Grant users access to Functionbeat indices

To enable users to access the indices Functionbeat creates, grant them read and view_index_metadata privileges on the Functionbeat indices. If they’re using Kibana, they also need the kibana_user role.

Create a reader role that has the read and view_index_metadata privileges on the Functionbeat indices.

You can create roles from the Management > Roles UI in Kibana or through the role API. For example, the following request creates a role named functionbeat_reader:
```
POST _xpack/security/role/functionbeat_reader
{
  "indices": [
    {
      "names": [ "functionbeat-*" ], 
      "privileges": ["read","view_index_metadata"]
    }
  ]
}
```
If you use a custom Functionbeat index pattern, specify that pattern instead of the default functionbeat-* pattern.
Assign your users the reader role so they can access the Functionbeat indices. For Kibana users who need to visualize the data, also assign the kibana_user role:
1. If you’re using the native realm, you can assign roles with the Management > Users UI in Kibana or through the user API. For example, the following request grants functionbeat_user the functionbeat_reader and kibana_user roles:
```
POST /_xpack/security/user/functionbeat_user
{
  "password" : "YOUR_PASSWORD",
  "roles" : [ "functionbeat_reader","kibana_user"],
  "full_name" : "Functionbeat User"
}
```
2. If you’re using the LDAP, Active Directory, or PKI realms, you assign the roles in the role_mapping.yml configuration file. For example, the following snippet grants Functionbeat User the functionbeat_reader and kibana_user roles:
```
functionbeat_reader:
  - "cn=Functionbeat User,dc=example,dc=com"
kibana_user:
  - "cn=Functionbeat User,dc=example,dc=com"
```
  For more information, see Using Role Mapping Files.

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