-n instance_count

The number of instances to launch. If Amazon EC2 cannot launch the specified number of instances, no instances will launch. If this is specified as a range (min-max), Amazon EC2 will try to launch the maximum number, but no fewer than the minimum number.

Default: 1

Example: -n 5

No

-g group

The security group(s) within which to launch the instances. This determines the ingress firewall rules applied to the instances. If you specify more than one group, the security policy will be the union of the security policies of the specified groups.

Default: The default group.

Example: -g fooGroup

No

-k keyname

The key pair to make available to these instances at boot.

Example: -k fooKeyPair

No

-d user_data

Data to make available to the instances. This data is read from the command line of the USER_DATA argument. If you want the data to be read from a file, see the -f option.

Example: -d "my user data"

No

-f user_data_file

Data to make available to these instances. The data is read from the file specified by FILE_NAME. To specify user data on the command line, use the -d option.

Example: -f data.zip

No

--addressing addressing_type

The address type with which the instance launches.

Valid Value: public

	Note
	To support the early beta legacy networking scheme, direct is supported for early beta users. For more information on instance addressing, see Instance Addressing.

Example: --addressing public

No

--instance-type instance_type

The type of instance to launch. For more information, see Selecting Instance Types.

Example: --instance-type m1.small

No