⚙️ Configuration

The Sigyn configuration object consists of theses properties: loki, grafana, templates, rules, compositeRules, notifiers and selfMonitoring.

Example configuration

{
  "loki": {
    "apiUrl": "http://localhost:3100"
  },
  "grafana": {
    "apiUrl": "http://localhost:3000"
  },
  "templates": {
    "onlyTitle": {
      "title": "{ruleName} - Triggered {counter} times!"
    }
  },
  "notifiers": {
    "slack": {
      "notifier": "slack",
      "webhookUrl": "https://hooks.slack.com/services/aaa/bbb"
    },
    "discord": {
      "notifier": "discord",
      "webhookUrl": "https://discord.com/api/webhooks/aaa/bbb"
    },
    "teams": {
      "notifier": "teams",
      "webhookUrl": "https://bizoffice9447.webhook.office.com/webhookb2/aaa/bbb"
    }
  },
  "rules": [
    {
      "name": "test1",
      "logql": "{app=\"foo\", env=\"preprod\"} |= `your awesome logql`",
      "polling": [
        "*/10 * 0-15 * * *",
        "*/30 * 16-23 * * *"
      ],
      "alert": {
        "on": {
          "count": "10",
          "interval": "5m"
        },
        "template": {
          "title": "{ruleName} - Triggered {counter} times!",
          "content": [
            "- LogQL: {logql}",
            "- Threshold: {count}",
            "- Interval: {interval}",
            "- [See logs on Grafana]({lokiUrl})"
          ]
        }
      }
    },
    {
      "name": "My rule on env: {label.env}",
      "logql": "{app=\"foo\", env={label.env}} |= `your awesome logql`",
      "polling": "30s",
      "labelFilters": {
        "env": ["prod", "preprod"]
      },
      "alert": {
        "on": {
          "count": "< 10",
          "interval": "5m"
        },
        "template": "onlyTitle"
      }
    },
    {
      "name": "A rule based on label matching",
      "logql": "{app=\"foo\"} |~ `state: (ok|ko)` | regexp `state: (?P<state>ok|ko)`",
      "alert": {
        "on": {
          "label": "state",
          "value": "ko",
          "percentThreshold": 80,
          "interval": "5d"
        },
        "template": {
          "title": "Too much KO"
        }
      }
    }
  ]
}

Required

The loki property defines an object that allows configuring Loki API access.

The grafana property defines an object that allows configuring Grafana API access.

The rules property defines an array of rule objects, each representing a specific monitoring rule.

The notifiers property is an object that allows configuring various notification methods.

Optional

The templates property defines an object that allows to reuse template in any rule.

The extends property defines an array of the configurations paths to extends from. Theses configurations can have only rules and templates properties which works the same way as the main configuration.

The missingLabelStrategy defines the behavior when Sigyn detects an unknown label value.

• ignore Default. Skip the rule creation for the given label.
• error Fails config validation (Sigyn agent will not start).

The defaultSeverity defines the rule alert severities when not specified. Severity 3 (error) by default.
Allowed values:

• critical
• error | major
• warning | minor
• information | info | low

The selfMonitoring property defines how/when Sigyn should emit alert for self problem (i.e when Loki API is down)

Schema Properties

• loki (Object, Required):

  • This object specifies the Loki API configuration.

  Property	Type	Required	Description
  apiUrl	string	✔️	The Loki API url

---

• grafana (Object, Required):

  • This object specifies the Grafana API configuration.

  Property	Type	Required	Description
  apiUrl	string	✔️	The Grafana API url

---

• templates See templates

---

• extends (String[], Optional):
  • This array specifies the configuration paths to extends from.
  • The paths can be either foo or foo.sigyn.config.json where the foo configuration file must be foo.sigyn.config.json.

---

• missingLabelStrategy (String, Optional):

  • This property defines whether Sigyn should throw if a given label value is not found via Loki API.

  Value	Description
  ignore	(Default) Skip the rule creation for each unknown label
  error	Invalidate config and throws when an unknown label is given

---

• rules See Rules

---

• compositeRules See Composite Rules

---

• selfMonitoring See Self Monitoring

---

Notifiers

Sigyn provide its set of notifiers, each one have its own configuration rules.

• @sigyn/discord See docs
• @sigyn/slack See docs
• @sigyn/teams See docs

Theses notifiers can be set without @sigyn/ scope in the config file.

Each notifier is a key-value object where key represents the notifier name to reuse in rules and notifier the only required value property which represents the notifier library.

Example

"notifiers": {
  "my-super-notifier": {
    "notifier": "@sigyn/discord",
    "webhookUrl": "https://discord.com/api/webhooks/aaa/bbb"
  },
  "another-discord-notifier": {
    "notifier": "discord",
    "webhookUrl": "https://discord.com/api/webhooks/ccc/ddd"
  }
},
"rules": [
  {
    ...
    "notifiers": ["my-super-notifier"]
  }
]