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Control API

In Apache APISIX, the control API is used to:

  • Expose the internal state of APISIX.
  • Control the behavior of a single, isolated APISIX data plane.

To change the default endpoint (127.0.0.1:9090) of the Control API server, change the ip and port in the control section in your configuration file (conf/config.yaml):

apisix:
  ...
  enable_control: true
  control:
    ip: "127.0.0.1"
    port: 9090

To enable parameter matching in plugin's control API, add router: 'radixtree_uri_with_parameter' to the control section.

Note: Never configure the control API server to listen to public traffic.

Control API Added via Plugins#

Plugins can be enabled to add its control API.

Some Plugins have their own control APIs. See the documentation of the specific Plugin to learn more.

Plugin Independent Control API#

The supported APIs are listed below.

GET /v1/schema#

Introduced in v2.2.

Returns the JSON schema used by the APISIX instance:

{
    "main": {
        "route": {
            "properties": {...}
        },
        "upstream": {
            "properties": {...}
        },
        ...
    },
    "plugins": {
        "example-plugin": {
            "consumer_schema": {...},
            "metadata_schema": {...},
            "schema": {...},
            "type": ...,
            "priority": 0,
            "version": 0.1
        },
        ...
    },
    "stream-plugins": {
        "mqtt-proxy": {
            ...
        },
        ...
    }
}

Note: Only the enabled plugins are returned and they may lack fields like consumer_schema or type depending on how they were defined.

GET /v1/healthcheck#

Introduced in v2.3.

Returns a health check of the APISIX instance.

[
  {
    "nodes": [
      {
        "ip": "52.86.68.46",
        "counter": {
          "http_failure": 0,
          "success": 0,
          "timeout_failure": 0,
          "tcp_failure": 0
        },
        "port": 80,
        "status": "healthy"
      },
      {
        "ip": "100.24.156.8",
        "counter": {
          "http_failure": 5,
          "success": 0,
          "timeout_failure": 0,
          "tcp_failure": 0
        },
        "port": 80,
        "status": "unhealthy"
      }
    ],
    "name": "/apisix/routes/1",
    "type": "http"
  }
]

Each of the returned objects contain the following fields:

  • name: resource id, where the health checker is reporting from.
  • type: health check type: ["http", "https", "tcp"].
  • nodes: target nodes of the health checker.
  • nodes[i].ip: ip address.
  • nodes[i].port: port number.
  • nodes[i].status: health check result: ["healthy", "unhealthy", "mostly_healthy", "mostly_unhealthy"].
  • nodes[i].counter.success: success health check count.
  • nodes[i].counter.http_failure: http failures count.
  • nodes[i].counter.tcp_failure: tcp connect/read/write failures count.
  • nodes[i].counter.timeout_failure: timeout count.

You can also use /v1/healthcheck/$src_type/$src_id to get the health status of specific nodes.

For example, GET /v1/healthcheck/upstreams/1 returns:

{
  "nodes": [
    {
      "ip": "52.86.68.46",
      "counter": {
        "http_failure": 0,
        "success": 2,
        "timeout_failure": 0,
        "tcp_failure": 0
      },
      "port": 80,
      "status": "healthy"
    },
    {
      "ip": "100.24.156.8",
      "counter": {
        "http_failure": 5,
        "success": 0,
        "timeout_failure": 0,
        "tcp_failure": 0
      },
      "port": 80,
      "status": "unhealthy"
    }
  ],
  "type": "http"
  "name": "/apisix/routes/1"
}

note

Only when one upstream is satisfied by the conditions below, its status is shown in the result list:

  • The upstream is configured with a health checker
  • The upstream has served requests in any worker process

If you use browser to access the control API URL, then you will get the HTML output:

POST /v1/gc#

Introduced in v2.8.

Triggers a full garbage collection in the HTTP subsystem.

Note: When stream proxy is enabled, APISIX runs another Lua VM for the stream subsystem. Full garbage collection is not triggered in this VM.

GET /v1/routes#

Introduced in v2.10.0.

Returns all configured Routes:

[
  {
    "value": {
      "priority": 0,
      "uris": [
        "/hello"
      ],
      "id": "1",
      "upstream": {
        "scheme": "http",
        "pass_host": "pass",
        "nodes": [
          {
            "port": 1980,
            "host": "127.0.0.1",
            "weight": 1
          }
        ],
        "type": "roundrobin",
        "hash_on": "vars"
      },
      "status": 1
    },
    "clean_handlers": {},
    "has_domain": false,
    "orig_modifiedIndex": 1631193445,
    "modifiedIndex": 1631193445,
    "key": "/routes/1"
  }
]

GET /v1/route/{route_id}#

Introduced in v2.10.0.

Returns the Route with the specified route_id:

{
  "value": {
    "priority": 0,
    "uris": [
      "/hello"
    ],
    "id": "1",
    "upstream": {
      "scheme": "http",
      "pass_host": "pass",
      "nodes": [
        {
          "port": 1980,
          "host": "127.0.0.1",
          "weight": 1
        }
      ],
      "type": "roundrobin",
      "hash_on": "vars"
    },
    "status": 1
  },
  "clean_handlers": {},
  "has_domain": false,
  "orig_modifiedIndex": 1631193445,
  "modifiedIndex": 1631193445,
  "key": "/routes/1"
}

GET /v1/services#

Introduced in v2.11.0.

