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+FROM bde2020/hadoop-base:2.0.0-hadoop3.2.1-java8
+
+MAINTAINER Ivan Ermilov <ivan.s.ermilov@gmail.com>
+
+HEALTHCHECK CMD curl -f http://localhost:8188/ || exit 1
+
+ENV YARN_CONF_yarn_timeline___service_leveldb___timeline___store_path=/hadoop/yarn/timeline
+RUN mkdir -p /hadoop/yarn/timeline
+VOLUME /hadoop/yarn/timeline
+
+ADD run.sh /run.sh
+RUN chmod a+x /run.sh
+
+EXPOSE 8188
+
+CMD ["/run.sh"]

entrypoint.sh

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+#!/bin/bash
+
+# Set some sensible defaults
+export CORE_CONF_fs_defaultFS=${CORE_CONF_fs_defaultFS:-hdfs://`hostname -f`:8020}
+
+function addProperty() {
+  local path=$1
+  local name=$2
+  local value=$3
+
+  local entry="<property><name>$name</name><value>${value}</value></property>"
+  local escapedEntry=$(echo $entry | sed 's/\//\\\//g')
+  sed -i "/<\/configuration>/ s/.*/${escapedEntry}\n&/" $path
+}
+
+function configure() {
+    local path=$1
+    local module=$2
+    local envPrefix=$3
+
+    local var
+    local value
+    
+    echo "Configuring $module"
+    for c in `printenv | perl -sne 'print "$1 " if m/^${envPrefix}_(.+?)=.*/' -- -envPrefix=$envPrefix`; do 
+        name=`echo ${c} | perl -pe 's/___/-/g; s/__/@/g; s/_/./g; s/@/_/g;'`
+        var="${envPrefix}_${c}"
+        value=${!var}
+        echo " - Setting $name=$value"
+        addProperty /etc/hadoop/$module-site.xml $name "$value"
+    done
+}
+
+configure /etc/hadoop/core-site.xml core CORE_CONF
+configure /etc/hadoop/hdfs-site.xml hdfs HDFS_CONF
+configure /etc/hadoop/yarn-site.xml yarn YARN_CONF
+configure /etc/hadoop/httpfs-site.xml httpfs HTTPFS_CONF
+configure /etc/hadoop/kms-site.xml kms KMS_CONF
+configure /etc/hadoop/mapred-site.xml mapred MAPRED_CONF
+
+if [ "$MULTIHOMED_NETWORK" = "1" ]; then
+    echo "Configuring for multihomed network"
+
+    # HDFS
+    addProperty /etc/hadoop/hdfs-site.xml dfs.namenode.rpc-bind-host 0.0.0.0
+    addProperty /etc/hadoop/hdfs-site.xml dfs.namenode.servicerpc-bind-host 0.0.0.0
+    addProperty /etc/hadoop/hdfs-site.xml dfs.namenode.http-bind-host 0.0.0.0
+    addProperty /etc/hadoop/hdfs-site.xml dfs.namenode.https-bind-host 0.0.0.0
+    addProperty /etc/hadoop/hdfs-site.xml dfs.client.use.datanode.hostname true
+    addProperty /etc/hadoop/hdfs-site.xml dfs.datanode.use.datanode.hostname true
+
+    # YARN
+    addProperty /etc/hadoop/yarn-site.xml yarn.resourcemanager.bind-host 0.0.0.0
+    addProperty /etc/hadoop/yarn-site.xml yarn.nodemanager.bind-host 0.0.0.0
+    addProperty /etc/hadoop/yarn-site.xml yarn.timeline-service.bind-host 0.0.0.0
+
+    # MAPRED
+    addProperty /etc/hadoop/mapred-site.xml yarn.nodemanager.bind-host 0.0.0.0
+fi
+
+if [ -n "$GANGLIA_HOST" ]; then
+    mv /etc/hadoop/hadoop-metrics.properties /etc/hadoop/hadoop-metrics.properties.orig
+    mv /etc/hadoop/hadoop-metrics2.properties /etc/hadoop/hadoop-metrics2.properties.orig
+
+    for module in mapred jvm rpc ugi; do
+        echo "$module.class=org.apache.hadoop.metrics.ganglia.GangliaContext31"
+        echo "$module.period=10"
+        echo "$module.servers=$GANGLIA_HOST:8649"
+    done > /etc/hadoop/hadoop-metrics.properties
+    
+    for module in namenode datanode resourcemanager nodemanager mrappmaster jobhistoryserver; do
+        echo "$module.sink.ganglia.class=org.apache.hadoop.metrics2.sink.ganglia.GangliaSink31"
+        echo "$module.sink.ganglia.period=10"
+        echo "$module.sink.ganglia.supportsparse=true"
+        echo "$module.sink.ganglia.slope=jvm.metrics.gcCount=zero,jvm.metrics.memHeapUsedM=both"
+        echo "$module.sink.ganglia.dmax=jvm.metrics.threadsBlocked=70,jvm.metrics.memHeapUsedM=40"
+        echo "$module.sink.ganglia.servers=$GANGLIA_HOST:8649"
+    done > /etc/hadoop/hadoop-metrics2.properties
+fi
+
+function wait_for_it()
+{
+    local serviceport=$1
+    local service=${serviceport%%:*}
+    local port=${serviceport#*:}
+    local retry_seconds=5
+    local max_try=100
+    let i=1
+
+    nc -z $service $port
+    result=$?
+
+    until [ $result -eq 0 ]; do
+      echo "[$i/$max_try] check for ${service}:${port}..."
+      echo "[$i/$max_try] ${service}:${port} is not available yet"
+      if (( $i == $max_try )); then
+        echo "[$i/$max_try] ${service}:${port} is still not available; giving up after ${max_try} tries. :/"
+        exit 1
+      fi
+      
+      echo "[$i/$max_try] try in ${retry_seconds}s once again ..."
+      let "i++"
+      sleep $retry_seconds
+
+      nc -z $service $port
+      result=$?
+    done
+    echo "[$i/$max_try] $service:${port} is available."
+}
+
+for i in ${SERVICE_PRECONDITION[@]}
+do
+    wait_for_it ${i}
+done
+
+exec $@

run.sh

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+#!/bin/bash
+
+datadir=`echo $HDFS_CONF_dfs_datanode_data_dir | perl -pe 's#file://##'`
+if [ ! -d $datadir ]; then
+  echo "Datanode data directory not found: $datadir"
+  exit 2
+fi
+
+$HADOOP_HOME/bin/hdfs --config $HADOOP_CONF_DIR datanode