NAME VM::EC2::REST::spot_instance

SYNOPSIS

            

              
              
use VM::EC2 ':misc';
            
          

METHODS

These methods allow you to request spot instances and manipulate spot data feed subscriptions.

Implemented: CancelSpotInstanceRequests CreateSpotDatafeedSubscription DeleteSpotDatafeedSubscription DescribeSpotDatafeedSubscription DescribeSpotInstanceRequests DescribeSpotPriceHistory RequestSpotInstances

Unimplemented: (none)

$subscription = $ec2->create_spot_datafeed_subscription($bucket,$prefix)

This method creates a spot datafeed subscription. Provide the method with the name of an S3 bucket associated with your account, and a prefix to be appended to the files written by the datafeed. Spot instance usage logs will be written into the requested bucket, and prefixed with the desired prefix.

If no prefix is specified, it defaults to "SPOT_DATAFEED_";

On success, a VM::EC2::Spot::DatafeedSubscription object is returned;

Only one datafeed is allowed per account;

$boolean = $ec2->delete_spot_datafeed_subscription()

This method delete's the current account's spot datafeed subscription, if any. It takes no arguments.

On success, it returns true.

$subscription = $ec2->describe_spot_datafeed_subscription()

This method describes the current account's spot datafeed subscription, if any. It takes no arguments.

On success, a VM::EC2::Spot::DatafeedSubscription object is returned;

@spot_price_history = $ec2->describe_spot_price_history(@filters)

This method applies the specified filters to spot instances and returns a list of instances, timestamps and their price at the indicated time. Each spot price history point is represented as a VM::EC2::Spot::PriceHistory object.

Option arguments are:

            

              
              
-start_time      Start date and time of the desired history
                 data, in the form yyyy-mm-ddThh:mm:ss (GMT).
                 The Perl DateTime module provides a convenient
                 way to create times in this format.
-end_time        End date and time of the desired history
                 data.
-instance_type   The instance type, e.g. "m1.small", can be
                 a scalar value or an arrayref.
-product_description  The product description. One of "Linux/UNIX",
                 "SUSE Linux"  or "Windows". Can be a scalar value
                 or an arrayref.
-availability_zone A single availability zone, such as "us-east-1a".
-max_results     Maximum number of rows to return in a single
                 call.
-next_token      Specifies the next set of results to return; used
                 internally.
-filter          Hashref containing additional filters to apply,
            
          

The following filters are recognized: "instance-type", "product-description", "spot-price", "timestamp", "availability-zone". The '*' and '?' wildcards can be used in filter values, but numeric comparison operations are not supported by the Amazon API. Note that wildcards are not generally allowed in the standard options. Hence if you wish to get spot price history in all availability zones in us-east, this will work:

            

              
              
$ec2->describe_spot_price_history(-filter=>{'availability-zone'=>'us-east*'})
            
          

but this will return an invalid parameter error:

            

              
              
$ec2->describe_spot_price_history(-availability_zone=>'us-east*')
            
          

If you specify -max_results, then the list of history objects returned may not represent the complete result set. In this case, the method more_spot_prices() will return true. You can then call describe_spot_price_history() repeatedly with no arguments in order to retrieve the remainder of the results. When there are no more results, more_spot_prices() will return false.

            

              
              
my @results = $ec2->describe_spot_price_history(-max_results       => 20,
                                                -instance_type     => 'm1.small',
                                                -availability_zone => 'us-east*',
                                                -product_description=>'Linux/UNIX');
print_history(\@results);
while ($ec2->more_spot_prices) {
   @results = $ec2->describe_spot_price_history
   print_history(\@results);
}
            
          

@requests = $ec2->request_spot_instances(%args)

This method will request one or more spot instances to be launched when the current spot instance run-hour price drops below a preset value and terminated when the spot instance run-hour price exceeds the value.

On success, will return a series of VM::EC2::Spot::InstanceRequest objects, one for each instance specified in -instance_count.

