How to replace ebs root with another ebs root volume?

Question

I accidentally formatted my system and the access keys to that ec2 volume were also deleted. So I stopped the instance and separated the ebs volume.
However, I cannot connect it to another ec2 instance as root (/ dev / sda1). Can anyone guide me through this? All my data and server files are in the volume.
I installed the first ebs volume on both the second instance and looked at the files there. They are all intact. If it cannot be set as the root volume, I need a way to get all mysql data from the volume, since it has several Wordpress sites. I can access the wordpress files, but I don't know how to get the database from the instance.
Any of the solutions will save my life ... Thanks so much

Answer 1

What you need to do:

• Stop Instance
• Detach the current root EBS
• Attach the new EBS under /dev/sda1 (for Linux) and /dev/xvda (for Windows)
• Run your instance

Technically, this. In case of problems, you can always attach EBS as an undisturbed EBS (for example, /dev/sdb ) and look through the files and fix the error if possible.

Answer 2

Short answer description by @Avihoo Mamka .

If several drives are connected to your instance, and you just want to change the root drive, first you need to disconnect all the other drives, and only after that you can add a new root drive as / dev / sda 1 (for Linux)

Answer 3

attach to new instance see http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ebs-attaching-volume.html

mount it on Linux, see http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ebs-using-volumes.html , but go to step 5, don't do any formatting

Answer 4

 write-output "********ToolForReplaceRootVolumeWithSnapshot*********" write-output "" Write-Output "****************************************************** The tools main purpose is to create a new instance by using the Standard AMI and then stop the instance, detach the ebs volume, and delete it.Then using the snapshot which provided by the user to create a new volume and attach it to the instance. Then start the instance and report the instance ID *******************************************************" Write-Output "Please Press enter to continue..." $Choose=Read-Host Write-Output "Firstly, We will try to create a EBS volume base on the SnapshotID" Write-Output "Please input the snapshot ID which you provided" $SnapshotID=Read-Host Write-Output "Please input the Availability Zone which you provided" $AZ=Read-Host Write-output "Creating EBS volument ....." $EBS_Result=aws ec2 create-volume --availability-zone $AZ --snapshot-id $SnapshotID --volume-type gp2 Write-output "The EBS voulmn which you create is list below." echo $EBS_Result $EBSObject=echo $EBS_Result | ConvertFrom-Json $NewVolumnID=$EBSObject.VolumeID echo $NewVolumnID Write-Output "Secondaly, We will try to create a instance base on the AMI which you specify" Write-Output "Please Input the AMI ID which you want to use." $AMIID=Read-Host Write-Output "Please input the key-name that you want to use." $KeyName=Read-Host Write-Output "Please input the Security Group that you want" $SecurityGroup=Read-host Write-Output "Please input the subnetID that you want" $SubNet=Read-host Write-Output "The syste will going to create a instance by using the info that you provided" $InstanceID=aws ec2 run-instances --image-id $AMIID --count 1 --instance-type t2.micro --key-name $KeyName --security-group-ids $SecurityGroup --subnet-id $SubNet --placement "AvailabilityZone=$AZ" Write-Output "The EC2 information was listed below" echo $InstanceID $Instance=echo $InstanceID | ConvertFrom-Json $id=$Instance.Instances.InstanceId echo $id $DecribeResult=aws ec2 describe-instances --instance-ids $id $oldEBSID=(echo $DecribeResult | ConvertFrom-Json).Reservations.Instances.BlockDeviceMappings.Ebs.VolumeId Write-Output "The Old EBS volume ID is list below" echo $oldEBSID Write-Output "Going to stop the instance, However, We should waiting for 1 minutes to let the instance start finished." sleep(60) $stop_result=aws ec2 stop-instances --instance-ids $id echo $stop_result Write-Output "In order to make sure the instance is sleeped. stop 80s for easy" sleep(80) Write-Output "Trying to detach the volume" $detachResult=aws ec2 detach-volume --volume-id $oldEBSID echo $detachResult Write-Output "Inorder to make sure the detach is finished. stop 10s for easy" sleep(10) Write-Output "Trying to attach the new volume" aws ec2 attach-volume --volume-id $NewVolumnID --instance-id $id --device /dev/sda1 Write-Output "Trying to start the instance" aws ec2 start-instances --instance-ids $id Write-Output "Trying to delete the old volume" aws ec2 delete-volume --volume-id $oldEBSID Write-Output "Now you can trying to contact the below instanceID" echo $id $end=read-host 

Answer 5

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