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https://github.com/m7a/lp-trivial-automatic-update

Automatic Update Script for Debian systems
https://github.com/m7a/lp-trivial-automatic-update

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Automatic Update Script for Debian systems

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README 

        
---

section: 32

x-masysma-name: trivial_automatic_update

title: Trivial Automatic Update

date: 2020/08/21 22:24:45

lang: en-US

author: ["Linux-Fan, Ma_Sys.ma ([email protected])"]

keywords: ["mdvl", "debian", "update", "automatic", "package"]

x-masysma-version: 1.0.0

x-masysma-repository: https://www.github.com/m7a/lp-trivial-automatic-update

x-masysma-website: https://masysma.net/32/trivial_automatic_update.xhtml

x-masysma-owned: 1

x-masysma-copyright: |

  Copyright (c) 2020 Ma_Sys.ma.

  For further info send an e-mail to [email protected].

---

Description

===========



Package `mdvl-trivial-automatic-update` supplies a systemd timer for

periodically invoking `unattended-upgrades` and permits multiple mirrors where

the first one to be online is chosen. This allows upgrading a server from a

local mirror which is preferred if it is online but allows running on another

mirror for fallback.



To use a mirror depending on which is online, `/etc/apt/sources.list` is

temporarily replaced with a script-created one before invoking the actual

`unattended-upgrades`.



Compilation and Installation

============================



The package can be generated by calling `ant package` on a Debian system with

the necessary tools to build packages and `ant` installed. Alternatively, the

repository for [megasync(32)](megasync.xhtml) includes a compiled version of

this package:

.



Installation can be performed with apt as follows:



	# apt install ./mdvl-trivial-automatic-update*all.deb



Afterwards, the update process can be enabled by calling



	# systemctl enable mdvl-trivial-automatic-update.timer



If you want to test how it runs before enabling the timer, run



	# systemctl start mdvl-trivial-automatic-update.service



and then check the outputs of



	# systemctl status mdvl-trivial-automatic-update.service

	# journalctl -u mdvl-trivial-automatic-update.service



Configuration

=============



The package is configured by file `/etc/ma_trivial_automatic_update.conf` which

looks as follows:



	# This configuration is sourced by

	# /usr/local/bin/ma_trivial_automatic_update

	# MIRRORLIST: space-separated list of mirror addresses to check.

	MIRRORLIST="192.168.1.16 ftp.de.debian.org"

	# USE_LTS: if 1 disable version-update line.

	USE_LTS=0



Two settings are available:



`MIRRORLIST`

:   Lists all mirrors to consult. The first one listed is preferred.

    In the default configuration, a local mirror is expected to be present

    at `192.168.1.16` and if it is offline, `ftp.de.debian.org` is used instead.



`USE_LTS`

:   This setting can either be 0 or 1 and configures the `sources.list` to use

    for upgrading: Debian LTS does not include support for the

    `RELEASENAME-updates` repository and thus the corresponding lines is only

    generated if `USE_LTS=0` is set.



Files

=====



---------------------------------------  ----------------------------------------------------

`ma_trivial_automatic_update.conf`       Configuration

`mdvl-trivial-automatic-update.service`  Systemd service unit

`mdvl-trivail-automatic-update.timer`    Systemd timer

`ma_trivial_automatic_update`            Checks mirror status and calls `unattended-upgrades`

`build.xml` and `debian-changelog.txt`   Package metadata

---------------------------------------  ----------------------------------------------------



Use cases

=========



Automatic updates are always a little risky and not recommended for systems that

see a large fluctuation in the types of software installed because there,

updates may often introduce problems. For regular Debian stable systems,

however, updates are often stable enough to permit automatic installation.



This package is intended to be used on small, single-purpose servers,

virtual machines and inside containers.