Skip to content

Latest commit

 

History

History
70 lines (43 loc) · 1.76 KB

step-3-ansible-access-to-kubernetes-cluster.md

File metadata and controls

70 lines (43 loc) · 1.76 KB
Raw

STEP 3 - Ansible Access to Kubernetes Cluster

Ansible will configure the Kubernetes hosts via SSH. The user Ansible connects with must be root or have the capability of escalating privileges to root.

Commands in this step provide an example of SSH configuration and access to Kubernetes hosts and testing those connections.

Section Overview

The command sets provided in this section may be copied and pasted into your terminal without edit unless otherwise noted.

Create SSH Keys on Ansible Host

  • Accept the defaults to create a public-private key pair
ssh-keygen -t rsa -C $(hostname) -f "$HOME/.ssh/id_rsa" -P "" ; cat ~/.ssh/id_rsa.pub

Confirm SSH Keys

  • The keys will be stored in the user’s home directory
  • Use these commands to verify keys
cd ~/.ssh ; ls

Example files created

authorized_keys  id_rsa  id_rsa.pub

Copy Public Key to the Kubernetes Hosts

Template

  • Replace the username and IP address variables in the template with your own settings. Refer to the Example for further clarification.
ssh-copy-id -i ~/.ssh/id_rsa.pub <username>@<ip-address>

Example

  • Conduct this step for every Kubernetes control plane and worker node in the cluster
ssh-copy-id -i ~/.ssh/id_rsa.pub root@10.88.94.5

Confirm SSH to the Kubernetes Hosts

  • Ansible should be able to access all Kubernetes hosts with no password

Template

  • Replace the username and IP address variables in the template with your own settings. Refer to the Example for further clarification.
ssh -i ~/.ssh/id_rsa <username>@<ip-address>

Example

  • Conduct this access test for every Kubernetes control plane and worker node in the cluster
ssh -i ~/.ssh/id_rsa root@10.88.94.5