Events API

NOTE: Requests to the events API require you to authenticate with a Sensu access token or API key. The code examples in this document use the environment variable $SENSU_API_KEY to represent a valid API key in API requests.

Get all events

The /events API endpoint provides HTTP GET access to event data.

Example

The following example demonstrates a request to the /events API endpoint, resulting in a JSON array that contains event definitions.

curl -X GET \
http://127.0.0.1:8080/api/core/v2/namespaces/default/events \
-H "Authorization: Key $SENSU_API_KEY"

HTTP/1.1 200 OK
[
  {
    "timestamp": 1542667666,
    "id": "caaf2c38-2afb-4f96-89b3-8ca5c3e6f449",
    "entity": {
      "entity_class": "agent",
      "system": {
        "hostname": "webserver01",
        "...": "...",
        "arch": "amd64"
      },
      "subscriptions": [
        "testing",
        "entity:webserver01"
      ],
      "metadata": {
        "name": "check-nginx",
        "namespace": "default",
        "created_by": "admin",
        "labels": null,
        "annotations": null
      }
    },
    "check": {
      "check_hooks": null,
      "duration": 2.033888684,
      "command": "http_check.sh http://localhost:80",
      "handlers": [
        "slack"
      ],
      "high_flap_threshold": 0,
      "interval": 20,
      "is_silenced": true,
      "low_flap_threshold": 0,
      "publish": true,
      "runtime_assets": [],
      "subscriptions": [
        "testing"
      ],
      "proxy_entity_name": "",
      "check_hooks": null,
      "stdin": false,
      "ttl": 0,
      "timeout": 0,
      "duration": 0.010849143,
      "output": "",
      "silenced": [
        "entity:gin:check-nginx"
      ],
      "state": "failing",
      "status": 1,
      "total_state_change": 0,
      "last_ok": 0,
      "occurrences": 1,
      "occurrences_watermark": 1,
      "output_metric_format": "",
      "output_metric_handlers": [],
      "env_vars": null,
      "metadata": {
        "name": "check-nginx",
        "namespace": "default",
        "created_by": "admin",
        "labels": null,
        "annotations": null
      }
    }
  }
]

API Specification

/events (GET)
description	Returns the list of events.
example url	http://hostname:8080/api/core/v2/namespaces/default/events
pagination	This endpoint supports pagination using the `limit` and `continue` query parameters.
response filtering	This endpoint supports API response filtering.
response type	Array
response codes	Success: 200 (OK) Error: 500 (Internal Server Error)
output	[ { "timestamp": 1542667666, "id": "caaf2c38-2afb-4f96-89b3-8ca5c3e6f449", "entity": { "entity_class": "agent", "system": { "hostname": "webserver01", "...": "...", "arch": "amd64" }, "subscriptions": [ "testing", "entity:webserver01" ], "metadata": { "name": "check-nginx", "namespace": "default", "created_by": "admin", "labels": null, "annotations": null } }, "check": { "check_hooks": null, "duration": 2.033888684, "command": "http_check.sh http://localhost:80", "handlers": [ "slack" ], "high_flap_threshold": 0, "interval": 20, "is_silenced": true, "low_flap_threshold": 0, "publish": true, "runtime_assets": [], "subscriptions": [ "testing" ], "proxy_entity_name": "", "check_hooks": null, "stdin": false, "ttl": 0, "timeout": 0, "duration": 0.010849143, "output": "", "silenced": [ "entity:gin:check-nginx" ], "state": "failing", "status": 1, "total_state_change": 0, "last_ok": 0, "occurrences": 1, "occurrences_watermark": 1, "output_metric_format": "", "output_metric_handlers": [], "env_vars": null, "metadata": { "name": "check-nginx", "namespace": "default", "created_by": "admin", "labels": null, "annotations": null } } } ]

Create a new event

The /events API endpoint provides HTTP POST access to create an event and send it to the Sensu pipeline.

