inference-bot
3a89c77cfc
New box: 179.237.86.116 / 2001:1600:18:206::89, 4CPU/12GB/250GB, Ubuntu 26.04 LTS, one free snapshot slot, reverse DNS unset on both addresses. IPv6 exists, so the 18 AAAA records are repointed rather than deleted.
97 lines
5.8 KiB
Markdown
97 lines
5.8 KiB
Markdown
# DNS change sheet — Cloudron migration (Hostinger → Infomaniak)
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Prepared 2026-10-30 from a live zone inventory (`zone_inventory.json`, 41 records).
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Registrar: **yoursrs.com** (NS for domains.coop). Cloudron cannot manage these records;
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every change below is manual. **Nothing here is time-sensitive except the TTL lowering.**
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## Counts, so the switch is not underestimated
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- **19 A records** → `179.199.135.72`
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- **18 AAAA records** → `2a02:4780:6e:83fd::1` (Hostinger's range)
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- 1 MX, 1 SPF TXT, 1 DKIM TXT, 1 DMARC TXT
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- **No CAA records**, so no certificate-authority restriction to update.
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- **Configured TTL is 3600 s on every record.** (Lower these a day early; the 1090–1204 s
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seen on some answers are cache countdowns, not zone values.)
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## Records to change at cutover
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| Name | Type | Current | Set to |
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|---|---|---|---|
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| `chat-legacy.inference.coop` | A | `179.199.135.72` | `179.237.86.116` |
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| `chat.inference.coop` | A | `179.199.135.72` | `179.237.86.116` |
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| `cloud.inference.coop` | A | `179.199.135.72` | `179.237.86.116` |
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| `dashboard.inference.coop` | A | `179.199.135.72` | `179.237.86.116` |
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| `docs.inference.coop` | A | `179.199.135.72` | `179.237.86.116` |
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| `email.inference.coop` | A | `179.199.135.72` | `179.237.86.116` |
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| `forum.inference.coop` | A | `179.199.135.72` | `179.237.86.116` |
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| `gateway.inference.coop` | A | `179.199.135.72` | `179.237.86.116` |
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| `git.inference.coop` | A | `179.199.135.72` | `179.237.86.116` |
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| `inference.coop` | A | `179.199.135.72` | `179.237.86.116` |
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| `matrix.inference.coop` | A | `179.199.135.72` | `179.237.86.116` |
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| `my.inference.coop` | A | `179.199.135.72` | `179.237.86.116` |
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| `newsletter.inference.coop` | A | `179.199.135.72` | `179.237.86.116` |
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| `panel.inference.coop` | A | `179.199.135.72` | `179.237.86.116` |
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| `portal.inference.coop` | A | `179.199.135.72` | `179.237.86.116` |
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| `search.inference.coop` | A | `179.199.135.72` | `179.237.86.116` |
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| `status.inference.coop` | A | `179.199.135.72` | `179.237.86.116` |
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| `vault.inference.coop` | A | `179.199.135.72` | `179.237.86.116` |
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| `www.inference.coop` | A | `179.199.135.72` | `179.237.86.116` |
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| `chat-legacy.inference.coop` | AAAA | `2a02:4780:6e:83fd::1` | `2001:1600:18:206::89` |
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| `chat.inference.coop` | AAAA | `2a02:4780:6e:83fd::1` | `2001:1600:18:206::89` |
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| `cloud.inference.coop` | AAAA | `2a02:4780:6e:83fd::1` | `2001:1600:18:206::89` |
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| `dashboard.inference.coop` | AAAA | `2a02:4780:6e:83fd::1` | `2001:1600:18:206::89` |
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| `docs.inference.coop` | AAAA | `2a02:4780:6e:83fd::1` | `2001:1600:18:206::89` |
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| `email.inference.coop` | AAAA | `2a02:4780:6e:83fd::1` | `2001:1600:18:206::89` |
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| `forum.inference.coop` | AAAA | `2a02:4780:6e:83fd::1` | `2001:1600:18:206::89` |
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| `gateway.inference.coop` | AAAA | `2a02:4780:6e:83fd::1` | `2001:1600:18:206::89` |
