ACL Policy HTTP API

The /acl/policy endpoints create, read, update, list and delete ACL policies in Consul.

For more information on how to setup ACLs, please check the ACL tutorial.

Create a Policy

This endpoint creates a new ACL policy.

The table below shows this endpoint's support for blocking queries, consistency modes, agent caching, and required ACLs.

The corresponding CLI command is consul acl policy create.

Query Parameters

• ns (string: "") EnterpriseEnterprise - Specifies the namespace of the policy you create. You can also specify the namespace through other methods.

JSON Request Body Schema

• Name (string: <required>) - Specifies a name for the ACL policy. The name can contain alphanumeric characters, dashes -, and underscores _. This name must be unique.

• Description (string: "") - Free form human readable description of the policy.

• Rules (string: "") - Specifies rules for the ACL policy. The format of the Rules property is detailed in the ACL Rules documentation.

• Datacenters (array<string>) - Specifies the datacenters the policy is valid within. When no datacenters are provided the policy is valid in all datacenters including those which do not yet exist but may in the future.

• Namespace (string: "") EnterpriseEnterprise - Specifies the namespace of the policy you create. This field takes precedence over the ns query parameter, one of several other methods to specify the namespace.

Sample Payload

{
  "Name": "node-read",
  "Description": "Grants read access to all node information",
  "Rules": "node_prefix \"\" { policy = \"read\"}",
  "Datacenters": ["dc1"]
}

Sample Request

$ curl --request PUT \
    --data @payload.json \
    http://127.0.0.1:8500/v1/acl/policy

Sample Response

{
  "ID": "e359bd81-baca-903e-7e64-1ccd9fdc78f5",
  "Name": "node-read",
  "Description": "Grants read access to all node information",
  "Rules": "node_prefix \"\" { policy = \"read\"}",
  "Datacenters": ["dc1"],
  "Hash": "OtZUUKhInTLEqTPfNSSOYbRiSBKm3c4vI2p6MxZnGWc=",
  "CreateIndex": 14,
  "ModifyIndex": 14
}

Read a Policy

This endpoint reads an ACL policy with the given ID.

The table below shows this endpoint's support for blocking queries, consistency modes, agent caching, and required ACLs.

The corresponding CLI command is consul acl policy read.

Path Parameters

• id (string: <required>) - Specifies the UUID of the policy you lookup.

Query Parameters

• ns (string: "") EnterpriseEnterprise - Specifies the namespace of the policy you lookup. You can also specify the namespace through other methods.

Sample Request

$ curl --request GET http://127.0.0.1:8500/v1/acl/policy/e359bd81-baca-903e-7e64-1ccd9fdc78f5

Sample Response

{
  "ID": "e359bd81-baca-903e-7e64-1ccd9fdc78f5",
  "Name": "node-read",
  "Description": "Grants read access to all node information",
  "Rules": "node_prefix \"\" { policy = \"read\"}",
  "Datacenters": ["dc1"],
  "Hash": "OtZUUKhInTLEqTPfNSSOYbRiSBKm3c4vI2p6MxZnGWc=",
  "CreateIndex": 14,
  "ModifyIndex": 14
}

Read a Policy by Name

This endpoint reads an ACL policy with the given ID.

The table below shows this endpoint's support for blocking queries, consistency modes, agent caching, and required ACLs.

The corresponding CLI command is consul acl policy read -name=<string>.

Path Parameters

• name (string: <required>) - Specifies the name of the ACL policy to read.

Query Parameters

• ns (string: "") EnterpriseEnterprise - Specifies the namespace of the policy you lookup. You can also specify the namespace through other methods.

Sample Request

$ curl --request GET http://127.0.0.1:8500/v1/acl/policy/name/node-read

Sample Response

{
  "ID": "e359bd81-baca-903e-7e64-1ccd9fdc78f5",
  "Name": "node-read",
  "Description": "Grants read access to all node information",
  "Rules": "node_prefix \"\" { policy = \"read\"}",
  "Datacenters": ["dc1"],
  "Hash": "OtZUUKhInTLEqTPfNSSOYbRiSBKm3c4vI2p6MxZnGWc=",
  "CreateIndex": 14,
  "ModifyIndex": 14
}

Update a Policy

This endpoint updates an existing ACL policy.

The table below shows this endpoint's support for blocking queries, consistency modes, agent caching, and required ACLs.