Example

In the following example, an HTTP POST request is submitted to the /events API endpoint to create an event. The request includes information about the check and entity represented by the event and returns a successful HTTP 201 Created response and the event definition.

curl -X POST \
-H "Authorization: Key $SENSU_API_KEY" \
-H 'Content-Type: application/json' \
-d '{
  "entity": {
    "entity_class": "proxy",
    "metadata": {
      "name": "server1",
      "namespace": "default"
    }
  },
  "check": {
    "output": "Server error",
    "silenced": [
      "entity:gin:server-health"
    ],
    "state": "failing",
    "status": 2,
    "handlers": ["slack"],
    "interval": 60,
    "is_silenced": true,
    "metadata": {
      "name": "server-health"
    }
  }
}' \
http://127.0.0.1:8080/api/core/v2/namespaces/default/events


HTTP/1.1 201 Created

API Specification

/events (POST)
description	Creates a new Sensu event. To update an existing event, use the `/events` PUT endpoint. If you create a new event that references an entity that does not already exist, the sensu-backend will automatically create a proxy entity in the same namespace when the event is published. NOTE: An agent cannot belong to, execute checks in, or create events in more than one namespace.
example URL	http://hostname:8080/api/core/v2/namespaces/default/events
payload	`{ "entity": { "entity_class": "proxy", "metadata": { "name": "server1", "namespace": "default" } }, "check": { "output": "Server error", "silenced": [ "entity:gin:server-health" ], "state": "failing", "status": 2, "handlers": ["slack"], "interval": 60, "is_silenced": true, "metadata": { "name": "server-health" } } }`
response codes	Success: 201 (Created) Malformed: 400 (Bad Request) Error: 500 (Internal Server Error)

Get event data for a specific entity

The /events/:entity API endpoint provides HTTP GET access to event data specific to an :entity, by entity name.

Example

In the following example, querying the /events/:entity API endpoint returns a list of Sensu events for the sensu-go-sandbox entity and a successful HTTP 200 OK response.

curl -X GET \
http://127.0.0.1:8080/api/core/v2/namespaces/default/events/sensu-go-sandbox \
-H "Authorization: Key $SENSU_API_KEY"

HTTP/1.1 200 OK
[
  {
    "timestamp": 1543871497,
    "id": "a68906e0-7c5c-49f0-8424-59a71d3ecfe2",
    "entity": {
      "entity_class": "agent",
      "system": {
        "hostname": "webserver01",
        "...": "...",
        "arch": "amd64"
      },
      "subscriptions": [
        "linux",
        "entity:sensu-go-sandbox"
      ],
      "last_seen": 1543858763,
      "metadata": {
        "name": "sensu-go-sandbox",
        "namespace": "default",
        "created_by": "admin"
      }
    },
    "check": {
      "command": "check-cpu.sh -w 75 -c 90",
      "duration": 1.054253257,
      "executed": 1543871496,
      "history": [
        {
          "status": 0,
          "executed": 1543870296
        }
      ],
      "issued": 1543871496,
      "output": "CPU OK - Usage:.50\n",
      "silenced": [
        "entity:gin:check-cpu"
      ],
      "state": "passing",
      "status": 0,
      "total_state_change": 0,
      "last_ok": 1543871497,
      "occurrences": 1,
      "metadata": {
        "name": "check-cpu",
        "namespace": "default",
        "created_by": "admin"
      }
    },
    "metadata": {
      "namespace": "default"
    }
  },
  {
    "timestamp": 1543871524,
    "id": "095c37e8-1cb4-4d10-91e9-0bdd55a4f35b",
    "entity": {
      "entity_class": "agent",
      "system": {
        "hostname": "webserver01",
        "...": "...",
        "arch": "amd64"
      },
      "subscriptions": [
        "linux",
        "entity:sensu-go-sandbox"
      ],
      "last_seen": 1543871523,
      "metadata": {
        "name": "sensu-go-sandbox",
        "namespace": "default",
        "created_by": "admin"
      }
    },
    "check": {
      "handlers": [
        "keepalive"
      ],
      "executed": 1543871524,
      "history": [
        {
          "status": 0,
          "executed": 1543871124
        }
      ],
      "issued": 1543871524,
      "output": "",
      "silenced": [
        "entity:gin:keepalive"
      ],
      "state": "passing",
      "status": 0,
      "total_state_change": 0,
      "last_ok": 1543871524,
      "occurrences": 1,
      "metadata": {
        "name": "keepalive",
        "namespace": "default",
        "created_by": "admin"
      }
    },
    "metadata": {}
  }
]

