94 lines
2.4 KiB
Bash
Executable File
94 lines
2.4 KiB
Bash
Executable File
#!/bin/bash
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set -eu -o pipefail
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if [[ $EUID -ne 0 ]]; then
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echo "This script should be run as root." >&2
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exit 1
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fi
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if [[ $# == 1 && "$1" == "--check" ]]; then
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echo "OK"
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exit 0
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fi
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# verify argument count
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if [[ "$1" == "s3" && $# -lt 6 ]]; then
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echo "Usage: backupbox.sh s3 <s3 url> <access key id> <access key> <region> <password> [session token]"
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exit 1
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fi
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if [[ "$1" == "filesystem" && $# -lt 4 ]]; then
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echo "Usage: backupbox.sh filesystem <backupFolder> <fileName> <password>"
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exit 1
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fi
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# extract arguments
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if [[ "$1" == "s3" ]]; then
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# env vars used by the awscli
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readonly s3_url="$2"
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export AWS_ACCESS_KEY_ID="$3"
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export AWS_SECRET_ACCESS_KEY="$4"
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export AWS_DEFAULT_REGION="$5"
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readonly password="$6"
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if [ $# -gt 6 ]; then
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export AWS_SESSION_TOKEN="$7"
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fi
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fi
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if [[ "$1" == "filesystem" ]]; then
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readonly backup_folder="$2"
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readonly backup_fileName="$3"
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readonly password="$4"
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fi
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# perform backup
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now=$(date "+%Y-%m-%dT%H:%M:%S")
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BOX_DATA_DIR="${HOME}/data/box"
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box_snapshot_dir="${HOME}/data/snapshots/box-${now}"
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echo "Creating MySQL dump"
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mysqldump -u root -ppassword --single-transaction --routines --triggers box > "${BOX_DATA_DIR}/box.mysqldump"
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echo "Snapshoting backup as backup-${now}"
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btrfs subvolume snapshot -r "${BOX_DATA_DIR}" "${box_snapshot_dir}"
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# will be checked at the end
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try=0
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if [[ "$1" == "s3" ]]; then
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for try in `seq 1 5`; do
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echo "Uploading backup to ${s3_url} (try ${try})"
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error_log=$(mktemp)
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# use aws instead of curl because curl will always read entire stream memory to set Content-Length
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# aws will do multipart upload
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if tar -czf - -C "${box_snapshot_dir}" . \
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| openssl aes-256-cbc -e -pass "pass:${password}" \
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| aws s3 cp - "${s3_url}" 2>"${error_log}"; then
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break
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fi
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cat "${error_log}" && rm "${error_log}"
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done
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fi
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if [[ "$1" == "filesystem" ]]; then
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echo "Storing backup to ${backup_folder}/${backup_fileName}"
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mkdir -p "${backup_folder}"
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tar -czf - -C "${box_snapshot_dir}" . | openssl aes-256-cbc -e -pass "pass:${password}" > "${backup_folder}/${backup_fileName}"
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fi
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echo "Deleting backup snapshot"
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btrfs subvolume delete "${box_snapshot_dir}"
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if [[ ${try} -eq 5 ]]; then
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echo "Backup failed"
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exit 3
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else
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echo "Backup successful"
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fi
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