cjones/restic-automatic-backup-scheduler
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Multiple profile configuration (#45)

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Adds possibility to have multiple profiles with different backup paths, retention etc.

Co-authored-by: Matt Feifarek <matt.feifarek@gmail.com>
Co-authored-by: Erik Westrup <erik.westrup@gmail.com>
This commit is contained in:
Gerard Bosch
2022-02-01 10:09:36 +01:00
committed by GitHub
parent 16dbe699ab
commit d8f25cdf88
16 changed files with 221 additions and 105 deletions
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usr/local/sbin/restic_backup.sh
+22 -35
View File
@@ -1,9 +1,15 @@
#!/usr/bin/env bash
# Make backup my system with restic to Backblaze B2.
# This script is typically run by: /etc/systemd/system/restic-backup.{service,timer}
# Make a backup with restic to Backblaze B2.
#
# This script is typically run (as root user) either like:
# - from restic service/timer: $PREFIX/etc/systemd/system/restic-backup.{service,timer}
# - from a cronjob: $PREFIX/etc/cron.d/restic
# - manually by a user. For it to work, the environment variables must be set in the shell where this script is executed
# $ source $PREFIX/etc/default.env
# $ restic_backup.sh
# Exit on failure, pipe failure
set -e -o pipefail
# Exit on error, unset var, pipe failure
set -euo pipefail
# Clean up lock if we are killed.
# If killed by systemd, like $(systemctl stop restic), then it kills the whole cgroup and all it's subprocesses.
@@ -15,39 +21,20 @@ exit_hook() {
}
trap exit_hook INT TERM
# How many backups to keep.
RETENTION_DAYS=14
RETENTION_WEEKS=16
RETENTION_MONTHS=18
RETENTION_YEARS=3
# What to backup, and what to not
BACKUP_PATHS="/ /boot /home"
# Example below of how dynamically add a path that is mounted e.g. external USB dis.
[ -d /mnt/media ] && BACKUP_PATHS+=" /mnt/media"
# Set up exclude files: global + path-specific ones.
BACKUP_EXCLUDES="--exclude-file /etc/restic/backup_exclude"
for dir in /home/*
do
if [ -f "$dir/.backup_exclude" ]
then
BACKUP_EXCLUDES+=" --exclude-file $dir/.backup_exclude"
# Set up exclude files: global + path-specific ones
# NOTE that restic will fail the backup if not all listed --exclude-files exist. Thus we should only list them if they are really all available.
## Global backup configuration.
exclusion_args="--exclude-file ${RESTIC_BACKUP_EXCLUDE_FILE}"
## Self-contained backup files per backup path. E.g. having an USB disk at /mnt/media in BACKUP_PATHS,
# a file /mnt/media/.backup_exclude will automatically be detected and used:
for backup_path in ${BACKUP_PATHS[@]}; do
if [ -f "$backup_path/.backup_exclude" ]; then
exclusion_args+=" --exclude-file $backup_path/.backup_exclude"
fi
done
BACKUP_TAG=systemd.timer
# Set all environment variables like
# B2_ACCOUNT_ID, B2_ACCOUNT_KEY, RESTIC_REPOSITORY etc.
source /etc/restic/b2_env.sh
# How many network connections to set up to B2. Default is 5.
B2_CONNECTIONS=50
# NOTE start all commands in background and wait for them to finish.
# Reason: bash ignores any signals while child process is executing and thus my trap exit hook is not triggered.
# Reason: bash ignores any signals while child process is executing and thus the trap exit hook is not triggered.
# However if put in subprocesses, wait(1) waits until the process finishes OR signal is received.
# Reference: https://unix.stackexchange.com/questions/146756/forward-sigterm-to-child-in-bash
@@ -64,7 +51,7 @@ restic backup \
--one-file-system \
--tag $BACKUP_TAG \
--option b2.connections=$B2_CONNECTIONS \
$BACKUP_EXCLUDES \
$exclusion_args \
$BACKUP_PATHS &
wait $!
@@ -75,7 +62,7 @@ restic forget \
--verbose \
--tag $BACKUP_TAG \
--option b2.connections=$B2_CONNECTIONS \
--prune \
--prune \
--group-by "paths,tags" \
--keep-daily $RETENTION_DAYS \
--keep-weekly $RETENTION_WEEKS \
usr/local/sbin/restic_check.sh
+2 -8
View File
@@ -1,6 +1,6 @@
#!/usr/bin/env bash
# Check my backup with restic to Backblaze B2 for errors.
# This script is typically run by: /etc/systemd/system/restic-check.{service,timer}
# Check the backups made with restic to Backblaze B2 for errors.
# See restic_backup.sh on how this script is run (as it's analogous for this script).
# Exit on failure, pipe failure
set -e -o pipefail
@@ -15,12 +15,6 @@ exit_hook() {
}
trap exit_hook INT TERM
source /etc/restic/b2_env.sh
# How many network connections to set up to B2. Default is 5.
B2_CONNECTIONS=50
# Remove locks from other stale processes to keep the automated backup running.
# NOTE nope, don't unlock like restic_backup.sh. restic_backup.sh should take precedence over this script.
#restic unlock &