123 lines
2.8 KiB
Bash
Executable File
123 lines
2.8 KiB
Bash
Executable File
#!/bin/bash
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#set -o xtrace
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set -u
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set -o pipefail
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if [[ $(id -u) -ne "0" ]]; then
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printf "Elevated privileges required\n"
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exit 1
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fi
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UMASK="$(umask)"
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cprompt () {
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if [[ $UNATTENDED == "true" ]]; then
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return;
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fi
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read -r -s -N 1 -p "Press 'Enter' to backup, 'Escape' to skip..."
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if [[ $REPLY != $'\n' ]]; then
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printf "backup skipped!\n"
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return 1
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else
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printf "backup starting.\n"
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fi
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}
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usage () {
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printf "v2b.sh <option> [ <prefix> ]\n"
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printf " <prefix> only backup volumes with this prefix (underscore not required)\n"
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printf " option: k (keep existing backups)\n"
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printf " option: p (remove prefix from tar archive file name\n"
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printf " option: u (unattended backup)\n"
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printf " option: s <address> (send backup directly to remote address via ssh)\n"
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}
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SEND="false"
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ADDR=""
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REMOVE="false"
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KEEP="false"
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UNATTENDED="false"
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OUTPUT=""
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while getopts ':s:pku' OPT; do
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case $OPT in
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s) SEND="true"; ADDR="${OPTARG}"; OUTPUT="${OUTPUT} Option: SEND BACKUPS\n";;
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p) REMOVE="true"; OUTPUT="${OUTPUT} Option: PREFIXES REMOVED\n";;
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k) KEEP="true"; OUTPUT="${OUTPUT} Option: KEEP EXISTING BACKUPS\n";;
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u) UNATTENDED="true"; OUTPUT="${OUTPUT} Option: UNATTENDED BACKUP\n";;
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\?) usage; exit;;
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esac
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done
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shift $((OPTIND -1))
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FOLDER="_vols_"
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if [[ $# > 0 ]]; then
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VOLUMES="$(docker volume ls -q |grep "${1}_")"
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else
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VOLUMES="$(docker volume ls -q)"
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fi
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if [[ -z $VOLUMES ]]; then
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printf "Cannot find volumes spec: ${1}_\n"
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exit 1
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fi
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if [[ -d ${FOLDER} ]]; then
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LASTF="$(ls -d --format=single-column ${FOLDER}* |tail -n1)"
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else
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LASTF="${FOLDER}"
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fi
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USER="$(stat -c '%u' $BASH_SOURCE)"
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INDEX="$((( ${LASTF#${FOLDER}} + 0 )))"
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NEWFL="${FOLDER}$(printf "%05d" $((( ${INDEX} + 1 ))))"
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TEMPF="$(sudo -u \#${USER?err} mktemp -dt -p $PWD _XXXXXXXXXXXXXXX_)"
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for VOL in ${VOLUMES}; do
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if [[ $REMOVE == "true" ]]; then
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if [[ $# > 0 ]]; then
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TAR="${VOL#${1}_}.tar.bz2"
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else
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TAR="${VOL#*_}.tar.bz2"
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fi
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else
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TAR="${VOL}.tar.bz2"
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fi
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printf "\n${VOL} --> ${TEMPF}/${TAR}\n"
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cprompt || continue
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docker run --rm --log-driver none \
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-v "${VOL}:/volume" \
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-v "${TEMPF}:/backup" \
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loomchild/volume-backup backup -v "${TAR}"
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if [[ -f "${TEMPF}/${TAR}" ]]; then
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chmod 600 "${TEMPF}/${TAR}"
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fi
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done
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if [[ -z "$(ls -A ${TEMPF})" ]]; then
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rmdir "${TEMPF}"
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else
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if [[ $KEEP == "true" ]]; then
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mv "${FOLDER}" "${NEWFL}"
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else
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rm -rf "${FOLDER}"
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fi
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if mv "${TEMPF}" "${FOLDER}"; then
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if [[ $SEND == "true" ]]; then
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if [[ $ADDR =~ ":" ]]; then
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if ssh "${ADDR%:*}" "mkdir -p ${ADDR#*:}"; then
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scp "${FOLDER}"/* "${ADDR}"
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fi
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else
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if ssh "${ADDR}" "mkdir -p ${PWD}/_$(hostname -f)_"; then
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scp "${FOLDER}"/* "${ADDR}:${PWD}/_$(hostname -f)_"
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fi
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fi
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fi
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fi
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fi
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set +o xtrace
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