windyboy
b0c01b2551
- RUNBOOKS.md: repo-level spec (six-field model, naming, safety, maturity path) - runbooks/_template.md + README.md: standard template and 16-entry routing index - new: issue-to-merge, fix-ci, release, rollback, network-change, network-recovery - light-enhance 10 existing runbooks with Purpose/Scope/Safety headers - AGENTS.md: point step 3 at index/spec, add runbook execution rules - docs/agent-runbook-guide.md: archive of Manus AI guide
76 lines
2.5 KiB
Markdown
76 lines
2.5 KiB
Markdown
# AdGuard Home health — dns.windy.lan
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## Purpose
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Read-only health check of the AdGuard Home LAN DNS service.
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## Scope
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- Applicable: [dns.windy.lan](../hosts/dns.windy.lan.md) (`192.168.66.36`).
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- Read-only: does not expose query-log contents or secrets; does not change configuration.
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This runbook is read-only. It does not expose query-log contents or secrets.
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Routine checks run through Ansible on demand:
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```bash
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cd ansible
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ansible-playbook playbooks/health-report.yml --limit adguardhome
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```
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The same sanitized profile is installed as a daily server-local timer
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(`vps-healthcheck.timer`, output at `/var/lib/vps-health/latest.json`) via
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`playbooks/healthchecks.yml`; the manual checks below are for focused diagnosis.
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## Verify service and configuration
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```bash
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ssh -4 -o BatchMode=yes windy@192.168.66.36
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sudo docker ps --filter name=^/adguardhome$
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sudo docker exec adguardhome /opt/adguardhome/AdGuardHome --check-config \
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-c /opt/adguardhome/conf/AdGuardHome.yaml
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sudo ss -lntup | grep -E '(:53|:80)'
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```
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Expected: DNS listens on TCP/UDP 53, and the HTTP UI listens only on
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`192.168.66.36:80`.
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## Verify DNS and storage
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```bash
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dig +time=5 +tries=1 @192.168.66.36 example.com A +noall +comments +answer
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dig +time=5 +tries=1 @192.168.66.36 example.com AAAA +noall +comments +answer
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dig +time=5 +tries=1 @192.168.66.36 hass.windy.lan A +noall +comments +answer
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sudo docker logs --since 30m adguardhome 2>&1 | grep -Ei '\[(error|warn|fatal)\]|level=(error|warn|fatal)' || true
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df -h /opt/adguardhome/work
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```
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The host intentionally accepts DNS from LAN55 and LAN66. Do not infer a
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broken DNS policy merely because `allowed_clients` is empty.
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## Verify management UI boundary
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From LAN66, the UI should return a login redirect:
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```bash
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curl -sS -o /dev/null -w '%{http_code}\n' http://192.168.66.36/
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```
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From a LAN55 source, TCP/80 should time out or be refused by the dedicated
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`agh-ui-access.service` nftables rule. Do not alter this rule to restrict
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port 53 without an explicit network-access review.
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## DNSSEC and PTR caveats
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DNSSEC is currently disabled. Before enabling it, select upstreams that pass
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a known-bad-signature test; an enabled DO bit alone is not validation.
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Private PTR forwarding is intentionally absent because the EdgeRouter does
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not currently answer private PTR requests.
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## Safety
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- Read-only: never change the DNS policy or the `agh-ui-access.service` nftables rule during this check.
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- Do not infer a broken DNS policy from an empty `allowed_clients`.
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- If live state conflicts with an expected value, `STOP` and report.
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