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You can connect for the first time via SSH from another ECMWF platform. If you do so from ECGATE or the Cray HPCF you will not need a password to log in.

$> ssh hpc-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@hpc-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.

Upon logging in, please take a look at the message of the day displayed on the login nodes (or review /etc/motd). 

Password access

If you have not changed your password since 18 January 2021, password access may not work.

List of main entry points

You can use the hpc-* or hpc2020-* names in the table below if you just need to use the default HPCF complex, or the specific names for each of the complexes. For ECS, you may use the ecs-* names. Your usual interface to connect would be the *-login names, and for remote submission of jobs we would recommend using the *-batch names as they are dedicated login nodes for job submissions. If you need to set up a cronjob, then the *-cron names are to be used.


Generic namesPer-complex
HPCF Interactive Login

hpc-login

hpc2020-login

aa-login

ab-login

ac-login

ad-login

ECS Interactive Loginecs-loginecs-login
HPCF Remote batch job submission

hpc-batch

hpc2020-batch

aa-batch

ab-batch

ac-batch

ad-batch

ecs-batch

ECS Remote batch job submissionecs-batchecs-batch
HPCF Cron jobs

hpc-cron

hpc2020-cron

-
ECS Cron jobsecs-cron-

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.

  1. Check if you have an existing ssh key pair on other ECMWF platforms:

    $> ls ~/.ssh/id_*
~/.ssh/id_rsa    ~/.ssh/id_rsa.pub

    If you don't, you may generate them like so:

    $> ssh-keygen                         # press 'enter' 3 more times

  2. Make sure it is added into the different platforms to be used

    If the key was already present in the ~/.ssh/authorized_keys file, it will be duplicated.

    $> ssh-copy-id -i ~/.ssh/id_rsa.pub ecgate  # also gives access to lxc and linux workstation
$> ssh-copy-id -i ~/.ssh/id_rsa.pub cca
$> ssh-copy-id -i ~/.ssh/id_rsa.pub hpc-login
# or for users with no formal access to HPC service:
$> ssh-copy-id -i ~/.ssh/id_rsa.pub ecs-login

  3. Copy your key pair onto those platforms so you can make the connections in both directions:

    $> rsync -av ~/.ssh/id_rsa* cca:.ssh/
$> rsync -av ~/.ssh/id_rsa* hpc-login:.ssh/
# or for users with no formal access to HPC service:
$> rsync -av ~/.ssh/id_rsa* ecs-login:.ssh/


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