API Specification

/events/:entity (GET)
description	Returns a list of events for the specified entity.
example url	http://hostname:8080/api/core/v2/namespaces/default/events/sensu-go-sandbox
pagination	This endpoint supports pagination using the `limit` and `continue` query parameters.
response type	Array
response codes	Success: 200 (OK) Missing: 404 (Not Found) Error: 500 (Internal Server Error)
output	[ { "timestamp": 1543871524, "id": "095c37e8-1cb4-4d10-91e9-0bdd55a4f35b", "entity": { "entity_class": "agent", "system": { "hostname": "webserver01", "...": "...", "arch": "amd64" }, "subscriptions": [ "linux", "entity:sensu-go-sandbox" ], "last_seen": 1543871523, "metadata": { "name": "sensu-go-sandbox", "namespace": "default", "created_by": "admin" } }, "check": { "handlers": [ "keepalive" ], "executed": 1543871524, "history": [ { "status": 0, "executed": 1543871124 } ], "issued": 1543871524, "output": "", "silenced": [ "entity:gin:keepalive" ], "state": "passing", "status": 0, "total_state_change": 0, "last_ok": 1543871524, "occurrences": 1, "metadata": { "name": "keepalive", "namespace": "default", "created_by": "admin" } }, "metadata": {} } ]

Get event data for a specific entity and check

The /events/:entity/:check API endpoint provides HTTP GET access to event data for the specified entity and check.

Example

In the following example, an HTTP GET request is submitted to the /events/:entity/:check API endpoint to retrieve the event for the server1 entity and the server-health check.

curl -X GET \
http://127.0.0.1:8080/api/core/v2/namespaces/default/events/server1/server-health \
-H "Authorization: Key $SENSU_API_KEY"

HTTP/1.1 200 OK

{
    "timestamp": 1577724113,
    "id": "cf3c9fc0-023a-497a-aaf4-880dbd490332",
    "entity": {
        "entity_class": "proxy",
        "system": {
            "network": {
                "interfaces": null
            }
        },
        "subscriptions": null,
        "last_seen": 0,
        "deregister": false,
        "deregistration": {},
        "metadata": {
            "name": "server1",
            "namespace": "default",
            "created_by": "admin"
        },
        "sensu_agent_version": ""
    },
    "check": {
        "handlers": [
            "slack"
        ],
        "high_flap_threshold": 0,
        "interval": 60,
        "is_silenced": true,
        "low_flap_threshold": 0,
        "publish": false,
        "runtime_assets": null,
        "subscriptions": [],
        "proxy_entity_name": "",
        "check_hooks": null,
        "stdin": false,
        "subdue": null,
        "ttl": 0,
        "timeout": 0,
        "round_robin": false,
        "executed": 1543880280,
        "history": [
            {
                "status": 1,
                "executed": 1543880296
            },
            {
                "status": 2,
                "executed": 1543880435
            },
            {
                "status": 1,
                "executed": 1543889363
            }
        ],
        "issued": 0,
        "output": "Server error",
        "silenced": [
          "entity:gin:server-health"
        ],
        "state": "failing",
        "status": 1,
        "total_state_change": 0,
        "last_ok": 0,
        "occurrences": 1,
        "occurrences_watermark": 1,
        "output_metric_format": "",
        "output_metric_handlers": null,
        "env_vars": null,
        "metadata": {
            "name": "server-health",
            "namespace": "default",
            "created_by": "admin"
        }
    },
    "metadata": {}
}

The request returns an HTTP 200 OK response and the resulting event definition.

API Specification

/events/:entity/:check (GET)
description	Returns an event for the specified entity and check.
example url	http://hostname:8080/api/core/v2/namespaces/default/events/server1/server-health
response type	Map
response codes	Success: 200 (OK) Missing: 404 (Not Found) Error: 500 (Internal Server Error)
output	{ "timestamp": 1577724113, "id": "cf3c9fc0-023a-497a-aaf4-880dbd490332", "entity": { "entity_class": "proxy", "system": { "network": { "interfaces": null } }, "subscriptions": null, "last_seen": 0, "deregister": false, "deregistration": {}, "metadata": { "name": "server1", "namespace": "default", "created_by": "admin" }, "sensu_agent_version": "" }, "check": { "handlers": [ "slack" ], "high_flap_threshold": 0, "interval": 60, "is_silenced": true, "low_flap_threshold": 0, "publish": false, "runtime_assets": null, "subscriptions": [], "proxy_entity_name": "", "check_hooks": null, "stdin": false, "subdue": null, "ttl": 0, "timeout": 0, "round_robin": false, "executed": 1543880280, "history": [ { "status": 1, "executed": 1543880296 }, { "status": 2, "executed": 1543880435 }, { "status": 1, "executed": 1543889363 } ], "issued": 0, "output": "Server error", "silenced": [ "entity:gin:server-health" ], "state": "failing", "status": 1, "total_state_change": 0, "last_ok": 0, "occurrences": 1, "occurrences_watermark": 1, "output_metric_format": "", "output_metric_handlers": null, "env_vars": null, "metadata": { "name": "server-health", "namespace": "default", "created_by": "admin" } }, "metadata": {} }

Create a new event for an entity and check

The /events/:entity/:check API endpoint provides HTTP POST access to create an event and send it to the Sensu pipeline.

