[mc] Added issues link

Document JVM_OPTS
For #176 and #177

elasticsearch/Dockerfile

@@ -4,12 +4,18 @@ LABEL maintainer "itzg"
 
 RUN apk -U add bash
 
-ENV ES_VERSION=5.4.1
+ARG ES_VERSION=5.5.1
+# avoid conflicts with debian host systems when mounting to host volume
+ARG DEFAULT_ES_USER_UID=1100
 
-ADD https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-$ES_VERSION.tar.gz /tmp/es.tgz
+ADD https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-$ES_VERSION.tar.gz /tmp
+# need to adapt to both Docker's new remote-unpack-ADD behavior and the old behavior
 RUN cd /usr/share && \
-  tar xf /tmp/es.tgz && \
-  rm /tmp/es.tgz
+  if [ -f /tmp/elasticsearch-$ES_VERSION.tar.gz ]; then \
+    tar xf /tmp/elasticsearch-$ES_VERSION.tar.gz; \
+    else mv /tmp/elasticsearch-${ES_VERSION} /usr/share; \
+    fi && \
+  rm -f /tmp/elasticsearch-$ES_VERSION.tar.gz
 
 EXPOSE 9200 9300
 
@@ -17,9 +23,10 @@ HEALTHCHECK --timeout=5s CMD wget -q -O - http://$HOSTNAME:9200/_cat/health
 
 ENV ES_HOME=/usr/share/elasticsearch-$ES_VERSION \
     DEFAULT_ES_USER=elasticsearch \
+    DEFAULT_ES_USER_UID=$DEFAULT_ES_USER_UID \
     ES_JAVA_OPTS="-Xms1g -Xmx1g"
 
-RUN adduser -S -s /bin/sh $DEFAULT_ES_USER
+RUN adduser -S -s /bin/sh -u $DEFAULT_ES_USER_UID $DEFAULT_ES_USER
 
 VOLUME ["/data","/conf"]
 

elasticsearch/README.md

@@ -181,8 +181,9 @@ To simplify all that, this image provides a `TYPE` variable to let you amongst t
 * `MASTER` : master-eligible, but holds no data. It is good to have three or more of these in a
 large cluster
 * `DATA` (or `NON_MASTER`) : holds data and serves search/index requests. Scale these out for elastic-y goodness.
+* `NON_DATA` : performs all duties except holding data
 * `GATEWAY` (or `COORDINATING`) : only operates as a client node or a "smart router". These are the ones whose HTTP port 9200 will need to be exposed
-* `INGEST` : operates only as an ingest node and is not master or data eligble
+* `INGEST` : operates only as an ingest node and is not master or data eligible
 
 A [Docker Compose](https://docs.docker.com/compose/overview/) file will serve as a good example of these three node types:
 

elasticsearch/docker-compose-3x1GB.yml

@@ -0,0 +1,35 @@
+# This composition is known to work on a Swarm cluster consisting of
+# 3 VM nodes with 1GB allocated to each.
+version: '3'
+
+services:
+  master:
+    image: itzg/elasticsearch
+    environment:
+      UNICAST_HOSTS: master
+      MIN_MASTERS: 1
+      ES_JAVA_OPTS: -Xms756m -Xmx756m
+      TYPE: NON_DATA
+    ports:
+      - "9200:9200"
+      - "9300:9300"
+    deploy:
+      replicas: 1
+      update_config:
+        parallelism: 1
+  data:
+    image: itzg/elasticsearch
+    deploy:
+      mode: global
+      update_config:
+        parallelism: 1
+    environment:
+      TYPE: DATA
+      UNICAST_HOSTS: master
+      ES_JAVA_OPTS: -Xms512m -Xmx512m
+  kibana:
+    image: kibana
+    ports:
+      - "5601:5601"
+    environment:
+      ELASTICSEARCH_URL: http://master:9200

elasticsearch/docker-compose-localbuild.yml

@@ -28,7 +28,7 @@ services:
       TYPE: INGEST
       UNICAST_HOSTS: master
   kibana:
-    image: kibana
+    image: kibana:5.5.1
     ports:
       - "5601:5601"
     environment:

elasticsearch/docker-compose-min.yml

@@ -0,0 +1,21 @@
+version: '3'
+
+services:
+  master:
+    image: itzg/elasticsearch
+    environment:
+      UNICAST_HOSTS: master
+      MIN_MASTERS: 1
+    ports:
+      - "9200:9200"
+      - "9300:9300"
+    deploy:
+      replicas: 1
+      update_config:
+        parallelism: 1
+  kibana:
+    image: kibana
+    ports:
+      - "5601:5601"
+    environment:
+      ELASTICSEARCH_URL: http://master:9200

elasticsearch/start

@@ -99,10 +99,18 @@ setup_personality() {
         OPTS="$OPTS -E node.master=false -E node.data=false -E node.ingest=true"
         ;;
 
