Initial commit

master
Kuba Orlik 4 years ago
commit 1d83560886

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pass init your-gpg-id
ansible-playbook -i '157.90.240.248,rpi' backup.yml

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---
- hosts: remote_server:rpi
tasks:
- set_fact: RPI_NAME=kuba-rpi
- set_fact: SERVER_NAME=my-server
- set_fact: SERVER_FQDN=my.example.com
- set_fact: OVPN_IP_PREFIX=10.8.10
- set_fact: RPI_BACKUP_DIR=/mnt/hdd/Backups
- hosts: remote_server
become: yes
become_user: root
# become_method: su
vars:
TO_INSTALL:
- openvpn
- restic
- ufw
tasks:
# - include_vars: secrets.yml
- name: install required packages
apt: state=present pkg={{ TO_INSTALL }}
- name: create ovpn key
ansible.builtin.command: "openvpn --genkey --secret {{RPI_NAME}}.key"
args:
chdir: /etc/openvpn/server
creates: /etc/openvpn/server/{{RPI_NAME}}.key
- name: Copy /etc/openvpn/server/{{RPI_NAME}}.key to /tmp/{{RPI_NAME}}.key
ansible.builtin.fetch:
src: /etc/openvpn/server/{{RPI_NAME}}.key
dest: /tmp/{{RPI_NAME}}.key
flat: yes
- name: Create ovpn config
ansible.builtin.template:
src: "ovpn-server.conf.j2"
dest: /etc/openvpn/server/{{RPI_NAME}}.conf
- name: open ovpn port (tcp)
ufw: rule=allow port=1194 proto=tcp
- name: open ovpn port (udp)
ufw: rule=allow port=1194 proto=udp
- name: start ovpn server
ansible.builtin.service:
name: openvpn-server@{{RPI_NAME}}
state: restarted
enabled: yes
- name: rpi in /etc/hosts
ansible.builtin.lineinfile:
path: /etc/hosts
regexp: "rpi$"
line: "{{OVPN_IP_PREFIX}}.2 {{RPI_NAME}}"
owner: root
group: root
mode: "0644"
- name: generate ssh key
ansible.builtin.command: 'ssh-keygen -t ed25519 -b 4096 -C "{{RPI_NAME}}-backup" -f /root/.ssh/{{RPI_NAME}}-backup -N ""'
args:
creates: "/root/.ssh/{{RPI_NAME}}-backup"
- name: Create ssh config for rpi
blockinfile:
path: /root/.ssh/config
backup: yes
create: yes
block: |
Host {{RPI_NAME}}
User {{SERVER_NAME}}-backup
IdentityFile /root/.ssh/{{RPI_NAME}}-backup
- name: download the public key of the server
ansible.builtin.fetch:
src: /root/.ssh/{{RPI_NAME}}-backup.pub
dest: /tmp/{{RPI_NAME}}-backup.pub
flat: yes
- name: create backup password
ansible.builtin.command: dd if=/dev/urandom of=/backup-pwd bs=1 count=52
args:
creates: /backup-pwd
- shell: base64 < /backup-pwd
register: shell_result
- debug: msg="{{shell_result.stdout_lines}}"
- name: Remind to backup the key
pause:
prompt: ZAPISZ TEN KLUCZ W MANADŻERZE HASEŁ ☝ i wciśnij ENTER
# - name: initiate restic reposiotory
# command: restic init --password-file=/backup-pwd -r sftp:{{SERVER_NAME}}-backup@{{RPI_NAME}}:data
# run_once: true
- name: Create the backup script
ansible.builtin.template:
src: "backup.sh.j2"
dest: /root/backup.sh
mode: u+rwx
backup: yes
- name: setup CRON
ansible.builtin.cron:
name: "nightly backup for {{SERVER_NAME}}_{{RPI_NAME}}"
minute: 15
hour: 4
job: "/root/backup.sh"
- hosts: rpi
become: yes
become_user: root
tasks:
- name: Upload /tmp/{{RPI_NAME}}.key to rpi:/etc/openvpn/client/{{SERVER_NAME}}.key
ansible.builtin.copy:
src: /tmp/{{RPI_NAME}}.key
dest: /etc/openvpn/client/{{SERVER_NAME}}.key
- name: Create ovpn config
ansible.builtin.template:
src: "ovpn-client.conf.j2"
dest: /etc/openvpn/client/{{SERVER_NAME}}.conf
- name: start ovpn client
ansible.builtin.service:
name: openvpn-client@{{SERVER_NAME}}
state: restarted
enabled: yes
- name: Add the backup user
ansible.builtin.user:
name: "{{SERVER_NAME}}-backup"
- name: set permissions on backup dir
file:
path: "{{RPI_BACKUP_DIR}}/{{SERVER_NAME}}-backup"
owner: root
group: root
mode: 0755
state: directory
- name: set permissions on backup data dir
file:
path: "{{RPI_BACKUP_DIR}}/{{SERVER_NAME}}-backup/data"
owner: "{{SERVER_NAME}}-backup"
group: "{{SERVER_NAME}}-backup"
mode: 0755
state: directory
- name: auth the backup user with the public key
ansible.builtin.lineinfile:
path: /home/{{SERVER_NAME}}-backup/.ssh/authorized_keys
line: "{{lookup('file', '/tmp/{{RPI_NAME}}-backup.pub')}}"
owner: "{{SERVER_NAME}}-backup"
group: "{{SERVER_NAME}}-backup"
mode: "0600"
create: yes
- name: Create ssh config for the backup user
blockinfile:
path: /etc/ssh/sshd_config
backup: yes
create: yes
block: |
Match User {{SERVER_NAME}}-backup
ForceCommand internal-sftp
PasswordAuthentication yes
ChrootDirectory {{RPI_BACKUP_DIR}}/{{SERVER_NAME}}-backup
PermitTunnel no
AllowAgentForwarding no
AllowTcpForwarding no
X11Forwarding no
- name: restart sshd
ansible.builtin.service:
name: ssh
state: restarted
enabled: yes

