Configure ssh to connect to a server
By DevOps on Wed 01 May 2019in
This article describes how to configure ssh to connect to a server using an ssh key for access. Using ssh keys is more secure than passwords, and makes it easier to automate systems using tools like Ansible.
First, create an ssh key, if you don't have one already.
Configure your ssh config file
If your server only has an IP address, you can make a host alias to make it
easier to use. Create a file on your local machine called
the server to it:
Host web-server HostName 126.96.36.199
The ssh config file supports a lot more options. For example, you can specify the userid to use on the remote server, the port, or the key.
Set the file permissions on
chmod 600 ~/.ssh/config
ssh is picky about file permissions. For security, the files and directories need to only be readable by you, and ssh will refuse to work if they are wrong.
Test it by connecting to the server:
If it doesn't work, run ssh with
-v flags to see what the problem is. You
can add more verbosity, e.g.
-vvvv if you need more detail.
ssh -vv user@web-server
chown $USER:staff ~/.ssh chmod 700 ~/.ssh chown $USER:staff ~/.ssh/id_rsa chmod 600 ~/.ssh/id_rsa