Lab FAQ

Windows profile

Lab FAQ: Windows profile

Firefox displays a message 'underway' and is not released

Firefox displays a message ' running’ and is not released

This occurs when there is an abnormal circumstance and the profile of Firefox crashes. If you delete the file ' parent.lock’ the Firefox profile folder, You can reenter. However, a problem added the remote location sharing of files which makes Firefox not write correctly the location of the profile in the profiles.ini file exists in the installation of laboratories, so the parent.lock elimination is not enough to solve the problem.

The technicians have done a manual adjustment of shape now profile of Firefox is stored on route Z:\Firefox, which has been updated conveniently also in the profiles.ini file.

I've exceeded my quota, I can not work normally

I've exceeded my quota, I can not work normally.

The maximum size of the Windows profile is of 10GB (shared Linux account). If this limit is exceeded inadvertently, delete files by the user will not return to quota limits, Since the system at the next logon will return to restore those deleted files. You must put in contact with technicians of computer science of the school so that they enable again the profile.

It seems that the keyboard is in English, Although it is selected Spanish

It seems that the keyboard is in English, Although it is selected Spanish.

First, check the keyboard settings in Home->Contrlol Panel->Regional options...->Locale and language ->Language - the flip>Details button->Tab configuration->Default language box.

It should be set to Spanish (traditional literacy). If you were already with this configuration, You can try to change it to Spanish (International Literacy).

If the above has not solved the problem, It is very likely that your profile has been a corruption and must create again. This must be in contact with the school computing technicians. Previously it is advisable to copy the profile files that you wish to retain the Z unit: or to a USB device, Since the damaged profile will be deleted.

Print on Windows

Lab FAQ: Print on Windows

When printing in the Windows session, two printers will always be available, an identified as Reprography b & w and another as a Color reprography.

Both printers are physically located in the reprography of the building, that is where you must collect and pay impressions.

IMPORTANT: Jobs are not automatically printed. They remain in a queue until the student is physically moved to the reprographics and printing requests thereof. If you do not want to print what you were told there are two options: leave it in the queue (two days is deleted) passing by copying and indicate that it erased. NOTHING THAT IS NOT SUITABLE FOR PRINTED USER'S OWN

 

Steps for printing from an application on your Windows session

  1. Select ‘ print’ or ‘ Print ’, Depending on the application concerned.
  2. Select the desired printer, Reprography b & w for black and white prints and Reprography Color for color prints.
    • You can select various printing options. The expensive double option is available.

      The Color printer properties
      Black and white printer properties

  3. Once the job has been printed, will happen to be collected and paid by the reprography Centre. It is necessary to indicate the user name (login) of laboratories, so that the work of the user can be identified.
  4.  

  5. Prices are as follows (to day 10/2/2014):
    • Each copy in black and white: 0,03 €
    • Each copy in color: 0,25 €
    • If printed double-sided, the price per sheet will be the two copies.
    • Also supports carry the work in USB to reprography, instead of printing them from the laboratories. This option is recommended for printing special formats or very large files.

Printing in Linux

Lab FAQ: Printing in Linux

When printing at the Linux meeting, two printers will always be available, an identified as ImpresoraBN and another as a ImpresoraColor.

Both printers are physically located in the reprography of the building, that is where you must collect and pay impressions.

IMPORTANT: Jobs are not automatically printed. They remain in a queue until the student is physically moved to the reprographics and printing requests thereof. If you do not want to print what you were told there are two options: leave it in the queue (two days is deleted) passing by copying and indicate that it erased. NOTHING THAT IS NOT SUITABLE FOR PRINTED USER'S OWN

 

Steps for printing from an application on the Linux login

  1. Select ‘ print’ or ‘ Print ’, Depending on the application concerned.
    • For example, Okular is in the application in File->Print, in Firefox and in Acroread, in File->Print.
  2. Select the desired printer, impresoraBN for black and white prints e impresoraColor for color prints.
    • You can select various printing options. The expensive double option is available.

      ImpresoraBN properties in Acroread

      ImpresoraBN properties in OpenOffice

  3. Once the job has been printed, will happen to be collected and paid by the reprography Centre. It is necessary to indicate the user name (login) of laboratories, so that the work of the user can be identified.
  4. Prices are as follows (to day 10/2/2014):
    • Each copy in black and white: 0,03 €
    • Each copy in color: 0,25 €
    • If printed double-sided, the price per sheet will be the two copies.
    • Also supports carry the work in USB to reprography, instead of printing them from the laboratories. This option is recommended for printing special formats or very large files.

Transferring files to the account ETSII

Lab FAQ: Transfer files to the account of the school

From the laboratories of the school

Since installing the School laboratories can access the files of our account automatically once you've started in to any of the available operating systems.

