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martin.fencl
2025-12-23 22:57:47 +01:00
parent a7d50a8f36
commit 1c6fb9c9c3
2 changed files with 185 additions and 227 deletions
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221
check_raid.yml
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@@ -1,7 +1,7 @@
# check_raid.yml
- name: Check mdadm RAID status on VM (via SSH from proxmox_nextcloud)
hosts: proxmox_nextcloud
- name: Check Linux MD RAID health on VM via Proxmox
hosts: linux_servers
gather_facts: false
become: true
become_user: root
@@ -14,17 +14,19 @@
vm_pass: "{{ lookup('env', 'VM_PASS') }}"
use_sudo: false
# Debug / behavior toggles (controlled via Semaphore variables)
# Debug / retries
DEBUG: "{{ lookup('env', 'DEBUG') | default(0) | int }}"
RETRIES: "{{ lookup('env', 'RETRIES') | default(10) | int }}"
# Which md device to check (md0, md1, ... or /dev/md0)
RAID_DEVICE: "{{ lookup('env', 'RAID_DEVICE') | default('md0', true) }}"
# RAID device to check (e.g. md0, md1...)
raid_md_device: "{{ lookup('env', 'RAID_MD') | default('md0', true) }}"
# Fail the job if rebuild/resync is in progress (recommended)
FAIL_ON_RESYNC: "{{ lookup('env', 'FAIL_ON_RESYNC') | default(1) | int }}"
# If 0 => fail when resync/recovery/reshape/check/repair is detected in /proc/mdstat
# If 1 => allow sync operations (still fails only on degraded [U_], [_U], etc.)
raid_allow_sync: "{{ lookup('env', 'RAID_ALLOW_SYNC') | default(1, true) | int }}"
# Fail the job if a periodic "check" is running (usually set 0 to avoid noise)
FAIL_ON_CHECK: "{{ lookup('env', 'FAIL_ON_CHECK') | default(0) | int }}"
# SSH options
ssh_connect_timeout: 15
tasks:
- name: Ensure sshpass is installed (for password-based SSH) # English comments
@@ -32,185 +34,84 @@
name: sshpass
state: present
update_cache: yes
cache_valid_time: 86400
- name: Read /proc/mdstat from VM (via SSH) # English comments
ansible.builtin.command:
argv:
- timeout
- 25s
- sshpass
- -e
- ssh
- -o
- StrictHostKeyChecking=no
- -o
- UserKnownHostsFile=/dev/null
- -o
- ConnectTimeout=10
- -o
- ConnectionAttempts=1
- -o
- NumberOfPasswordPrompts=1
- -o
- PubkeyAuthentication=no
- -o
- GSSAPIAuthentication=no
- -o
- PasswordAuthentication=yes
- -o
- ServerAliveInterval=5
- -o
- ServerAliveCountMax=2
- "ConnectTimeout={{ ssh_connect_timeout }}"
- "{{ vm_user }}@{{ vm_ip }}"
- "cat /proc/mdstat"
- bash
- -lc
- "{{ ('sudo ' if use_sudo else '') + 'cat /proc/mdstat' }}"
environment:
SSHPASS: "{{ vm_pass }}"
register: mdstat_cmd
register: mdstat_raw
changed_when: false
failed_when: false
no_log: "{{ DEBUG == 0 }}"
retries: "{{ RETRIES }}"
delay: 2
until: mdstat_raw.rc == 0
- name: Fail if we cannot read /proc/mdstat (SSH/auth/network) # English comments
ansible.builtin.assert:
that:
- mdstat_cmd.rc == 0
fail_msg: >-
Cannot read /proc/mdstat from {{ vm_ip }} (rc={{ mdstat_cmd.rc }}).
stderr={{ (mdstat_cmd.stderr | default('') | trim) }}
success_msg: "Successfully read /proc/mdstat from {{ vm_ip }}."
changed_when: false
- name: Build base variables # English comments
ansible.builtin.set_fact:
raid_md: "{{ RAID_DEVICE | regex_replace('^/dev/', '') }}"
mdstat_text: "{{ mdstat_cmd.stdout | default('') }}"
changed_when: false
- name: Extract selected md block from mdstat (no regex) # English comments
ansible.builtin.set_fact:
raid_block: >-
{%- set ns = namespace(block='') -%}
{%- for b in (mdstat_text.split('\n\n')) -%}
{%- set bb = (b | trim) -%}
{%- if bb.startswith(raid_md ~ ' :') or bb.startswith(raid_md ~ ':') -%}
{%- set ns.block = bb -%}
{%- endif -%}
{%- endfor -%}
{{ ns.block }}
changed_when: false
- name: Parse RAID status from mdstat (no regex) # English comments
ansible.builtin.set_fact:
raid_present: "{{ (raid_block | trim | length) > 0 }}"
# Extract [UU] / [U_] token by scanning bracket tokens and keeping only U/_ chars
raid_status: >-
{%- set ns = namespace(st='') -%}
{%- for line in (raid_block.splitlines() if (raid_block | length) > 0 else []) -%}
{%- for tok in line.split() -%}
{%- if tok.startswith('[') and tok.endswith(']') -%}
{%- set inner = tok[1:-1] -%}
{%- if (inner | length) > 0 and ((inner | list | difference(['U','_'])) | length == 0) -%}
{%- set ns.st = inner -%}
{%- endif -%}
{%- endif -%}
{%- endfor -%}
{%- endfor -%}
{{ ns.st }}
raid_is_degraded: "{{ (raid_status | length > 0) and ('_' in raid_status) }}"
raid_block_lower: "{{ raid_block | lower }}"
raid_is_rebuilding: >-
{{
('resync' in raid_block_lower) or
('recovery' in raid_block_lower) or
('reshape' in raid_block_lower) or
('repair' in raid_block_lower)
}}
raid_is_checking: "{{ 'check' in raid_block_lower }}"