-      DATA|NON_MASTER)
+      DATA)
         OPTS="$OPTS -E node.master=false -E node.data=true -E node.ingest=false"
         ;;
 
+      NON_MASTER)
+        OPTS="$OPTS -E node.master=false -E node.data=true -E node.ingest=true"
+        ;;
+
+      NON_DATA)
+        OPTS="$OPTS -E node.master=true -E node.data=false -E node.ingest=true"
+        ;;
+
       *)
         echo "Unknown node type. Please use MASTER|GATEWAY|DATA|NON_MASTER"
         exit 1

minecraft-server/Dockerfile

@@ -1,12 +1,8 @@
-FROM alpine
-
+FROM openjdk:8u131-jre-alpine
 
 LABEL maintainer "itzg"
 
-RUN echo "http://dl-3.alpinelinux.org/alpine/v3.5/community/" >> /etc/apk/repositories &&\
-        apk update && \
-        apk add \
-          openjdk8-jre-base \
+RUN apk add -U \
           openssl \
           imagemagick \
           lsof \

minecraft-server/README.md

@@ -1,6 +1,7 @@
 
 [![Docker Pulls](https://img.shields.io/docker/pulls/itzg/minecraft-server.svg)](https://hub.docker.com/r/itzg/minecraft-server/)
 [![Docker Stars](https://img.shields.io/docker/stars/itzg/minecraft-server.svg?maxAge=2592000)](https://hub.docker.com/r/itzg/minecraft-server/)
+[![GitHub Issues](https://img.shields.io/github/issues-raw/itzg/dockerfiles.svg)](https://github.com/itzg/dockerfiles/issues)
 
 This docker image provides a Minecraft Server that will automatically download the latest stable
 version at startup. You can also run/upgrade to any specific version or the
@@ -672,6 +673,20 @@ To use this option pass the environment variable `MODPACK`, such as
 top level of the zip archive. Make sure the jars are compatible with the
 particular `TYPE` of server you are running.
 
+### Remove old mods/plugins
+
+When the option above is specified (`MODPACK`) you can also instruct script to
+delete old mods/plugins prior to installing new ones. This behaviour is desirable
+in case you want to upgrade mods/plugins from downloaded zip file.
+To use this option pass the environment variable `REMOVE_OLD_MODS="TRUE"`, such as
+
+    docker run -d -e REMOVE_OLD_MODS="TRUE" -e MODPACK=http://www.example.com/mods/modpack.zip ...
+
+**NOTE:** This option will be taken into account only when option `MODPACK` is also used.
+
+**WARNING:** All content of the `mods` or `plugins` directory will be deleted
+before unpacking new content from the zip file.
+
 ### Online mode
 
 By default, server checks connecting players against Minecraft's account database. If you want to create an offline server or your server is not connected to the internet, you can disable the server to try connecting to minecraft.net to authenticate players with environment variable `ONLINE_MODE`, like this
@@ -696,3 +711,9 @@ The values of all three are passed directly to the JVM and support format/units
 ### /data ownership
 
 In order to adapt to differences in `UID` and `GID` settings the entry script will attempt to correct ownership and writability of the `/data` directory. This logic can be disabled by setting `-e SKIP_OWNERSHIP_FIX=TRUE`.
+
+### JVM Options
+
+General JVM options can be passed to the Minecraft Server invocation by passing a `JVM_OPTS`
+environment variable. Options like `-X` that need to proceed general JVM options can be passed
+via a `JVM_XX_OPTS` environment variable.

minecraft-server/start-minecraft.sh

@@ -1,5 +1,7 @@
 #!/bin/bash
 
+shopt -s nullglob
+
 #umask 002
 export HOME=/data
 
@@ -7,6 +9,10 @@ if [ ! -e /data/eula.txt ]; then
   if [ "$EULA" != "" ]; then
     echo "# Generated via Docker on $(date)" > eula.txt
     echo "eula=$EULA" >> eula.txt
+    if [ $? != 0 ]; then
+      echo "ERROR: unable to write eula to /data. Please make sure attached directory is writable by uid=${UID}"
+      exit 2
+    fi
   else
     echo ""
     echo "Please accept the Minecraft EULA at"
@@ -18,6 +24,11 @@ if [ ! -e /data/eula.txt ]; then
   fi
 fi
 