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| `git.inference.coop` | AAAA | `2a02:4780:6e:83fd::1` | `2001:1600:18:206::89` |
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| `inference.coop` | AAAA | `2a02:4780:6e:83fd::1` | `2001:1600:18:206::89` |
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| `matrix.inference.coop` | AAAA | `2a02:4780:6e:83fd::1` | `2001:1600:18:206::89` |
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| `my.inference.coop` | AAAA | `2a02:4780:6e:83fd::1` | `2001:1600:18:206::89` |
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| `newsletter.inference.coop` | AAAA | `2a02:4780:6e:83fd::1` | `2001:1600:18:206::89` |
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| `panel.inference.coop` | AAAA | `2a02:4780:6e:83fd::1` | `2001:1600:18:206::89` |
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| `portal.inference.coop` | AAAA | `2a02:4780:6e:83fd::1` | `2001:1600:18:206::89` |
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| `search.inference.coop` | AAAA | `2a02:4780:6e:83fd::1` | `2001:1600:18:206::89` |
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| `status.inference.coop` | AAAA | `2a02:4780:6e:83fd::1` | `2001:1600:18:206::89` |
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| `vault.inference.coop` | AAAA | `2a02:4780:6e:83fd::1` | `2001:1600:18:206::89` |
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`www` has no app behind it in the Cloudron inventory — confirm whether it is an alias,
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a redirect, or stale before touching it.
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## Records that must NOT change, but must be re-verified after the restore
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| Name | Type | Value | Why |
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|---|---|---|---|
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| `inference.coop` | MX | `10 my.inference.coop.` | Follows the A record; no MX edit needed. |
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| `inference.coop` | TXT (SPF) | `v=spf1 a:my.inference.coop ~all` | Hostname-based — survives the IP change. |
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| `cloudron._domainkey` | TXT (DKIM) | `v=DKIM1; t=s; p=MIGfMA0…` | **Must match the key inside the restored mail app's data.** Mismatch + DMARC below = silently discarded mail. |
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| `_dmarc` | TXT | `v=DMARC1; p=reject; pct=100` | Reject policy: misaligned mail is DISCARDED, not junked. |
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## Sequence (see the main runbook §4)
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1. A day early: set every A and AAAA TTL to 300 s.
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2. At cutover: point A records at **`179.237.86.116`**; repoint every AAAA record to **`2001:1600:18:206::89`**
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(the new box has IPv6, so this is a repoint, not a delete — but it must happen in
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the same pass: an IPv6-capable client or homeserver left on Hostinger's address
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reaches the old box even after the A switch).
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3. Verify with the resolver set below, not one resolver.
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```
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for h in inference.coop my.inference.coop matrix.inference.coop gateway.inference.coop; do
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dig +short A $h @1.1.1.1; dig +short A $h @8.8.8.8; dig +short AAAA $h @1.1.1.1
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done
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```
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## The new box (given 2026-10-30)
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- **IPv4** `179.237.86.116` · **IPv6** `2001:1600:18:206::89`
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- 4 CPU · 12 GB RAM · **250 GB disk** · unlimited traffic
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- **1 snapshot slot free** — take a snapshot *after* a clean restore and *before* the DNS
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switch, so a bad restore is a revert rather than a rebuild.
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- Location Plan-les-Ouates, Switzerland (same provider as the backup target, so the
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restore reads from inside Infomaniak's network).
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- Ubuntu **26.04 LTS** — confirm Cloudron 9.x supports it before installing.
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- **Reverse DNS is listed as "configure" for BOTH addresses.** Set PTR → `my.inference.coop`
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on the IPv4 *and* the IPv6. A sending IP without matching PTR is the classic cause of
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fresh-IP mail landing in spam, and DMARC here is `p=reject` on our own domain.
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