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Run restic unlock before backup, fix shellcheck

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This commit is contained in:
Filip Pytloun
2023-04-20 09:32:42 +02:00
parent 0d327f89b0
commit 895db38e2a
1 changed files with 35 additions and 11 deletions
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46
backup.sh Normal file → Executable file
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@@ -1,34 +1,58 @@
#!/bin/sh -e
BACKUP_PATH=${BACKUP_PATH:-$1}
INSTANCE="$(echo ${INSTANCE:-${TAG}} | envsubst)"
INSTANCE="$(echo "${INSTANCE:-${TAG}}" | envsubst)"
KEEP_ARGS=${KEEP_ARGS:-"--keep-hourly 12 --keep-daily 7 --keep-monthly 3"}
export RESTIC_REPOSITORY="$(echo ${RESTIC_REPOSITORY} | envsubst)"
RESTIC_REPOSITORY="$(echo "${RESTIC_REPOSITORY}" | envsubst)"
export RESTIC_REPOSITORY
echo -n > /tmp/metrics
PUSHGATEWAY_URL=${PUSHGATEWAY_URL:-"http://prometheus-pushgateway.monitoring.svc.cluster.local:9091"}
log_info() {
echo "[INFO] $*"
}
log_warn() {
echo "[WARN] $*" >&2
}
echo > /tmp/metrics
ts_start=$(date +%s)
log_info "Initializing restic"
ts=$(date +%s)
restic cat config >/dev/null || restic init
restic cat config >/dev/null || {
log_warn "Repository ${RESTIC_REPOSITORY} does not exist, creating";
restic init;
}
echo "restic_init_duration $(echo "$(date +%s) - $ts" | bc)" >> /tmp/metrics
log_info "Cleaning stale locks"
ts=$(date +%s)
restic backup --verbose --tag ${TAG} ${BACKUP_PATH}
restic unlock
echo "restic_unlock_duration $(echo "$(date +%s) - $ts" | bc)" >> /tmp/metrics
log_info "Running restic backup"
ts=$(date +%s)
restic backup --verbose --tag "${TAG}" "${BACKUP_PATH}"
echo "restic_backup_duration $(echo "$(date +%s) - $ts" | bc)" >> /tmp/metrics
log_info "Cleaning up old snapshots"
ts=$(date +%s)
restic forget --prune --tag ${TAG} -g paths,tags ${KEEP_ARGS}
restic forget --prune --tag "${TAG}" -g paths,tags "${KEEP_ARGS}"
echo "restic_forget_duration $(echo "$(date +%s) - $ts" | bc)" >> /tmp/metrics
# Metrics
log_info "Collecting metrics"
ts=$(date +%s)
restic stats --json latest > /tmp/stats.json
restic snapshots --json latest > /tmp/snapshots.json
restic stats --json latest | tee /tmp/stats.json
restic snapshots --json latest | tee /tmp/snapshots.json
echo "restic_stats_duration $(echo "$(date +%s) - $ts" | bc)" >> /tmp/metrics
echo "restic_total_duration $(echo "$(date +%s) - $ts_start" | bc)" >> /tmp/metrics
cat /tmp/stats.json | jq -r '"restic_stats_total_size_bytes \(.total_size)\nrestic_stats_total_file_count \(.total_file_count)"' >> /tmp/metrics
cat /tmp/snapshots.json | jq -r 'max_by(.time) | .time | sub(".[0-9]+Z$"; "Z") | fromdate | "restic_stats_last_snapshot_timestamp \(.)"' >> /tmp/metrics
cat /tmp/metrics | curl --data-binary @- "http://prometheus-pushgateway.monitoring.svc.cluster.local:9091/metrics/job/backup/instance/${INSTANCE}"
log_info "Sending metrics to pushgateway"
jq -r '"restic_stats_total_size_bytes \(.total_size)\nrestic_stats_total_file_count \(.total_file_count)"' < /tmp/stats.json >> /tmp/metrics
jq -r 'max_by(.time) | .time | sub(".[0-9]+Z$"; "Z") | fromdate | "restic_stats_last_snapshot_timestamp \(.)"' < /tmp/snapshots.json >> /tmp/metrics
curl --data-binary @- "${PUSHGATEWAY_URL}/metrics/job/backup/instance/${INSTANCE}" < /tmp/metrics