Set fs.inotify.max_user_instances=8192 by default (#13075)

roles/kubernetes/preinstall/tasks/0080-system-configurations.yml

@@ -125,6 +125,27 @@
     - { name: vm.panic_on_oom, value: 0 }
   when: kubelet_protect_kernel_defaults | bool
 
+- name: Read current sysctl values
+  command: sysctl -n {{ item.key }}
+  register: sysctl_settings
+  changed_when: false
+  vars:
+    # For integer sysctls only
+    sysctl_minimum_values:
+      fs.inotify.max_user_instances: 8192
+  loop: "{{ sysctl_minimum_values | dict2items }}"
+
+- name: Increase sysctl value if lower than minimum
+  ansible.posix.sysctl:
+    sysctl_file: "{{ sysctl_file_path }}"
+    name: "{{ item.item.key }}"
+    value: "{{ item.item.value }}"
+    state: present
+    reload: true
+    ignoreerrors: "{{ sysctl_ignore_unknown_keys }}"
+  when: item.stdout | int < item.item.value
+  loop: "{{ sysctl_settings.results }}"
+
 - name: Check dummy module
   community.general.modprobe:
     name: dummy