ECE Guacamole

Guacamole -- Screen Size Problem

There is a problem when reconnecting to existing sesions where the screen size becomes very small. I know about this problem and I'm working on fixing it. But until I figure it out, this is a work-around.

If your screen is not the proper size:

• Click on the "power button" in the upper righthand corner of the screen.
• Click on the "wrench" icon to bring up the settings menu.
• In the lefthand column, scroll down to "Devices" (you might need to scroll with your mouse wheel), and click "Devices"
• Click "Display".
• Click "Resolution", this brings up a selection list.
• Pick "1920 x 1080" from the list.
• In the upper righthand corner, click "Apply".
• Click "Keep Changes".

Guacamole -- Login Problem

If you are having trouble login into the Guacamole page, it is possible that your password has expired. Passwords are set to expire once a year. The guacamole login does not tell you that your password has expired, it just does not allow you to login!

To fix this, go here and login with your VT PID/password. Then Edit your account to change your password. There is an oddity with the "Edit" account where you must select your (one and only) account from the drop down list.

Please let me know if something is not working: john.ghra (at) vt.edu.

Guacamole -- A Web Browser Interface to the ECE Linux Machines

Guacamole provides a way of using the Linux machines without having to install any software, you just use your web browser.

• Works from anywhere, on campus or off.
  No needing to use VT's VPN.
• Connections don't die when you close your web browser.
• You can connect to several different computers at the same time and switch between them.
• You can leave long running processes running.
  For example you can start "matlab" then start run a long running script. Close your web browser/laptop. Come back tomorrow, reconnect and pick up where you left off.
• Simple file transfer.
• Connections are secure.
• The full documentation for using Guacamole is here.

What you need to know:

• To login you will use your ECE computer account. If you don't have one, go here and create one.
• When you are connected to a computer you can bring up the "Guacamole Menu" with <CTRL><SHIFT><ALT> key combination. This will allow you to do several things.
  • Disconnect from the current session and connect to a different computer.
  • Transfer files to/from the remote machine.

Problems and Bugs:

If you find something not working, please let me know: john.ghra (at) vt.edu. If you don't let me know of problems, I can't fix them!

Known problems and work arounds:

Connection fails with strange messages.

This seems to happen when several people try to connect at the same time. For now, just try to reconnect, it almost always works the second (or third) time.

Text is a little fuzzy / blurry to read.

Click the <CTRL><SHIFT><ALT> key combination. Scroll all the way to the bottom. Uncheck Automatically fit to browser window.

The initial connection to a machine takes a while.

Just be patient. When you reconnect to a machine, its pretty quick.

There is a copy&paste clipboard between your computer and the remote computer. This does not work for all combinations of (local computer, browser, remote computer).

I will try to post updates about this.

This type of connection is slow and laggy.

Yes. There is probably nothing I can do about that. If you want a more responsive interface, you will probably need to do a native X windows connection.

Pick machine:

• Pick a machine that is not too busy (Load Average).
• If you are trying to reconnect to a machine you used before but you've forgotten which one, look for your login (Logged In).

Machine Name	Load Average (lower is better)	Logged In
Compute Machine 01	0.60	abdullahzubair aghari19 akashdnyaneshwar batarseh cjearls gaurang1 jiayuan5 jkh jli4 Jubayer micsrf minux Mo7ammadJamal87 nagasanjana nanshan nithyaag norma7 oshears rdehart ryanreed sampanna sandeshrjain shagunjohari tjpegram viskim31 ynbella
Compute Machine 02	1.18	abdullahzubair akashdnyaneshwar alidemir gaurang1 jiayuan5 kalex mchris99 minux Mo7ammadJamal87 nanshan norma7 oshears ritwikdutta1995 shagunjohari tjpegram viskim31 xingye15
Compute Machine 03	0.16	akashdnyaneshwar alidemir cjearls ece4220 fariborzlp gaurang1 kchea17 keerthanab204 minux Mo7ammadJamal87 nithyaag ritwikdutta1995 ryanreed sampanna sidhaarthv tjpegram xingye15 yibin yifeil zhenghh zqing6
Compute Machine 04	0.17	athanas cjearls hezm keerthanab204 minux
Compute Machine 05	0.23	cjearls ece4220 ece4220source fariborzlp gaurang1 itiade17 minux neeravg nithyaag pkmandke viskim31 wjinhua6 xingye15 yijiashi zqing6
Compute Machine 06	0.27	adamle ece4220 fabiha27 jhonj4 jiayuan5 jli4 kchea17 minux nanshan pkmandke soysal varshasayee xingye15 yijiashi
Compute Machine 07	0.21	alidemir batdorff dbear1 gaurang1 jiayuan5 jli4 julietanderson junjiew8 minux mwz15 nap64 rdehart williamts
Compute Machine 08	1.82	cjearls fabiha27 gaurang1 hezm jiayuan5 jli4 jnaka66 minux sampanna stevens18 tjpegram xingye15 yijiashi
Compute Machine 09	0.30	aadi fabiha27 gaurang1 haoxiangliew hezm jiayuan5 jli4 jnaka66 keerthanab204 minux steve8
Compute Machine 10	0.21	adamle braedenm evanc42 gaurang1 jli4 junjiew8 minux nithyaag tjpegram williamts xingye15 zayeem
Compute Machine 11	0.33	adferr21 batdorff gaurang1 keerthanab204 michellefike minux nap64 nithyaag norma7 ryanreed schaum tjpegram xingye15
Compute Machine 12	0.29	afaris athanas cjearls ece4220 fabiha27 gaurang1 hannak16 hezm minux nap64 tjpegram wjinhua6 yijiashi zqing6
Compute Machine 13	0.13	cjearls fabiha27 jkh Jubayer keerthanab204 minux ryanreed williamts
Compute Machine 14	0.32	adferr21 braedenm cjearls davida18 gaurang1 hezm keerthanab204 minux nanshan nap64
Compute Machine 15	0.29	alidemir athanas cjearls davida18 fabiha27 gaurang1 hezm jhonj4 jkh keerthanab204 minux rdehart ronnoc ryanreed sefatece williamts
Workstation 1	DOWN
Workstation 2	DOWN
Workstation 3	DOWN
Workstation 5	DOWN
Workstation 6	DOWN
Large Memory Machine	2.20	jkh kangjun keerthanab204 micsrf ryanreed sampanna shagunjohari tjpegram zhenghh
MPI Head Node (48 node cluster)	0.15	jkh Jubayer keerthanab204 ldurbeck Mo7ammadJamal87 ryanreed sacrain

Great! Let's get going!

• Remember to use your ECE computer account to login, just click here.