Merge pull request #297 from lukapetrovic-git/main

Added option to configure KubeletConfiguration

Author: MonolithProjects

README.md

@@ -325,6 +325,15 @@ rke2_wait_for_all_pods_to_be_ready: false
 # Enable debug mode (rke2-service)
 rke2_debug: false
 
+# (Optional) Customize kubelet config using KubeletConfiguration - https://kubernetes.io/docs/reference/config-api/kubelet-config.v1beta1/
+# rke2_kubelet_config:
+#   imageGCHighThresholdPercent: 80
+#   imageGCLowThresholdPercent: 70
+# Note that you also need to add the following to kubelet args:
+# rke2_kubelet_arg:
+#   - "--config=/etc/rancher/rke2/kubelet-config.yaml"
+rke2_kubelet_config: {}
+
 # (Optional) Customize default kubelet arguments
 # rke2_kubelet_arg:
 #   - "--system-reserved=cpu=100m,memory=100Mi"
@@ -346,6 +355,7 @@ rke2_service_cidr:
 
 # Enable SELinux for rke2
 rke2_selinux: false
+
 ```
 
 ## Inventory file example

defaults/main.yml

@@ -287,6 +287,15 @@ rke2_wait_for_all_pods_to_be_ready: false
 # Enable debug mode (rke2-service)
 rke2_debug: false
 
+# (Optional) Customize kubelet config using KubeletConfiguration - https://kubernetes.io/docs/reference/config-api/kubelet-config.v1beta1/
+# rke2_kubelet_config:
+#   imageGCHighThresholdPercent: 80
+#   imageGCLowThresholdPercent: 70
+# Note that you also need to add the following to kubelet args:
+# rke2_kubelet_arg:
+#   - "--config=/etc/rancher/rke2/kubelet-config.yaml"
+rke2_kubelet_config: {}
+
 # (Optional) Customize default kubelet arguments
 # rke2_kubelet_arg:
 #   - "--system-reserved=cpu=100m,memory=100Mi"

tasks/first_server.yml

@@ -21,6 +21,16 @@
     mode: 0600
   notify: "Config file changed"
 
+- name: Copy kubelet config
+  ansible.builtin.template:
+    src: templates/kubelet-config.yaml.j2
+    dest: /etc/rancher/rke2/kubelet-config.yaml
+    owner: root
+    group: root
+    mode: 0600
+  when: rke2_kubelet_config | length > 0
+  notify: "Config file changed"
+
 - name: Copy Containerd Registry Configuration file
   ansible.builtin.template:
     src: "{{ rke2_custom_registry_path }}"

tasks/main.yml

@@ -1,5 +1,4 @@
 ---
-
 - name: Install Keepalived when HA mode is enabled
   ansible.builtin.include_tasks: keepalived.yml
   when:
@@ -31,7 +30,6 @@
     - rke2_ha_mode_kubevip | bool
     - not rke2_ha_mode_keepalived | bool
 
-
 - name: Copy kube-vip manifests to the masternode
   ansible.builtin.include_tasks: kubevip.yml
   when:

tasks/remaining_nodes.yml

@@ -1,5 +1,4 @@
 ---
-
 - name: Create the RKE2 config dir
   ansible.builtin.file:
     state: directory
@@ -27,6 +26,16 @@
     mode: 0600
   notify: "Config file changed"
 
+- name: Copy kubelet config
+  ansible.builtin.template:
+    src: templates/kubelet-config.yaml.j2
+    dest: /etc/rancher/rke2/kubelet-config.yaml
+    owner: root
+    group: root
+    mode: 0600
+  when: rke2_kubelet_config | length > 0
+  notify: "Config file changed"
+
 - name: Copy Containerd Registry Configuration file
   ansible.builtin.template:
     src: "{{ rke2_custom_registry_path }}"
@@ -85,8 +94,7 @@
     executable: /bin/bash
   changed_when: false
   register: all_ready_nodes
-  until:
-    "groups[rke2_cluster_group_name] | length == all_ready_nodes.stdout | int"
+  until: "groups[rke2_cluster_group_name] | length == all_ready_nodes.stdout | int"
   retries: 100
   delay: 15
   when:

tasks/standalone.yml

@@ -17,6 +17,16 @@
     mode: 0600
   notify: "Config file changed"
 
+- name: Copy kubelet config
+  ansible.builtin.template:
+    src: templates/kubelet-config.yaml.j2
+    dest: /etc/rancher/rke2/kubelet-config.yaml
+    owner: root
+    group: root
+    mode: 0600
+  when: rke2_kubelet_config | length > 0
+  notify: "Config file changed"
+
 - name: Copy Containerd Registry Configuration file
   ansible.builtin.template:
     src: "{{ rke2_custom_registry_path }}"

templates/kubelet-config.yaml.j2

@@ -0,0 +1,4 @@
+---
+apiVersion: kubelet.config.k8s.io/v1beta1
+kind: KubeletConfiguration
+{{ rke2_kubelet_config | to_nice_yaml(indent=2) }}