X2go macos xquartz password#

X2go macos xquartz password#

You will be asked to provide your ALICE user password twice (not your ULCN or LUMC password), once for the ssh gateway and once of the login node. If you completed the above steps you should be able to login to one of the login nodes by simply typing this: You can even set your ssh connection to automatic X11 forwarding by adding the following setting: SSH tunneling for older versions of OpenSSHĪlternatively, if your OpenSSH server isn't that recent (version 7.2 or earlier) and doesn't recognize the ProxyJump alias, try this: So add the tunnel commands, for instance, to one host like:

Do not add tunnels to all definitions as they may produce conflicts when you use the same tunnel twice. If you want to look at the monitoring tools that are running on the management node too, you could add additional tunnelling commands to the config for a specific host. In your Linux system open ~/.ssh/config in your favourite text editor (or create the file if it does not exist). You can find out the version of OpenSSH by typing ssh -V in your terminal. If you have an older version of OpenSSH please have a look at SSH tunneling for older versions of OpenSSH. We will use a feature called ProxyJump in OpenSSH which is available in OpenSSH versions 7.3 and higher. Here, we describe how you can configure your ssh connection to connect to ALICE in the easiest possible way. If you do not remember your password, please contact the ALICE Helpdesk. You will have to wait until the hour has passed before you can try to login again. If you enter the wrong login credentials three times, the IP that you used to connect to the gateway will be blocked for one hour. Important: For security reasons, the gateway allows only three consecutive login attempts from the current IP. You can only use to tunnel through to the actual login nodes. Login to ALICE from Linux SSH Gateway and login nodesĪLICE has its own ssh gateway which you have to go through first. MKL is an exception to that if it is relevant to you. Running multiple threads per core is generally not productive.

I/O activity can slow the login node for everyone, like multiple copies or 'ls -l' on directories with 000's of files.

That script you run to monitor job status several times a second should probably run every few minutes.

For example 'make -j 14' will use half of the cores.

While it is fine to compile on a login node, avoid using all of the resources.

Don't launch too many simultaneous processes.Use an interactive session if running a job is not appropriate. Avoid computationally intensive activity on the login nodes.Appropriate activities on the login nodes:.Note that the ssh gateway host itself is a secure portal from the outside and serves no compute function. This will tell you the name of the login node that you are currently on. You can use your Linux prompt or the command hostname. 2.3.1 Password-less login using SSH keys.2.2.2 SSH tunneling for older versions of OpenSSH.