feat: add minecraft backup integration
This commit is contained in:
Michael Reichenbach
parent
b0650c0425
commit
db0e7799e0
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@ -1,11 +1,82 @@
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FROM restic/restic:0.9.6
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FROM alpine AS builder
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RUN apk update && apk add python3 dcron mariadb-client postgresql-client
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RUN mkdir -p /opt
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ARG IMAGE_ARCH=amd64
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ARG RCON_CLI_VERSION=1.4.4
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ADD https://github.com/itzg/rcon-cli/releases/download/${RCON_CLI_VERSION}/rcon-cli_${RCON_CLI_VERSION}_linux_${IMAGE_ARCH}.tar.gz /tmp/rcon-cli.tar.gz
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RUN tar x -f /tmp/rcon-cli.tar.gz -C /opt/ && \
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chmod +x /opt/rcon-cli
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ARG RESTIC_VERSION=0.9.5
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ADD https://github.com/restic/restic/releases/download/v${RESTIC_VERSION}/restic_${RESTIC_VERSION}_linux_${IMAGE_ARCH}.bz2 /tmp/restic.bz2
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RUN bunzip2 /tmp/restic.bz2 && \
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mv /tmp/restic /opt/restic && \
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chmod +x /opt/restic
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ARG DEMOTER_VERSION=0.1.0
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ADD https://github.com/itzg/entrypoint-demoter/releases/download/${DEMOTER_VERSION}/entrypoint-demoter_${DEMOTER_VERSION}_linux_${IMAGE_ARCH}.tar.gz /tmp/entrypoint-demoter.tar.gz
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RUN tar x -f /tmp/entrypoint-demoter.tar.gz -C /opt/ && \
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chmod +x /opt/entrypoint-demoter
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ARG RCLONE_VERSION=1.49.5
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ADD https://downloads.rclone.org/v${RCLONE_VERSION}/rclone-v${RCLONE_VERSION}-linux-${IMAGE_ARCH}.zip /tmp/rclone.zip
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RUN mkdir -p /tmp/rclone && \
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unzip /tmp/rclone.zip -d /tmp/rclone && \
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mv /tmp/rclone/rclone-v${RCLONE_VERSION}-linux-${IMAGE_ARCH}/rclone /opt/rclone && \
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chmod +x /opt/rclone
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FROM alpine
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RUN apk -U --no-cache add \
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bash \
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coreutils \
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openssh-client \
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python3 \
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dcron \
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mariadb-client \
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postgresql-client
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COPY --from=builder /opt/rcon-cli /opt/rcon-cli
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RUN ln -s /opt/rcon-cli /usr/bin
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COPY --from=builder /opt/restic /opt/restic
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RUN ln -s /opt/restic /usr/bin
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COPY --from=builder /opt/entrypoint-demoter /opt/entrypoint-demoter
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RUN ln -s /opt/entrypoint-demoter /usr/bin
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COPY --from=builder /opt/rclone /opt/rclone
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RUN ln -s /opt/rclone /usr/bin
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# install rcb python app
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ADD . /restic-compose-backup
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WORKDIR /restic-compose-backup
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RUN pip3 install -U pip setuptools wheel && pip3 install -e .
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ENV XDG_CACHE_HOME=/cache
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# end install
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ADD backup.sh /backup.sh
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RUN chmod +x ./backup.sh
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ENTRYPOINT []
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CMD ["./entrypoint.sh"]
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CMD ["./entrypoint.sh"]
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@ -0,0 +1,162 @@
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#!/bin/bash
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set -euo pipefail
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if [ "${DEBUG:-false}" == "true" ]; then
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set -x
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fi
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: "${RCON_HOST:=localhost}"
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: "${RCON_PORT:=25575}"
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: "${RCON_PASSWORD:=minecraft}"
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export RCON_HOST
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export RCON_PORT
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export RCON_PASSWORD
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###############
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## common ##
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## functions ##
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###############
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is_elem_in_array() {
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# $1 = element
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# All remaining arguments are array to search for the element in
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if [ "$#" -lt 2 ]; then
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log INTERNALERROR "Wrong number of arguments passed to is_elem_in_array function"
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return 2
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fi
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local element="${1}"
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shift
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local e
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for e; do
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if [ "${element}" == "${e}" ]; then
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return 0
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fi
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done
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return 1
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}
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log() {
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if [ "$#" -lt 1 ]; then
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log INTERNALERROR "Wrong number of arguments passed to log function"
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return 2
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fi
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local level="${1}"
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shift
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local valid_levels=(
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"INFO"
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"WARN"
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"ERROR"
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"INTERNALERROR"
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)
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if ! is_elem_in_array "${level}" "${valid_levels[@]}"; then
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log INTERNALERROR "Log level ${level} is not a valid level."