From Windows, we can access common data drive Z: and the profile of Linux on the drive and:

From Linux, can access both shared data and the Windows profile in $ HOME / Windows.

 

From outside the laboratories of the school

For access to our data from outside the laboratories of the school, either at home, or anywhere else in the world, need to use the SFTP protocol to connect to the file server.

To do this, use any SFTP client and we will use the following data:

  • Host: Sanson.lab.inf.UVA.es
  • Protocol: SFTP
  • Port: 22
  • Remote Directory: /USER /

A good platform client for this purpose is the FileZilla. Once installed, the configuration is simple. The first, to open the progam, press the first button that is located below the menu bar.

filezilla1

Then, in the window that has opened, Server data fill, Port, Protocol, Access mode, Username and Password (put the user name and password for the account of the school), as shown in the following image.

filezilla2

Without closing the window Site Manager, go to the Advanced tab, and introduce the default remote directory / user /, so that in this way, to make the connection, automatically go to our data directory.

filezilla3

Finally. click on the OK Connect, and immediately see our remote directory (School server) and local disk.

filezilla4

Now we just have to drag files from your local computer to the remote or vice versa to Exchange files between your PC and the file of the school server.

It usamos in a separate ow Filezilla, is possible that the directory. linux appears we, so we have to enter the full path (/user / .linux) to access data from Linux.

In Linux, and for more advanced users, also can use SSHFS to mount point to the file server.

Personal web pages

Lab FAQ: Personal web pages

Websites students are housed in the web server of the school and will be accessible from the following address:

http://alumnos.inf.uva.es/user

Where user It is the personal user account login.

In order to upload content and post it on the web, Let the pages in the directory miweb within the user's profile. From Windows of the laboratories of the ETSII miweb folder is located in Z:\miweb and in Linux is located in $HOME/Windows/miweb

To access the contents of the folder in question out of the laboratories of the ETSII, You can visit the Lab FAQ: Transfer files to the account of the ETSII.

In addition to all web programming languages supported by the client-side, the web server supports PHP with some of the libraries most used.

Access to virtual machines

Lab FAQ: Access to virtual machine / Virtual lab

There are two ways to enter our virtual machine, Depending on the use that is going to give her. If you are a student/teacher access to the console and/or reinstallation of the virtual machine itself, you have access to the virtualization system, otherwise, you only have access via SSH and open ports previously requested depending on the type of laboratory practice. Students/teachers who have access to the virtualization system, also have access through SSH/ports specific to your virtual machine.

 

Access to system virtualization:

To access the virtualization system, We need to have a browser with Java support (latest version mandatory) and access the following URL:

https://consolas.inf.uva.es

Once accepted SSL security certificates, We will see a window like the following, which will have to fill with our username/password details. The students of the ETSII, must choose in “Domain” the LAB option, and professors the option “Proxmox VE authentication server”. Once this step, We will already be within the virtualization system.

pve-login

Once inside, We can see the availability of the cluster, but will only appear us a “+” on those servers where we have accessible virtual machines by our user.

pve-first

If you deploy the “+”, We will see that we have our machine available, which can perform various actions with her.

pve-vm

In the top right of the page, We have the following options:

  • Home: Starts the virtual machine (If not it is already).
  • Locking computer: If you have correctly installed ACPI support, the machine will turn off neatly.
  • Stop: Stops the virtual machine with a forced shutdown.
  • Reset: Restart the virtual machine.
  • Migration: This option only is available for system administrators.
  • Console: Opens a new window with the virtual machine console KVM, from which you can perform an installation or any needs requiring a presence in front of the machine.

 

SSH access to the virtual machine:

All virtual machines in the laboratories have by default the SSH port open, following a pattern that is explained below. It is possible that the machines have more open ports, but in that case, the teacher in charge of the virtual laboratory, students indicate those ports.

The port to gain access to our virtual machine is formed in the following way:

For example, we awarded the machine with ID 4501, the port would be:

virtual.lab.inf.UVA.es –> 4501L
virtual.lab.inf.UVA.es –> 45011

Where L is a number of 1 a. 9 services which may be of each virtual machine. By default, L = 1 is the SSH port.

 

Virtual laboratories network topology:

Although each student is assigned a hostname of different machine to gain access to your virtual machine, the truth is that in reality all the virtual machines from the Internet respond to the same IP (PASARELA.lab.inf.UVA.es), It is a server that does NAT to reach the VPN virtual machines. This is not necessarily so from inside the virtual machine, that being in the private network, they need to necessarily have a hostname and IP address different. In this way, we gain in security, not to waste public IPs and the student remember the ID of your virtual machine to see which port SSH access must, According to the explanation above.

A graph of the network topology scheme would be as follows:

topologia

WiFi: Eduroam