Ugh, Too Many Passwords for alamode ssh Access

If you don't use Mines VPN software, then ssh(1) is your best bet:

  1. First, setup ~/.ssh/authorized_keys properly on your jumpbox.mines.edu account 

    remote$ scp ~/.ssh/id_rsa.pub MINESLOGIN@jumpbox.mines.edu:./remote.pub
remote$ ssh MINESLOGIN@jumpbox.mines.edu
:
:
jumpbox$ mkdir ~/.ssh
jumpbox$ chmod 700 ~/.ssh
jumpbox$ cat remote.pub >> ~/.ssh/authorized_keys
jumpbox$ chmod 700 ~/.ssh/authorized_keys

  2. Now you should be able to "bunny hop" through jumpbox to an alamode machine, if you don't have an authorized_keys setup on alamode yet, you are down to just one password... Test: 

    remote$ ssh -J jumpbox.mines.edu ctb60-13.mines.edu

  3. Now is the right time to setup some off-campus aliases in your remote machine to make life easier. Pick some alamode machine names (let's say you use ctb60-13, ctb60-19, and ctb60-07); everyone seems to have favorite remote login destinations, but for the life of me I don't know why... For each machine, add the following lines to your ~/.ssh/config file on your personal (remote) machine, adjusted of course for the machine names you've settled on. 

    # on campus alias
Host 13bb
HostName ctb60-13.mines.edu
User MINESLOGIN

# off campus sweetness
Host bb13
Hostname ctb60-13.mines.edu
ProxyJump jumpbox.mines.edu 
User MINESLOGIN

    Now, from remote which is off campus and not on the Mines VPN, you should be able to do 

    remote$ ssh bb13

    And connect directly to ctb60-13.mines.edu, but possibly with a password required.

  4. If you were asked for a password, then setup authorized_keys in a manner analogous to that on jumpbox (notice how I'm using the ssh just configured in the previous step): 

    remote$ scp ~/.ssh/id_rsa.pub bb13:./remote.pub
remote$ ssh bb13
:
:
ctb60-13$ mkdir ~/.ssh
ctb60-13$ chmod 700 ~/.ssh
ctb60-13$ cat remote.pub >> ~/.ssh/authorized_keys
ctb60-13$ chmod 700 ~/.ssh/authorized_keys

    Since your ${HOME} is shared across all alamode machines, you have to do this on just one alamode destination. Test! 

    remote$ ssh bb13 'hostname; echo Woot\!'
ctb60-13.mines.edu
Woot!
remote$

:) You're welcome.

Grrr, I can't see the PDFs generated by grader.sh

Use a PDF viewer installed on the alamode images. Some examples include gview or evince; but xpdf is by the far the fastest. 

$ xpdf output-1010.pdf

If you are ssh(1)ing into alamode, use the -X option. 

remote-with-vpn$ ssh -X ctb60-13.mines.edu
ctb60-13$ gview output-1010.pdf

This even works if you bunny hop through jumpbox 

remote$ ssh -J jumpbox.mines.edu -X ctb60-17.mines.edu
ctb60-17$ evince output-1010.pdf

Beware the VSCode IDE installed on alamode (Fall 2018)

The integrated terminal in the VSCode has been shown to be whacky when running Python code. If you choose to use this IDE, you are strongly advised to use a separate terminal window to test your SIM.