.gitignore

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-playbooks/backups
-.idea

ansible.cfg

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-[defaults]
-# look in the roles directory to find our defined roles.
-roles_path = roles

example/docker-compose.yml

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----
-version: '3'
-services:
-  linkding:
-    labels:
-      ie.cianhatton.backup.enabled: "true"
-    container_name: linkding
-    image: sissbruecker/linkding:latest
-    ports:
-      - "9090:9090"
-    volumes:
-      - "data:/etc/linkding/data"
-    restart: unless-stopped
-  minio:
-    image: minio/minio:latest
-    container_name: minio
-    ports:
-      - "9000:9000"
-      - "9001:9001"
-    volumes:
-      - minio_storage:/data
-    environment:
-      MINIO_ROOT_USER: minio
-      MINIO_ROOT_PASSWORD: "*!3^wYe&dJ2H9D9aDC68Gh6!v7ydB^eK5G^"
-      MINIO_API_ROOT_ACCESS: "on"
-      MINIO_BROWSER_REDIRECT_URL: http://127.0.0.1:9000
-
-    command: server --console-address ":9001" /data
-volumes:
-  data:
-  minio_storage:

playbooks/backup-docker-volumes.yml

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----
-- name: Backup Docker Volumes.
-  hosts: localhost
-
-  tasks:
-    - name: Find Containers With Backup Label
-      docker_host_info:
-        containers: true
-        containers_filters:
-          label:
-            - "ie.cianhatton.backup.enabled=true"
-      register: filter_output
-
-    - name: Get Container Names
-      ansible.builtin.set_fact: container_names="{{ filter_output.containers | map(attribute="Names") | flatten }}"
-
-    - name: Backup Containers with backup label
-      ansible.builtin.include_role:
-        name: docker_s3_backup
-      vars:
-        container_backup: "{{ container_item | regex_replace('^\\/', '') }}"
-      with_items: "{{ container_names }}"
-      loop_control:
-        loop_var: container_item

roles/docker_s3_backup/defaults/main.yml

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-# the aws region. For minio this will always be us-east-1.
-docker_backup_aws_s3_region: "us-east-1"
-# the name of the bucket in minio or s3
-docker_backup_aws_s3_bucket: "backups"
-# put backups locally in this directory.
-docker_backup_host_backup_directory: "/tmp"
-# the url of the minio server.
-docker_backup_aws_s3_url: "http://127.0.0.1:9000"
-docker_backup_aws_s3_aws_access_key: "83meItmzcEgb1NdasSgl"
-docker_backup_aws_s3_aws_secret_key: "lwdAJ60gMkcZxRZCHsC6CsdPw63Xuds6h6mksnSz"
-docker_backup_aws_s3_permissions: []
-docker_backup_aws_s3_encrypt: off

roles/docker_s3_backup/tasks/main.yml

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----
-- name: Determine backup timestamp.
-  ansible.builtin.set_fact: backup_time="{{ ansible_date_time.iso8601 }}"
-
-- name: Install Python dependencies
-  ansible.builtin.pip:
-    name:
-      - docker
-      - boto3
-
-- name: Stop a container
-  community.docker.docker_container:
-    name: "{{ container_backup }}"
-    state: stopped
-
-- name: Get container details
-  docker_container_info:
-    name: "{{ container_backup }}"
-  register: result
-
-- name: Extract only the volume mounts (not bind mounts)
-  ansible.builtin.set_fact: volume_mounts="{{ result.container.Mounts | selectattr("Type", "equalto", "volume") }}"
-
-- name: Create Backup of Container Volumes
-  community.docker.docker_container:
-    name: "backup-container-{{ item.Name }}-{{ 10 | random }}"
-    image: ubuntu
-    command: "tar -czvf /backups/{{ item.Name }}-{{ backup_time }}.tar.gz /data"
-    cleanup: true
-    detach: false # block until this container exists.
-    state: started
-    volumes:
-      - "{{ item.Name }}:/data"
-      - "{{ docker_backup_host_backup_directory }}:/backups"
-  with_items: "{{ volume_mounts }}"
-
-- name: Start the container
-  community.docker.docker_container:
-    name: "{{ container_backup }}"
-    state: started
-
-- name: Upload backups to S3
-  register: upload_result
-  amazon.aws.aws_s3:
-    s3_url: "{{ docker_backup_aws_s3_url }}"
-    bucket: "{{ docker_backup_aws_s3_bucket }}"
-    object: "{{ item.Name }}/{{ item.Name }}-{{ backup_time }}.tar.gz"
-    src: "{{ docker_backup_host_backup_directory }}/{{ item.Name }}-{{ backup_time }}.tar.gz"
-    aws_access_key: "{{ docker_backup_aws_s3_aws_access_key }}"
-    aws_secret_key: "{{ docker_backup_aws_s3_aws_secret_key }}"
-    region: "{{ docker_backup_aws_s3_region }}"
-    mode: put
-    encrypt: "{{ docker_backup_aws_s3_encrypt }}"
-    permission: "{{ docker_backup_aws_s3_permissions }}"
-  with_items: "{{ volume_mounts }}"
-
-- name: Remove local files.
-  ansible.builtin.file:
-    path: "{{ docker_backup_host_backup_directory }}/{{ item.Name }}-{{ backup_time }}.tar.gz"
-    state: absent
-  with_items: "{{ volume_mounts }}"