Fix RAM allocation in template

Dockerfile

@@ -1,10 +1,13 @@
-FROM openjdk:8u212-jre-alpine
+FROM openjdk:16-slim
 
-EXPOSE 25565
+RUN apt update
-EXPOSE 25575
+RUN apt install -y xxd cron
 
-WORKDIR /mc-server
+COPY cron-backup /etc/cron.d/minecraft-backup
 
-COPY . /mc-server
+RUN chmod 0644 /etc/cron.d/minecraft-backup
-RUN chmod +x /mc-server/scripts/start.sh
+RUN crontab /etc/cron.d/minecraft-backup
-CMD ["/bin/sh", "-c", "./scripts/start.sh"]
+
+RUN touch /var/log/cron.log
+
+CMD cron

README.md

@@ -15,5 +15,8 @@ docker-compose up -d
 
 All necessary images should be downloaded automatically and the service should be started in the background.
 
+## Template deployment
+When starting a new instance from the template branch, you need to add your own `server.jar` file to the root of the folder for docker to start the server.
+
 ## Minecraft update
 When an update is release by Mojang, the `jar` file must be updated and further configuration might be necessary to keep server optimization and quality of life improvements.

banned-ips.json

@@ -1 +0,0 @@
-[]

banned-players.json

@@ -1 +0,0 @@
-[]

cron-backup

@@ -0,0 +1 @@
+0 */6 * * * /mc-server/scripts/backup_task.sh

docker-compose.yml

@@ -8,7 +8,8 @@ services:
             dockerfile: Dockerfile
         ports:
             - 25565:25565
-            - 25575:25575
         volumes:
-            - ${PWD}/world:/mc-server/world
+            - ${PWD}:/mc-server
+        working_dir: "/mc-server"
+        entrypoint: ["sh", "/mc-server/scripts/init.sh"]
 

fabric-server-launcher.properties

@@ -1,2 +0,0 @@
-#Sat Aug 15 13:52:53 CEST 2020
-serverJar=server.jar

lithium.properties

@@ -1,6 +0,0 @@
-# This is the configuration file for Lithium.
-#
-# You can find information on editing this file and all the available options here:
-# https://github.com/jellysquid3/lithium-fabric/wiki/Configuration-File
-#
-# By default, this file will be empty except for this notice.

