Like a fool, I upgraded my Ubuntu 18.04 machine to 18.10 over the
weekend because I needed a new LaTeX package and was too lazy to use
tlmgr. On Monday morning, I did my usual
make launch and found eight
tmux windows reporting a similar message:
==> core: Waiting for machine to boot. This may take a few minutes... core: SSH address: 127.0.0.1:2222 core: SSH username: vagrant core: SSH auth method: private key core: Warning: Connection reset. Retrying... core: Warning: Authentication failure. Retrying... core: Warning: Authentication failure. Retrying... : : ... core: Warning: Authentication failure. Retrying...
I don’t know if it’s because I haven’t restarted my computer in a month or two and I’d been hiding the problem, or if it was an unrelated update, but oh well.
After much grumbling, I figured out the problem and its trivial
solution. Notice how it says
SSH username: vagrant above? It turns out
that the Ubuntu-packaged box I’m using configured its username to
config.ssh.username in your Vagrantfile and be done!
Better yet, provision a new box that doesn’t have this same issue.
How do you find out the default credentials?
- Note which box your
Vagrantfileuses. Mine is
- Figure out which version of that box your machine is running with
some sloppy shell programming. This is really only needed if you have
multiple versions like me. The VM’s name in question is
core, so substitute whatever yours is below:
python -mjson.tool < ~/.vagrant.d/data/machine-index/index | grep core -A15 | grep version "version": "20171208.0.0"
- Armed with the version, figure out the username and password for the box:
grep ssh ~/.vagrant.d/boxes/ubuntu-VAGRANTSLASH-xenial64/20171208.0.0/virtualbox/Vagrantfile config.ssh.username = "ubuntu" config.ssh.password = "some_password"
How do you set the credentials?
- Update your
Vagrant.configure("2") do |config| config.vm.box = "ubuntu/xenial64" # ... config.ssh.username = "ubuntu" # optional, if you want to bypass logging in with a private key # config.ssh.password = "some_password" # ... end
- Restart your Vagrant box:
vagrant reload core && vagrant ssh core
- Rejoice in your time lost to stupid computers. Get back to work.