Using scp to copy a file to Amazon EC2 instance?

问题

I am trying to use my Mac Terminal to scp a file from Downloads (phpMyAdmin I downloaded online) to my Amazon EC2 instance.

The command I used was:

scp -i myAmazonKey.pem phpMyAdmin-3.4.5-all-languages.tar.gz  hk22@mec2-50-17-16-67.compute-1.amazonaws.com:~/.

The error I got: Warning: Identity file myAmazonKey.pem not accessible: No such file or directory. Permission denied (publickey). lost connection

Both my myAmazonkey.pem and phpMyAdmin-3.4.5-all-languages.tar.gz are in Downloads, so then I tried

scp -i /Users/Hello_Kitty22/Downloads/myAmazonKey.pem /Users/Hello_Kitty22/Downloads/phpMyAdmin-3.4.5-all-languages.tar.gz  hk22@mec2-50-17-16-67.compute-1.amazonaws.com:~/.

and the error I got: Warning: Identity file /User/Hello_Kitty22/Downloads/myAmazonkey.pem not accessible: No such file or directory. Permission denied (publickey). lost connection

Can anyone please tell me how to fix my problem?

p.s. there is a similar post: scp (secure copy) to ec2 instance without password but it doesn't answer my question.

回答1:

Try specifying the user to be ec2-user, e.g.

scp -i myAmazonKey.pem phpMyAdmin-3.4.5-all-languages.tar.gz ec2-user@mec2-50-17-16-67.compute-1.amazonaws.com:~/.

See Connecting to Linux/UNIX Instances Using SSH.

回答2:

second directory is your target destination, don't use server name there. In other words, you don't need to mention machine name for the machine you're currently in.

scp -i /path/to/your/.pemkey -r /copy/from/path user@server:/copy/to/path

-r if it's a directory.

回答3:

Your key must not be publicly viewable for SSH to work. Use this command if needed:

chmod 400 yourPublicKeyFile.pem

回答4:

You should be on you local machine to try the above scp command.

On your local machine try:

scp -i ~/Downloads/myAmazonKey.pem ~/Downloads/phpMyAdmin-3.4.5-all-languages.tar.gz  hk22@mec2-50-17-16-67.compute-1.amazonaws.com:~/.

回答5:

Here are the details of what works for an EC2 instance:

scp -i /path/to/whatever.pem /users/me/path-to-file ec2-user@ec2-55-55-555-555.compute-1.amazonaws.com:~

Few notes for beginning:

Note the spaces between the three parameters given after the -i
scp stands for secure copy protocol. Knowing the words makes it easier to remember the command.
-i dictates that you need to give the .pem file as the next param. If there is no -i, than you do not need a .pem.
Note the :~ at the end of the destination for the EC2 instance.

回答6:

I had exactly same problem, my solution was to

scp -i /path/pem -r /path/file/ ec2-user@public aws dns name: (leave it blank here)

once you done this part, get into ssh server and mv file to desired location

回答7:

scp -i ~/path to pem file/file.pem -r(for directory) /PATH OF LOCAL/localfile user@hostname:PATH OF SERVER/serverdirectory

回答8:

Below SCP format works for me

scp -i /path/my-key-pair.pem ec2-user@ec2-198-51-100-1.compute-1.amazonaws.com:~/SampleFile.txt ~/SampleFile2.txt

SampleFile.txt: It will be the path from your root directory(In my case, /home/ubuntu). in my case the file which I wanted to download was at /var/www

SampleFile2.txt: It will be path of your machine's root path(In my case, /home/MyPCUserName)

So, I have to write below command

scp -i /path/my-key-pair.pem ec2-user@ec2-198-51-100-1.compute-1.amazonaws.com:~/../../var/www/Filename.zip ~/Downloads

回答9:

Send file from Local to Server:

scp -i .ssh/awsinstance.pem my_local_file ubuntu@XX.XXX.XXX.XXX:/home/ubuntu

Download file from Server to Local:

scp -i .ssh/awsinstance.pem ubuntu@XX.XXX.XXX.XXX:/home/ubuntu/server_file .

回答10:

The process of using SCP to copy files from a local machine to an AWS EC2 Linux instance is covered step-by-step (including the points mentioned below) in this video.

To correct this particular issue with using SCP:

You need to specify the correct Linux user. From Amazon:
- For Amazon Linux, the user name is ec2-user.
- For RHEL, the user name is ec2-user or root.
- For Ubuntu, the user name is ubuntu or root.
- For Centos, the user name is centos.
- For Fedora, the user name is ec2-user.
- For SUSE, the user name is ec2-user or root.
- Otherwise, if ec2-user and root don't work, check with your AMI provider.
Your private key must not be publicly visible. Run the following command so that only the root user can read the file.
```
chmod 400 /path/to/yourKeyFile.pem
```

回答11:

Check the permissions on the .pem file...openssh usually doesn't like world-readable private keys, and will fail (iir, scp doesn't do a great job of providing this feedback to the user).

Can you simply ssh with that key to your AWS host?

回答12:

First you should change the mode of .pem file from read and write mode to read only mode. This can be done just by a single command in terminal sudo chmod 400 your_public_key.pem

回答13:

I tried all the suggestions mentioned above and nothing worked. I terminated the current instance, launched another one and repeated the same exact process. This time no problems. Sometimes it might be the remote ami's fault.