97 lines
2.7 KiB
Bash
Executable File
97 lines
2.7 KiB
Bash
Executable File
#!/bin/sh
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# Purpose {{{
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## Backup data of a Docker container.
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## To do that, the script will :
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## Try to stop the corresponding container (or docker if no related service is found)
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## Make a archive of the container's data to a backup path
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## Clean old backup
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## Restart the container service (or docker.service)
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# }}}
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# How-to use {{{
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## The container and it's data directory should have the same name.
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# }}}
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# Vars {{{
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DEBUG=0
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# }}}
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# Tests {{{
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## Expect at least 1 argument and 3 maximum {{{
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case $# in
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1 )
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ct_name="${1}"
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## Absolut path to the container data
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docker_data_path="/srv/docker"
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## Absolut path to store the archives.
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## A sub-directory will be created for the container
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docker_backup_path="/mnt/backup/docker"
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;;
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2 )
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ct_name="${1}"
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docker_data_path="${2}"
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docker_backup_path="/mnt/backup/docker"
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;;
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3 )
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ct_name="${1}"
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docker_data_path="${2}"
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docker_backup_path="${3}"
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;;
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* )
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cat << HELP
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container.backup --
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Backup data of a given Docker container.
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EXAMPLE :
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- Backup data of FIRST_DOCK container
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container.backup FIRST_DOCK
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HELP
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exit 1
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;;
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esac
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[ "${DEBUG}" -eq "0" ] && printf '\e[1;35m%-6s\e[m\n' "DEBUG : Args management — Container name to backup : ${ct_name} ."
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[ "${DEBUG}" -eq "0" ] && printf '\e[1;35m%-6s\e[m\n' "DEBUG : Args management — Path to Docker data : ${docker_data_path} ."
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[ "${DEBUG}" -eq "0" ] && printf '\e[1;35m%-6s\e[m\n' "DEBUG : Args management — Path to store the backup : ${docker_backup_path} ."
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# }}}
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## Ensure Docker data directory exists {{{
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if [ ! -d "${docker_data_path}" ]; then
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printf '\e[0;31m%-6s\e[m\n' "Docker data directory doesn't seems available : ${docker_data_path} ."
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exit 1
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fi
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## }}}
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## Ensure backup directory exists {{{
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if [ ! -d "${docker_backup_path}" ]; then
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printf '\e[0;31m%-6s\e[m\n' "Backup directory doesn't seems available : ${docker_backup_path} ."
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exit 1
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fi
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## }}}
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## Ensure container data directory exists {{{
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if [ ! -d "${docker_data_path}/${ct_name}" ]; then
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printf '\e[0;31m%-6s\e[m\n' "Container directory doesn't seems available : ${docker_data_path}/${ct_name} ."
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exit 1
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fi
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## }}}
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# }}}
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# Get container service name {{{
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ct_service_name=$(find /etc/systemd -type f -iname "*${ct_name}*.service" -printf "%f\n")
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## If no specific systemd service exists, the docker.service will be used
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if [ "${ct_service_name}" = "" ]; then
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ct_service_name="docker.service"
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[ "${DEBUG}" -eq "0" ] && printf '\e[1;35m%-6s\e[m\n' "DEBUG : Service name — No specific service found for ${ct_name} container, the ${ct_service_name} will be stopped."
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else
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[ "${DEBUG}" -eq "0" ] && printf '\e[1;35m%-6s\e[m\n' "DEBUG : Service name — Service name of the container to backup : ${ct_service_name} ."
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fi
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# }}}
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exit 0
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