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- K3s has some absolute paths set in various places which cannot be changed. Using a symbolic link was the easiest fix. This is nice for running K3S on SBC that must boot to SD but K3S data should be stored on a faster drive. - Other changes are for making the site playbook replayable without resetting the cluster. Ideally you can rerun it to check existing nodes or to add new ones. Signed-off-by: Derek Nola <derek.nola@suse.com>
66 lines
1.5 KiB
Markdown
66 lines
1.5 KiB
Markdown
# Build a Kubernetes cluster using k3s via Ansible
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Author: <https://github.com/itwars>
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## K3s Ansible Playbook
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Build a Kubernetes cluster using Ansible with k3s. The goal is easily install a Kubernetes cluster on machines running:
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- [X] Debian
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- [X] Ubuntu
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- [X] CentOS
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on processor architecture:
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- [X] x64
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- [X] arm64
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- [X] armhf
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## System requirements
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Deployment environment must have Ansible 2.4.0+
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Master and nodes must have passwordless SSH access
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## Usage
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First copy the sample inventory to `inventory.yml`.
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```bash
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cp inventory-sample.yml inventory.yml
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```
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Second edit the inventory file to match your cluster setup. For example:
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```bash
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k3s_cluster:
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children:
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server:
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hosts:
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192.16.35.11
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agent:
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hosts:
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192.16.35.12
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192.16.35.13
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```
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If needed, you can also edit `vars` section at the bottom to match your environment.
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If multiple hosts are in the server group the playbook will automatically setup k3s in HA mode with embedded etcd.
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An odd number of server nodes is recommended (3,5,7). Read the offical documentation below for more information and options.
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https://rancher.com/docs/k3s/latest/en/installation/ha-embedded/
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Using a loadbalancer or VIP as the API endpoint is preferred but not covered here.
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Start provisioning of the cluster using the following command:
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```bash
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ansible-playbook playbook/site.yml -i inventory.yml
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```
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## Kubeconfig
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To confirm access to your **Kubernetes** cluster use the following:
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```bash
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kubectl get nodes
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```
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