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Bdyssh! // Бдыщщь!

Bite my shiny metal ass, %username%.

Zabbix: How to delete hosts which physically non-existent anymore / Как удалить хосты, которые больше не существуют

In Configuration->Hosts, when you delete auto-discovered hosts from list, and delete it physically, they are will reappear due to bugs, when previous discovery rule still running.
To delete these:
Disable discovery rule.
Clone rule to new one with other name but same internals.
Disable the new rule.
Wait a minute or so.
Delete hosts.
Enable new discovery rule.