Docker container for barman

This container also provides:

• openvpn
• ssh server
• exim4

to connect to the target databases via openvpn and send mail notifications.

Configuration

Configuration files, log files, buisness data

The following directories can be loaded from the host to keep the data and configuration files out of the container:

PATH in container	Description
/etc/barman.d	Directory of all barman configurations. If this directory is empty on start a default barman configuration is provided.
/etc/barman.conf (File)	Main Barmanc Configuration. If the file does not exist on start a default barman configuration file is provided.
/etc/openvpn/	Directory of the openvpn configuration files.
/etc/ssh/	Directory of the ssh server configuration. If this directory is empty on start a default ssh server configuration is provided.
/etc/exim4/update-exim3.conf.conf	exim4 configuration file
/etc/exim4/password.client	exim4 credentials file
/var/log	Logging directory
/var/lib/barman	Storage directroy of barman
/var/spool/cron/crontabs	Directory of cronfiles to automatically start barman jobs

Container Tags

Tag name	Description
latest	Latest stable version of the container
stable	Latest stable version of the container
dev	latest development version of the container. Do not use in production environments!

Usage

To run the container and store the data and configuration on the local host run the following commands:

1. Create storage directroy for the configuration files, log files and data. Also create a directroy to store the necessary script to create the docker container and replace it (if not using eg. watchtower)

mkdir /srv/docker/barman
mkdir /srv/docker-config/barman

2. Exim4 configuration For barman to send mails exim4 is used. Create the following file:

touch /srv/docker/barman/etc/exim4/update-exim3.conf.conf

Add the following content:

# /etc/exim4/update-exim4.conf.conf
dc_eximconfig_configtype='satellite'
dc_other_hostnames='localhost'
dc_local_interfaces='127.0.0.1'
dc_readhost='localhost'
dc_relay_domains=''
dc_minimaldns='false'
dc_relay_nets=''
dc_smarthost='mx.example.domain'
CFILEMODE='644'
dc_use_split_config='true'
dc_hide_mailname='true'
dc_mailname_in_oh='true'
dc_localdelivery='mail_spool'

Change the parameter "dc_smarthost" to target your mailserver to use.

3. Create password file for exim for mail delivery

touch /srv/docker/barman/etc/exim4/password.client

Add the following content:

mx.example.domain:user:passwd

Adopt mx.example.domain to target your mailserver and change user and passwd to the username and password to use for the authentication with the mailserver.

4. Create the docker container and configure the docker networks for the container. I always create a script for that and store it under

touch /srv/docker-config/barman/create.sh

Content of create.sh:

#!/bin/bash

docker pull foxcris/docker-barman
docker create\
 --restart always\
 --name barman\
 --volume "/srv/docker/barman/etc/barman.d:/etc/barman.d"\
 --volume "/srv/docker/barman/etc/barman.conf:/etc/barman.conf"\
 --volume "/srv/docker/barman/etc/openvpn:/etc/openvpn"\
 --volume "/srv/docker/barman/etc/ssh:/etc/ssh"\
 --volume "/srv/docker/barman/etc/exim4/update-exim3.conf.conf:/etc/exim4/update-exim3.conf.conf"\
 --volume "/srv/docker/barman/etc/exim4/password.client:/etc/exim4/password.client"\
 --volume "/srv/docker/barman/var/log:/var/log"\
 --volume "/srv/docker/barman/var/lib/barman:/var/lib/barman"\
 --volume "/srv/docker/barman/var/spool/cron/crontabs:/var/spool/cron/crontabs"\
 foxcris/docker-barman

5. Create replace.sh to install/update the container. Store it in

touch /srv/docker-config/barman/replace.sh

#/bin/bash
docker stop barman
docker rm barman
./create.sh
docker start barman