AvailabilityZone Property

The Availability Zone within which to launch the instance.

Syntax

 ec2.getAvailabilityZone([callback])
 ec2.setAvailabilityZone( availabilityZone, [callback])

Default Value

""

Callback

The 'callback' parameter specifies a function which will be called when the operation completes (or an error is encountered). If the 'callback' parameter is not specified, then the method will block and will not return until the operation completes (or an error is encountered).

The callback for the getAvailabilityZone([callback]) method is defined as:

function(err, data){ }

'err' is the error that occurred. If there was no error, then 'err' is 'null'.

'data' is the value returned by the method.

The callback for the setAvailabilityZone([callback]) method is defined as:

function(err){ }

'err' is the error that occurred. If there was no error, then 'err' is 'null'.

'err' has 2 properties which hold detailed information:

err.code
err.message

Remarks

This method allows the user to define a geographic location in which to launch the EC2 Image. This is used while calling StartInstance. If none is specified, EC2 selects one automatically.

Use the ListAvailabilityZones method to get a list of valid availability zones for the user.

This functionality is provided to add the ability to protect your applications against failure in one location.

Data Type

String