Dumps, compresses, encrypts, transfers, and rotates Rancher backups to/on Amazon S3.

rancher

#! /bin/bash

# Dumps, compresses, encrypts, transfers, and rotates Rancher backups to/on Amazon S3.


# Requirements:
#
#   1. Docker
#
#       $ curl -fsSL https://get.docker.com/ | sh
#
#   2. Rancher
#
#       $ docker run -d                      \
#           --name=rancher                   \
#           --restart=always                 \
#           -v /var/lib/mysql:/var/lib/mysql \
#           -p 8080:8080                     \
#           rancher/server:stable
#
#   3. s3cmd
#
#       $ apt-get install python-pip
#       $ pip install s3cmd
#       $ s3cmd --configure
#
#   3. gpg public key


# Installation:
#
#   1. Place this script in
#
#       /usr/local/bin/backup
#
#   2. Make this script executable
#
#       $ chmod a+x /usr/local/bin/backup
#
#   3. Optional: Add to crontab (`0 0 * * * /usr/local/bin/backup`)
#
#       $ crontab -e


# Usage:
#
#   $ /usr/local/bin/backup (or just `backup` if in $PATH)


# Usage (Restore):
#
#   $ docker exec -i rancher mysql < 123456.dump
#   $ docker restart rancher



### BEGIN CONFIGURATION



bucket=my-s3-bucket

bucket_path=s3-bucket-path

gpg_public_key=me@example.com

keep=7



### END CONFIGURATION



export PATH=/usr/local/bin:$PATH

container=rancher

backup_path=/var/backups/rancher

backup_file=`date +%s`.dump.gz.gpg

mkdir -p $backup_path

echo "Dumping, compressing, encrypting and transfering database to S3"
docker exec -i $container mysqldump -A \
  | gzip \
  | gpg -e -r $gpg_public_key \
  | s3cmd put - s3://$bucket/$bucket_path/$backup_file

echo "Rotating backups on S3 (keep $keep latest backups)"
s3cmd ls s3://$bucket/$bucket_path/ \
  | grep -e gpg$ \
  | awk '{print $4}' \
  | head -n -$keep \
  | xargs s3cmd del