SshCommandLine < HPC

---+ SSH configuration for Mac and Linux

# goto your homedirectory
<verbatim>cd</verbatim>

# create a .ssh directory
<verbatim>mkdir .ssh</verbatim>

# goto .ssh directory
<verbatim>cd ~/.ssh</verbatim>

# create a ssh keypair
<verbatim>ssh-keygen -t rsa -C HPC -f id_rsa_hpc</verbatim>

# enter 2 times a secret word called "passphrase" <br />
# Put this passphrase in a "digital safe" ( p.e. *<noautolink>KeepAss</noautolink>* see: https://keepass.info/ )  because you need this later on.

# now you created 2 files like this

-rw------- 1 wvanburen users 1766 Mar 27 11:47 id_rsa_hpc<br />
-rw-r--r-- 1 wvanburen users  385 Mar 27 11:47 id_rsa_hpc.pub<br />

# copy and paste the content of the public-key named id_rsa_hpc.pub <br/>
# and mail this to hpc-systems@lists.umcutrecht.nl<br/>
# After the admins configured your public key on the gateway you can try to login into the hpc gateway by<br/>

<verbatim>ssh -i ~/.ssh/id_rsa_hpc -l wvanburen hpcgw.op.umcutrecht.nl</verbatim>
(Give only once a Yes to add the serverkey to your know_hosts file in your .ssh directory)

and enter your selfmade passphrase.<br/>
Once you entered the gateway you can continue to log in into the HPC by:

<verbatim>ssh hpcs03</verbatim>
or
<verbatim>ssh hpcs04</verbatim>
and answer with your HPC-password
And you are on the HPC now

You can automate this procedure to create a ssh-config files called "config" in your .ssh directory.<br/>
This is an example. <br/>
Copy and save this file in the .ssh directory and call it config.

<verbatim>
#############################################
# file : ~/.ssh/config
# date : 20200327
# expl : default ssh config file example 
#############################################

# usage : ssh hpcgw
Host hpcgw
  HostName hpcgw.op.umcutrecht.nl
  User wvanburen
  Protocol 2
  Port 22
  IdentityFile ~/.ssh/id_rsa_hpc

# usage : ssh gw2hpcs03
Host gw2hpcs03
  HostName hpcs03.op.umcutrecht.nl
  User wvanburen 
  Port 22
  Protocol 2
  ProxyCommand ssh -i ~/.ssh/id_rsa_hpc -l wvanburen hpcgw.op.umcutrecht.nl nc %h %p 2>/dev/null

# usage : ssh gw2hpcs03X
Host gw2hpcs03
  HostName hpcs03.op.umcutrecht.nl
  User wvanburen 
  Port 22
  Protocol 2
  ForwardX11 yes
  ProxyCommand ssh -X -i ~/.ssh/id_rsa_hpc -l wvanburen hpcgw.op.umcutrecht.nl nc %h %p 2>/dev/null

# usage : ssh gw2hpcs04
Host gw2hpcs04
  HostName hpcs04.op.umcutrecht.nl
  User wvanburen 
  Port 22
  Protocol 2
  ProxyCommand ssh -i ~/.ssh/id_rsa_hpc -l wvanburen hpcgw.op.umcutrecht.nl nc %h %p 2>/dev/null

# usage : ssh gw2hpcs04X
Host gw2hpcs04
  HostName hpcs04.op.umcutrecht.nl
  User wvanburen 
  Port 22
  Protocol 2
  ForwardX11 yes
  ProxyCommand ssh -X -i ~/.ssh/id_rsa_hpc -l wvanburen hpcgw.op.umcutrecht.nl nc %h %p 2>/dev/null

# usage : ssh gw2hpct01
Host gw2hpct01
  HostName hpct01.op.umcutrecht.nl
  User wvanburen 
  Port 22
  Protocol 2
  ProxyCommand ssh -i ~/.ssh/id_rsa_hpc -l wvanburen hpcgw.op.umcutrecht.nl nc %h %p 2>/dev/null

# usage : ssh gw2hpct02
Host gw2hpct02
  HostName hpct02.op.umcutrecht.nl
  User wvanburen 
  Port 22
  Protocol 2
  ProxyCommand ssh -i ~/.ssh/id_rsa_hpc -l wvanburen hpcgw.op.umcutrecht.nl nc %h %p 2>/dev/null

# usage : ssh hpcs03
Host hpcs03
  HostName hpcs03.op.umcutrecht.nl
  User wvanburen 
  Port 22
  Protocol 2

# usage : ssh hpcs03X
Host hpcs03X
  HostName hpcs03.op.umcutrecht.nl
  User wvanburen 
  Port 22
  ForwardX11 yes

# usage : ssh hpcs04
Host hpcs04
  HostName hpcs04.op.umcutrecht.nl
  User wvanburen 
  Port 22
  Protocol 2

# usage : ssh hpcs04X
Host hpcs04X
  HostName hpcs04.op.umcutrecht.nl
  User wvanburen 
  Port 22
  Protocol 2
  ForwardX11 yes

# usage : ssh hpct01
Host hpct01
  HostName hpct01.op.umcutrecht.nl
  User wvanburen 
  Port 22
  Protocol 2

# usage : ssh hpct02
Host hpct02
  HostName hpct02.op.umcutrecht.nl
  User wvanburen 
  Port 22
  Protocol 2

# usage : ssh ft_gw2hpct01
#         then start a filezilla session on localhost
# for filetransfer from hpct01 to local machine
Host ft_gw2hpct01
  HostName hpct01.op.umcutrecht.nl
  User wvanburen 
  Protocol 2
  ProxyCommand ssh -X -i ~/.ssh/id_rsa_hpc -L 8888:hpct01.op.umcutrecht.nl:22 -l wvanburen hpcgw.op.umcutrecht.nl nc %h %p 2>/dev/null

# usage : ssh ft_gw2hpct02
#         then start a filezilla session on localhost
# for filetransfer from hpct01 to local machine
Host ft_gw2hpct02
  HostName hpct02.op.umcutrecht.nl
  User wvanburen 
  Protocol 2
  ProxyCommand ssh -X -i ~/.ssh/id_rsa_hpc -L 8888:hpct02.op.umcutrecht.nl:22 -l wvanburen hpcgw.op.umcutrecht.nl nc %h %p 2>/dev/null
#########################################</verbatim>

With this oneliner you can replace *wvanburen* in your own *username* int the file *"~/.ssh/config"*

<verbatim>sed -i 's/wvanburen/my_username/' ~/.ssh/config </verbatim>

Try
<verbatim>ssh gw2hpcs04 </verbatim>

It will ask for your passphrase on the gateway _hpcgw_
followed by your hpc-password  on _hpcs04_ .



-- %USERSIG{ReneJanssen - 2020-03-27}%
This topic: HPC > WebHome > FirstTimeUsers > SshCommandLine
Topic revision: r2 - 2020-03-27 - ReneJanssen