CODEWITHSUNDEEP
linuxsshssh-keys
ZK Zhao
ZK Zhao

Reputation: 21573

How to add a ssh key to remote server?

In my VPS, run ssh-add -l and it returns: The agent has no identities. but I have run cat ~/.ssh/id_rsa.pub | ssh user@hostname 'cat >> .ssh/authorized_keys' previously

I then run ssh-add ~/.ssh/authorized_keys it returns @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @ WARNING: UNPROTECTED PRIVATE KEY FILE! @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ Permissions 0644 for '/home/deployer/.ssh/authorized_keys' are too open. It is recommended that your private key files are NOT accessible by others. This private key will be ignored.

and ssh [email protected] still get report Permission denied (publickey).

Upvotes: 20

Views: 55320

Answers (3)

Sascha
Sascha

Reputation: 1041

The currently most up voted answer is plainly wrong as it fails to understand the question. OP is asking how to authorize a key on a remote server, not how to add a key to your local ssh-agent.

To add a key to a remote server use the ssh-copy-id command from your local PC:

ssh-copy-id -f -i path/to/key.pub username@remoteHost

This adds the public key located at path/to/key.pub with the correct permission to the server at remoteHost using username as login name.

Upvotes: 57

EvilKittenLord
EvilKittenLord

Reputation: 912

You can also use pssh utility (Paralell SSH Tools, see Github repo).

Create a file with all the hostnames you want to add, then run:

pssh -h [hostsfile] -P 'echo "sshkeystringBLARG etc..." >> /home/[user]/.ssh/authorized_keys'

You can modify the command accordingly.

Upvotes: -5

deagh
deagh

Reputation: 2732

To add your ssh-key to your ssh-agent you have to add it with:

ssh-add

After that ensure your key is added:

ssh-add -l

To fix your permission problem try:

chmod 0600 ~/.ssh/authorized_keys

Upvotes: 4

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