38 lines
1.5 KiB
Bash
Executable File
38 lines
1.5 KiB
Bash
Executable File
#!/usr/bin/env bash
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set -Eeuo pipefail
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archive_path="${1:-}"
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passphrase_file="${DATA_BACKUP_PASSPHRASE_FILE:-}"
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fail() {
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echo "错误：$*" >&2
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exit 2
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}
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[[ -n "${archive_path}" ]] || fail "用法：DATA_BACKUP_PASSPHRASE_FILE=/安全路径/密钥 $0 /备份/mysql-all-*.enc"
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[[ "${archive_path}" == /* && ! -L "${archive_path}" && -f "${archive_path}" ]] || fail "备份必须是现有绝对路径，且不能是符号链接"
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[[ "${passphrase_file}" == /* && ! -L "${passphrase_file}" && -f "${passphrase_file}" && -r "${passphrase_file}" ]] || fail "缺少安全、可读的 DATA_BACKUP_PASSPHRASE_FILE"
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archive_path="$(realpath -e -- "${archive_path}")"
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passphrase_file="$(realpath -e -- "${passphrase_file}")"
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checksum_file="${archive_path}.sha256"
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[[ ! -L "${checksum_file}" && -f "${checksum_file}" ]] || fail "缺少安全的校验文件：${checksum_file}"
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expected="$(awk 'NR==1 {print $1}' "${checksum_file}")"
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[[ "${expected}" =~ ^[0-9a-fA-F]{64}$ ]] || fail "SHA-256校验文件格式错误"
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if command -v sha256sum >/dev/null 2>&1; then
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actual="$(sha256sum "${archive_path}" | awk '{print $1}')"
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else
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actual="$(shasum -a 256 "${archive_path}" | awk '{print $1}')"
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fi
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if [[ "${actual,,}" != "${expected,,}" ]]; then
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echo "备份 SHA-256 校验失败" >&2
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exit 1
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fi
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openssl enc -d -aes-256-cbc -pbkdf2 -iter 200000 \
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-pass "file:${passphrase_file}" -in "${archive_path}" | gzip -t
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echo "备份加密、SHA-256校验和与压缩结构验证通过。"
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echo "生产环境仍应定期恢复到隔离MySQL实例进行完整恢复演练。"
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