Connection error when deploying with flightplan - node.js

Question

I am running this code with flightplan:
var plan = require('flightplan');
var appName = 'personal-website';
var username = 'deploy';
var startFile = 'bin/www';
var tmpDir = appName+'-' + new Date().getTime();
// configuration
plan.target('staging', [
{
host: '104.131.153.117',
username: username,
}
]);
plan.target('production', [
{
host: '104.131.153.117',
username: username,
},
//add in another server if you have more than one
// {
// host: '104.131.93.216',
// username: username,
// agent: process.env.SSH_AUTH_SOCK
// }
]);
// run commands on localhost
plan.local(function(local) {
local.log('Copy files to remote hosts');
var filesToCopy = local.exec('git ls-files', {silent: true});
// rsync files to all the destination's hosts
local.transfer(filesToCopy, '/tmp/' + tmpDir);
});
// run commands on remote hosts (destinations)
plan.remote(function(remote) {
remote.log('Move folder to root');
remote.sudo('cp -R /tmp/' + tmpDir + ' ~', {user: username});
remote.rm('-rf /tmp/' + tmpDir);
remote.log('Install dependencies');
remote.sudo('npm --production --prefix ~/' + tmpDir + ' install ~/' + tmpDir, {user: username});
remote.log('Reload application');
remote.sudo('ln -snf ~/' + tmpDir + ' ~/'+appName, {user: username});
remote.exec('forever stop ~/'+appName+'/'+startFile, {failsafe: true});
remote.exec('forever start ~/'+appName+'/'+startFile);
});
This is the error I get when I try to deploy:
Error connecting to 104.131.153.117: Error: Authentication failure. Available authentication methods: publickey,password
I have no idea what going on. I am trying to deploy this to digital ocean. I am not sure what is causing this problem.

Answer 1

It looks like you haven't authenticated to your remote host properly. You need to add your SSH key to the remote host for password-free access.
The command to do this is
$ ssh-copy-id <user>#<host>
If you need to specify an exact key to use, use the following command
$ ssh-copy-id -i <path-to-.pub-file> <user>#<host>