Host machine monitoring alert rules

prod: "host"
cate: "host"
No need to specify datasource_ids

The Host type is rather special; its queries and triggers structures are completely different from the other types.

rule_config structure

json

{
  "rule_config": {
    "queries": [
      {
        "key": "all_hosts",
        "op": "==",
        "values": []
      }
    ],
    "triggers": [
      {
        "type": "target_miss",
        "severity": 2,
        "duration": 30
      }
    ]
  }
}

queries field reference

key options

key	Description	values example
`all_hosts`	All hosts	`[]`
`group_ids`	Filter by business group	`[1, 2, 3]`
`tags`	Filter by tag	`["env=prod", "region=cn"]`
`hosts`	Filter by hostname	`["web-01", "web-02"]`

op options

op	Description
`==`	Equals
`!=`	Not equals
`=~`	Regex match (only supported for the `hosts` key)
`!~`	Regex non-match (only supported for the `hosts` key)

Multiple queries are in an AND logical relationship.

triggers field reference

type options

type	Description	Extra field
`target_miss`	Machine unreachable	`duration` (seconds)
`pct_target_miss`	Percentage of machines unreachable	`duration` (seconds) + `percent` (percentage)
`offset`	Time offset too large	`duration` (seconds)

Complete example (machine unreachable alert)

json

[{
  "name": "Machine unreachable alert",
  "note": "Machine has not reported data for more than 60 seconds",
  "prod": "host",
  "cate": "host",
  "datasource_ids": [],
  "datasource_queries": [{"match_type": 0, "op": "in", "values": []}],
  "disabled": 0,
  "prom_eval_interval": 30,
  "prom_for_duration": 0,
  "rule_config": {
    "queries": [{"key": "all_hosts", "op": "==", "values": []}],
    "triggers": [{"type": "target_miss", "severity": 1, "duration": 60}]
  },
  "enable_in_bg": 0,
  "enable_days_of_weeks": [["0","1","2","3","4","5","6"]],
  "enable_stimes": ["00:00"],
  "enable_etimes": ["00:00"],
  "notify_recovered": 1,
  "notify_repeat_step": 60,
  "notify_max_number": 0,
  "callbacks": [],
  "append_tags": [],
  "annotations": {},
  "extra_config": {},
  "notify_version": 1,
  "notify_rule_ids": []
}]