scripts/backup.sh

@@ -0,0 +1,564 @@
+#!/usr/bin/env bash
+
+# Minecraft server automatic backup management script
+# https://github.com/nicolaschan/minecraft-backup
+# MIT License
+#
+# For Minecraft servers running in a GNU screen, tmux, or RCON.
+# For most convenience, run automatically with cron.
+
+# Default Configuration 
+SCREEN_NAME="" # Name of the GNU Screen, tmux session, or hostname:port:password for RCON
+SERVER_WORLDS=() # Server world directory
+BACKUP_DIRECTORY="" # Directory to save backups in
+MAX_BACKUPS=128 # -1 indicates unlimited
+DELETE_METHOD="thin" # Choices: thin, sequential, none; sequential: delete oldest; thin: keep last 24 hourly, last 30 daily, and monthly (use with 1 hr cron interval)
+COMPRESSION_ALGORITHM="gzip" # Leave empty for no compression
+COMPRESSION_FILE_EXTENSION=".gz" # Leave empty for no compression; Precede with a . (for example: ".gz")
+COMPRESSION_LEVEL=3 # Passed to the compression algorithm
+ENABLE_CHAT_MESSAGES=false # Tell players in Minecraft chat about backup status
+PREFIX="Backup" # Shows in the chat message
+DEBUG=false # Enable debug messages
+SUPPRESS_WARNINGS=false # Suppress warnings
+RESTIC_HOSTNAME="" # Leave empty to use system hostname
+LOCK_FILE="" # Optional lock file to acquire to ensure two backups don't run at once
+LOCK_FILE_TIMEOUT="" # Optional lock file wait timeout (in seconds)
+WINDOW_MANAGER="screen" # Choices: screen, tmux, RCON
+
+# Other Variables (do not modify)
+DATE_FORMAT="%F_%H-%M-%S"
+TIMESTAMP=$(date +$DATE_FORMAT)
+
+log-fatal () {
+  echo -e "\033[0;31mFATAL:\033[0m $*"
+}
+log-warning () {
+  echo -e "\033[0;33mWARNING:\033[0m $*"
+}
+debug-log () {
+  if "$DEBUG"; then
+    echo "$1"
+  fi
+}
+
+while getopts 'a:cd:e:f:hH:i:l:m:o:p:qr:s:t:u:vw:x' FLAG; do
+  case $FLAG in
+    a) COMPRESSION_ALGORITHM=$OPTARG ;;
+    c) ENABLE_CHAT_MESSAGES=true ;;
+    d) DELETE_METHOD=$OPTARG ;;
+    e) COMPRESSION_FILE_EXTENSION=".$OPTARG" ;;
+    f) TIMESTAMP=$OPTARG ;;
+    h) echo "Minecraft Backup"
+       echo "Repository: https://github.com/nicolaschan/minecraft-backup"
+       echo "-a    Compression algorithm (default: gzip)"
+       echo "-c    Enable chat messages"
+       echo "-d    Delete method: thin (default), sequential, none"
+       echo "-e    Compression file extension, exclude leading \".\" (default: gz)"
+       echo "-f    Output file name (default is the timestamp)"
+       echo "-h    Shows this help text"
+       echo "-H    Set hostname for restic backup (restic only)"
+       echo "-i    Input directory (path to world folder, use -i once for each world)"
+       echo "-l    Compression level (default: 3)"
+       echo "-m    Maximum backups to keep, use -1 for unlimited (default: 128)"
+       echo "-o    Output directory"
+       echo "-p    Prefix that shows in Minecraft chat (default: Backup)"
+       echo "-q    Suppress warnings"
+       echo "-r    Restic repo name (if using restic)"
+       echo "-s    Screen name, tmux session name, or hostname:port:password for RCON"
