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EverLab Workshop, June 7-8, 2006, Jerusalem
Working with PlanetLab/EverLab
Danny Bickson
EverLab Workshop, June 7-8, 2006, Jerusalem
Lecture outline
• Working with ssh– Online/batch modes
• Copying file to/from an EverLab machine
• Running experiments
EverLab Workshop, June 7-8, 2006, Jerusalem
Connecting
• Connecting to an EverLab machine:
• ssh –l <username> <machine name>
• Disconnecting: exit
EverLab Workshop, June 7-8, 2006, Jerusalem
Executing a remote command
• ssh –l <slice name> <machine name> <command>
• Problem: passphrase is needed for each command!
EverLab Workshop, June 7-8, 2006, Jerusalem
Avoiding passphrase
>eval `ssh-agent`
>ssh-add
EverLab Workshop, June 7-8, 2006, Jerusalem
Debugging ssh
• Remote host public key has changed• Either the node was reinstalled or it is an attack
EverLab Workshop, June 7-8, 2006, Jerusalem
.ssh file structure
EverLab Workshop, June 7-8, 2006, Jerusalem
• Solution 1: edit known_hosts file
Remove old entry
EverLab Workshop, June 7-8, 2006, Jerusalem
• Solution 2: edit .ssh/config file:
• StrictHostKeyChecking – verifies other host public key in the known_hosts file
• BatchMode – answers affirmatively yes/no questions
EverLab Workshop, June 7-8, 2006, Jerusalem
Installing software
• Interactive mode
EverLab Workshop, June 7-8, 2006, Jerusalem
• You may also want:• yum –y install <module name>
– jdk (java)– gcc-c++ (c++), gcc-g77 (fortran)– make, gcc, binutils, tar, zip, ethereal, bison,
flex
• yum list "*ssh*" # lists packages that have "ssh" in the name
EverLab Workshop, June 7-8, 2006, Jerusalem
Installing software (2)
• Using ssh batch mode
• From a script use “ssh –n –t”
EverLab Workshop, June 7-8, 2006, Jerusalem
Copying files
• Using scp
EverLab Workshop, June 7-8, 2006, Jerusalem
Copying files (2)
• Using rsync
EverLab Workshop, June 7-8, 2006, Jerusalem
Running experiment• Stupid C++ program
• Makefile
• Compile
EverLab Workshop, June 7-8, 2006, Jerusalem
EverLab Workshop, June 7-8, 2006, Jerusalem
Running experiments
• Simple sh script
EverLab Workshop, June 7-8, 2006, Jerusalem
1) Edit config.sh file
EverLab Workshop, June 7-8, 2006, Jerusalem
2) Create a node file (list of all the machines that you like to deploy)
EverLab Workshop, June 7-8, 2006, Jerusalem
• Deploy your program
EverLab Workshop, June 7-8, 2006, Jerusalem
• Let’s verify the remote files:
EverLab Workshop, June 7-8, 2006, Jerusalem
Running your experiment
• <optional> In the config.sh file, set DEBUG=1 to get the output to the screen
EverLab Workshop, June 7-8, 2006, Jerusalem
• The result is directed to the log file
• Collect the results
EverLab Workshop, June 7-8, 2006, Jerusalem
EverLab Workshop, June 7-8, 2006, Jerusalem
Java example
EverLab Workshop, June 7-8, 2006, Jerusalem
EverLab Workshop, June 7-8, 2006, Jerusalem
EverLab Workshop, June 7-8, 2006, Jerusalem
• Run the java program
EverLab Workshop, June 7-8, 2006, Jerusalem
Advanced topics
• Using strace
EverLab Workshop, June 7-8, 2006, Jerusalem
Advanced options
EverLab Workshop, June 7-8, 2006, Jerusalem
More resources
More detailed document:
• http://www.cs.huji.ac.il/labs/danss/planetlab/PlanetlabProjectHowto.pdf
EverLab support:
EverLab Workshop, June 7-8, 2006, Jerusalem
THE END
• Thank you!
