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Tip
Windows users should skip to our Guide for Windows SSH to ECMWF.

OpenSSH 7.3 or later has a simple command line option to connect via our gateway (shell.ecmwf.int) to the destination-host:

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Code Block

language	bash

Host ecgate
  User ab0
  ProxyJump ab0@shell.ecmwf.int

See the Legacy Configuration note below if your ssh client is older than 7.3.

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Linux VDI (both legacy OpenSUSE and CENTOS 8 beta)
Physical office workstations
ecGate
HPC2020 TEMS

To access any other host, the ProxyJump feature allows chaining by using a comma, like so:

Code Block

language	bash

ssh -J ab0@shell.ecmwf.int,ab0@workstation ab0@lxc

Configuring passwordless login

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Tip
We recommend using the Windows Subsystem for Linux if you can (on your own machine), followed by starting the SSH Agent and then connecting as for Linux/MacOS systems.

Alternatively, you can use:

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title	MobaXterm SSH from Windows 10 (ECMWF laptop)

Install MobaXterm if it is not already on your system
Download tsh (you may need to instruct antivirus software to ignore the file)
Start MobaXterm
Login using tsh (you will always need to specify the --proxy setting)
Use the following in $HOME/.ssh/config (MobaXterm's home):

Code Block

language	bash

Host ecgate
  User ab0
  ProxyCommand ssh -q -i c:/users/ab0/.tsh/keys/shell.ecmwf.int/firstname.lastname@ecmwf.int -W %h:%p ab0@shell.ecmwf.int
  IdentityFile c:/users/ab0/.tsh/keys/shell.ecmwf.int/firstname.lastname@ecmwf.int

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Expand

title	Native SSH from Windows 10 (own machine)

Start the Windows SSH Agent Service
Download tsh (you may need to instruct antivirus software to ignore the file)
Login using tsh (you will always need to specify the --proxy setting)
Use an SSH config as below:

Code Block

language	bash

# Windows currently has a bug, you need the full path to ssh or you will get:
# posix_spawn: No such file or directory

Host *.ecmwf.int
  User ab0
  ProxyCommand C:\Windows\System32\OpenSSH\ssh.exe -q -W %h:%p ab0@shell.ecmwf.int

# this assumes the SSH Agent is running, otherwise add:
# Host shell.ecmwf.int
#   IdentityFile ~/.tsh/keys/shell.ecmwf.int/firstname.lastname@ecmwf.int

Tip

The Windows 10 Terminal is a decent tabbed command line interface (albeit with no X11 support).

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title	New sessions can be configured following this example

Code Block

language	js

{
  "guid": "{717406b0-06cb-454c-a0c4-875267fa373d}", # run "[guid]::NewGuid()" in a PowerShell to generate this
  "name": "ecGate",
  "commandline": "ssh ab0@ecgate.ecmwf.int"
  "suppressApplicationTitle": true,
  "hidden": false,
  "fontSize": 10,
  "fontFace": "Fira Code",
  "cursorShape": "filledBox",
  "cursorColor": "#073642",
  "colorScheme": "Solarized Dark",
},

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Configuring passwordless login