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Amazon EC2 down?

status.aws.amazon.com

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Re: Amazon EC2 down?

#41

Post by raverbashing »

kunalmodi wrote: post #24
monsenhor wrote: post #22

Earlier quoted context omitted.

We work with 3 providers. Today 2 of then go down. Just Linode is ok now.

ironically, we moved away from linode last month because they kept doing maintenance and turning off our machines without telling us

Really?

I had 2 (short, scheduled) downtimes with Linode. Since 2009

Re: Amazon EC2 down?

#42

Post by datr »

adamlindsay wrote: post #28
reustle wrote: post #26

Earlier quoted context omitted.

They keep saying it happened in a single availability zone when I saw frantic tweets from people in 1A, 1C and 1D.

Everyone's A zone is different. So I could say A is down while someone else is saying B, and we could be talking about the exact same zone. It makes it difficult to say if it is more widespread or not.

Maybe I'm assuming wrong but I guess in your example zone A and B are the same and that the different zone names users see don't represent different ways of spreading resources. If so, why aren't they named consistently? If not, are there any details on how and why they've set up their zones (or am I overlooking another assumption I've made?)

Re: Amazon EC2 down?

#43

Post by asdfaoeu »

datr wrote: post #42
adamlindsay wrote: post #28

Earlier quoted context omitted.

Everyone's A zone is different. So I could say A is down while someone else is saying B, and we could be talking about the exact same zone. It makes it difficult to say if it is more widespread or not.

Maybe I'm assuming wrong but I guess in your example zone A and B are the same and that the different zone names users see don't represent different ways of spreading resources. If so, why aren't they named consistently? If not, are there any details on how and why they've set up their zones (or am I overlooking another assumption I've made?)

If they weren't different it would likely everyone would just pick the same first zone, this way they can randomly assign resources keeping it even.

Re: Amazon EC2 down?

#44

Post by saurik »

datr wrote: post #42
adamlindsay wrote: post #28

Earlier quoted context omitted.

Everyone's A zone is different. So I could say A is down while someone else is saying B, and we could be talking about the exact same zone. It makes it difficult to say if it is more widespread or not.

Maybe I'm assuming wrong but I guess in your example zone A and B are the same and that the different zone names users see don't represent different ways of spreading resources. If so, why aren't they named consistently? If not, are there any details on how and why they've set up their zones (or am I overlooking another assumption I've made?)

Due to a quirk of both human nature and copy/paste example code, if the names of the availability zones were mapped the same for all users then 90% of requests would be to the zone named "A". To make certain that the zones get even usage, as they bring on new customers, they change the A-D order of the availability zones as seen by these new accounts.

Re: Amazon EC2 down?

#46

Post by rlpb »

ww520 wrote: post #32
kunalmodi wrote: post #19

Earlier quoted context omitted.

how are you quickly failing over from one to another?

If your site has little dependency among itself, then you can use DNS round robin to include IP's from all hosting companies.

If you use DNS round robin, then you pretty much guarantee that everyone will be affected if just one hosting company is down. DNS round robin is not the tool for this job.

Re: Amazon EC2 down?

#47

Post by ch0wn »

kunalmodi wrote: post #24
monsenhor wrote: post #22

Earlier quoted context omitted.

We work with 3 providers. Today 2 of then go down. Just Linode is ok now.

ironically, we moved away from linode last month because they kept doing maintenance and turning off our machines without telling us

Interesting. We moved away from VPS.net for a similar reason. There were multiple occasions where hosts got shut down and support couldn't tell us the reason for it. Since we're using hand-rolled virtualization on top of a few rented servers, we're basically problem-free.

Re: Amazon EC2 down?

#48

Post by yuvadam »

dsirijus wrote: post #45

Am I at fault in believing this happens drastically less in Europe datacenters, for any cloud service?

I believe that, at least for AWS, the us-east data center is drastically larger than eu-west.

Re: Amazon EC2 down?

#50

Post by disbelief »

dsirijus wrote: post #45

Am I at fault in believing this happens drastically less in Europe datacenters, for any cloud service?

I've been wondering this myself lately. It seems that every major EC2 outage hits US-East. By comparison, my US-West instances have way better uptime (granted, over a shorter test period). I've never tried the Europe or Asia zones, but I'm tempted to now.
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