Example

In the following example, an HTTP POST request is submitted to the /events/:entity/:check API endpoint to create an event for the server1 entity and the server-health check and process it using the slack event handler. The event includes a status code of 1, indicating a warning, and an output message of Server error.

curl -X POST \
-H "Authorization: Key $SENSU_API_KEY" \
-H 'Content-Type: application/json' \
-d '{
  "entity": {
    "entity_class": "proxy",
    "metadata": {
      "name": "server1",
      "namespace": "default"
    }
  },
  "check": {
    "output": "Server error",
    "silenced": [
      "entity:gin:server-health"
    ],
    "status": 1,
    "handlers": ["slack"],
    "interval": 60,
    "is_silenced": true,
    "metadata": {
      "name": "server-health"
    }
  }
}' \
http://127.0.0.1:8080/api/core/v2/namespaces/default/events/server1/server-health


HTTP/1.1 201 Created

NOTE: A namespace is not required to create the event. The event will use the namespace in the URL by default.

You can use sensuctl or the Sensu web UI to see the event:

sensuctl event list

You should see the event with the status and output specified in the request:

    Entity        Check                   Output                 Status   Silenced             Timestamp            
────────────── ───────────── ─────────────────────────────────── ──────── ────────── ─────────────────────────────── 
    server1    server-health   Server error                         1       false      2019-03-14 16:56:09 +0000 UTC

API Specification

/events/:entity/:check (POST)
description	Creates an event for the specified entity and check.
example url	http://hostname:8080/api/core/v2/namespaces/default/events/server1/server-health
payload	`{ "entity": { "entity_class": "proxy", "metadata": { "name": "server1", "namespace": "default" } }, "check": { "output": "Server error", "silenced": [ "entity:gin:server-health" ], "status": 1, "handlers": ["slack"], "interval": 60, "is_silenced": true, "metadata": { "name": "server-health" } } }`
response codes	Success: 201 (Created) Missing: 404 (Not Found) Error: 500 (Internal Server Error)

Create or update an event for an entity and check

The /events/:entity/:check API endpoint provides HTTP PUT access to create or update an event and send it to the Sensu pipeline.

Example

In the following example, an HTTP PUT request is submitted to the /events/:entity/:check API endpoint to create an event for the server1 entity and the server-health check and process it using the slack event handler. The event includes a status code of 1, indicating a warning, and an output message of Server error.

curl -X PUT \
-H "Authorization: Key $SENSU_API_KEY" \
-H 'Content-Type: application/json' \
-d '{
  "entity": {
    "entity_class": "proxy",
    "metadata": {
      "name": "server1",
      "namespace": "default"
    }
  },
  "check": {
    "output": "Server error",
    "silenced": [
      "entity:gin:server-health"
    ],
    "status": 1,
    "handlers": ["slack"],
    "interval": 60,
    "is_silenced": true,
    "metadata": {
      "name": "server-health"
    }
  }
}' \
http://127.0.0.1:8080/api/core/v2/namespaces/default/events/server1/server-health


HTTP/1.1 201 Created

NOTE: A namespace is not required to create the event. The event will use the namespace in the URL by default.

You can use sensuctl or the Sensu web UI to see the event:

sensuctl event list

You should see the event with the status and output specified in the request:

    Entity        Check                   Output                 Status   Silenced             Timestamp            
────────────── ───────────── ─────────────────────────────────── ──────── ────────── ─────────────────────────────── 
    server1    server-health   Server error                         1       false      2019-03-14 16:56:09 +0000 UTC

API Specification

/events/:entity/:check (PUT)
description	Creates an event for the specified entity and check.
example url	http://hostname:8080/api/core/v2/namespaces/default/events/server1/server-health
payload	`{ "entity": { "entity_class": "proxy", "metadata": { "name": "server1", "namespace": "default" } }, "check": { "output": "Server error", "silenced": [ "entity:gin:server-health" ], "status": 1, "handlers": ["slack"], "interval": 60, "is_silenced": true, "metadata": { "name": "server-health" } } }`
payload parameters	See the payload parameters section below.
response codes	Success: 201 (Created) Missing: 404 (Not Found) Error: 500 (Internal Server Error)

Payload parameters

The /events/:entity/:check PUT endpoint requires a request payload that contains an entity scope and a check scope.

