The Gilda User Interface

1
The Gilda User Interface

• Discipline Grid Computing, 07/08-2
• Practical classes
• Inês Dutra, DCC/FCUP

2
Outline

• What is a User Interface (UI)?
• Installing the User Interface
• Testing the User Interface

3
What is a UI?

• The UI is a suite of clients and API that users
  and applications can use to access the gLite
  services.
• The gLite UI includes the following components
• VOMS command-line tools
• Workload Management System clients and APIs
• Logging and Bookkeeping clients and APIs
• Data Transfer command-line clients and APIs
• Data Catalog command-line clients and APIs
• gLite I/O client and APIs
• R-GMA client and APIs

4
Installing the User Interface

• ATTENTION you do not need to go through these
  steps for our practical classes!!
• These steps are only useful if you want to
  install the UI on your own machine.
• For this discipline, we installed the virtual
  user interface that can be found at
• https//gilda.ct.infn.it/VirtualServices.html
• (GILDA VM UI gLite 3.0 (Readme))
• Before installing the virtual UI, we need to
  install VMWare Player that can be found at
• http//www.vmware.com/products/player/

5
UI installation and configuration

• After installing vmware player, you need to
  unpack the Gilda UI distribution and load the
  file with extension wmx to your vmware player.
• You may need to follow the steps at
• https//grid.ct.infn.it/twiki/bin/view/GILDA/NtpCo
  nf
• To configure the ntp service (synchronisation)
• You need to be root to be able to follow these
  steps (root passwd gildaadm)

6
Configurationthese steps can be found at
https//grid.ct.infn.it/twiki/bin/view/GILDA/NtpCo
nf

• Install ntp if not already available for your
  system
• apt-get install ntp
• Add your time server in /etc/ntp.conf
• restrict 193.206.144.10 mask 255.255.255.255
  nomodify notrap noquery
• server ntp-1.infn.it
• Edit /etc/ntp/step-tickers adding your(s) time
  server(s) hostname
• If you are running a firewall, you will have to
  allow inbound communication on the NTP port
• -A INPUT -s ltNTP-serverIP-1gt -p udp --dport 123
  -j ACCEPT
• Activate the ntpd service with the following
  commands
• ntpdate cronos.cenam.mx
• service ntpd start
• chkconfig ntpd on
• You can check ntpds status with
• ntpq -p

7
Configuration

• Add LFC settings (this is important to point to
  the right BDII)
• export LCG_GFAL_INFOSYSglite-rb.ct.infn.it2170

8
Testing the User Interface
9

• Login to the virtual gilda user interface
• ssh gildauserxx_at_192.168.0.6
• Passwd xx (where xx 00, 01, 02, ..., 19)
• Create .globus directory
• mkdir .globus
• Copy your own certificates to the UI in directory
  .globus
• Verify and, if needed, change permissions of the
  certificates
• chmod 400 userkey.pem
• chmod 644 usercert.pem