> ## Documentation Index
> Fetch the complete documentation index at: https://docs.kinetica.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Passwordless SSH

## Passwordless SSH

If *Kinetica* is installed in a clustered environment, configuring passwordless
SSH will make management considerably easier.  Run the following command on the
*head node* to set up passwordless *SSH* between the *head node* and the
*worker nodes* for the `gpudb` users created during deployment:

```
sudo /opt/gpudb/core/bin/gpudb_hosts_ssh_copy_id.sh
```

If necessary, you can copy SSH public keys for non-`gpudb` users to all the
hosts in a cluster (made available with `gpudb_hosts_addresses.sh`) using the
`ssh-copy-id` tool that is part of OpenSSH:

```
ssh-copy-id -i ~/.ssh/<public_key_name> <user>@<hostname>
```