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we have a large ec2 instance running in asia pacific region.we want to reserve that particular instance.In aws management console we see an option to purchase a reserved instance but there seems to be no option to change this instance into a reserved one.Are we missing out on something
Reserved instances are a billing feature, not a technical feature.
You can purchase a reserved instance and the discounted hourly rate will apply to already-running instances, without needing to do anything to them.
Just make sure the reserved instances you purchase are:
- in the same availability zone as your already-running instances
- of the same instance type (m1.small, c1.medium, etc) as your already-running instances.
As soon as the reservation cost clears your credit card you will see the discounted hourly rate take effect for your already-running instances.
Amazon's docs could be a lot clearer on this.
http://aws.amazon.com/ec2/reserved-instances/#4
The AWS's official docs state that the availability zone must be the same. The region is, for example, us-east-1. The AZ is us-east-1a. So, according to AWS, it has to be specific to the last letter.
However, some clever folks found a potential work-around that uses EC2 Consolidated Billing and combines the (odd?) feature that one's us-east-1a might be another us-east-1c (I guess the idea there is to enforce some homogeneity around the AZs).
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I looking for an AWS environment architecture where I can have more than 500 VPC. I do not see any AWS documentation where it has mentioned the VPC limit per root AWS account. From VPC FAQ it is clear that one account ( not root account ) can have only 5 VPC. Is there a limit for a number of VPC?
I am looking for AWS multi-tenant service where I may have 500 tenants if the business grows. Just want to be in the right direction before designing single VPC per customer/tenant. I am new to AWS and any help is appreciated.
Thanks
Sas
The account limit for vpc per region is 5. Its for the root account only.
Please check the respective docs from amazon aws at Amazon VPC limits
But, you can still ask for increase of VPC by creating case at:
Create case for increase in vpc limit
Sample case form:
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Closed 8 years ago.
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So in my network I have the main domain controller and a backup domain controller. The backup domain controller has exchange on it.
The exchange services have been shut down as I have moved email hosting off site. So I now have no need of that backup domain controller that was running exchange. I want to shut it down for good.
What would be the proper way to remove it from its role in active directory and a backup domain controller?
Both domain controllers are Server 2008.
Thanks much!
Firstly, just don't do it, this is a SysAdmin SIN! Your shooting yourself in the foot. Even for my smallest customers with only 10 members of staff, I often have them purchase a second server to act as a secondary domain controller, DNS server, DHCP Server etc.
It is the first and few things Microsoft recommends as best practice when setting up a domain and one of the first things that is taught to you when you do the MCSA course: When creating a domain a secondary domain controller should be set up. If you have more than 20 Users its a must IMHO. Many things can go wrong and too many times clients have incurred big bills(man hours) because they didnt spend that extra £2000 on another server. I strongly recommend you keep it. It's not just availability, it prevents a large number of corruption issues which can linger for weeks before presenting themselves which makes 7x daily backups no help. It's your sefety net.
If you must get rid of it, first check is doesn't hold the FSMO roles and run dcpromo following the steps here: http://technet.microsoft.com/en-us/library/cc771844(v=ws.10).aspx
Lastly, your getting down-voted because StackOverflow only like coding qustions and they want you to use ServerFault which is part of the same family.
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I launched a t1.micro instance running Apache and MySQL servers on Ubuntu. Basically I'm using it to host my photo sharing app that may have huge random spikes in terms of visitors.
How does AWS go about it?
Will the instance automatically upgrade to appropriate horse power to keep up with demand and growing storage demands?
No, you have to manually make your instance more powerful by first making sure it is in the stopped state (this requires EBS volumes or you'll lose your data), then going to the AWS console, right click your instance and select 'Change Instance Type'.
If you are interested in a more automated approach, I suggest an Elastic Load Balancer with an Auto-scaling policy. With Auto-scaling, Amazon will spin up or down new instances based on set points that you provide (i.e. CPU usage reaches 80% for 10 minutes).
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My portal will be mainly accessed in India and it involves uploading/viewing of images which means good data transfer will be involved.
If I host my portal on servers located in India; surely it will be faster to access the pages. But I want to personally use Amazon web services. Do we have option in Amazon so that we can host our tomcat server and save images on some servers located in India ; or at max. in Singapore so that access is fairly faster.
Amazon Web Services offers several AWS datacenter Regions for most of their Products & Services within their steadily expanding global infrastructure, amongst those the Asia Pacific (Singapore) Region (usually referred to as ap-southeast-1).
Furthermore they do offer even more so called edge locations for Amazon CloudFront, which is their Content delivery network (CDN) alike web service for content delivery.
You can see an overview of the current regions and edge locations on their Global Infrastructure map.
There is an API oriented Regions and Endpoints listing as well, see e.g. those for the Amazon Elastic Compute Cloud (EC2) (please note that not every region does necessarily support every single available product, especially beta offerings are usually available in us-east-1 only initially).
Consequently you should be fine using ap-southeast-1 for your use case, though as usual you might want to give it a try before settling on this, which is fairly easy to do by means of the AWS Free Usage Tier offering.
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I am not sure I understand the prices for EC2 instances.
Amazon writes:
Pricing is per instance-hour consumed for each instance, from the time an instance is launched until it is terminated.
So I will get billed for 100% a month, unless I terminate this instance completely and lose all the data on the instance-store? This confuses me, as the Amazon cloud is said to be a cheaper alternative. But for a Large instance I end up with about $250/month, which is quite expensive compared to other, non-cloud companies.
you will be billed 24 instance-hours per day if your instance (server) is online 24/7.
This is exactly the same as Windows Azure Web instances.
The be billed just for what I use, it's more about Files and Database, as the server should be always up and running.
If you compare VPS hosting companies with this prices, you will see Amazon/Windows are cheaper, keep in mind that you will have remote access to that server no matter what OS you are using (windows or Linux distro).
You can stop your instance can keep it's volumes. In that case you pay only for the storage while the instance is not running.