connect to host localhost port 22: Connection refused

Question

If install Hadoop on Mac OSX, make sure turn on Remote Login under System Preferences then File Sharing. This worked on my machine.

1. Remove SSH with the following command:

   sudo apt-get remove openssh-client openssh-server
   

2. Install SSH again with:

   sudo apt-get install openssh-client openssh-server
   

It will solve your problem.

Do you have sshd installed? You can verify that with:

which ssh
which sshd

For detailed information you can visit this link.

Try installing whole SSH package pack:

sudo apt-get install ssh

I had ssh command on my Ubuntu but got the error as you have. After full installation all was resolved.

I use a Mac, this worked for me:

Open System Preferences, then search for 'sharing'.

Choose Remote Login, make sure it is on and remember to add required users.

Got it from here

I did all the suggestion above and it did not work. Then I restart the ssh service and it works. This is what I do:

service ssh restart

Then I redo

ssh localhost

Now I can connect to my localhost. Hope it helps

Check if this port is open. Maybe your SSH demon is not running. See if sshd is running. If not, then start it.