+       echo "-t    Enable lock file (lock file not used by default)"
+       echo "-u    Lock file timeout seconds (empty = unlimited)"
+       echo "-v    Verbose mode"
+       echo "-w    Window manager: screen (default), tmux, RCON"
+       exit 0
+       ;;
+    H) RESTIC_HOSTNAME=$OPTARG ;;
+    i) SERVER_WORLDS+=("$OPTARG") ;;
+    l) COMPRESSION_LEVEL=$OPTARG ;;
+    m) MAX_BACKUPS=$OPTARG ;;
+    o) BACKUP_DIRECTORY=$OPTARG ;;
+    p) PREFIX=$OPTARG ;;
+    q) SUPPRESS_WARNINGS=true ;;
+    r) RESTIC_REPO=$OPTARG ;;
+    s) SCREEN_NAME=$OPTARG ;;
+    t) LOCK_FILE=$OPTARG ;;
+    u) LOCK_FILE_TIMEOUT=$OPTARG ;;
+    v) DEBUG=true ;;
+    w) WINDOW_MANAGER=$OPTARG ;;
+    *) log-fatal "Invalid option -$FLAG"; exit 1 ;;
+  esac
+done
+
+rcon-command () {
+  HOST="$(echo "$1" | cut -d: -f1)"
+  PORT="$(echo "$1" | cut -d: -f2)"
+  PASSWORD="$(echo "$1" | cut -d: -f3-)"
+  COMMAND="$2"
+
+  reverse-hex-endian () {
+    # Given a 4-byte hex integer, reverse endianness
+    while read -r -d '' -N 8 INTEGER; do
+      echo "$INTEGER" | sed -E 's/(..)(..)(..)(..)/\4\3\2\1/'
+    done
+  }
+
+  decode-hex-int () {
+    # decode little-endian hex integer
+    while read -r -d '' -N 8 INTEGER; do
+      BIG_ENDIAN_HEX=$(echo "$INTEGER" | reverse-hex-endian)
+      echo "$((16#$BIG_ENDIAN_HEX))"
+    done
+  }
+
+  stream-to-hex () {
+    xxd -ps
+  }
+
+  hex-to-stream () {
+    xxd -ps -r
+  }
+
+  encode-int () {
+    # Encode an integer as 4 bytes in little endian and return as hex
+    INT="$1"
+    # Source: https://stackoverflow.com/a/9955198
+    printf "%08x" "$INT" | sed -E 's/(..)(..)(..)(..)/\4\3\2\1/' 
+  }
+
+  encode () {
+    # Encode a packet type and payload for the rcon protocol
+    TYPE="$1"
+    PAYLOAD="$2"
+    REQUEST_ID="$3"
+    PAYLOAD_LENGTH="${#PAYLOAD}" 
+    TOTAL_LENGTH="$((4 + 4 + PAYLOAD_LENGTH + 1 + 1))"
+
+    OUTPUT=""
+    OUTPUT+=$(encode-int "$TOTAL_LENGTH")
+    OUTPUT+=$(encode-int "$REQUEST_ID")
+    OUTPUT+=$(encode-int "$TYPE")
+    OUTPUT+=$(echo -n "$PAYLOAD" | stream-to-hex)
+    OUTPUT+="0000"
+    
+    echo -n "$OUTPUT" | hex-to-stream 
+  }
+
+  read-response () {
+    # read next response packet and return the payload text
+    HEX_LENGTH=$(head -c4 <&3 | stream-to-hex | reverse-hex-endian)
+    LENGTH=$((16#$HEX_LENGTH))
+
+    RESPONSE_PAYLOAD=$(head -c $LENGTH <&3 | stream-to-hex)
+    echo -n "$RESPONSE_PAYLOAD"
+  }
+
+  response-request-id () {
+    echo -n "${1:0:8}" | decode-hex-int
+  }
+
+  response-type () {
+    echo -n "${1:8:8}" | decode-hex-int
+  }
+
+  response-payload () {
+    echo -n "${1:16:-4}" | hex-to-stream
+  }
+
+  login () {
+    PASSWORD="$1"
+    encode 3 "$PASSWORD" 12 >&3
+    RESPONSE=$(read-response "$IN_PIPE")
+
+    RESPONSE_REQUEST_ID=$(response-request-id "$RESPONSE")
+    if [[ "$RESPONSE_REQUEST_ID" == "-1" ]] || [[ "$RESPONSE_REQUEST_ID" == "4294967295" ]]; then
+      log-warning "RCON connection failed: Wrong RCON password" 1>&2
+      return 1
+    fi
+  }
