Commit 8484c015 authored by Nicholas Malcolm's avatar Nicholas Malcolm Committed by Derek Nola
Browse files

Fix k3s_server_location only working on default 



- 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: default avatarDerek Nola <derek.nola@suse.com>
parent 7cc70ad6

README.md

+2 −2
Original line number Diff line number Diff line
@@ -58,8 +58,8 @@ ansible-playbook playbook/site.yml -i inventory.yml 


## Kubeconfig



To get access to your **Kubernetes** cluster just

To confirm access to your **Kubernetes** cluster use the following:



```bash

scp debian@server_ip:~/.kube/config ~/.kube/config

kubectl get nodes

```

roles/k3s/server/tasks/main.yml

+12 −12
Original line number Diff line number Diff line
@@ -7,7 +7,7 @@ 
          systemd-run -p RestartSec=2 -p Restart=on-failure --unit=k3s-init k3s server

          --cluster-init --tls-san {{ api_endpoint }} --data-dir {{ k3s_server_location }}

          {{ extra_server_args}}

        creates: "{{ systemd_dir }}/k3s-init.service"

        creates: "{{ k3s_server_location }}/server/node-token"

      when: groups['server'] | length > 1



    - name: Start temporary service for single server cluster
@@ -15,7 +15,7 @@ 
        cmd: >

          systemd-run -p RestartSec=2 -p Restart=on-failure --unit=k3s-init k3s server

           --tls-san {{ api_endpoint }} --data-dir {{ k3s_server_location }} {{ extra_server_args }}

        creates: "{{ systemd_dir }}/k3s-init.service"

        creates: "{{ k3s_server_location }}/server/node-token"

      when: groups['server'] | length == 1



    - name: Wait for node-token
@@ -75,17 +75,17 @@ 
        flat: true

  when: ansible_hostname == groups['server'][0]



- name: Init additonal server nodes if any

- name: Start other server if any and verify status

  block:

    - name: Init additonal server nodes

      ansible.builtin.command:

        cmd: >

          systemd-run -p RestartSec=2 -p Restart=on-failure --unit=k3s-init k3s server

          --token "{{ hostvars[groups['server'][0]]['token'] }}" --server https://{{ api_endpoint }}:{{ api_port }}

          --tls-san {{ api_endpoint }} --data-dir {{ k3s_server_location }} {{ extra_server_args }}

    creates: "{{ systemd_dir }}/k3s-init.service"

        creates: "{{ k3s_server_location }}/server/node-token"

      when: ansible_hostname != groups['server'][0]



- name: Verification and cleanup

  block:

    - name: Verify that all server nodes joined

      ansible.builtin.command:

        cmd: k3s kubectl get nodes -l "node-role.kubernetes.io/control-plane=true" -o=jsonpath="{.items[*].metadata.name}"

roles/prereq/tasks/main.yml

+14 −0
Original line number Diff line number Diff line
@@ -52,3 +52,17 @@ 
    path: /etc/sudoers

    validate: 'visudo -cf %s'

  when: ansible_distribution in ['CentOS', 'Red Hat Enterprise Linux','RedHat']



- name: Make k3s directory

  ansible.builtin.file:

    path: "/var/lib/rancher"

    mode: 0755

    state: directory



- name: Create symlink

  ansible.builtin.file:

    dest: /var/lib/rancher/k3s

    src: "{{ k3s_server_location }}"

    force: true

    state: link

  when: k3s_server_location != "/var/lib/rancher/k3s"

roles/reset/tasks/main.yml

+2 −1
Original line number Diff line number Diff line
@@ -28,7 +28,7 @@ 
    - /run/k3s

    - /var/lib/kubelet

    - /run/netns

    - /var/lib/rancher/k3s

    - "{{ k3s_server_location }}"

  loop_control:

    loop_var: mounted_fs
@@ -42,6 +42,7 @@ 
    - "{{ systemd_dir }}/k3s-agent.service"

    - /etc/rancher/k3s

    - /var/lib/kubelet

    - /var/lib/rancher/k3s

    - "{{ k3s_server_location }}"



- name: Systemd daemon reload