Required arguments:

            

              
              
-spot_price        The desired spot price, in USD.
-image_id          ID of an AMI to launch
-instance_type     Type of the instance(s) to launch, such as "m1.small"
            
          

Optional arguments:

            

              
              
-instance_count    Maximum number of instances to launch (default 1)
-type              Spot instance request type; one of "one-time" or "persistent"
-valid_from        Date/time the request becomes effective, in format
                     yyyy-mm-ddThh:mm:ss. Default is immediately.
-valid_until       Date/time the request expires, in format 
                     yyyy-mm-ddThh:mm:ss. Default is to remain in
                     effect indefinitely.
-launch_group      Name of the launch group. Instances in the same
                     launch group are started and terminated together.
                     Default is to launch instances independently.
-availability_zone_group  If specified, all instances that are given
                     the same zone group name will be launched into the 
                     same availability zone. This is independent of
                     the -availability_zone argument, which specifies
                     a particular availability zone.
-key_name          Name of the keypair to use
-security_group_id Security group ID to use for this instance.
                   Use an arrayref for multiple group IDs
-security_group    Security group name to use for this instance.
                   Use an arrayref for multiple values.
-user_data         User data to pass to the instances. Do NOT base64
                   encode this. It will be done for you.
-availability_zone The availability zone you want to launch the
                   instance into. Call $ec2->regions for a list.
-zone              Short version of -availability_aone.
-placement_group   An existing placement group to launch the
                   instance into. Applicable to cluster instances
                   only.
-placement_tenancy Specify 'dedicated' to launch the instance on a
                   dedicated server. Only applicable for VPC
                   instances.
-kernel_id         ID of the kernel to use for the instances,
                   overriding the kernel specified in the image.
-ramdisk_id        ID of the ramdisk to use for the instances,
                   overriding the ramdisk specified in the image.
-block_devices     Specify block devices to map onto the instances,
                   overriding the values specified in the image.
                   See run_instances() for the syntax of this argument.
-block_device_mapping  Alias for -block_devices.
-network_interfaces  Same as the -network_interfaces option in run_instances().
-monitoring        Pass a true value to enable detailed monitoring.
-subnet            The ID of the Amazon VPC subnet in which to launch the
                    spot instance (VPC only).
-subnet_id         deprecated
-addressing_type   Deprecated and undocumented, but present in the
                     current EC2 API documentation.
-iam_arn           The Amazon resource name (ARN) of the IAM Instance Profile (IIP)
                     to associate with the instances.
-iam_name          The name of the IAM instance profile (IIP) to associate with the
                     instances.
-ebs_optimized     If true, request an EBS-optimized instance (certain
                     instance types only).
            
          

@requests = $ec2->cancel_spot_instance_requests(@request_ids)

This method cancels the pending requests. It does not terminate any instances that are already running as a result of the requests. It returns a list of VM::EC2::Spot::InstanceRequest objects, whose fields will be unpopulated except for spotInstanceRequestId and state.

@requests = $ec2->describe_spot_instance_requests(@spot_instance_request_ids)

@requests = $ec2->describe_spot_instance_requests(\%filters)

@requests = $ec2->describe_spot_instance_requests(-spot_instance_request_id=>\@ids,-filter=>\%filters)

This method will return information about current spot instance requests as a list of VM::EC2::Spot::InstanceRequest objects.

Optional arguments:

            

              
              
-spot_instance_request_id   -- Scalar or arrayref of request Ids.
-filter                     -- Tags and other filters to apply.
            
          

There are many filters available, described fully at http://docs.amazonwebservices.com/AWSEC2/latest/APIReference/index.html?ApiReference-ItemType-SpotInstanceRequestSetItemType.html:

            

              
              
availability-zone-group
create-time
fault-code
fault-message
instance-id
launch-group
launch.block-device-mapping.delete-on-termination
launch.block-device-mapping.device-name
launch.block-device-mapping.snapshot-id
launch.block-device-mapping.volume-size
launch.block-device-mapping.volume-type
launch.group-id
launch.image-id
launch.instance-type
launch.kernel-id
launch.key-name
launch.monitoring-enabled
launch.ramdisk-id
launch.network-interface.network-interface-id
launch.network-interface.device-index
launch.network-interface.subnet-id
launch.network-interface.description
launch.network-interface.private-ip-address
launch.network-interface.delete-on-termination
launch.network-interface.group-id
launch.network-interface.group-name
launch.network-interface.addresses.primary
product-description
spot-instance-request-id
spot-price
state
status-code
status-message
tag-key
tag-value
tag:<key>
type
launched-availability-zone
valid-from
valid-until
            
          

SEE ALSO

VM::EC2

AUTHOR

Lincoln Stein <lincoln.stein@gmail.com>.

Copyright (c) 2011 Ontario Institute for Cancer Research

This package and its accompanying libraries is free software; you can redistribute it and/or modify it under the terms of the GPL (either version 1, or at your option, any later version) or the Artistic License 2.0. Refer to LICENSE for the full license text. In addition, please see DISCLAIMER.txt for disclaimers of warranty.

cpanm RetryTimer

perl -MCPAN -e shell
install RetryTimer