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$> ssh aa-login
# or for users with no formal access to HPC service:
$> ssh ecs-login

From outside ECMWF, you may use Teleport through our gateway in Bologna, jump.ecmwf.int.

$> tsh login --proxy=jump.ecmwf.int
$> ssh -J user@jump.ecmwf.int user@aa-login
# or for users with no formal access to HPC service:
$> ssh -J user@jump.ecmwf.int user@ecs-login

For all the details of this connection method please see the Teleport documentation, where you will find how to best configure your SSH settings.

Note that direct access through ECACCESS service is not available.

See also HPC2020: Persistent interactive job with ecinteractive if you wish to customise the resource limits of your interactive session.

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If you are using Teleport, a chained ProxyJump could be configured as an interim measure. Below is a suggested entry which you need to place in your End User Device's ~/.ssh/config. It also includes the settings for X11 forwarding and to avoid your connections to drop after a period of inactivity. Note you must set your ECMWF username in the User option

Host a?-* a??-* ecs-login*
    User yourusername
    ForwardX11 yes
    ForwardX11Timeout 0
    ServerAliveInterval 60
    TCPKeepAlive yes
    # Temporary extra jump through ecgate until direct access is sorted
    ProxyJump shell.ecmwf.int,ecgate

Direct access from outside ECMWF through ECACCESS is not available. You must choose a valid host such as ecgate, and once there ssh into the desired host.

Password-less access from / to other platforms

If connecting from a different platform at ECMWF and to enable password-less connections and transfers between different platforms, you will need to enable ssh key authentication.

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