open-nomad/website/source/api/operator.html.md
2017-07-25 15:55:35 -04:00

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---
layout: api
page_title: Operator - HTTP API
sidebar_current: api-operator
description: |-
The /operator endpoints provides cluster-level tools for Nomad operators, such
as interacting with the Raft subsystem.
---
# /v1/operator
The `/operator` endpoint provides cluster-level tools for Nomad operators, such
as interacting with the Raft subsystem.
~> Use this interface with extreme caution, as improper use could lead to a
Nomad outage and even loss of data.
See the [Outage Recovery](/guides/outage.html) guide for some examples of how
these capabilities are used. For a CLI to perform these operations manually,
please see the documentation for the
[`nomad operator`](/docs/commands/operator.html) command.
## Read Raft Configuration
This endpoint queries the status of a client node registered with Nomad.
| Method | Path | Produces |
| ------ | --------------------------------- | -------------------------- |
| `GET` | `/v1/operator/raft/configuration` | `application/json` |
The table below shows this endpoint's support for
[blocking queries](/api/index.html#blocking-queries) and
[required ACLs](/api/index.html#acls).
| Blocking Queries | ACL Required |
| ---------------- | ------------ |
| `NO` | `none` |
### Parameters
- `stale` - Specifies if the cluster should respond without an active leader.
This is specified as a querystring parameter.
### Sample Request
```text
$ curl \
https://nomad.rocks/v1/operator/raft/configuration
```
### Sample Response
```json
{
"Index": 1,
"Servers": [
{
"Address": "127.0.0.1:4647",
"ID": "127.0.0.1:4647",
"Leader": true,
"Node": "bacon-mac.global",
"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.
| Method | Path | Produces |
| -------- | ---------------------------| -------------------------- |
| `DELETE` | `/v1/operator/raft/peer` | `application/json` |
The table below shows this endpoint's support for
[blocking queries](/api/index.html#blocking-queries) and
[required ACLs](/api/index.html#acls).
| Blocking Queries | ACL Required |
| ---------------- | ------------ |
| `NO` | `none` |
### Parameters
- `address` `(string: <required>)` - Specifies the server to remove as
`ip:port`. This may be provided multiple times and is provided as a
querystring parameter.
- `stale` - Specifies if the cluster should respond without an active leader.
This is specified as a querystring parameter.
### Sample Request
```text
$ curl \
--request DELETE \
https://nomad.rocks/v1/operator/raft/peer?address=1.2.3.4
```