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#!/bin/bash
REPO=sftp:{{SERVER_NAME}}-backup@{{RPI_NAME}}:data
PWD_FILE=/backup-pwd
RESTIC=/usr/bin/restic
echo "Removing current backups..."
rm -fr /backup/*
mkdir -p /backup
####### Prepare data
# tutaj wpychamy dane do zbackupowania do /backup.
# nie musimy ich tu wpychać, jeżeli po prostu są na dysku - wystarczy podać je jako argument do pierwszej komendy w sekcji "Send Backups".
# do /backup najlepiej wgrać artefakty, które nie są aktualnie w backupowalnej postaci na dysku, np. dumpy mysql
# przykłady skryptów backupujących dodałem na końcu, w sekcji "bonusy"
###### Send backups
echo "Sending the backup to the destination..."
# podaj tutaj listę katalogów do zbackupowania. Warto backupować katalog `/etc`.
$RESTIC -r "$REPO" --password-file=$PWD_FILE backup /backup /etc /var/phabricator-files /etc/nginx/sites # ... + inne pliki / katalogi
echo "Pruning the backup on the destination..."
# poniższa konfiguracja będzie trzymała backupy z każdego z pięciu ostatnich dni, po jednym backupie dla każdego z ostatnich 10 tygodni, po jednym dla ostatnich 12 miesięcy i po jednym dla ostatnich 100 lat.
$RESTIC -r "$REPO" --password-file=$PWD_FILE forget --prune --keep-daily 5 --keep-weekly 10 --keep-monthly 12 --keep-yearly 100

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remote {{SERVER_FQDN}}
dev tun
ifconfig {{OVPN_IP_PREFIX}}.2 {{OVPN_IP_PREFIX}}.1
secret {{SERVER_NAME}}.key
keepalive 10 60
ping-timer-rem
persist-tun
persist-key
log-append /var/log/openvpn-{{SERVER_NAME}}.log

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dev tun
ifconfig {{OVPN_IP_PREFIX}}.1 {{OVPN_IP_PREFIX}}.2
secret {{RPI_NAME}}.key
keepalive 10 60
ping-timer-rem
persist-tun
persist-key
log-append /var/log/openvpn-{{RPI_NAME}}.log

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Host {{RPI_NAME}}
User {{SERVER_NAME}}-backup
IdentityFile /root/.ssh/{{RPI_NAME}}-backup
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