nas

1---
2- name: Apply sysctl performance settings
3  sysctl:
4    name: "{{ item.key }}"
5    value: "{{ item.value }}"
6    state: present
7    reload: true
8  loop: "{{ nas_sysctl_settings | dict2items }}"
9  become: true
10
11- name: Set TCP congestion control algorithm
12  sysctl:
13    name: net.ipv4.tcp_congestion_control
14    value: "{{ nas_tcp_congestion_control }}"
15    state: present
16    reload: true
17  become: true
18  when: nas_tcp_congestion_control is defined
19
20- name: Enable TCP window scaling
21  sysctl:
22    name: net.ipv4.tcp_window_scaling
23    value: "1"
24    state: present
25    reload: true
26  become: true
27  when: nas_tcp_window_scaling | bool
28
29- name: Configure I/O scheduler for storage devices
30  shell: |
31    for dev in $(lsblk -nd -o NAME | grep -E '^(sd|nvme|md)'); do
32      echo mq-deadline > /sys/block/$dev/queue/scheduler 2>/dev/null || true
33    done
34  become: true
35  changed_when: false
36
37- name: Set read-ahead values for storage devices
38  shell: |
39    for dev in $(lsblk -nd -o NAME | grep -E '^(sd|nvme|md)'); do
40      blockdev --setra 4096 /dev/$dev 2>/dev/null || true
41    done
42  become: true
43  changed_when: false
44
45- name: Configure NFS performance settings
46  lineinfile:
47    path: /etc/default/nfs-kernel-server
48    regexp: '^{{ item.key }}='
49    line: "{{ item.key }}={{ item.value }}"
50    backup: true
51  loop:
52    - { key: "RPCNFSDCOUNT", value: "16" }
53    - { key: "RPCNFSDPRIORITY", value: "0" }
54  become: true
55  notify: restart nfs services
56
57