+
+  run-command () {
+    COMMAND="$1"
+    
+    # encode 2 "$COMMAND" 13 >> "$OUT_PIPE"
+    encode 2 "$COMMAND" 13 >&3
+
+    RESPONSE=$(read-response "$IN_PIPE")
+    response-payload "$RESPONSE"
+  }
+
+  # Open a TCP socket
+  # Source: https://www.xmodulo.com/tcp-udp-socket-bash-shell.html
+  if ! exec 3<>/dev/tcp/"$HOST"/"$PORT"; then
+    log-warning "RCON connection failed: Could not connect to $HOST:$PORT"
+    return 1
+  fi
+
+  login "$PASSWORD" || return 1
+  debug-log "$(run-command "$COMMAND")"
+
+  # Close the socket
+  exec 3<&-
+  exec 3>&-
+}
+
+if ! "$DEBUG"; then
+  QUIET="-q"
+else
+  QUIET=""
+fi
+
+if [[ "$COMPRESSION_FILE_EXTENSION" == "." ]]; then
+  COMPRESSION_FILE_EXTENSION=""
+fi
+
+# Check for missing encouraged arguments
+if ! $SUPPRESS_WARNINGS; then
+  if [[ "$SCREEN_NAME" == "" ]]; then
+    log-warning "Minecraft screen/tmux/rcon location not specified (use -s)"
+  fi
+fi
+# Check for required arguments
+MISSING_CONFIGURATION=false
+if [[ "${#SERVER_WORLDS[@]}" == "0" ]]; then
+  log-fatal "Server world not specified (use -i)"
+  MISSING_CONFIGURATION=true
+fi
+if [[ "$BACKUP_DIRECTORY" == "" ]] && [[ "$RESTIC_REPO" == "" ]]; then
+  log-fatal "Backup location not specified (use -o or -r)"
+  MISSING_CONFIGURATION=true
+fi
+if [[ "$RESTIC_REPO" != "" ]]; then
+  if [[ "$BACKUP_DIRECTORY" != "" ]]; then
+    log-fatal "Both output directory (-o) and restic repo (-r) specified but only one may be used at a time"
+    MISSING_CONFIGURATION=true
+  fi
+  if [[ $MAX_BACKUPS -ge 0 ]] && [[ $MAX_BACKUPS -lt 70 ]] && [[ $DELETE_METHOD == "thin" ]]; then
+    log-fatal "Thinning delete with restic requires at least 70 snapshots to be kept. If you need to keep fewer than 70, use sequential delete."
+    MISSING_CONFIGURATION=true
+  fi
+fi
+
+if $MISSING_CONFIGURATION; then
+  exit 1
+fi
+
+if [[ "$BACKUP_DIRECTORY" != "" ]]; then
+  ARCHIVE_FILE_NAME="$TIMESTAMP.tar$COMPRESSION_FILE_EXTENSION"
+  ARCHIVE_PATH="$BACKUP_DIRECTORY/$ARCHIVE_FILE_NAME"
+fi
+if [[ "$RESTIC_REPO" != "" ]]; then
+  ARCHIVE_PATH="$RESTIC_REPO $TIMESTAMP"
+fi
+
+# Minecraft server screen interface functions
+message-players () {
+  local MESSAGE=$1
+  local HOVER_MESSAGE=$2
+  message-players-color "$MESSAGE" "$HOVER_MESSAGE" "gray"
+}
+execute-command () {
+  local COMMAND=$1
+  if [[ $SCREEN_NAME != "" ]]; then
+    case $WINDOW_MANAGER in
+      "screen") screen -S "$SCREEN_NAME" -p 0 -X stuff "$COMMAND$(printf \\r)"
+        ;;
+      "tmux") tmux send-keys -t "$SCREEN_NAME" "$COMMAND" ENTER
+        ;;
+      "RCON"|"rcon") rcon-command "$SCREEN_NAME" "$COMMAND"
+        ;;
+    esac
+  fi
+}
+message-players-error () {
+  local MESSAGE=$1
+  local HOVER_MESSAGE=$2
+  message-players-color "$MESSAGE" "$HOVER_MESSAGE" "red"
+}
+message-players-success () {
+  local MESSAGE=$1
+  local HOVER_MESSAGE=$2
+  message-players-color "$MESSAGE" "$HOVER_MESSAGE" "green"
+}
+message-players-color () {
+  local MESSAGE=$1
+  local HOVER_MESSAGE=$2
+  local COLOR=$3
