クラウドウォッチ
AWS管理ツールであるYlasticが新機能リリース
2010年02月08日
AWS管理ツールである米Yalsticが新機能をリリースした。
新機能は、以下の３機能。
(1)cronと同様にタスクをスケジューリングする機能
(2)us-westのスケジューリングサポート
(3)Auto-Scalingとは別に時間単位でスケーリングする機能
英文の発表は以下のとおり（クラウドニュース編集部）
(1) Flexible and recurring task scheduling with cron : You can now schedule your tasks to recur in a much more flexible way using the cron syntax. In the new task creation dialog, pick 'cron' for the scheduling type and provide the recurring schedule string in cron format.This will cover pretty much any kind of recurring time periods that you might need.
(2)Support for US West region for scheduling : You can now schedule tasks for the US West region.
(3)Task for adjusting desired scaling capacity : There is also a new scheduling task available that lets you adjust the desired capacity of a scaling group on a scheduled basis. This opens the door to doing some really neat things by allowing you to do time-based scaling of your EC2 fleet as opposed to the AWS provided load-based scaling. You do not have to use auto-scaling in order to take advantage of this task, as it is quite useful to leverage this EC2 functionality to provide some very interesting workflows.
It is quite simple to setup:
o Create a launch configuration from the AMI or instance of your choice.
o Create an auto-scaling group using that launch configuration.
o Add a scheduled task to adjust the scaling group capacity. You can create one task that expands the capacity, and another matching task that shrinks the capacity. (You can set the desired capacity for a group to 0 by setting both the min and max to 0.)
So what are some of the things that you can use it for?
* Automatically launching a fleet of instances at a certain time everyday and then automatically terminating them at a certain time everyday. This is almost like having your own 9-5 work/development environment.
* Batch/reporting jobs on a recurring schedule.
* This is very much like having a new kind of an EC2 instance available - one that is only kept running for a certain period of time!
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