How to run VM in MetaCentrum cloud and set access from Windows using Putty

1.registration to MetaCentrum cloud

generate private SSH key
- login to, e.g., skirit (skirit.ics.muni.cz) using SSH
- run command ‘ssh-keygen’ and enter file name for the key and set passphrase to access it – this password is optional, it is not a MetaCentrum password
- there are two new files in the folder ~/.ssh/
- open the file with the suffix *.pub (public key), e.g., using ‘less name.pub’
- copy the entire content of the file to clipboard, i.e., select with a mouse and ctrl+A
fill the application for the metacloud group
- https://perun.metacentrum.cz/fed/registrar/?vo=meta&group=metacloud
- login with CAS password
- paste public key from the clipboard (ctrl+V)

2.run VM in MetaCloud

login to https://cloud.metacentrum.cz/ using MetaCentrum credentials
click on the green icon with ‘+’
select a desired image, e.g., CERIT-SC CentOS7
set parameters (RAM, CPU, VCPU, disk, network)
click on Create
VM is starting and information about IP address are shown, copy public IP (starts with 147) to the clipboard

3.conversion of the private key (for using with Putty)

copy private key from MetaCentrum to the local computer (i.e., the file without *.pub suffix)
open puttygen.exe (downloaded from http://www.chiark.greenend.org.uk/~sgtatham/putty/latest.html)
Conversions -> Import key (select file with the private key)
click on Save private key and save the key in Putty format with the suffix *.ppk

4.set access with Putty

open Putty
under Category ‘Session’ paste IP address of VM to Host Name IP (from clipboard)
under Category ‘Connection – SSH – Auth’ select Private key generated in the step 3
under Category ‘Connection – SSH – Auth – GSSAPI’ deselect ‘Attempt GSSAPI authentication’
under Category ‘Session’ name this connection in ‘Saved Sessions’ and click on Save
connect by clicking on Open
for next time login just click on the name of the connection, Load and Open
login as: root
passphrase for key: passphrase from the step 1

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