Refactor and restore function to backup script
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parent
fa7af91461
commit
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175
backup.sh
175
backup.sh
@ -2,9 +2,10 @@
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set -e
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CYAN='\033[01;36m'
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YELLOW='\033[01;33m'
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RED='\033[01;31m'
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GREEN='\033[01;32m'
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YELLOW='\033[01;33m'
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CYAN='\033[01;36m'
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NC='\033[00m'
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SCRIPT=$(readlink -f $0)
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@ -14,63 +15,155 @@ DIRNAME=$(dirname $SCRIPT)
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# Get the list of volumes.
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# -----------------------------------------------------------------------------
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echo -e "${CYAN}[${SCRIPT}] Extract list of volumes ${NC}"
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function get_volumes {
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# Find the line where "services:" start
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services_line=$(grep -n services docker-compose.yml | awk '{split($0, a, ":"); print a[1]}')
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# Find the line where "services:" start
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services_line=$(grep -n services docker-compose.yml | \
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awk '{split($0, a, ":"); print a[1]}')
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# The volumes are listed between "volumes:" and "services:"
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volume_list=$(head -n $services_line docker-compose.yml | awk '/volumes:/,/services:/')
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# The volumes are listed between "volumes:" and "services:"
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volume_list=$(head -n $services_line docker-compose.yml | \
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awk '/volumes:/,/services:/')
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# Split into array
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IFS=':'; volumes=($volume_list); unset IFS;
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# Split into array
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IFS=':'; volumes=($volume_list); unset IFS;
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# Trim whitespace
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for ((i = 0; i < ${#volumes[@]}; i++)); do
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volumes[$i]=$(echo -e "${volumes[$i]}" | tr -d '[:space:]')
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done
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# Trim whitespace
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for ((i = 0; i < ${#volumes[@]}; i++)); do
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volumes[$i]=$(echo -e "${volumes[$i]}" | tr -d '[:space:]')
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done
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# Verify that the first entry is "volumes" and the last "services"
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if [ ${volumes[0]} != "volumes" ] || [ "${volumes[-1]}" != "services" ]; then
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echo -e "${RED}Unexpected input${NC}" >&2
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exit 1
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fi
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# Verify that the first entry is "volumes" and the last "services"
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if [ ${volumes[0]} != "volumes" ] || [ "${volumes[-1]}" != "services" ]
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then
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echo -e "${RED}Unexpected input${NC}" >&2
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exit 1
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fi
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# Remove first and last entry - they will be "volumes" and " services"
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let len=${#volumes[@]}-2
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volumes=("${volumes[@]:1:$len}")
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# Remove first and last entry - they will be "volumes" and " services"
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let len=${#volumes[@]}-2
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volumes=("${volumes[@]:1:$len}")
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# Print final list
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echo -e "${YELLOW}Volumes${NC}:"
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for vol in "${volumes[@]}"; do
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echo -e " - ${YELLOW}${vol} ${NC}"
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done
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echo ${volumes[*]}
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}
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# -----------------------------------------------------------------------------
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# Start the server.
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# -----------------------------------------------------------------------------
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function server_start {
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echo -e "${CYAN}[${SCRIPT}] Restart loki-server ${NC}"
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service loki-server start
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}
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# -----------------------------------------------------------------------------
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# Stop the server.
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# -----------------------------------------------------------------------------
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echo -e "${CYAN}[${SCRIPT}] Stop loki-server ${NC}"
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function server_stop {
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service loki-server stop
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echo -e "${CYAN}[${SCRIPT}] Stop loki-server ${NC}"
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service loki-server stop
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}
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# -----------------------------------------------------------------------------
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# Back up volumes.
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# -----------------------------------------------------------------------------
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for vol in "${volumes[@]}"; do
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echo -e "${CYAN}[${SCRIPT}] Back up ${YELLOW}${vol}${CYAN} volume ${NC}"
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function backup {
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set -o xtrace
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docker run --rm -v loki_${vol}:/opt/${vol} -v /srv/backup:/opt/backup debian:stable-slim bash -c \
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"cd /opt/${vol} && tar cf /opt/backup/${vol}.tar ."
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set +o xtrace
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volumes=$1
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for vol in "${volumes[@]}"
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do
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echo -e "${CYAN}[${SCRIPT}] Back up ${YELLOW}${vol}${CYAN} volume${NC}"
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set -o xtrace
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docker run --rm \
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-v loki_${vol}:/opt/${vol} \
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-v /srv/backup:/opt/backup \
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debian:stable-slim \
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bash -c "cd /opt/${vol} && tar cf /opt/backup/${vol}.tar ."
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set +o xtrace
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done
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}
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# -----------------------------------------------------------------------------
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# Restore volumes.
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# -----------------------------------------------------------------------------
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function restore {
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volumes=$1
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for vol in "${volumes[@]}"
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do
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echo -e "${CYAN}[${SCRIPT}] Restore ${YELLOW}${vol}${CYAN} volume${NC}"
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set -o xtrace
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docker run --rm \
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-v loki_${vol}:/opt/${vol} \
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-v /srv/backup:/opt/backup \
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debian:stable-slim \
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bash -c "cd /opt/${vol} && tar xf /opt/backup/${vol}.tar"
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set +o xtrace
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done
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}
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# -----------------------------------------------------------------------------
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# Main.
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# -----------------------------------------------------------------------------
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while getopts "br" option
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do
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case ${option} in
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b )
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echo -e "${CYAN}[${SCRIPT}] Extract list of volumes ${NC}"
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volumes=($(get_volumes))
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echo -e "${YELLOW}Volumes${NC}:"
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for vol in "${volumes[@]}"
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do
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echo -e " - ${YELLOW}${vol} ${NC}"
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done
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server_stop
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backup ${volumes}
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server_start
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exit 0
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;;
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r )
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echo -e "${CYAN}[${SCRIPT}] Extract list of volumes ${NC}"
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volumes=($(get_volumes))
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echo -e "${YELLOW}Volumes${NC}:"
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for vol in "${volumes[@]}"
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do
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echo -e " - ${YELLOW}${vol} ${NC}"
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done
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server_stop
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restore ${volumes}
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server_start
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exit 0
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;;
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\? )
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echo -e "${GREEN} Usage: backup.sh [-b|-r]${NC}"
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exit 1
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;;
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esac
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done
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# -----------------------------------------------------------------------------
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# Restart the server.
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# -----------------------------------------------------------------------------
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echo -e "${CYAN}[${SCRIPT}] Restart loki-server ${NC}"
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service loki-server start
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# If we get here then no options were triggered
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echo -e "${GREEN} Usage: backup.sh [-b|-r]${NC}"
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