cat /etc/hostname")
filial_port=$(echo $(snmpwalk -c snmpmod@2 -v 2c $cisco_ip 1.3.6.1.2.1.17.4.3.1.2.$(printf "%d.%d.%d.%d.%d.%d\n" $(echo $(ssh username@$i "ifconfig | grep -i hw | sed -r 's/[[:space:]]+/\t/g' | cut -f5" ) | sed -e 's/://g' | sed 's/\(..\)/\.0x\1/g' | sed -e  's/^\.//' | sed -e 's/\./ /g'))) | cut -d ":" -f2 | sed -re  's/^[[:space:]]//' )

    if $first ; then
    printf "\n\t{\n"
    first=false
    else
    printf ",\n"
    printf "\t{\n"
    fi

printf "\t\t\"{#FILIALNAME}\":\t\"$filial_name\",\n"
printf "\t\t\"{#FILIALPORT}\":\t\"$filial_port\"\n"
printf "\t}"

fi

done

printf "\n\t]\n"
printf "}\n"

i get output like this

{
    "data":[
    {
        "{#FILIALNAME}":    "vladimir",
        "{#FILIALPORT}":    "25"
    },
    {
        "{#FILIALNAME}":    "izhevsk",
        "{#FILIALPORT}":    "21"
    },
    {
        "{#FILIALNAME}":    "kazan",
        "{#FILIALPORT}":    "24"
    },
    {
        "{#FILIALNAME}":    "Cheboksari",
        "{#FILIALPORT}":    "22"
    },
    {
        "{#FILIALNAME}":    "Kirov",
        "{#FILIALPORT}":    "23"
    }
    ]
}

I allways get error "Value should be a JSON object". But it is valid - checked on https://jsonlint.com/ .

zabbix_server_log in debug mode says
In lld_rows_get()
End of lld_rows_get():FAIL

and nothing else.

Where am i wrong ?
p.s. zabbix server v 2.4.1

[DmitryL]

Try to execute script locally as zabbix user.
By the way, 2.4.1 is quite an old version. I can understand possible trouble to do major upgrade, but at least try to keep with latest minor version

[Robot]

Try to execute script locally as zabbix user.
By the way, 2.4.1 is quite an old version. I can understand possible trouble to do major upgrade, but at least try to keep with latest minor version

thx, problem realy was in zabbix user *facepalm*