Use Fedder's TrueNAS for Restic backups #153

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samsapti merged 8 commits from restic_fedder into main 2023-03-05 22:01:54 +00:00
5 changed files with 216 additions and 149 deletions

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View file

@ -1,6 +1,6 @@
# These are the variables contained in secrets.yml
# Secrets are usually 32 characters or more, matching [a-Z0-9]
---
postgres_passwords:
nextcloud: xxx
passit: xxx
@ -9,6 +9,7 @@ postgres_passwords:
codimd: xxx
mailu: xxx
keycloak: xxx
hedgedoc: xxx
mastodon: xxx
rallly: xxx
membersystem: xxx
@ -31,8 +32,8 @@ drone_secrets:
rpc_shared_secret: xxx
restic_secrets:
user_secret: xxx
encryption_secret: xxx
repository_password: xxx
samsapti marked this conversation as resolved
Review

Do we use this?

Do we use this?
Review

Actually no, we only used it with Decibyte's Restic server. I'll remove it.

Actually no, we only used it with Decibyte's Restic server. I'll remove it.
ssh_privkey: xxx
matrix_secrets:
registration_shared_secret: xxx

View file

@ -49,9 +49,10 @@ services:
restic:
file: restic_backup.yml
user: "datacoop"
domain: "restic.cannedtuna.org"
repository: "datacoop-hevonen"
user: "dc-user"
domain: "rynkeby.skovgaard.tel"
volume_folder: "{{ volume_root_folder }}/restic"
repository: "restic"
version: "1.6.0"
samsapti marked this conversation as resolved Outdated

Can we derive the pubkey from the privkey in secrets? We have to update the key in two places now.

Can we derive the pubkey from the privkey in secrets? We have to update the key in two places now.

We probably could, I'll make the change.

We probably could, I'll make the change.
disabled_in_vagrant: true

View file

@ -1,5 +1,44 @@
# vim: ft=yaml.ansible
---
- name: Create SSH directory
file:
path: "{{ services.restic.volume_folder }}/ssh"
samsapti marked this conversation as resolved Outdated

Shouldn't it be .ssh? Is {{ services.restic.volume_folder }} the $HOME dir of root?

Shouldn't it be `.ssh`? Is `{{ services.restic.volume_folder }}` the `$HOME` dir of root?

No, it evaluates to /docker-volumes/restic/ssh. It doesn't need to be in root's $HOME, and I also think it's better to place it in Restic's folder, since this is the only service that uses it. It also doesn't need to be hidden, since we can bind mount it to a different name inside the container (also this makes it visible with a simple ls).

No, it evaluates to `/docker-volumes/restic/ssh`. It doesn't need to be in root's `$HOME`, and I also think it's better to place it in Restic's folder, since this is the only service that uses it. It also doesn't need to be hidden, since we can bind mount it to a different name inside the container (also this makes it visible with a simple `ls`).
owner: root
samsapti marked this conversation as resolved
Review

It's probably correct seeing what most containers do, but we could confirm it's running as root.

It's probably correct seeing what most containers do, but we could confirm it's running as root.
Review

It's also possible with this location, since mode: '0700' denies read permission for everyone else.

It's also possible with this location, since `mode: '0700'` denies read permission for everyone else.
group: root
mode: '0700'
state: directory
- name: Copy private SSH key
copy:
dest: "{{ services.restic.volume_folder }}/ssh/id_ed25519"
owner: root
group: root
mode: '0600'
content: "{{ restic_secrets.ssh_privkey }}"
- name: Derive public SSH key
shell: >-
ssh-keygen -f {{ services.restic.volume_folder }}/ssh/id_ed25519 -y
> {{ services.restic.volume_folder }}/ssh/id_ed25519.pub
args:
creates: "{{ services.restic.volume_folder }}/ssh/id_ed25519.pub"
- name: Set file permissions on public SSH key
file:
path: "{{ services.restic.volume_folder }}/ssh/id_ed25519.pub"
owner: root
group: root
mode: '0644'
state: touch
- name: Create SSH config
template:
src: restic.ssh.config.j2
dest: "{{ services.restic.volume_folder }}/ssh/config"
owner: root
group: root
mode: '0600'
samsapti marked this conversation as resolved Outdated

Isn't sftp urls sftp://user@host/path/from/root?

Isn't sftp urls `sftp://user@host/path/from/root`?

No, the URL format is actually sftp://user@host[:port]//path/from/root (double slash) or sftp://user@host[:port]/relative/path/to/home, but Restic only requires the URL format in case of a specified port number or an IPv6 address. If not, it only wants the sftp: prefix, followed by the format you would use with scp, sftp:user@host:/path/to/repo.
https://restic.readthedocs.io/en/stable/030_preparing_a_new_repo.html#sftp

No, the URL format is actually `sftp://user@host[:port]//path/from/root` (double slash) or `sftp://user@host[:port]/relative/path/to/home`, but Restic only requires the URL format in case of a specified port number or an IPv6 address. If not, it only wants the `sftp:` prefix, followed by the format you would use with `scp`, `sftp:user@host:/path/to/repo`. https://restic.readthedocs.io/en/stable/030_preparing_a_new_repo.html#sftp
- name: Setup restic backup
docker_compose:
project_name: restic_backup
@ -13,12 +52,12 @@
environment:
RUN_ON_STARTUP: "false"
BACKUP_CRON: "0 30 3 * * *"
RESTIC_REPOSITORY: "rest:https://{{ services.restic.user }}:{{ restic_secrets.user_password }}@{{ services.restic.domain }}/{{ services.restic.repository }}"
RESTIC_REPOSITORY: "sftp:{{ services.restic.user }}@{{ services.restic.domain }}:{{ services.restic.repository }}"
RESTIC_PASSWORD: "{{ restic_secrets.repository_password }}"
RESTIC_BACKUP_SOURCES: "/mnt/volumes"
RESTIC_BACKUP_ARGS: >-
--tag datacoop-volumes
--exclude='*.tmp'
--exclude '*.tmp'
--verbose
RESTIC_FORGET_ARGS: >-
samsapti marked this conversation as resolved Outdated

Same comment as above regarding sftp urls.

Same comment as above regarding sftp urls.
--keep-last 10
@ -27,6 +66,7 @@
--keep-monthly 12
TZ: Europe/Copenhagen
volumes:
- "{{ services.restic.volume_folder }}/ssh:/run/secrets/.ssh:ro"
- /docker-volumes:/mnt/volumes:ro
restic-prune:
@ -34,6 +74,8 @@
environment:
RUN_ON_STARTUP: "false"
PRUNE_CRON: "0 0 4 * * *"
RESTIC_REPOSITORY: "rest:https://{{ services.restic.user }}:{{ restic_secrets.user_password }}@{{ services.restic.domain }}/{{ services.restic.repository }}"
RESTIC_REPOSITORY: "sftp:{{ services.restic.user }}@{{ services.restic.domain }}:{{ services.restic.repository }}"
RESTIC_PASSWORD: "{{ restic_secrets.repository_password }}"
TZ: Europe/copenhagen
volumes:
- "{{ services.restic.volume_folder }}/ssh:/run/secrets/.ssh:ro"

View file

@ -0,0 +1,3 @@
Host {{ services.restic.domain }}
ServerAliveInterval 60
ServerAliveCountMax 240