43 lines
991 B
Bash
Executable File
43 lines
991 B
Bash
Executable File
#!/bin/sh
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set -eu
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backup_dir=${BACKUP_DIR:-/backups}
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run_backup() {
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umask 077
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mkdir -p "$backup_dir"
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timestamp=$(date +%Y%m%d-%H%M%S)
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target="$backup_dir/cents-$timestamp.dump"
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temporary="$target.tmp"
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trap 'rm -f "$temporary"' EXIT INT TERM
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pg_dump --format=custom --file="$temporary"
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pg_restore --list "$temporary" >/dev/null
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mv "$temporary" "$target"
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trap - EXIT INT TERM
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find "$backup_dir" -maxdepth 1 -type f -name 'cents-*.dump' -mtime +29 -delete
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printf 'Backup created: %s\n' "$target"
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}
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case "${1:-cron}" in
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run)
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run_backup
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;;
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cron)
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cron_dir=/tmp/cents-crontabs
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mkdir -p "$cron_dir"
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printf '%s\n' \
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'0 3 * * * /usr/local/bin/cents-backup run >> /proc/1/fd/1 2>> /proc/1/fd/2' \
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> "$cron_dir/$(id -u)"
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printf 'Backup scheduler started: daily at 03:00 %s, retaining 30 days\n' "${TZ:-local time}"
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exec crond -f -l 2 -c "$cron_dir"
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;;
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*)
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printf 'Unknown command: %s\n' "$1" >&2
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exit 2
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;;
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esac
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