The corresponding CLI command is consul acl policy update.

Path Parameters

• id (string: <required>) - Specifies the UUID of the policy you update.

Query Parameters

• ns (string: "") EnterpriseEnterprise - Specifies the namespace of the policy you update. You can also specify the namespace through other methods.

JSON Request Body Schema

• ID (string: <optional>) - If specified, this field must be an exact match with the id path parameter.

• Name (string: <required>) - Specifies a name for the ACL policy. The name can only contain alphanumeric characters as well as - and _ and must be unique.

• Description (string: "") - Free form human readable description of this policy.

• Rules (string: "") - Specifies rules for this ACL policy. The format of the Rules property is detailed in the ACL Rules documentation.

• Datacenters (array<string>) - Specifies the datacenters this policy is valid within. When no datacenters are provided the policy is valid in all datacenters including those which do not yet exist but may in the future.

• Namespace (string: "") EnterpriseEnterprise - Specifies the namespace of the policy you update. This field takes precedence over the ns query parameter, one of several other methods to specify the namespace.

Sample Payload

{
  "ID": "c01a1f82-44be-41b0-a686-685fb6e0f485",
  "Name": "register-app-service",
  "Description": "Grants write permissions necessary to register the 'app' service",
  "Rules": "service \"app\" { policy = \"write\"}"
}

Sample Request

$ curl --request PUT \
    --data @payload.json \
    http://127.0.0.1:8500/v1/acl/policy/c01a1f82-44be-41b0-a686-685fb6e0f485

Sample Response

{
  "ID": "c01a1f82-44be-41b0-a686-685fb6e0f485",
  "Name": "register-app-service",
  "Description": "Grants write permissions necessary to register the 'app' service",
  "Rules": "service \"app\" { policy = \"write\"}",
  "Hash": "OtZUUKhInTLEqTPfNSSOYbRiSBKm3c4vI2p6MxZnGWc=",
  "CreateIndex": 14,
  "ModifyIndex": 28
}

Delete a Policy

This endpoint deletes an ACL policy.

Even though the return type is application/json, the value is either true or false indicating whether the delete succeeded.

The table below shows this endpoint's support for blocking queries, consistency modes, agent caching, and required ACLs.

The corresponding CLI command is consul acl policy delete.

Path Parameters

• id (string: <required>) - Specifies the UUID of the policy you delete.

Query Parameters

• ns (string: "") EnterpriseEnterprise - Specifies the namespace of the policy you delete. You can also specify the namespace through other methods.

Sample Request

$ curl --request DELETE \
    http://127.0.0.1:8500/v1/acl/policy/8f246b77-f3e1-ff88-5b48-8ec93abf3e05

Sample Response

true

List Policies

This endpoint lists all the ACL policies.

The table below shows this endpoint's support for blocking queries, consistency modes, agent caching, and required ACLs.

The corresponding CLI command is consul acl policy list.

Query Parameters

• ns (string: "") EnterpriseEnterprise - Return only the auth methods in the specified namespace. The namespace may be specified as '*' to return results for all namespaces. You can also specify the namespace through other methods.

Sample Request

$ curl --request GET http://127.0.0.1:8500/v1/acl/policies

Sample Response

[
  {
    "CreateIndex": 4,
    "Datacenters": null,
    "Description": "Builtin Policy that grants unlimited access",
    "Hash": "swIQt6up+s0cV4kePfJ2aRdKCLaQyykF4Hl1Nfdeumk=",
    "ID": "00000000-0000-0000-0000-000000000001",
    "ModifyIndex": 4,
    "Name": "global-management"
  },
  {
    "CreateIndex": 14,
    "Datacenters": ["dc1"],
    "Description": "Grants read access to all node information",
    "Hash": "OtZUUKhInTLEqTPfNSSOYbRiSBKm3c4vI2p6MxZnGWc=",
    "ID": "e359bd81-baca-903e-7e64-1ccd9fdc78f5",
    "ModifyIndex": 14,
    "Name": "node-read"
  }
]

Methods to Specify Namespace EnterpriseEnterprise

ACL policy endpoints support several methods for specifying the namespace of the ACL policy resources with the following order of precedence:

1. Namespace field of the JSON request body - only applies to create and update endpoints
2. ns query parameter
3. X-Consul-Namespace request header
4. Namespace is inherited from the namespace of the request's ACL token (if any)
5. The default namespace