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Merge pull request #120 from bjw-s/staticpods

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Allow control plane static pods
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Xan Manning 2021-05-26 18:05:25 +01:00 committed by GitHub
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5 changed files with 47 additions and 16 deletions
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33
README.md
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@ -61,22 +61,23 @@ below.
Below are variables that are set against all of the play hosts for environment
consistency. These are generally cluster-level configuration.
| Variable | Description | Default Value |
|----------------------------------|------------------------------------------------------------------------------------|--------------------------------|
| `k3s_state` | State of k3s: installed, started, stopped, downloaded, uninstalled, validated. | installed |
| `k3s_release_version` | Use a specific version of k3s, eg. `v0.2.0`. Specify `false` for stable. | `false` |
| `k3s_config_file` | Location of the k3s configuration file. | `/etc/rancher/k3s/config.yaml` |
| `k3s_build_cluster` | When multiple play hosts are available, attempt to cluster. Read notes below. | `true` |
| `k3s_registration_address` | Fixed registration address for nodes. IP or FQDN. | NULL |
| `k3s_github_url` | Set the GitHub URL to install k3s from. | https://github.com/k3s-io/k3s |
| `k3s_install_dir` | Installation directory for k3s. | `/usr/local/bin` |
| `k3s_install_hard_links` | Install using hard links rather than symbolic links. | `false` |
| `k3s_server_manifests_templates` | A list of Auto-Deploying Manifests Templates (only deploys on primary controller). | [] |
| `k3s_use_experimental` | Allow the use of experimental features in k3s. | `false` |
| `k3s_use_unsupported_config` | Allow the use of unsupported configurations in k3s. | `false` |
| `k3s_etcd_datastore` | Enable etcd embedded datastore (read notes below). | `false` |
| `k3s_debug` | Enable debug logging on the k3s service. | `false` |
| `k3s_registries` | Registries configuration file content. | `{ mirrors: {}, configs:{} }` |
| Variable | Description | Default Value |
|---------------------------------------|------------------------------------------------------------------------------------|--------------------------------|
| `k3s_state` | State of k3s: installed, started, stopped, downloaded, uninstalled, validated. | installed |
| `k3s_release_version` | Use a specific version of k3s, eg. `v0.2.0`. Specify `false` for stable. | `false` |
| `k3s_config_file` | Location of the k3s configuration file. | `/etc/rancher/k3s/config.yaml` |
| `k3s_build_cluster` | When multiple play hosts are available, attempt to cluster. Read notes below. | `true` |
| `k3s_registration_address` | Fixed registration address for nodes. IP or FQDN. | NULL |
| `k3s_github_url` | Set the GitHub URL to install k3s from. | https://github.com/k3s-io/k3s |
| `k3s_install_dir` | Installation directory for k3s. | `/usr/local/bin` |
| `k3s_install_hard_links` | Install using hard links rather than symbolic links. | `false` |
| `k3s_server_manifests_templates` | A list of Auto-Deploying Manifests Templates (only deploys on primary controller). | [] |
| `k3s_server_pod_manifests_templates` | A list of templates for installing static pod manifests on the control plane. | [] |
| `k3s_use_experimental` | Allow the use of experimental features in k3s. | `false` |
| `k3s_use_unsupported_config` | Allow the use of unsupported configurations in k3s. | `false` |
| `k3s_etcd_datastore` | Enable etcd embedded datastore (read notes below). | `false` |
| `k3s_debug` | Enable debug logging on the k3s service. | `false` |
| `k3s_registries` | Registries configuration file content. | `{ mirrors: {}, configs:{} }` |
### K3S Service Configuration

3
defaults/main.yml
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@ -38,6 +38,9 @@ k3s_install_hard_links: false
# A list of templates used for preconfigure the cluster.
k3s_server_manifests_templates: []
# A list of templates used for installing static pod manifests on the control plane.
k3s_server_pod_manifests_templates: []
# Use experimental features in k3s?
k3s_use_experimental: false

18
tasks/build/preconfigure-k3s-static-pod-manifests.yml Normal file
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@ -0,0 +1,18 @@
---
- name: Ensure that the pod-manifests directory exists
ansible.builtin.file:
state: directory
path: "{{ k3s_server_pod_manifests_dir }}"
mode: 0755
when: k3s_server_pod_manifests_templates | length > 0
become: "{{ k3s_become_for_directory_creation | ternary(true, false, k3s_become_for_all) }}"
# https://github.com/k3s-io/k3s/pull/1691
- name: Ensure static pod manifests are copied to controllers
ansible.builtin.template:
src: "{{ item }}"
dest: "{{ k3s_server_pod_manifests_dir }}/{{ item | basename | replace('.j2','') }}"
mode: 0644
loop: "{{ k3s_server_pod_manifests_templates }}"
become: "{{ k3s_become_for_directory_creation | ternary(true, false, k3s_become_for_all) }}"

5
tasks/state-installed.yml
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@ -39,6 +39,11 @@
- k3s_primary_control_node
- k3s_server_manifests_templates | length > 0
- import_tasks: build/preconfigure-k3s-static-pod-manifests.yml
when:
- k3s_control_node
- k3s_server_pod_manifests_templates | length > 0
- import_tasks: build/install-k3s.yml
- name: Ensure containerd installation tasks are run

4
vars/main.yml
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@ -84,6 +84,10 @@ k3s_token_location: "{{ k3s_config_dir }}/cluster-token"
# https://rancher.com/docs/k3s/latest/en/advanced/#auto-deploying-manifests
k3s_server_manifests_dir: "{{ k3s_data_dir }}/server/manifests"
# Path for static pod manifests that are deployed on the control plane
# https://github.com/k3s-io/k3s/pull/1691
k3s_server_pod_manifests_dir: "{{ k3s_data_dir }}/agent/pod-manifests"
# Packages that we need to check are installed
k3s_check_packages: []
# - name: dummy