Raft Operator HTTP API

The /operator/raft endpoints provide tools for management of the Raft subsystem.

Please see the Consensus Protocol Guide for more information about Raft consensus protocol and its use.

Read Raft Configuration

This endpoint queries the status of a client node registered with Nomad.

The table below shows this endpoint's support for blocking queries and required ACLs.

Parameters

• stale - Specifies if the cluster should respond without an active leader. This is specified as a query string parameter.

Sample Request

$ curl \
    https://localhost:4646/v1/operator/raft/configuration

Sample Response

{
  "Index": 1,
  "Servers": [
    {
      "Address": "127.0.0.1:4647",
      "ID": "127.0.0.1:4647",
      "Leader": true,
      "Node": "bacon-mac.global",
      "RaftProtocol": 2,
      "Voter": true
    }
  ]
}

Field Reference

• Index (int) - The Index value is the Raft corresponding to this configuration. The latest configuration may not yet be committed if changes are in flight.

• Servers (array: Server) - The returned Servers array has information about the servers in the Raft peer configuration.

  • ID (string) - The ID of the server. This is the same as the Address but may be upgraded to a GUID in a future version of Nomad.

  • Node (string) - The node name of the server, as known to Nomad, or "(unknown)" if the node is stale and not known.

  • Address (string) - The ip:port for the server.

  • Leader (bool) - is either "true" or "false" depending on the server's role in the Raft configuration.

  • Voter (bool) - is "true" or "false", indicating if the server has a vote in the Raft configuration. Future versions of Nomad may add support for non-voting servers.

Remove Raft Peer

This endpoint removes a Nomad server with given address from the Raft configuration. The return code signifies success or failure.

The table below shows this endpoint's support for blocking queries and required ACLs.

Parameters

• address (string: <optional>) - Specifies the server to remove as ip:port. This cannot be provided along with the id parameter.

• id (string: <optional>) - Specifies the server to remove as id. This cannot be provided along with the address parameter.

Sample Request

$ curl \
    --request DELETE \
    https://localhost:4646/v1/operator/raft/peer?address=1.2.3.4:4646