Posts tagged ssh
OpenSSH Certificate Authentication
- 11 April 2023
It is very convenient to allocate part of a node ore even a full node for interactive work on Levante. We describe how to do this in our main documentation.
If you always use a login node of Levante to log into the allocated node, then you won’t have any problems with host keys. However, if you use a login node as a jump host for loging into the allocated node from your local machine, then you may see a warning.
How do I log into the same login node I used before
- 24 January 2023
levante.dkrz.de maps to a whole group of nodes to distribute the load:
All login nodes share the same file system so most of the time you do
not have to care which node you are on. However, there are reasons why
you may want to connect to a specific node (for example, to reattach
to a running tmux session). You first have to find out
on which node you are. This may be indicated in your prompt or you can
also use hostname for this purpose:
How to prevent interuptions of ssh connections to DKRZ systems?
- 23 October 2019
If your ssh connections to login nodes are interrupted after short
periods without any keyboard activitiy and you get an error message
containing the string “broken pipe”, try to set the
ServerAliveInterval parameter appropriately.
On Linux and macOS systems with the OpenSSH implementation there is essentially two methods to adjust this client setting. First, it can be set as a command-line option to ssh: