---
- name: Sysctl Tuning fuer Proxmox Hosts
  hosts: proxmox
  become: true

  tasks:

    - name: Sysctl Parameter setzen
      ansible.posix.sysctl:
        name: "{{ item.key }}"
        value: "{{ item.value }}"
        sysctl_file: /etc/sysctl.d/99-proxmox-tuning.conf
        reload: true
        state: present
      loop:
        # KVM / Virtualisierung
        - { key: vm.overcommit_memory,               value: "1" }
        - { key: vm.swappiness,                      value: "1" }
        # Viele VMs = viele File Handles
        - { key: fs.file-max,                        value: "9999999" }
        - { key: fs.inotify.max_user_watches,        value: "524288" }
        - { key: fs.inotify.max_user_instances,      value: "512" }
        # Routing zwischen VMs / Bridges
        - { key: net.ipv4.ip_forward,                value: "1" }
        # WireGuard MTU-Anpassung
        # TODO: entfernen sobald WireGuard abgeschaltet wird
        - { key: net.ipv4.tcp_mtu_probing,           value: "1" }