WP4: Infrastructure
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Setup Access to Infrastructure

 

This step is required to get access either to the HMI files stored in France or the properties extracted by our algorithms.

If you want to do all processing on your local machine, you can skip this step.

In order to access the FLARECAST development infrastructure in France you need a dedicated account.

To get an account send a message to Eric Buchlin <eric.buchlin@ias.u-psud.fr>.

 

With this account you can connect to the computing infrastructure. The following figure outlines how this connection is being established.

How to access the computing infrastructure in Meudon

 

Within this process you will be asked twice to enter your credentials. If you want to avoid this you can generate and install an SSH certificate as follows:

Create RSA key
# Open terminal on your machine
local> ssh-keygen -t rsa -C "your-mail-address"                        # -C is just a comment
Enter file in which to save the key (/Users/mercuron/.ssh/id_rsa):     # use default
Enter passphrase (empty for no passphrase):                            # protect your private key
Enter same passphrase again:                                           # protect your private key
...
Your public key has been saved in ~/.ssh/id_rsa.pub.
...
local> scp ~/.ssh/id_rsa.pub username@ias-ssh.ias.u-psud.fr:~/.ssh/authorized_keys
Create RSA key from login host to cluster-head
local> ssh username@ias-ssh.ias.u-psud.fr
inf-ssh2> ssh-keygen -t rsa -C "your-mail-address"         # -C is just a comment
# use default settings and no password
inf-ssh2> scp ~/.ssh/id_rsa.pub username@cluster-head:~/.ssh/authorized_keys 
inf-ssh2> ssh username@cluster-head                        # to test the connection
cluster-head> exit
inf-ssh2> exit
local>
Configure auto forwarding
# create file .ssh/config to auto-forward yourself to cluster-head
local> nano .ssh/config
# content of .ssh/config
Host flarecast-infra
 ProxyCommand ssh username@ias-ssh.ias.u-psud.fr nc cluster-head.ias.u-psud.fr 22
 User username
 ForwardX11Trusted yes
 ServerAliveInterval 60 

# Ctrl-x y <return> to save and close 

local> ssh flarecast-infra
# accept fingerprint
# enter FLARECAST cluster password
# you can ignore message: /usr/bin/xauth:  file ~/.Xauthority does not exist
cluster-head> exit
local>

From now on you can login to the cluster as follows

Login to cluster
local> ssh flarecast-infra
# enter FLARECAST cluster password
cluster-head> exit
local>

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