Returns all the Services:

[
  {
    "has_domain": false,
    "clean_handlers": {},
    "modifiedIndex": 671,
    "key": "/apisix/services/200",
    "createdIndex": 671,
    "value": {
      "upstream": {
          "scheme": "http",
          "hash_on": "vars",
          "pass_host": "pass",
          "type": "roundrobin",
          "nodes": [
            {
              "port": 1980,
              "weight": 1,
              "host": "127.0.0.1"
            }
          ]
      },
      "create_time": 1634552648,
      "id": "200",
      "plugins": {
        "limit-count": {
          "key": "remote_addr",
          "time_window": 60,
          "redis_timeout": 1000,
          "allow_degradation": false,
          "show_limit_quota_header": true,
          "policy": "local",
          "count": 2,
          "rejected_code": 503
        }
      },
      "update_time": 1634552648
    }
  }
]

GET /v1/service/{service_id}#

Introduced in v2.11.0.

Returns the Service with the specified service_id:

{
  "has_domain": false,
  "clean_handlers": {},
  "modifiedIndex": 728,
  "key": "/apisix/services/5",
  "createdIndex": 728,
  "value": {
    "create_time": 1634554563,
    "id": "5",
    "upstream": {
      "scheme": "http",
      "hash_on": "vars",
      "pass_host": "pass",
      "type": "roundrobin",
      "nodes": [
        {
          "port": 1980,
          "weight": 1,
          "host": "127.0.0.1"
        }
      ]
    },
    "update_time": 1634554563
  }
}

GET /v1/upstreams#

Introduced in v2.11.0.

Dumps all Upstreams:

[
   {
      "value":{
         "scheme":"http",
         "pass_host":"pass",
         "nodes":[
            {
               "host":"127.0.0.1",
               "port":80,
               "weight":1
            },
            {
               "host":"foo.com",
               "port":80,
               "weight":2
            }
         ],
         "hash_on":"vars",
         "update_time":1634543819,
         "key":"remote_addr",
         "create_time":1634539759,
         "id":"1",
         "type":"chash"
      },
      "has_domain":true,
      "key":"\/apisix\/upstreams\/1",
      "clean_handlers":{
      },
      "createdIndex":938,
      "modifiedIndex":1225
   }
]

GET /v1/upstream/{upstream_id}#

Introduced in v2.11.0.

Dumps the Upstream with the specified upstream_id:

{
   "value":{
      "scheme":"http",
      "pass_host":"pass",
      "nodes":[
         {
            "host":"127.0.0.1",
            "port":80,
            "weight":1
         },
         {
            "host":"foo.com",
            "port":80,
            "weight":2
         }
      ],
      "hash_on":"vars",
      "update_time":1634543819,
      "key":"remote_addr",
      "create_time":1634539759,
      "id":"1",
      "type":"chash"
   },
   "has_domain":true,
   "key":"\/apisix\/upstreams\/1",
   "clean_handlers":{
   },
   "createdIndex":938,
   "modifiedIndex":1225
}

GET /v1/plugin_metadatas#

Introduced in v3.0.0.

Dumps all plugin_metadatas:

[
    {
        "log_format": {
            "upstream_response_time": "$upstream_response_time"
        },
        "id": "file-logger"
    },
    {
        "ikey": 1,
        "skey": "val",
        "id": "example-plugin"
    }
]

GET /v1/plugin_metadata/{plugin_name}#

Introduced in v3.0.0.

Dumps the metadata with the specified plugin_name:

{
    "log_format": {
        "upstream_response_time": "$upstream_response_time"
    },
    "id": "file-logger"
}

PUT /v1/plugins/reload#

Introduced in v3.9.0

Triggers a hot reload of the plugins.

curl "http://127.0.0.1:9090/v1/plugins/reload" -X PUT

GET /v1/discovery/{service}/dump#

Get memory dump of discovered service endpoints and configuration details:

{
  "endpoints": [
    {
      "endpoints": [
        {
          "value": "{\"https\":[{\"host\":\"172.18.164.170\",\"port\":6443,\"weight\":50},{\"host\":\"172.18.164.171\",\"port\":6443,\"weight\":50},{\"host\":\"172.18.164.172\",\"port\":6443,\"weight\":50}]}",
          "name": "default/kubernetes"
        },
        {
          "value": "{\"metrics\":[{\"host\":\"172.18.164.170\",\"port\":2379,\"weight\":50},{\"host\":\"172.18.164.171\",\"port\":2379,\"weight\":50},{\"host\":\"172.18.164.172\",\"port\":2379,\"weight\":50}]}",
          "name": "kube-system/etcd"
        },
        {
          "value": "{\"http-85\":[{\"host\":\"172.64.89.2\",\"port\":85,\"weight\":50}]}",
          "name": "test-ws/testing"
        }
      ],
      "id": "first"
    }
  ],
  "config": [
    {
      "default_weight": 50,
      "id": "first",
      "client": {
        "token": "xxx"
      },
      "service": {
        "host": "172.18.164.170",
        "port": "6443",
        "schema": "https"
      },
      "shared_size": "1m"
    }
  ]
}

GET /v1/discovery/{service}/show_dump_file#

Get configured services details.

{
  "services": {
    "service_a": [
      {
        "host": "172.19.5.12",
        "port": 8000,
        "weight": 120
      },
      {
        "host": "172.19.5.13",
        "port": 8000,
        "weight": 120
      }
    ]
  },
  "expire": 0,
  "last_update": 1615877468
}