+  debug-log "$MESSAGE ($HOVER_MESSAGE)"
+  if $ENABLE_CHAT_MESSAGES; then
+    execute-command "tellraw @a [\"\",{\"text\":\"[$PREFIX] \",\"color\":\"gray\",\"italic\":true},{\"text\":\"$MESSAGE\",\"color\":\"$COLOR\",\"italic\":true,\"hoverEvent\":{\"action\":\"show_text\",\"value\":{\"text\":\"\",\"extra\":[{\"text\":\"$HOVER_MESSAGE\"}]}}}]"
+  fi
+}
+
+# Parse file timestamp to one readable by "date" 
+parse-file-timestamp () {
+  local DATE_STRING
+  DATE_STRING="$(echo "$1" | awk -F_ '{gsub(/-/,":",$2); print $1" "$2}')"
+  echo "$DATE_STRING"
+}
+
+# Delete a backup
+delete-backup () {
+  local BACKUP=$1
+  rm "$BACKUP_DIRECTORY"/"$BACKUP"
+  message-players "Deleted old backup" "$BACKUP"
+}
+
+# Sequential delete method
+delete-sequentially () {
+  local BACKUPS=("$BACKUP_DIRECTORY"/*) # List oldest first
+  while [[ $MAX_BACKUPS -ge 0 && ${#BACKUPS[@]} -gt $MAX_BACKUPS ]]; do
+    delete-backup "$(basename "${BACKUPS[0]}")"
+    BACKUPS=("$BACKUP_DIRECTORY"/*)
+  done
+}
+
+# Functions to sort backups into correct categories based on timestamps
+is-hourly-backup () {
+  local TIMESTAMP=$*
+  local MINUTE
+  MINUTE=$(date -d "$TIMESTAMP" +%M)
+  return "$MINUTE"
+}
+is-daily-backup () {
+  local TIMESTAMP=$*
+  local HOUR
+  HOUR=$(date -d "$TIMESTAMP" +%H)
+  return "$HOUR"
+}
+is-weekly-backup () {
+  local TIMESTAMP=$*
+  local DAY
+  DAY=$(date -d "$TIMESTAMP" +%u)
+  return "$((DAY - 1))"
+}
+
+# Helper function to sum an array
+array-sum () {
+  SUM=0
+  for NUMBER in "$@"; do
+    (( SUM += NUMBER ))
+  done
+  echo "$SUM"
+}
+
+# Given two exit codes, print a nonzero one if there is one
+exit-code () {
+  if [[ "$1" != "0" ]]; then
+    echo "$1"
+  else
+    if [[ "$2" == "" ]]; then
+      echo 0
+    else
+      echo "$2"
+    fi
+  fi
+}
+
+# Thinning delete method
+delete-thinning () {
+  # sub-hourly, hourly, daily, weekly is everything else
+  local BLOCK_SIZES=(16 24 30)
+  # First block is unconditional
+  # The next blocks will only accept files whose names cause these functions to return true (0)
+  local BLOCK_FUNCTIONS=("is-hourly-backup" "is-daily-backup" "is-weekly-backup")
+
+  # Warn if $MAX_BACKUPS does not have enough room for all the blocks
+  TOTAL_BLOCK_SIZE=$(array-sum "${BLOCK_SIZES[@]}")
+  if [[  $MAX_BACKUPS != -1 ]] && [[ $TOTAL_BLOCK_SIZE -gt $MAX_BACKUPS ]]; then
+    if ! $SUPPRESS_WARNINGS; then
+      log-warning "MAX_BACKUPS ($MAX_BACKUPS) is smaller than TOTAL_BLOCK_SIZE ($TOTAL_BLOCK_SIZE)"
+    fi
+  fi
+
+  local CURRENT_INDEX=0
+  local BACKUPS=("$BACKUP_DIRECTORY"/*) # Oldest first
+  local NUM_BACKUPS="${#BACKUPS[@]}"
+
+  for BLOCK_INDEX in "${!BLOCK_SIZES[@]}"; do
+    local BLOCK_SIZE=${BLOCK_SIZES[BLOCK_INDEX]}
+    local BLOCK_FUNCTION=${BLOCK_FUNCTIONS[BLOCK_INDEX]}
+    local OLDEST_BACKUP_IN_BLOCK_INDEX=$((NUM_BACKUPS - 1 - (BLOCK_SIZE + CURRENT_INDEX))) # Not an off-by-one error because a new backup was already saved 
+    if [ "$OLDEST_BACKUP_IN_BLOCK_INDEX" -lt 0 ]; then
+      break;
+    fi
