infrastructure/ansible/roles/restic/files/backrest.sh

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#!/usr/bin/env bash
set -e
export B2_ACCOUNT_ID="{{ restic_b2_account_id }}"
export B2_ACCOUNT_KEY="{{ restic_b2_account_key }}"
export RESTIC_PASSWORD="{{ restic_key }}"
export RESTIC_REPOSITORY="b2:{{ restic_b2_bucket }}"
export GOGC=20 # HACK: Work around for restic's high memory usage https://github.com/restic/restic/issues/1988
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export RESTIC_LOG_DIR="$HOME/log"
export RESTIC_LOG_FILE="$RESTIC_LOG_DIR/$1-$(date -Iseconds).log"
export FORGET_OPTIONS="--keep-daily 30 --keep-monthly 3 --group-by host"
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mkdir -p "$RESTIC_LOG_DIR"
# Run backup, and capture logs to file
cron_backup() {
curl -fsS -m 10 --retry 5 -o /dev/null {{ healthchecks_host }}/{{ restic_healthchecks_id }}/start
restic --verbose backup --files-from=$HOME/restic-include.txt --exclude-file=$HOME/restic-excludes.txt | tee -a $RESTIC_LOG_FILE
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exit_code=${PIPESTATUS[0]}
curl -fsS -m 10 --retry 5 -o /dev/null {{ healthchecks_host }}/{{ restic_healthchecks_id }}/$exit_code --data-binary "@$RESTIC_LOG_FILE"
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echo "Exit code: $exit_code"
}
# Run backup, but show all the progress
backup() {
restic --verbose backup --files-from=$HOME/restic-include.txt --exclude-file=$HOME/restic-excludes.txt
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}
{% if restic_forget %}
# Run forget and prune, and capture logs to file
cron_forget() {
curl -fsS -m 10 --retry 5 -o /dev/null {{ healthchecks_host }}/{{ restic_forget_healthchecks_id }}/start
restic forget --prune $FORGET_OPTIONS | tee -a $RESTIC_LOG_FILE
exit_code=${PIPESTATUS[0]}
curl -fsS -m 10 --retry 5 -o /dev/null {{ healthchecks_host }}/{{ restic_forget_healthchecks_id }}/$exit_code --data-binary "@$RESTIC_LOG_FILE"
echo "Exit code: $exit_code"
}
{% endif %}
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# Forget legacy snapshots
forget() {
set -x
restic forget $FORGET_OPTIONS $@
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}
# Prune orphaned files
prune() {
set -x
restic --verbose prune $@
}
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# Run restic, but with environment variables set
exec () {
set -x
restic $@
}
# Run the things
"$@"