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https://blog.it-kb.ru/2017/09/15/deploy-and-configure-icinga-2-on-debian-8-part-14-icinga-director-1-3-and-sms-notifications-with-plugin-command-and-custom-shell-script/
Развёртывание и настройка Icinga 2 на Debian 8.6. Часть 14. Настройка SMS оповещений в Icinga Director 1.3