+    local OLDEST_BACKUP_IN_BLOCK
+    OLDEST_BACKUP_IN_BLOCK="$(basename "${BACKUPS[OLDEST_BACKUP_IN_BLOCK_INDEX]}")"
+
+    local OLDEST_BACKUP_TIMESTAMP
+    OLDEST_BACKUP_TIMESTAMP=$(parse-file-timestamp "${OLDEST_BACKUP_IN_BLOCK:0:19}")
+    local BLOCK_COMMAND="$BLOCK_FUNCTION $OLDEST_BACKUP_TIMESTAMP"
+
+   if $BLOCK_COMMAND; then
+      # Oldest backup in this block satisfies the condition for placement in the next block
+      debug-log "$OLDEST_BACKUP_IN_BLOCK promoted to next block" 
+    else
+      # Oldest backup in this block does not satisfy the condition for placement in next block
+      delete-backup "$OLDEST_BACKUP_IN_BLOCK"
+      break
+    fi
+
+    ((CURRENT_INDEX += BLOCK_SIZE))
+  done
+
+  delete-sequentially
+}
+
+delete-restic-sequential () {
+  if [ "$MAX_BACKUPS" -ge 0 ]; then
+    restic forget -r "$RESTIC_REPO" --keep-last "$MAX_BACKUPS" "$QUIET"
+  fi
+}
+
+delete-restic-thinning () {
+  if [ "$MAX_BACKUPS" -ge 70 ]; then 
+    # MAX_BACKUPS >= 70
+    restic forget -r "$RESTIC_REPO" --keep-last 16 --keep-hourly 24 --keep-daily 30 --keep-weekly $((MAX_BACKUPS - 70)) "$QUIET"
+  else 
+    # We have a check that MAX_BACKUPS is not 70 > MAX_BACKUPS >= 0, so we can assume here it is negative
+    # Negative means don't delete old snapshots
+    restic forget -r "$RESTIC_REPO" --keep-last 16 --keep-hourly 24 --keep-daily 30 --keep-weekly 9999999 "$QUIET"
+  fi
+}
+
+# Delete old backups
+delete-old-backups () {
+  if [[ "$BACKUP_DIRECTORY" != "" ]]; then
+    case $DELETE_METHOD in
+      "sequential") delete-sequentially
+        ;;
+      "thin") delete-thinning
+        ;;
+    esac
+  fi
+  if [[ "$RESTIC_REPO" != "" ]]; then
+    case $DELETE_METHOD in
+      "sequential") delete-restic-sequential
+        ;;
+     "thin") delete-restic-thinning
+        ;;
+    esac
+  fi
+}
+
+clean-up () {
+  # Re-enable world autosaving
+  execute-command "save-on"
+
+  # Save the world
+  execute-command "save-all"
+
+  TIME_DELTA=$((END_TIME - START_TIME))
+
+  if [[ "$BACKUP_DIRECTORY" != "" ]]; then
+    WORLD_SIZE_BYTES=$(du --bytes --total --max-depth=0 "${SERVER_WORLDS[@]}" | tail -n 1 | awk '{print $1}')
+    ARCHIVE_SIZE_BYTES=$(du -b "$ARCHIVE_PATH" | awk '{print $1}')
+    ARCHIVE_SIZE=$(du -h "$ARCHIVE_PATH" | awk '{print $1}')
+    BACKUP_DIRECTORY_SIZE=$(du -h --max-depth=0 "$BACKUP_DIRECTORY" | awk '{print $1}')
+
+    # Check that archive size is not null and at least 200 Bytes
+    if [[ "$ARCHIVE_EXIT_CODE" == "0" && "$WORLD_SIZE_BYTES" -gt 0 && "$ARCHIVE_SIZE" != "" && "$ARCHIVE_SIZE_BYTES" -gt 200 ]]; then
+      # Notify players of completion
+      COMPRESSION_PERCENT=$((ARCHIVE_SIZE_BYTES * 100 / WORLD_SIZE_BYTES))
+      message-players-success "Backup complete!" "$TIME_DELTA s, $ARCHIVE_SIZE/$BACKUP_DIRECTORY_SIZE, $COMPRESSION_PERCENT%"
+      delete-old-backups
+      exit 0
+    else
+      rm "$ARCHIVE_PATH" # Delete bad archive so we can't fill up with bad archives
+      message-players-error "Backup was not saved!" "Please notify an administrator"
