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Borgmatic Container

Description

A little container I wrote to automate my Borgbackup's using the excellent Borgmatic.

It uses cron to run the backups at a time you can configure in crontab.txt.

Usage

You will need to create crontab.txt and your borgmatic config.yml and mount these files into your /config directory. When the container starts it creates the crontab from /config/crontab.txt and starts crond.

If using remote repositories mount your .ssh to /root/.ssh within the container

Example run command

docker run -d \
  -v /home:/source/home:ro \
  -v /mnt/borg:/repository \
  -v /home/user/.ssh:/root/.ssh \
  -v /srv/borgmatic/config:/config \
  -v /srv/borgmatic/cache:/cache \
  b3vis/borgmatic

Layout

/config

Where you need to create crontab.txt and your borgmatic config.yml

crontab.txt example

In this file set the time you wish for your backups to take place default is 1am every day. In here you can add any other tasks you want ran

0 1 * * * PATH=$PATH:/usr/bin /usr/bin/borgmatic -c /config  -v 1 2>&1

/cache

A non volatile place to store the borg chunk cache

/source

Your data you wish to backup

/repository

Mount your borg backup repository here

/root/.ssh

Mount either your own .ssh here or create a new one with ssh keys in for your remote repo locations

Environment

TZ

You can set TZ to specify a time zone, Europe/Berlin.

Dockerfile

FROM alpine:latest
MAINTAINER b3vis
COPY entry.sh /entry.sh
RUN apk upgrade --no-cache \
    && apk add --no-cache \
    tzdata \
    curl \
    sshfs \
    python3 \
    py3-msgpack \
    ca-certificates \
    openssl-dev \
    lz4-dev \
    musl-dev \
    gcc \
    python3-dev \
    acl-dev \
    linux-headers \
    && pip3 install --upgrade pip \
    && pip3 install --upgrade borgbackup \
    && pip3 install --upgrade borgmatic \
    && mkdir /config /cache /source /repository /root/.ssh\
    && rm -rf /var/cache/apk/* \
    && chmod 755 /entry.sh
VOLUME /config
VOLUME /cache
VOLUME /source
VOLUME /repository
VOLUME /root/.ssh
# Set Envars
ENV BORG_CACHE_DIR /cache
CMD ["/entry.sh"]