Is there any way to figure out which region an AWS EBS snapshot lives in?
A collaborator shared an ebs snapshot with me but I'm having a very slow transfer rate when I attached it to my instance (which is in USEAST-1d). I was wondering if the snapshot lived somewhere else but couldn't find a way to check it.
Snapshots operate on Amazon EC2 regional scope. You cannot create a volume from a snapshot residing in different region. Since you are able to create a volume in US-East-1A, i assume your snapshot also resides on US-East region.
Also as eric mentioned it is not possible to attach a snapshot to an EC2 directly, you have to create an EBS volume and then attach the volume to EC2 instance
Related
Scenario
I currently have an EC2 instance with a root EBS volume attached to it of 30gb and i have some files stored in that EBS
If i delete the EC2 instance and have delete on termination false then EBS persists.
Desired outcome
I want to provision a new EC2 (provisioned by auto scaling group) instance such that it uses the old EBS volume as its root volume which was detached as a result of me terminating the old instance
Note
I want to have the liberty of choosing OS of newly provisioned EC2 so creating an AMI does not work
You cannot directly launch a new Amazon EC2 instance with an existing Amazon EBS volume. Instead, you would need to:
Launch a new Amazon EC2 instance with a new root volume
Stop the instance
Detach the root volume
Attach the 'old' EBS volume
Start the instance
Storing data in root EBS volume might be a bad idea to start with.
Consider one of the following:
Mount another EBS volume to the instance to store required data only.
https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ebs-using-volumes.html
best performance, highest cost/effort, but your application doesn't
change a bit.
Create EFS and mount it to your instances. https://docs.aws.amazon.com/efs/latest/ug/mounting-fs.html -
reasonable effort, minimal if any changes to the application.
Store data in S3. Ideal from price standpoint; requires changes to the application.
i m running ec2 instance in 1 region i want to create snapshots of ec2 instances in other region directly without coping and cross region replication in s3, is this possible? if possible then how?
Amazon EBS Snapshots are created in the same region as the original EBS Volume. They can then be used to create a new Volume within the same Region.
If you wish to use an Amazon EBS Snapshot in a different region, the snapshot must first be copied to the other Region. This can done via the Amazon EC2 management console, the AWS Command-Line Interface (CLI) aws ec2 copy-snapshot command, or an AWS API call.
Please note that snapshots are incremental backups. The first snapshot isn't really a full backup. Rather, every snapshot simply copies any blocks that have been modified since any previous snapshot. Blocks are retained while snapshots still require the blocks. This means that blocks made during the initial snapshot could actually be deleted if they are not required by any active snapshots. This is why I say they are not the same as a full backup, which traditionally never has content deleted.
However, when a snapshot is copied to a new region it is copied in full, rather than incrementally.
If you do not with to copy an EBS snapshot between regions, you would need to find a different way to transfer the disk volume (eg filesystem-level synchronisation).
In fact, there should typically be no need to transfer a disk volume -- rather, your systems should be capable of configuring a new server based upon a startup configuration script and data should be stored in a separate database so that it is accessible to multiple instances. It is a very rare case that requires a complete copy of a disk volume.
I understand that EBS volumes that are restored from snapshots need to be initialized.
Let's say I create an AMI from an EBS snapshot(s).
When I launch a new instance using that AMI, will I need to initialize each volume before I get consistent latency?
When you create an instance from AMI which has EBS based volumes as storage, your instance creates new volume from this volume and continues with launch.
When you use snapshots as source to launch your instance, AWS need to pull these snapshots and write it to volume and then continue with the launch. In this case, pull storage blocks from S3 and write to volume will be the latency some users want to avoid. This is the case where pre-warming is suggested by AWS.
I'm using an EC2 instance on amazon and have mounted a 1TB ephemeral to the instance. The instance is an on-demand instance that costs $5 an hour. I was wondering whether there is anyway that I could stop (not terminate) the instance and still keep my data on the mounted ephemeral drive?
The Amazon EC2 Instance Store documentation says that if I stop it, I will lose the data. Does anyone have a solution?
Instance Store is disk storage directly-attached to the Amazon EC2 host machine. When an EC2 instance is Stopped, the virtual machine is removed and it loses the CPU, RAM and Instance store so that it can be allocated to another user.
Data saved on Amazon EBS disk volumes are retained because this is network-attached storage that is kept separate from the Host computer.
The only way to "save" your data is to copy it to another location (eg an EBS volume or Amazon S3 bucket) before stopping the instance.
You can use Amazon Elastic Block Store volumes for an ec2 instances. Once you stopped your instance, ebs volumes will retain the data. You can take snapshots on your ebs volume by specific time or incremental snapshot based on your requirement. BTW, You can store the snapshot in AWS S3 bucket for backup purposes. You can copy snapshot to different region via AWS Management Console or AWS API calls.
If you choose instance store volume type, you will lose your data. For persistent disk storage you can choose AWS EBS volumes.
We have 10 EC2 instances and each of them has it's own EBS volumes, none of them are tagged and now i selected all the EBS volumes at once an detached them from their current EC2 instances.I want to attach those EBS volumes back to their respective EC2 instances just as they were attached before i detached them.
Question : How do i find which EC2 instance was connected to which EBS volume previously, I want to find this info and re-attach them as they were previously present
There is a way.
Go to https://console.aws.amazon.com/cloudtrail
Set Filter = Resource Name & enter volume-id.
It'll give you all events regarding the volume you've provided.
Hope it'll help :)
You can configure CloudTrail for the same. You can get the API logs from CloudTrail when you delete or attache EBS volumes. From CloudTrail you can find EBS volume which was attached to the instance.