To use tools like multipath in zabbix, you have to check the sudo-settings for the zabbixuser. Use visudo to change the permissions for zabbix. Zabbix will not use a Terminal tty, so you should deactivate that in sudo… You can do this by comment the line Defaults requiretty out, or you put that line Defaults:zabbix !requiretty into the visudo-configfile. If you take method one, it is a globalsetting and no connection needs a tty. Method two will only deactivate that for the zabbix user. I recommend method two! Now you can allow the commands you want to use with zabbix. According to the maxim: “as little as possible, as much as necessary” . So you can use a line like that:
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zabbix ALL=NOPASSWD: /sbin/multipathd -k
If you want to use more Tools/Commands or even acces to files, you can put them after the command above, comma seperated.