Tips

If you have any useful tips for using the ImPhys servers please contact the sysadmin or submit your suggestions via the repository of this document:

• https://gitlab.tudelft.nl/imphys/hpc

You can then either create a merge request or create an issue.

Monitoring

A Grafana instance is currently setup to monitor the current resource usage. If you encounter high load on your server of choice, the grafana instance may be used to identify servers on which the load is currently low. The Grafana instance is available at https://pluto-imphys.tnw.tudelft.nl.

Keychain

Keychain will help you maintaining your SSH-keys and using them automagically. This package is installed on both servers.

Quick start for bash-shell:

1. identify or create the SSH-keys you want to use on your command line

2. add the following line with the filenames of the private keys to your bash startup file ~/.bashrc, for example:

   ~/.bashrc

   eval "$(keychain --eval $HOME/.ssh/gitlab $HOME/.ssh/id_ed25519)"
   

3. next time you login keychain will check if a SSH-agent is already running and if the required SSH-keys are available. If needed you will be asked for a SSH-key unlock password

For more information:

• https://www.cyberciti.biz/faq/ssh-passwordless-login-with-keychain-for-scripts/