+      exit 1
+    fi
+  fi
+
+  if [[ "$RESTIC_REPO" != "" ]]; then
+    if [[ "$ARCHIVE_EXIT_CODE" == "0" ]]; then
+      message-players-success "Backup complete!" "$TIME_DELTA s"
+      delete-old-backups
+      exit 0
+    else
+      message-players-error "Backup was not saved!" "Please notify an administrator"
+      exit 1
+    fi
+  fi
+}
+
+trap "clean-up" 2
+
+do-backup () {
+  # Notify players of start
+  message-players "Starting backup..." "$ARCHIVE_PATH"
+
+  # Disable world autosaving
+  execute-command "save-off"
+
+  # Backup world
+  START_TIME=$(date +"%s")
+
+  if [[ "$BACKUP_DIRECTORY" != "" ]]; then
+    # Ensure backup directory exists
+    mkdir -p "$(dirname "$ARCHIVE_PATH")"
+
+    case $COMPRESSION_ALGORITHM in
+      # No compression
+      "") tar -cf "$ARCHIVE_PATH" "${SERVER_WORLDS[@]}"
+        ;;
+      # With compression
+      *) tar -cf - "${SERVER_WORLDS[@]}" | $COMPRESSION_ALGORITHM -cv -"$COMPRESSION_LEVEL" - > "$ARCHIVE_PATH" 2>> /dev/null
+        ;;
+    esac
+    EXIT_CODES=("${PIPESTATUS[@]}")
+
+    # tar exit codes: http://www.gnu.org/software/tar/manual/html_section/Synopsis.html
+    # 0 = successful, 1 = some files differ, 2 = fatal
+    if [ "${EXIT_CODES[0]}" == "1" ]; then
+      log-warning "Some files may differ in the backup archive (file changed as read)"
+      TAR_EXIT_CODE="0"
+    else
+      TAR_EXIT_CODE="${EXIT_CODES[0]}"
+    fi
+
+    ARCHIVE_EXIT_CODE="$(exit-code "$TAR_EXIT_CODE" "${EXIT_CODES[1]}")"
+    if [ "$ARCHIVE_EXIT_CODE" -ne 0 ]; then
+      log-fatal "Archive command exited with nonzero exit code $ARCHIVE_EXIT_CODE"
+    fi
+  fi
+
+  if [[ "$RESTIC_REPO" != "" ]]; then
+    RESTIC_TIMESTAMP="${TIMESTAMP:0:10} ${TIMESTAMP:11:2}:${TIMESTAMP:14:2}:${TIMESTAMP:17:2}"
+    if [[ "$RESTIC_HOSTNAME" == "" ]]; then
+      RESTIC_HOSTNAME_OPTION=()
+    else
+      RESTIC_HOSTNAME_OPTION=("--host" "$RESTIC_HOSTNAME")
+    fi
+    restic backup -r "$RESTIC_REPO" "${SERVER_WORLDS[@]}" --time "$RESTIC_TIMESTAMP" "$QUIET" "${RESTIC_HOSTNAME_OPTION[@]}"
+    ARCHIVE_EXIT_CODE=$?
+    if [ "$ARCHIVE_EXIT_CODE" -eq 3 ]; then
+      log-warning "Incomplete snapshot taken (some files could not be read)"
+      ARCHIVE_EXIT_CODE="0"
+    else 
+      if [ "$ARCHIVE_EXIT_CODE" -ne 0 ]; then
+        # According to the restic docs, exit code is either 0, 1, or 3
+        # Exit code 1 means fatal
+        # See: https://restic.readthedocs.io/en/latest/040_backup.html
+        log-fatal "No restic snapshot created (exit code $ARCHIVE_EXIT_CODE)"
+      fi
+    fi
+  fi
+
+  sync
+  END_TIME=$(date +"%s")
+
+  clean-up
+}
+
+if [[ "$LOCK_FILE" != "" ]]; then
+  TIMEOUT_OPTION=()
+  if [[ "$LOCK_FILE_TIMEOUT" != "" ]]; then
+    TIMEOUT_OPTION=("-w" "$LOCK_FILE_TIMEOUT")
+  fi
+  (if ! flock "${TIMEOUT_OPTION[@]}" --no-fork 200; then
+      log-fatal "Could not acquire lock on lock file: $LOCK_FILE"
+      exit 1
+    fi
+  do-backup) 200>"$LOCK_FILE"
+else
+  do-backup
+fi