The entity scope contains information about the component of your infrastructure represented by the event. At minimum, Sensu requires the entity scope to contain the entity_class (agent or proxy) and the entity name and namespace within a metadata scope. For more information about entity attributes, see the entity specification.
The check scope contains information about the event status and how the event was created. At minimum, Sensu requires the check scope to contain a name within a metadata scope and either an interval or cron attribute. For more information about check attributes, see the check specification.

Example request with minimum required event attributes

curl -X PUT \
-H "Authorization: Key $SENSU_API_KEY" \
-H 'Content-Type: application/json' \
-d '{
  "entity": {
    "entity_class": "proxy",
    "metadata": {
      "name": "server1"
    }
  },
  "check": {
    "interval": 60,
    "metadata": {
      "name": "server-health"
    }
  }
}' \
http://127.0.0.1:8080/api/core/v2/namespaces/default/events/server1/server-health

The minimum required attributes let you create an event using the /events/:entity/:check PUT endpoint, but the request can include any attributes defined in the event specification. To create useful, actionable events, we recommend adding check attributes such as the event status (0 for OK, 1 for warning, 2 for critical), an output message, and one or more event handlers. For more information about these attributes and their available values, see the event specification.

Example request with minimum recommended event attributes

curl -X PUT \
-H "Authorization: Key $SENSU_API_KEY" \
-H 'Content-Type: application/json' \
-d '{
  "entity": {
    "entity_class": "proxy",
    "metadata": {
      "name": "server1",
      "namespace": "default"
    }
  },
  "check": {
    "output": "Server error",
    "silenced": [
      "entity:gin:server-health"
    ],
    "status": 1,
    "handlers": ["slack"],
    "interval": 60,
    "metadata": {
      "name": "server-health"
    }
  }
}' \
http://127.0.0.1:8080/api/core/v2/namespaces/default/events/server1/server-health

Create metrics events

In addition to the entity and check scopes, Sensu events can include a metrics scope that contains metrics in Sensu metric format. See the events reference and for more information about Sensu metric format.

Example request including metrics

curl -X PUT \
-H "Authorization: Key $SENSU_API_KEY" \
-H 'Content-Type: application/json' \
-d '{
  "entity": {
    "entity_class": "proxy",
    "metadata": {
      "name": "server1",
      "namespace": "default"
    }
  },
  "check": {
    "status": 0,
    "output_metric_handlers": ["influxdb"],
    "interval": 60,
    "metadata": {
      "name": "server-metrics"
    }
  },
  "metrics": {
    "handlers": [
      "influxdb"
    ],
    "points": [
      {
        "name": "server1.server-metrics.time_total",
        "tags": [],
        "timestamp": 1552506033,
        "value": 0.005
      },
      {
        "name": "server1.server-metrics.time_namelookup",
        "tags": [],
        "timestamp": 1552506033,
        "value": 0.004
      }
    ]
  }
}' \
http://127.0.0.1:8080/api/core/v2/namespaces/default/events/server1/server-metrics

Delete an event

Example

The following example shows a request to the /events/:entity/:check API endpoint to delete the event produced by the sensu-go-sandbox entity and check-cpu check, resulting in a successful HTTP 204 No Content response.

curl -X DELETE \
http://127.0.0.1:8080/api/core/v2/namespaces/default/events/sensu-go-sandbox/check-cpu \
-H "Authorization: Key $SENSU_API_KEY"

HTTP/1.1 204 No Content

API Specification

/events/:entity/:check (DELETE)
description	Deletes the event created by the specified entity using the specified check.
example url	http://hostname:8080/api/core/v2/namespaces/default/events/sensu-go-sandbox/check-cpu
response codes	Success: 204 (No Content) Missing: 404 (Not Found) Error: 500 (Internal Server Error)

Events API

Get all events

Example

API Specification

Create a new event

Example

API Specification

Get event data for a specific entity

Example

API Specification

Get event data for a specific entity and check

Example

API Specification

Create a new event for an entity and check

Example

API Specification

Create or update an event for an entity and check

Example

API Specification

Payload parameters

Create metrics events

Delete an event

Example

API Specification

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