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Short Description
rsnapshot service based on Alpine linux
Full Description

rsnapshot Service

rsnapshot service based on Alpine linux

This container runs a cron task and configures the rsnapshot service. There is also an sssmtp service that allows for sending emails from the container.

To run a server

The basic format is:

docker run -d \
--name snappy \
neiltheblue/rsnapshotservice \

To see the available options run:

docker run -ti neiltheblue/rsnapshotservice -help
    -create     create the snapshot directory if not exists.
    -hour <int> the number of hourly backups.
    -day <int>  the nubmer of day backups.
    -week <int> the number of week backups.
    -month <int>  the number of month backups.
    -ssha <arg> ssh args.
    -dua <arg>  du args.
    -onefs      stick to one file system.
    -exc <pat>  exclude pattern.
    -inc <pat>  include pattern.
    -sync       pre sync flag.
    -lazy       lazy delete.
    -retry <int>  retry count.
    -backup <type>|<src>|<dest> a backup definition.
    -help       this info.

An example run may look like this:

docker run -d \
--name snappy \
-v <local snapshot volume>:/snapshots \
-v <local key store>:/keys \
-v <local snapshot volume>:/snapshots \
neiltheblue/rsnapshotservice \
-hour 6 \
-day  7 \
-week 2 \
-month 1 \
-backup  'backup|/backupfiles|local' \
<other options>
  • The snapshots are stored on the host with -v <local snapshot volume>:/snapshots. The -create option is not set to the backups will only work when a /snapshots volume is mounted.
  • When a volume is mounted to /keys then the content of the directory is copied to /root/.ssh in the container and used as the source for ssh calls. The keys will be chmod'ed to 600 and chown'ed by root:root in the container.
  • In this example the local host data is backed up through being made availabe to the container with: -v <local snapshot volume>:/snapshots

The generate config file can see seen in the container logs:

docker logs -f snappy

SSMTP support

Any environment settings starting with SSMTP_ wil be added to the ssmtp.conf file. This exmple sends emails for ids<1000 to a gmail account:

docker run -d \
--name snappy \
-e \
-e \
-e SSMTP_hostname=thishost \
-e SSMTP_FromLineOverride=NO \
-e \
-e SSMTP_AuthPass=mypass \

You can test this in a runing container with:

docker exec -ti snappy /bin/bash

Then enter:

sendmail root

This will send a test email to your specified gmail account.

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