scripts/backup_task.sh

@@ -0,0 +1 @@
+/mc-server/scripts/backup.sh -c -i /mc-server/world -o /mc-server/backups -s localhost:25575:secret -w rcon

scripts/init.sh

@@ -0,0 +1,2 @@
+sh -c "sleep 60 && /mc-server/scripts/backup_task.sh" &
+/mc-server/scripts/start.sh

scripts/start.sh

@@ -1 +1 @@
-java -XX:+UseG1GC -Xmx10G -Xms10G -Dsun.rmi.dgc.server.gcInterval=2147483646 -XX:+UnlockExperimentalVMOptions -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M -jar /mc-server/fabric-server-launch.jar nogui 
+java -XX:+UseG1GC -Xmx10G -Xms10G -Dsun.rmi.dgc.server.gcInterval=2147483646 -XX:+UnlockExperimentalVMOptions -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M -jar /mc-server/server.jar nogui 

server.properties

@@ -1,5 +1,5 @@
 #Minecraft server properties
-#Sun Aug 23 18:38:11 CEST 2020
+#Sun Jul 18 17:40:53 UTC 2021
 enable-jmx-monitoring=false
 rcon.port=25575
 level-seed=
@@ -12,11 +12,12 @@ motd=\u00A7e\u00A7lServeur SNIR\u00A7r \u00A77\u00A7oPowered by Bernard Inc.
 query.port=25565
 pvp=true
 generate-structures=true
-difficulty=easy
+difficulty=hard
 network-compression-threshold=256
+require-resource-pack=false
 max-tick-time=60000
-use-native-transport=true
 max-players=20
+use-native-transport=true
 online-mode=true
 enable-status=true
 allow-flight=false
@@ -24,6 +25,7 @@ broadcast-rcon-to-ops=true
 view-distance=10
 max-build-height=256
 server-ip=
+resource-pack-prompt=
 allow-nether=true
 server-port=25565
 enable-rcon=true
@@ -32,9 +34,10 @@ op-permission-level=4
 prevent-proxy-connections=false
 resource-pack=
 entity-broadcast-range-percentage=100
-rcon.password=
+rcon.password=secret
 player-idle-timeout=0
 force-gamemode=false
+rate-limit=0
 hardcore=false
 white-list=true
 broadcast-console-to-ops=true
@@ -43,6 +46,7 @@ spawn-animals=true
 snooper-enabled=true
 function-permission-level=2
 level-type=default
+text-filtering-config=
 spawn-monsters=true
 enforce-whitelist=false
 resource-pack-sha1=

usercache.json

@@ -1 +0,0 @@
-[{"name":"ImGuitoune","uuid":"338a2692-aaf1-4e95-8fe6-4ab8496132e1","expiresOn":"2020-09-12 21:55:53 +0200"},{"name":"ArthurCuillere","uuid":"1939a9de-319e-468d-b080-de48cad53ccd","expiresOn":"2020-08-29 15:48:04 +0200"},{"name":"PoneyFoufou","uuid":"d51cd9fc-e3e8-433a-aac3-51915d9360b5","expiresOn":"2020-08-29 15:47:53 +0200"},{"name":"Valouuh","uuid":"4d1b4f47-c6f0-4c72-93c1-9428a9f3250f","expiresOn":"2020-08-29 15:47:58 +0200"},{"name":"tospot46","uuid":"7ec06095-61b7-49fc-8d14-9f1285733e31","expiresOn":"2020-09-11 17:25:11 +0200"},{"name":"Cervicales","uuid":"e6a2efcf-70dc-43c6-94e5-e82b20d6ad98","expiresOn":"2020-09-11 16:10:34 +0200"},{"name":"LeGrosCon","uuid":"e84cbb15-a08b-4437-9e75-485bcf03f78a","expiresOn":"2020-08-29 15:47:47 +0200"},{"name":"Iseii","uuid":"39cee4db-3168-440e-9ddd-3176a6559338","expiresOn":"2020-08-29 15:47:33 +0200"},{"name":"Flo_Poney","uuid":"3c2e07cb-e9d4-468d-93e3-ca2777e952ab","expiresOn":"2020-08-29 15:47:40 +0200"}]