Zabbix reporting discovery error

[Jonmccombs]

When using template on Zabbix 3.4 I get the following error under Config - Hosts -Discovery = Value should be a JSON object. It is a little vague why since I did not alter the script for .pl in any way.

[zingreen]

I have the same issue on zabbix 3.2.6

[v-zhuravlev]

please run script by hand from the console and check the output of it. Try to run it under zabbix user.

[zingreen]

my output: [root@xenserver-bhyukrpg zabbix]# sudo -u zabbix sudo /etc/zabbix/scripts/smartctl-disks-discovery.pl perl: warning: Setting locale failed. perl: warning: Please check that your locale settings: LANGUAGE = (unset), LC_ALL = (unset), LC_CTYPE = "UTF-8", LANG = "en_US.UTF-8" are supported and installed on your system. perl: warning: Falling back to the standard locale ("C"). { "data":[

    {
        "{#DISKNAME}":"/dev/sda -d sat",
        "{#SMART_ENABLED}":"1"
    },
    {
        "{#DISKNAME}":"/dev/sdb -d sat",
        "{#SMART_ENABLED}":"1"
    },
    {
        "{#DISKNAME}":"/dev/sdc -d sat",
        "{#SMART_ENABLED}":"1"
    },
    {
        "{#DISKNAME}":"/dev/sdd -d sat",
        "{#SMART_ENABLED}":"1"
    }
]

}

[v-zhuravlev]

Output is not a valid JSON, you need to suppress those warnings. Try to remove ‘use warnings’ pragma from the script

[zingreen]

If I run on local console (not ssh) I have output without warnings: sudo -u zabbix sudo /etc/zabbix/scripts/smartctl-disks-discovery.pl { "data":[

{ "{#DISKNAME}":"/dev/sda -d sat", "{#SMART_ENABLED}":"1" }, { "{#DISKNAME}":"/dev/sdb -d sat", "{#SMART_ENABLED}":"1" }, { "{#DISKNAME}":"/dev/sdc -d sat", "{#SMART_ENABLED}":"1" }, { "{#DISKNAME}":"/dev/sdd -d sat", "{#SMART_ENABLED}":"1" } ] }

[KaMaToZzz]

Output is not a valid JSON, you need to suppress those warnings. Try to remove ‘use warnings’ pragma from the script

Виталий, Убрал ‘use warnings’ , но заббикс все равно ругается на: Value should be a JSON object. В консоли скрипт выполняется корректно. Спасибо.

[v-zhuravlev]

please try then to use zabbix_get like so: zabbix_get -k uHDD.discovery -s <agent_ip> and then check output with https://jsonlint.com/

[KaMaToZzz]

Hmm, its look like sudo need's tty? Need to add sudoers all console commands? Now:

Defaults:zabbix !requiretty
zabbix ALL= (ALL) NOPASSWD: /usr/sbin/smartctl,/etc/zabbix/scripts/smartctl-disks-discovery.pl

sudo: no tty present and no askpass program specified

decision: add in sudores /usr/bin/perl

[proseti]

Hi, I have the same problem. Added in sudoers /usr/bin/perl didn't resolve the issue :/.

UPDATE: I made some test. On server with agent: [root@xenserver-proseti /]# zabbix_agentd -t uHDD.discovery uHDD.discovery [t|{ "data":[

            {
                    "{#DISKNAME}":"/dev/sda -d sat",
                    "{#SMART_ENABLED}":"1"
            }
    ]

}]

[v-zhuravlev]

Check that perl script is executable: chmod +x /etc/zabbix/scripts/smartctl-disks-discovery.pl

[v-zhuravlev]

Most of the time, The problem is with permissions. Please tell me if you have solved the issue and what was it so we can update readme with Troubleshooting section.