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docs(deploy): the Storage Box needs external reachability

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A Storage Box answers only inside Hetzner's network unless External
Reachability is on, for the box and for the sub-account. FTP and SFTP on
port 22 can't be turned off, so the sub-account turns off Samba and
WebDAV only. A host key of another type is checked against Hetzner's
list too.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Signed-off-by: Tizian 「ティツィアーン」 <raisondetredev@pm.me>
This commit is contained in:
Tizian 「ティツィアーン」 2026-10-03 21:41:21 +02:00
commit 6c20c44cf5
Signed by: raisondetredev
GPG key ID: 07F6FCF405488B64
1 changed files with 11 additions and 9 deletions
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20
deploy/backups.md
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@ -41,14 +41,16 @@ Once, in this order. The commands name who runs them, and where.
### 1. The Storage Box (you, in Hetzner Console) ### 1. The Storage Box (you, in Hetzner Console)
1. Order a Storage Box (BX11, 1 TB, is plenty) in any location; its main login and 1. Create a Storage Box (BX11, 1 TB, is plenty) in any location, with a password, which
password go into your password manager. goes into your password manager. Turn on **SSH Support** (port 23, which restic uses)
2. Turn on **SSH support**. and **External Reachability**: without it, the box only answers inside Hetzner's
3. Set up **automatic snapshots**: daily, at a fixed time, with as many kept as the box network. Samba and WebDAV stay off; FTP and SFTP on port 22 can't be turned off.
2. Set up **automatic snapshots**: daily, at a fixed time, with as many kept as the box
allows (10 on a BX11). allows (10 on a BX11).
4. Add a **sub-account** for this server: its own directory (e.g. `sahaquiel`), SSH 3. Add a **sub-account** for this server: its own directory (e.g. `sahaquiel`), **SSH
support on, every other protocol off, not read-only (restic deletes what it prunes). support** and **External reachability** on, Samba and WebDAV off, not read-only
Note its user name (`uXXXXX-subN`) and password; the password is needed once, below. (restic deletes what it prunes). Note its user name (`uXXXXX-subN`) and password; the
password is needed once, below.
### 2. restic (an admin with sudo, on the server) ### 2. restic (an admin with sudo, on the server)
@ -75,8 +77,8 @@ EOF
Install the key, with the sub-account's password. SSH first shows the box's host key: Install the key, with the sub-account's password. SSH first shows the box's host key:
accept it only if its ED25519 fingerprint is accept it only if its ED25519 fingerprint is
`SHA256:XqONwb1S0zuj5A1CDxpOSuD2hnAArV1A3wKY7Z3sdgM` `SHA256:XqONwb1S0zuj5A1CDxpOSuD2hnAArV1A3wKY7Z3sdgM`, or, for another key type, the one
([Hetzner's list](https://docs.hetzner.com/storage/storage-box/general/)). [Hetzner lists](https://docs.hetzner.com/storage/storage-box/general/) for it.
```sh ```sh
ssh storagebox install-ssh-key <~/.ssh/storagebox.pub ssh storagebox install-ssh-key <~/.ssh/storagebox.pub