SSH Access: Difference between revisions
IA migration §2: polish — trim Windows/PuTTY walkthrough, move worker-node section to Compute Nodes, fix links (via update-page on MediaWiki MCP Server) |
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This page explains how to connect to Anunna over SSH. Once you are logged in, see [[Login Nodes]] for what the login nodes are for, and [[Policies and Terms of Use]] for the rules that apply. | |||
== Connecting == | |||
You log in to Anunna using the Secure Shell protocol (SSH) on the default port (TCP 22). The address of the login server is: | |||
login.anunna.wur.nl | |||
You are automatically redirected to a currently valid login server. An SSH client is built in on Linux and macOS; on Windows you usually install one, such as [http://www.chiark.greenend.org.uk/~sgtatham/putty/ PuTTY] or MobaXTerm. | |||
For | Note that access may be restricted to certain IP ranges, and SSH may be blocked where port 22 is closed by a firewall. (For example, WUR FB-IT does not allow port 22 over WiFi to certain systems.) | ||
'''The login server is an access point only — it is not for CPU- or memory-intensive work.''' Anything beyond light, interactive use belongs in a job; see [[Login Nodes]] and [[Scheduler Overview (Slurm)]]. | |||
== | === Linux and macOS === | ||
An SSH client is available from any Linux or macOS terminal: | |||
<syntaxhighlight lang="bash"> | |||
ssh <username>@login.anunna.wur.nl | |||
</syntaxhighlight> | |||
If the connection is refused, check your firewall settings — SSH needs port 22 open. | |||
=== Windows === | |||
On Windows you connect with an SSH client such as '''MobaXTerm''' or '''PuTTY'''. In either case, set the remote host to <code>login.anunna.wur.nl</code> and enter your username (not your email address) and WUR password. No characters appear while you type your password — this is normal. | |||
For key-based login, generate an SSH key pair with the client's key generator (MobaKeygen in MobaXTerm, or PuTTYgen for PuTTY), protect it with a passphrase, and add the public key to <code>~/.ssh/authorized_keys</code> on Anunna. PuTTY users can hold the key in Pageant so they do not have to type the passphrase each time. See the [http://www.chiark.greenend.org.uk/~sgtatham/putty/ PuTTY homepage] for full instructions. | |||
== Logging in without a password == | |||
You can configure SSH to log in without typing your password each time; see [[ssh_without_password|SSH without password]]. | |||
== Connecting to a compute node == | |||
To open a shell or a direct connection on a compute node where your job is running, see [[Compute Nodes]]. | |||
== See also == | == See also == | ||
* [[ | * [[Login Nodes]] | ||
* [[Compute Nodes]] | |||
* [[Data Transfer Methods]] | |||
* [[ssh_without_password|SSH without password]] | |||
* [[Scheduler Overview (Slurm)]] | |||
== External links == | == External links == | ||
* [http://en.wikipedia.org/wiki/Secure_Shell Secure Shell on Wikipedia] | |||
* [http://www.chiark.greenend.org.uk/~sgtatham/putty/ PuTTY homepage] | |||
Latest revision as of 12:20, 18 June 2026
This page explains how to connect to Anunna over SSH. Once you are logged in, see Login Nodes for what the login nodes are for, and Policies and Terms of Use for the rules that apply.
Connecting
You log in to Anunna using the Secure Shell protocol (SSH) on the default port (TCP 22). The address of the login server is:
login.anunna.wur.nl
You are automatically redirected to a currently valid login server. An SSH client is built in on Linux and macOS; on Windows you usually install one, such as PuTTY or MobaXTerm.
Note that access may be restricted to certain IP ranges, and SSH may be blocked where port 22 is closed by a firewall. (For example, WUR FB-IT does not allow port 22 over WiFi to certain systems.)
The login server is an access point only — it is not for CPU- or memory-intensive work. Anything beyond light, interactive use belongs in a job; see Login Nodes and Scheduler Overview (Slurm).
Linux and macOS
An SSH client is available from any Linux or macOS terminal:
ssh <username>@login.anunna.wur.nl
If the connection is refused, check your firewall settings — SSH needs port 22 open.
Windows
On Windows you connect with an SSH client such as MobaXTerm or PuTTY. In either case, set the remote host to login.anunna.wur.nl and enter your username (not your email address) and WUR password. No characters appear while you type your password — this is normal.
For key-based login, generate an SSH key pair with the client's key generator (MobaKeygen in MobaXTerm, or PuTTYgen for PuTTY), protect it with a passphrase, and add the public key to ~/.ssh/authorized_keys on Anunna. PuTTY users can hold the key in Pageant so they do not have to type the passphrase each time. See the PuTTY homepage for full instructions.
Logging in without a password
You can configure SSH to log in without typing your password each time; see SSH without password.
Connecting to a compute node
To open a shell or a direct connection on a compute node where your job is running, see Compute Nodes.