+if ! touch /data/.verify_access; then
+  echo "ERROR: /data doesn't seem to be writable. Please make sure attached directory is writable by uid=${UID} "
+  exit 2
+fi
+
 SERVER_PROPERTIES=/data/server.properties
 FTB_DIR=/data/FeedTheBeast
 VERSIONS_JSON=https://launchermeta.mojang.com/mc/game/version_manifest.json
@@ -403,9 +414,15 @@ case "X$MODPACK" in
     echo "  from $MODPACK ..."
     curl -sSL -o /tmp/modpack.zip "$MODPACK"
     if [ "$TYPE" = "SPIGOT" ]; then
+      if [ "$REMOVE_OLD_MODS" = "TRUE" ]; then
+        rm -rf /data/plugins/*
+      fi
       mkdir -p /data/plugins
       unzip -o -d /data/plugins /tmp/modpack.zip
     else
+      if [ "$REMOVE_OLD_MODS" = "TRUE" ]; then
+        rm -rf /data/mods/*
+      fi
       mkdir -p /data/mods
       unzip -o -d /data/mods /tmp/modpack.zip
     fi
@@ -417,6 +434,28 @@ case "X$MODPACK" in
 esac
 fi
 
+# If supplied with a URL for a config (simple zip of configurations), download it and unpack
+if [[ "$MODCONFIG" ]]; then
+case "X$MODCONFIG" in
+  X[Hh][Tt][Tt][Pp]*[Zz][iI][pP])
+    echo "Downloading mod/plugin configs via HTTP"
+    echo "  from $MODCONFIG ..."
+    curl -sSL -o /tmp/modconfig.zip "$MODCONFIG"
+    if [ "$TYPE" = "SPIGOT" ]; then
+      mkdir -p /data/plugins
+      unzip -o -d /data/plugins /tmp/modconfig.zip
+    else
+      mkdir -p /data/config
+      unzip -o -d /data/config /tmp/modconfig.zip
+    fi
+    rm -f /tmp/modconfig.zip
+    ;;
+  *)
+    echo "Invalid URL given for modconfig: Must be HTTP or HTTPS and a ZIP file"
+    ;;
+esac
+fi
+
 function setServerProp {
   local prop=$1
   local var=$2
@@ -441,11 +480,10 @@ if [ ! -e server.properties ]; then
   setServerProp "allow-nether" "$ALLOW_NETHER"
   setServerProp "announce-player-achievements" "$ANNOUNCE_PLAYER_ACHIEVEMENTS"
   setServerProp "enable-command-block" "$ENABLE_COMMAND_BLOCK"
-  setServerProp "spawn-animals" "$SPAWN_ANIMAILS"
+  setServerProp "spawn-animals" "$SPAWN_ANIMALS"
   setServerProp "spawn-monsters" "$SPAWN_MONSTERS"
   setServerProp "spawn-npcs" "$SPAWN_NPCS"
   setServerProp "generate-structures" "$GENERATE_STRUCTURES"
-  setServerProp "spawn-npcs" "$SPAWN_NPCS"
   setServerProp "view-distance" "$VIEW_DISTANCE"
   setServerProp "hardcore" "$HARDCORE"
   setServerProp "max-build-height" "$MAX_BUILD_HEIGHT"
@@ -527,7 +565,7 @@ if [ ! -e server.properties ]; then
         ;;
     esac
 
-    sed -i "/gamemode\s*=/ c gamemode=$MODE" $SERVER_PROPERTIES
+    sed -i "/^gamemode\s*=/ c gamemode=$MODE" $SERVER_PROPERTIES
   fi
 fi
 
@@ -555,13 +593,13 @@ if [ -n "$ICON" -a ! -e server-icon.png ]; then
   fi
 fi
 
-# Make sure files exist to avoid errors
-if [ ! -e banned-players.json ]; then
-	echo '[]' > banned-players.json
-fi
-if [ ! -e banned-ips.json ]; then
-	echo '[]' > banned-ips.json
-fi
+# Make sure files exist and are valid JSON (for pre-1.12 to 1.12 upgrades)
+for j in *.json; do
+  if [[ $(python -c "print open('$j').read().strip()==''") = True ]]; then
+    echo "Fixing JSON $j"
+    echo '[]' > $j
+  fi
+done
 
 # If any modules have been provided, copy them over
 mkdir -p /data/mods