Use as many Pagerduty service keys as you wish

You need a pair of entries in the config file for each service key:

  - `pagerduty_<name>_id = <id>`
  - `pagerduty_<name>_key = <key>`

Name can be anything and may also include underscores.
Then you can use the id as the priority in the stalker script config to route the alerts to the needed service.