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return 2
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fi
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(
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# If any arguments are passed besides log level
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if [ "$#" -ge 1 ]; then
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# then use them as log message(s)
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<<<"${*}" cat -
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else
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# otherwise read log messages from standard input
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cat -
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fi
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if [ "${level}" == "INTERNALERROR" ]; then
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echo "Please report this: https://github.com/itzg/docker-mc-backup/issues"
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fi
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) | awk -v level="${level}" '{ printf("%s %s %s\n", strftime("%FT%T%z"), level, $0); fflush(); }'
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} >&2
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retry() {
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if [ "$#" -lt 3 ]; then
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log INTERNALERROR "Wrong number of arguments passed to retry function"
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return 1
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fi
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# How many times should we retry?
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# Value smaller than zero means infinitely
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local retries="${1}"
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# Time to sleep between retries
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local interval="${2}"
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readonly retries interval
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shift 2
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if (( retries < 0 )); then
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local retries_msg="infinite"
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else
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local retries_msg="${retries}"
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fi
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local i=-1 # -1 since we will increment it before printing
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while (( retries >= ++i )) || [ "${retries_msg}" != "${retries}" ]; do
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# Send SIGINT after 5 minutes. If it doesn't shut down in 30 seconds, kill it.
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if output="$(timeout --signal=SIGINT --kill-after=30s 5m "${@}" 2>&1 | tr '\n' '\t')"; then
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log INFO "Command executed successfully ${*}"
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return 0
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else
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log ERROR "Unable to execute ${*} - try ${i}/${retries_msg}. Retrying in ${interval}"
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if [ -n "${output}" ]; then
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log ERROR "Failure reason: ${output}"
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fi
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fi
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# shellcheck disable=SC2086
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sleep ${interval}
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done
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return 2
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}
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is_function() {
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if [ "${#}" -ne 1 ]; then
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log INTERNALERROR "is_function expects 1 argument, received ${#}"
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fi
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name="${1}"
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[ "$(type -t "${name}")" == "function" ]
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}
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call_if_function_exists() {
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if [ "${#}" -lt 1 ]; then
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log INTERNALERROR "call_if_function_exists expects at least 1 argument, received ${#}"
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return 2
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fi
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function_name="${1}"
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if is_function "${function_name}"; then
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eval "${@}"
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else
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log INTERNALERROR "${function_name} is not a valid function!"
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return 2
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fi
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}
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##########
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## main ##
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##########
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log INFO "waiting for rcon readiness..."
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# 20 times, 10 second delay
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retry 20 10s rcon-cli save-on
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if retry 5 10s rcon-cli save-off; then
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# No matter what we were doing, from now on if the script crashes
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# or gets shut down, we want to make sure saving is on
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trap 'retry 5 5s rcon-cli save-on' EXIT
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retry 5 10s rcon-cli save-all
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retry 5 10s sync
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rcb backup
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retry 20 10s rcon-cli save-on
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# Remove our exit trap now
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trap EXIT
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else
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log ERROR "Unable to turn saving off. Is the server running?"
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exit 1
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fi
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if (( PRUNE_BACKUPS_DAYS > 0 )); then
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rcb cleanup
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fi
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@ -1,2 +1,2 @@
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10 2 * * * source /env.sh && rcb backup > /proc/1/fd/1
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10 2 * * * source /env.sh && /backup.sh > /proc/1/fd/1
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