ALTER TABLE `servers`
  ADD COLUMN `threshold_cpu_warning`  DECIMAL(5,2) DEFAULT 80.00 AFTER `agent_last_seen_at`,
  ADD COLUMN `threshold_cpu_critical` DECIMAL(5,2) DEFAULT 95.00 AFTER `threshold_cpu_warning`,
  ADD COLUMN `threshold_ram_warning`  DECIMAL(5,2) DEFAULT 80.00 AFTER `threshold_cpu_critical`,
  ADD COLUMN `threshold_ram_critical` DECIMAL(5,2) DEFAULT 95.00 AFTER `threshold_ram_warning`,
  ADD COLUMN `threshold_disk_warning` DECIMAL(5,2) DEFAULT 85.00 AFTER `threshold_ram_critical`,
  ADD COLUMN `threshold_disk_critical` DECIMAL(5,2) DEFAULT 95.00 AFTER `threshold_disk_warning`;