# Start the watch service

**POST /_watcher/_start**

Start the Watcher service if it is not already running.

## Required authorization

* Cluster privileges: `manage_watcher`



## Servers
- http://api.example.com: http://api.example.com ()


## Authentication methods
- Api key auth
- Basic auth
- Bearer auth


## Parameters


### Query parameters
- **master_timeout** (string)
  Period to wait for a connection to the master node.


## Responses
### 200


#### Body: application/json (object)
- **acknowledged** (boolean)
  For a successful response, this value is always true. On failure, an exception is returned instead.


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