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better backups

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This commit is contained in:
Ludwig Lehnert
2026-03-17 10:04:50 +01:00
parent 029488b80d
commit 6da6db6955
5 changed files with 564 additions and 117 deletions
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36
app/init.sh
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@@ -62,6 +62,17 @@ derive_netbios_name() {
export NETBIOS_NAME="${cleaned_name:0:15}"
}
derive_backup_start_hour() {
local raw_hour="${BACKUP_START_HOUR:-2}"
if [[ "$raw_hour" =~ ^[0-9]+$ ]] && (( raw_hour >= 0 && raw_hour <= 23 )); then
printf '%d\n' "$raw_hour"
return
fi
log "Invalid BACKUP_START_HOUR '${raw_hour}', defaulting to 2."
printf '2\n'
}
resolve_sid_to_group() {
local sid="$1"
local resolved_name=""
@@ -159,9 +170,22 @@ write_runtime_env_file() {
printf 'export DOMAIN_USERS_GROUP=%q\n' "$DOMAIN_USERS_GROUP"
printf 'export DOMAIN_ADMINS_GROUP=%q\n' "$DOMAIN_ADMINS_GROUP"
printf 'export FSLOGIX_GROUP=%q\n' "$FSLOGIX_GROUP"
printf 'export BACKUP_START_HOUR=%q\n' "$BACKUP_START_HOUR"
if [[ -n "${BACKUP_DESTINATION:-}" ]]; then
printf 'export BACKUP_DESTINATION=%q\n' "$BACKUP_DESTINATION"
fi
if [[ -n "${BACKUP_RETENTION_DAILY:-}" ]]; then
printf 'export BACKUP_RETENTION_DAILY=%q\n' "$BACKUP_RETENTION_DAILY"
fi
if [[ -n "${BACKUP_RETENTION_WEEKLY:-}" ]]; then
printf 'export BACKUP_RETENTION_WEEKLY=%q\n' "$BACKUP_RETENTION_WEEKLY"
fi
if [[ -n "${BACKUP_RETENTION_MONTHLY:-}" ]]; then
printf 'export BACKUP_RETENTION_MONTHLY=%q\n' "$BACKUP_RETENTION_MONTHLY"
fi
if [[ -n "${BACKUP_RETENTION_YEARLY:-}" ]]; then
printf 'export BACKUP_RETENTION_YEARLY=%q\n' "$BACKUP_RETENTION_YEARLY"
fi
if [[ -n "${JOIN_USER:-}" ]]; then
printf 'export JOIN_USER=%q\n' "$JOIN_USER"
fi
@@ -216,8 +240,8 @@ PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
EOF
if [[ -n "${BACKUP_DESTINATION:-}" ]]; then
cat >> /etc/cron.d/reconcile-shares <<'EOF'
*/30 * * * * root source /app/runtime.env && /usr/bin/python3 /app/backup_to_destination.py >> /var/log/backup.log 2>&1
cat >> /etc/cron.d/reconcile-shares <<EOF
0 ${BACKUP_START_HOUR} * * * root source /app/runtime.env && /usr/bin/python3 /app/backup_to_destination.py >> /var/log/backup.log 2>&1
EOF
fi
@@ -231,6 +255,7 @@ require_env DOMAIN_USERS_SID
require_env DOMAIN_ADMINS_SID
export REALM WORKGROUP DOMAIN
export BACKUP_START_HOUR="$(derive_backup_start_hour)"
export FSLOGIX_GROUP_SID="${FSLOGIX_GROUP_SID:-${DOMAIN_USERS_SID}}"
export DOMAIN_USERS_GROUP="${DOMAIN_USERS_SID}"
export DOMAIN_ADMINS_GROUP="${DOMAIN_ADMINS_SID}"
@@ -266,12 +291,9 @@ log 'Running startup reconciliation'
python3 /app/reconcile_shares.py
if [[ -n "${BACKUP_DESTINATION:-}" ]]; then
log 'Running startup backup'
if ! python3 /app/backup_to_destination.py; then
log 'Startup backup failed; continuing service startup.'
fi
log "Backups enabled: daily at ${BACKUP_START_HOUR}:00 (container local time)."
else
log 'BACKUP_DESTINATION is unset; startup backup skipped'
log 'BACKUP_DESTINATION is unset; scheduled backup disabled'
fi
install_cron_job