# First line that contains an action keyword
raid_action_line: >-
{%- set ns = namespace(line='') -%}
{%- set keys = ['resync','recovery','reshape','repair','check'] -%}
{%- for line in (raid_block.splitlines() if (raid_block | length) > 0 else []) -%}
{%- set l = (line | lower) -%}
{%- for k in keys -%}
{%- if ns.line == '' and (k in l) -%}
{%- set ns.line = (line | trim) -%}
{%- endif -%}
{%- endfor -%}
{%- endfor -%}
{{ ns.line }}
# Parse progress from ".... = 12.3%" if present
raid_progress: >-
{%- set ns = namespace(p='') -%}
{%- if (raid_action_line | length) > 0 and ('=' in raid_action_line) and ('%' in raid_action_line) -%}
{%- set right = raid_action_line.split('=', 1)[1] -%}
{%- set ns.p = (right.split('%', 1)[0] | trim) -%}
{%- endif -%}
{{ ns.p }}
changed_when: false
- name: Debug | Show mdstat and parsed values # English comments
- name: Debug | Show raw /proc/mdstat # English comments
ansible.builtin.debug:
msg: |
--- /proc/mdstat ---
{{ mdstat_text }}
--- md block ({{ raid_md }}) ---
{{ raid_block }}
--- Parsed ---
raid_present={{ raid_present }}
raid_status={{ raid_status }}
raid_is_degraded={{ raid_is_degraded }}
raid_is_rebuilding={{ raid_is_rebuilding }}
raid_is_checking={{ raid_is_checking }}
raid_progress={{ raid_progress }}
raid_action_line={{ raid_action_line }}
msg: "{{ mdstat_raw.stdout }}"
when: DEBUG == 1
- name: Fail if RAID device is not present # English comments
- name: Extract RAID status token for selected MD device # English comments
ansible.builtin.set_fact:
raid_token: >-
{{
(mdstat_raw.stdout | regex_search(
raid_md_device ~ '\\s*:\\s*active.*\\n\\s*\\d+\\s+blocks.*\\[[0-9]+/[0-9]+\\]\\s*\\[([U_]+)\\]',
'\\1',
multiline=True
)) | default('')
}}
- name: Detect sync operations in mdstat (resync/recovery/reshape/check/repair) # English comments
ansible.builtin.set_fact:
raid_syncing: "{{ (mdstat_raw.stdout is search('resync|recovery|reshape|check|repair')) | bool }}"
- name: Compute degraded flag (underscore means missing member) # English comments
ansible.builtin.set_fact:
raid_degraded: "{{ (raid_token | length > 0) and ('_' in raid_token) }}"
- name: Fail if MD device not found in /proc/mdstat # English comments
ansible.builtin.assert:
that:
- raid_present
fail_msg: "RAID {{ raid_md }} not found in /proc/mdstat on VM {{ vm_ip }}."
success_msg: "RAID {{ raid_md }} found in /proc/mdstat."
- raid_token | length > 0
fail_msg: "RAID device {{ raid_md_device }} was not found in /proc/mdstat on VM ({{ vm_ip }})."
success_msg: "RAID device {{ raid_md_device }} found in /proc/mdstat."
changed_when: false
- name: Fail if RAID is degraded (missing member) # English comments
- name: Fail if RAID is degraded (token contains '_') # English comments
ansible.builtin.assert:
that:
- not raid_is_degraded
fail_msg: >-
RAID {{ raid_md }} is DEGRADED: status={{ raid_status }}.
mdstat excerpt={{ (raid_block | trim) }}
success_msg: "RAID {{ raid_md }} is OK: status={{ raid_status }}."
- not raid_degraded
fail_msg: "RAID {{ raid_md_device }} is DEGRADED: token=[{{ raid_token }}] (expected all 'U')."
success_msg: "RAID {{ raid_md_device }} is OK: token=[{{ raid_token }}]."
changed_when: false
- name: Fail if RAID rebuild/resync is in progress (optional) # English comments
- name: Fail if RAID is syncing and syncing is not allowed # English comments
ansible.builtin.assert:
that:
- not raid_is_rebuilding
fail_msg: >-
RAID {{ raid_md }} is rebuilding/resyncing.
{{ 'progress=' ~ raid_progress ~ '%; ' if (raid_progress | length) > 0 else '' }}
line={{ (raid_action_line | default('n/a', true)) }}
success_msg: "RAID {{ raid_md }} is not rebuilding/resyncing."
when: FAIL_ON_RESYNC | int == 1
- (raid_allow_sync | int) == 1 or (not raid_syncing)
fail_msg: "RAID {{ raid_md_device }} is running a sync operation (resync/recovery/reshape/check/repair) and RAID_ALLOW_SYNC=0."
success_msg: "No sync operation detected (or RAID_ALLOW_SYNC=1)."
changed_when: false
- name: Fail if RAID check is in progress (optional) # English comments
ansible.builtin.assert:
that:
- not raid_is_checking
fail_msg: >-
RAID {{ raid_md }} is running a periodic check.
{{ 'progress=' ~ raid_progress ~ '%; ' if (raid_progress | length) > 0 else '' }}
line={{ (raid_action_line | default('n/a', true)) }}
success_msg: "RAID {{ raid_md }} is not running a periodic check."
when: FAIL_ON_CHECK | int == 1
changed_when: false
- name: Print concise summary (debug) # English comments
ansible.builtin.debug:
msg: >-
RAID={{ raid_md_device }},
token=[{{ raid_token }}],
degraded={{ raid_degraded }},
syncing={{ raid_syncing }},
allow_sync={{ raid_allow_sync }}
when: DEBUG == 1