---
- name: Install baseline packages (guest agent, Longhorn/iscsi/nfs prereqs)
  ansible.builtin.apt:
    name: "{{ node_baseline_packages }}"
    state: present
    update_cache: true
    cache_valid_time: 3600

- name: Persist kernel modules for k3s/Cilium/Longhorn
  ansible.builtin.copy:
    dest: /etc/modules-load.d/k3s-cilium-longhorn.conf
    owner: root
    group: root
    mode: "0644"
    content: "{{ node_baseline_kernel_modules | join('\n') }}\n"

- name: Load kernel modules now
  community.general.modprobe:
    name: "{{ item }}"
    state: present
  loop: "{{ node_baseline_kernel_modules }}"

- name: Install sysctl tuning for k3s/Cilium
  ansible.builtin.copy:
    dest: /etc/sysctl.d/99-k3s-cilium.conf
    owner: root
    group: root
    mode: "0644"
    content: |
      net.bridge.bridge-nf-call-iptables  = 1
      net.bridge.bridge-nf-call-ip6tables = 1
      net.ipv4.ip_forward                 = 1
      net.ipv6.conf.all.forwarding        = 1
      fs.inotify.max_user_instances       = 8192
      fs.inotify.max_user_watches         = 524288
  notify: Reload sysctl

- name: Enable and start iscsid (Longhorn prerequisite)
  ansible.builtin.systemd:
    name: iscsid
    enabled: true
    state: started

# qemu-guest-agent binds to the virtio-serial channel /dev/virtio-ports/org.qemu.guest_agent.0,
# which Proxmox attaches only when the VM's `agent` option is enabled. Our tofu keeps agent
# DISABLED on purpose (enabling it makes `tofu apply` block up to 15m waiting for an agent the
# stock Debian cloud image hasn't installed yet — bpg gotcha). So we ENABLE the unit for the day
# a channel exists, but only START it when the channel is actually present — never fail the
# baseline over a missing hypervisor channel.
- name: Check whether the qemu guest-agent virtio channel is attached
  ansible.builtin.stat:
    path: /dev/virtio-ports/org.qemu.guest_agent.0
  register: node_baseline_qga_channel

- name: Enable qemu-guest-agent (start only when its virtio channel is present)
  ansible.builtin.systemd:
    name: qemu-guest-agent
    enabled: true
    state: "{{ 'started' if node_baseline_qga_channel.stat.exists else 'stopped' }}"

- name: Create ext4 filesystem on the Longhorn data disk (data-safe; skips if present)
  community.general.filesystem:
    fstype: ext4
    dev: "{{ node_baseline_longhorn_device }}"
    opts: "-L {{ node_baseline_longhorn_fs_label }}"

- name: Mount the Longhorn data disk
  ansible.posix.mount:
    path: "{{ node_baseline_longhorn_mount }}"
    src: "LABEL={{ node_baseline_longhorn_fs_label }}"
    fstype: ext4
    opts: "defaults,nofail,x-systemd.device-timeout=5s"
    state: mounted

- name: Disable swap now
  ansible.builtin.command: swapoff -a
  changed_when: false

- name: Neutralize swap entries in fstab (kubelet requires swap off)
  ansible.builtin.replace:
    path: /etc/fstab
    regexp: '^([^#].*\sswap\s.*)$'
    replace: '# \1  # disabled for k3s/kubelet'