Trying to SSH into an Amazon Ec2 instance

 

This is probably a stupidly simple question to some :)

I've created a new linux instance on Amazon EC2, and as part of that downloaded the .pem file to allow me to SSH in.

When I tried to ssh with: 

ssh -i myfile.pem <public dns>

I got: 

@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@         WARNING: UNPROTECTED PRIVATE KEY FILE!          @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
Permissions 0644 for 'amazonec2.pem' are too open.
It is recommended that your private key files are NOT accessible by others.
This private key will be ignored.
bad permissions: ignore key: amazonec2.pem
Permission denied (publickey).

Following this post I tried to chmod +600 the pem file, but now when I ssh I just get: 

Permission denied (publickey).

What school-boy error am I making here? The .pem file is in my home folder (in osx). It's permissions look like this: 

-rw-------@   1 mattroberts  staff    1696 19 Nov 11:20 amazonec2.pem

The problem is having wrong mod on the file.

Easily solved by executing -

chmod 400 mykey.pem

Taken from Amazon's instructions -

Your key file must not be publicly viewable for SSH to work. Use this command if needed: chmod 400 mykey.pem

You are likely using the wrong username to login:

  • most Ubuntu images have a user ubuntu
  • Amazon's AMI is ec2-user
  • most Debian images have either root or admin

    • To login, you need to adjust your ssh command: 

    ssh -l USERNAME_HERE -i .ssh/yourkey.pem public-ec2-host

    HTH

    I know this is very late to the game ... but this always works for me:

    step 1 

    ssh-add ~/.ssh/KEY_PAIR_NAME.pem

    step 2, simply ssh in :) 

    ssh user_name@<instance public dns/ip>

    eg 

    ssh ec2-user@ec2-198-51-100-1.compute-1.amazonaws.com

    hope this helps someone.

    链接地址: http://www.djcxy.com/p/6642.html

    上一篇: 亚马逊邮件服务

    下一篇: 尝试SSH到Amazon Ec2实例中