Keep SSH Connected

There is always one issue that bothers me when using SSH to access server (e.g. EC2) which is that the ssh connection can disconnect very soon. I tried to make changes in the local ssh config: ~/.ssh/config

Host remotehost
	HostName remotehost.com
	ServerAliveInterval 50
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Then do a permission change

chmod 600 ~/.ssh/config
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However, this doesn’t work for me on Mac, and I don’t know why. :(

Then I tried to make changes on server side. In /etc/ssh/sshd_config, add or uncomment the following lines:

ClientAliveInterval 50
ClientAliveCountMax 10
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Then restart or reload SSH server to help it recognize the configuration change

sudo service ssh restart  # for ubuntu linux
sudo service sshd restart  # for other linux dist
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Finally, log out and try to login again

logout
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This time it works! :)

Adding SSH Public Key to Server

Adding ssh public key to server sometimes can make the connections eaiser. The command is simple:

cat ~/.ssh/id_ras.pub | ssh -i "my-keypair.pem"  ubuntu@myserver 'cat >> ~/.ssh/authorized_keys'
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