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scp (secure copy) to ec2 instance without password

I have an EC2 instance running (FreeBSD 9 AMI ami-8cce3fe5), and I can ssh into it using my amazon-created key file without password prompt, no problem.

However, when I want to copy a file to the instance using scp I am asked to enter a password:

scp somefile.txt -i mykey.pem root@my.ec2.id.amazonaws.com:/

Password:

Any ideas why this is happening/how it can be prevented?

Are you using excatly the same identifier for the user and host?
I'm not sure I understand what you mean by identifier, could you explain?
if for one connection you use an Ip address and for the other you use a name it will not work. I just saw that you use -i option to provide your identity. May be you should also show the command you use to log in with ssh.
thanks lynch, figured it out!

W
Westy92

I figured it out. I had the arguments in the wrong order. This works:

scp -i mykey.pem somefile.txt root@my.ec2.id.amazonaws.com:/

from who understand how to connect to ec2 through ssh, just change the ssh command to scp and add the name file after the pem file.
Since this answer is a little old, a more recent example from my new EC2 instance: scp -i kp1.pem ./file.txt ec2-user@1.2.3.4:/home/ec2-user
@siliconrockstar Your statement ec2-user@1.2.3.4:/home/ec2-user is easily replaced with the shorter and easier ec2-user@1.2.3.4:./ ./ FTW!
A very late comment, but what @ClaudioSantos suggests doesn't work exactly if you're using a non-standard port. It's -p for ssh and -P for scp.
I can use my *.PEM file to ssh into ec2. however, when I want to use it to SCP a file, it gives me the "Permission Denied" error! How can I solve this?
S
Syed Priom
scp -i /path/to/your/.pemkey -r /copy/from/path user@server:/copy/to/path

(-r) parameter is not required but it's required to remove (/) from the end of remote path. Your example worked for me, Thanks a lot
J
Jamil Noyda

copy a file from a local server to a remote server

sudo scp -i my-pem-file.pem ./source/test.txt ec2-user@1.2.3.4:~/destination/

copy a file from a remote server to a local machine

sudo scp -i my-pem-file.pem ec2-user@1.2.3.4:~/source/of/remote/test.txt ./where/to/put

So the basically syntax is:-

scp -i my-pem-file.pem username@source:/location/to/file username@destination:/where/to/put

-i is for the identity_file


R
Renato Coutinho

I've used below command to copy from local linux Centos 7 to AWS EC2.

scp -i user_key.pem file.txt ec2-user@my.ec2.id.amazonaws.com:/home/ec2-user

P
Pritam Banerjee

Making siliconerockstar's comment an answer since it worked for me

scp -i kp1.pem ./file.txt ec2-user@1.2.3.4:/home/ec2-user

D
Dele
scp -i ~/.ssh/key.pem ec2-user@ip:/home/ec2-user/file-to-copy.txt .

The file name shouldnt be between the pem file and the ec2-user string - that doesnt work. This also allows you to reserve the name of the copied file.


Y
Yatender Singh

lets assume that your pem file and somefile.txt you want to send is in Downloads folder

scp -i ~/Downloads/mykey.pem ~/Downloads/somefile.txt root@my.ec2.id.amazonaws.com:~/

let me know if it doesn't work


scp -i /Users/Username/Downloads/myfile.pem -r ubuntu@my.ect.id.amazonaws.com:~/ ~/Desktop/ in case u want to transfer file from server to local
Thanks I got "access denied" with :/ at the end but with :~/ it works
yeah because :/ is root folder and :~/ is user folder so if you are root user then :/ or :~/ anything will work and if you are not root user then only :~/ you have to use.
P
ProfGhost

scp -i /home/barkat/Downloads/LamppServer.pem lampp_x64_12.04.tar.gz

this will be very helpful to all of you guys


f
fall14123

My hadoopec2cluster.pem file was the only one in the directory on my local mac, couldn't scp it to aws using scp -i hadoopec2cluster.pem hadoopec2cluster.pem ubuntu@serverip:~.

Copied hadoopec2cluster.pem to hadoopec2cluster_2.pem and then scp -i hadoopec2cluster.pem hadoopec2cluster_2.pem ubuntu@serverip:~. Voila!


B
BuvinJ

I was hung up on this because I was specifying my public key file in

scp -i [private key file path]

When I caught that mistake and changed it to the private key path instead, I was all set.


S
Shawn

In your case, the user root won't have any issues. But in certain cases where you're required to login under SSH as a different user, make sure the directory you're scp-ing has adequate permissions for the user you're SSH-ing.


m
mechnicov

To use PSCP, you need the private key you generated in Converting Your Private Key Using PuTTYgen. You also need the public DNS address of your Linux instance

pscp -i C:\path\my-key-pair.ppk C:\path\Sample_file.txt ec2-user@public_dns:/home/ec2-user/Sample_file.txt

庄景鹏

write this code

scp -r -o "ForwardAgent=yes" /Users/pengge/11.vim root@192.168.2.228:/root/

If you have a SSH key with access to the destination server and the source server does not, adding -o "ForwardAgent=yes" will allow you to forward your SSH agent to the source server so that it can use your SSH key to connect to the destination server.


T
Tejas Tank

For ec2 server

#move your key to /tmp or right folder on server

Assign right permission

sudo chmod 600 /tmp/dev-sunrobotics-snippetbucketcom.pem

Than connect to server or transfer

scp -i /tmp/dev-snippetbucketcom.pem filestore.tar.gz ubuntu@9.911.99.91:/tmp

Make sure in your ip security you have allow ip address to connect


U
Unheilig

Just tested:

Run the following command:

sudo shred -u /etc/ssh/*_key /etc/ssh/*_key.pub

Then:

create ami (image of the ec2). launch from new ami(image) from step no 2 chose new keys.