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Configure authentication credentialsedit

When sending data to a secured cluster through the elasticsearch output, APM Server must either provide basic authentication credentials or present a client certificate.

To configure authentication credentials for APM Server:

  1. Create a writer role that has the following privileges:

    • Cluster: manage_index_templates and monitor
    • Index: write and create_index on the APM Server 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 apm_writer:

    POST _xpack/security/role/apm_writer
{
  "cluster": ["manage_index_templates","monitor"],
  "indices": [
    {
      "names": [ "apm-*" ], 
      "privileges": ["write","create_index"]
    }
  ]
}

    If you use a custom APM Server index pattern, specify that pattern instead of the default apm-* pattern.

  2. Assign the writer role to the user that APM Server will use to connect to Elasticsearch. If you plan to load the pre-built Kibana dashboards, also assign the kibana_user role.

    1. To authenticate as a native user, create a user for APM Server to use internally and assign it the writer role, plus any other roles that are needed.

      You can create users from the Management / Users UI in Kibana or through the user API. For example, following request creates a user named apm_internal that has the apm_writer and kibana_user roles:

      POST /_xpack/security/user/apm_internal
{
  "password" : "YOUR_PASSWORD",
  "roles" : [ "apm_writer","kibana_user"],
  "full_name" : "Internal APM Server User"
}

    2. To use PKI authentication, assign the writer role, plus any other roles that are needed, in the role_mapping.yml configuration file. Specify the user by the distinguished name that appears in its certificate:

      apm_writer:
  - "cn=Internal APM Server User,ou=example,o=com"
kibana_user:
  - "cn=Internal APM Server User,ou=example,o=com"

      For more information, see Using Role Mapping Files.

  3. In the APM Server configuration file, specify authentication credentials for the elasticsearch output:

    1. To use basic authentication, configure the username and password settings. For example, the following APM Server output configuration uses the native apm_internal user to connect to Elasticsearch:

      output.elasticsearch:
  hosts: ["localhost:9200"]
  username: "apm_internal" 
  password: "YOUR_PASSWORD"

      You created this user earlier.

      The example shows a hard-coded password, but you should store sensitive values in the secrets keystore.

    2. To use PKI authentication, configure the certificate and key settings:

      output.elasticsearch:
  hosts: ["localhost:9200"]
  ssl.certificate: "/etc/pki/client/cert.pem" 
  ssl.key: "/etc/pki/client/cert.key"

      The distinguished name (DN) in the certificate must be mapped to the apm_writer and kibana_user roles in the role_mapping.yml configuration file on each node in the Elasticsearch cluster.
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