SSH to a Node in a CaaS Cluster
Table of Contents
Learn how to SSH to a node in a CaaS cluster. Although typically most users will use
kubectl or the API to interact with a cluster, there are some situations where you may want to connect to a node with SSH.
Note: This is a straightforward process. If you are familiar with the basics, then simply know that you will need to log into the server as the
core user with a command such as:
ssh -i ~/.ssh/id_rsa firstname.lastname@example.org
- A CaaS cluster
- A Linux server or desktop to SSH from
Download and Install the SSH Keys
Instead of a password, SSH access to a node is authenticated by SSH keys. This helps to keep your CaaS cluster secure.
Log into your account. Go to Organization > Setup.
Scroll down and click the download link for your SSH keypair.
This will download a compressed (zipped) file to your computer containing two files:
- Your private key:
- Your public key:
Upload both files to the
~/.ssh/ directory on your server. If this directory does not exist, create it.
Connect to your server, or open a terminal window on your desktop, and set the permissions for the directory and files with the following commands:
chmod 700 .ssh chmod 644 .ssh/id_rsa.pub chmod 600 .ssh/id_rsa
Connect to the Node
To find the public IP for the node, go to Control Plane and click the cluster's name.
Note the Public IP address for the node.
From your SSH or terminal session, connect to the node with SSH using the following command:
ssh -i ~/.ssh/id_rsa core@[public IP address]
For example, if the node's public IP address is 220.127.116.11 the command is:
ssh -i ~/.ssh/id_rsa email@example.com
You will be authenticated based on the SSH keys, and automatically logged into the node.