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Another AWS reboot planned for March

For AWS shops, news of another reboot in the EC2 fleet shows the cloud provider is staying on top of its security responsibilities.

Amazon Web Services will reboot a portion of its server fleet over the next two weeks.

The reboot is necessary due to a Xen vulnerability that will be disclosed in detail on March 10. An Amazon Web Services (AWS) security advisory said it will affect fewer than 10% of its servers.

"We have built the capability to live-update the vast majority of our fleet; however, we have not yet enabled this capability on some of our older hardware," the advisory read. "This older hardware is what's being rebooted."

Instances that are rebooted will return to normal operation after the reboot, and instance configuration and data will be retained, including data on local hard drives, the advisory said. Users will not be able to stop and start or re-launch instances to avoid the update if their hardware is affected. Startup procedures that aren't automated during the instance boot process will need to be re-run.

IT pros were left scrambling following news of a similar reboot in September, but this week, AWS shops had more assurance from that experience that the reboot will go smoothly.

"It does not at all scare me," said Kevin Felichko, CTO of PropertyRoom.com, an online auction company based in Frederick, Md. "We architected our infrastructure to handle failure as if it were a normal thing. If we receive notice [that it will affect our servers], we will simply mark the maintenance window on our calendars and verify all is well."

If you are not paying attention and properly managing your AWS environment, the impact may be painful.
John TreadwaySenior Vice President, Cloud Technology Partners

Undoubtedly, the reboot will impact some users, according to John Treadway, senior vice president with Cloud Technology Partners, based in Boston. With proper planning and operational controls, the reboot should not cause customers any real difficulty, Treadway added.

"The bottom line is that this is really not a big deal and is actually evidence that AWS is on top of their infrastructure security," Treadway said. "Of course, if you are not paying attention and properly managing your AWS environment, the impact may be painful. But really, whose fault is that? Not Amazon's."

The AWS advisory also contains a frequently asked questions session that hints that the reboot could affect some secondary services. Users will be notified if instances that underpin WorkSpaces, Relational Database Service (RDS), ElastiCache and RedShift are affected.

AWS has also pledged not to reboot instances in multiple regions at the same time, especially with RDS instances.

Beth Pariseau is senior news writer for SearchAWS. Write to her at bpariseau@techtarget.com or follow @PariseauTT on Twitter.

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Does last fall’s reboot give you more confidence about this new AWS reboot?
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The latest reboot actually does not give us more confidence in the product, it gives less. If there has been a need for two reboots within a six month period, it shows something is not quite right with AWS and its functionality.
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How many servers do you need to have before you can class them as a “fleet” ?
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2 - one in each AZ for your region :)
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It is good to see that Amazon is working to get all of their equipment to the point of live updates. Reboots will affect businesses.
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