env.sh

#!/bin/bash
# Copyright (c) 2009 & onwards. MapR Tech, Inc., All rights reserved
# Please set all environment variable you want to be used during MapR cluster
# runtime here.
# namely MAPR_HOME, JAVA_HOME, MAPR_SUBNETS

#set JAVA_HOME to override default search
#export JAVA_HOME=
export MAPR_SUBNETS=
#export MAPR_HOME=
#export MAPR_ULIMIT_U=
#export MAPR_ULIMIT_N=
#export MAPR_SYSCTL_SOMAXCONN=

# Handle special case of bogus setting in some virtual machines
[ "${JAVA_HOME:-}" = "/usr" ]  && JAVA_HOME=""

# Look for installed JDK
if [ -z "$JAVA_HOME" ]; then
    sys_java="/usr/bin/java"
    if [ -e $sys_java ]; then
       jcmd=`readlink -f $sys_java`
       if [ -x ${jcmd%/jre/bin/java}/bin/javac ]; then
           JAVA_HOME=${jcmd%/jre/bin/java}
       elif [ -x ${jcmd%/java}/javac ]; then
           JAVA_HOME=${jcmd%/bin/java}
       fi
       [ -n "${JAVA_HOME}" ] && export JAVA_HOME
    fi
fi

if [ -n "$JAVA_HOME" ]; then
    java_version=`$JAVA_HOME/bin/java -version 2>&1 | head -n1 | cut -d '.' -f 2`
    [ $java_version -le 6 ] && unset JAVA_HOME
fi

# MARKER - DO NOT DELETE THIS LINE
# attempt to find java if JAVA_HOME not set
if [ -z "$JAVA_HOME" ]; then
  for candidate in \
    /usr/lib/jvm/java-8-openjdk* \
    /usr/lib/jvm/java-8-oracle* \
    /usr/lib/jvm/java-8-sun* \
    /usr/lib/jvm/java-1.8.0-*/jre \
    /usr/lib/jvm/java-7-openjdk* \
    /usr/lib/jvm/java-7-oracle* \
    /usr/lib/jvm/java-7-sun* \
    /usr/lib/jvm/java-1.7.0-*/jre \
    /Library/Java/Home \
    /usr/java/default \
    /usr/lib/jvm/default-java ; do
    if [ -e $candidate/bin/java ]; then
      export JAVA_HOME=$candidate
      break
    fi
  done
  # if we didn't set it
  if [ -z "$JAVA_HOME" ]; then
    cat 1>&2 <<EOF
+======================================================================+
|      Error: JAVA_HOME is not set and Java could not be found         |
+----------------------------------------------------------------------+
| Hadoop requires Java 1.7 or later.                                   |
| NOTE: This script will find Oracle or Open JDK Java whether you      |
|       install using the binary or the RPM based installer.           |
+======================================================================+
EOF
    exit 1
  fi
fi

# export JAVA_HOME to PATH
export PATH=$JAVA_HOME/bin:$PATH

# For Kerberos SSO support
# kerberos and ssl conf needed for kerberos sso
MAPR_HOME=${MAPR_HOME:=/opt/mapr}
MAPR_LOGIN_CONF=$MAPR_HOME/conf/mapr.login.conf
MAPR_CLUSTERS_CONF=$MAPR_HOME/conf/mapr-clusters.conf
SSL_TRUST_STORE=$MAPR_HOME/conf/ssl_truststore

MAPR_SECURITY_STATUS=false
if [ -r $MAPR_CLUSTERS_CONF ]; then
 MAPR_SECURITY_STATUS=`head -n 1 $MAPR_CLUSTERS_CONF | grep secure= | sed 's/^.*secure=//' | sed 's/ .*$//'`
fi

# uncomment the following line to debug client kerberos issues
#MAPR_KERBEROS_DEBUG="-Dsun.security.krb5.debug=true -Dsun.security.spnego.debug=true -Djavax.net.debug=all"

# security configuration for individual components
MAPR_JAAS_CONFIG_OPTS="-Djava.security.auth.login.config=${MAPR_LOGIN_CONF} ${MAPR_KERBEROS_DEBUG}"

if [ "$MAPR_SECURITY_STATUS" = "true" ]; then
  MAPR_ZOOKEEPER_OPTS="-Dzookeeper.saslprovider=com.mapr.security.maprsasl.MaprSaslProvider"
  MAPR_ECOSYSTEM_LOGIN_OPTS="-Dhadoop.login=hybrid"
  MAPR_ECOSYSTEM_SERVER_LOGIN_OPTS="-Dhadoop.login=hybrid_keytab"
  MAPR_HIVE_SERVER_LOGIN_OPTS="-Dhadoop.login=maprsasl_keytab"
  MAPR_HIVE_LOGIN_OPTS="-Dhadoop.login=maprsasl"
  MAPR_SSL_OPTS="-Djavax.net.ssl.trustStore=${SSL_TRUST_STORE}"
else
  MAPR_ZOOKEEPER_OPTS="-Dzookeeper.sasl.clientconfig=Client_simple -Dzookeeper.saslprovider=com.mapr.security.simplesasl.SimpleSaslProvider"
  MAPR_ECOSYSTEM_LOGIN_OPTS="-Dhadoop.login=simple"
  MAPR_ECOSYSTEM_SERVER_LOGIN_OPTS="-Dhadoop.login=simple"
  MAPR_HIVE_SERVER_LOGIN_OPTS="-Dhadoop.login=simple"
  MAPR_HIVE_LOGIN_OPTS="-Dhadoop.login=simple"
  ZOOKEEPER_SERVER_OPTS="-Dzookeeper.sasl.serverconfig=Server_simple"  
fi

# used by various servers and clients
HYBRID_LOGIN_OPTS="-Dhadoop.login=hybrid ${MAPR_JAAS_CONFIG_OPTS} ${MAPR_ZOOKEEPER_OPTS}"
# KERBEROS_LOGIN_OPTS is used by flume-ng script. If you change this variable be sure to 
# make corresponding changes in flume-ng script as well.
KERBEROS_LOGIN_OPTS="-Dhadoop.login=kerberos ${MAPR_JAAS_CONFIG_OPTS} ${MAPR_ZOOKEEPER_OPTS}"
SIMPLE_LOGIN_OPTS="-Dhadoop.login=simple ${MAPR_JAAS_CONFIG_OPTS} ${MAPR_ZOOKEEPER_OPTS}"
MAPR_LOGIN_OPTS="-Dhadoop.login=maprsasl ${MAPR_JAAS_CONFIG_OPTS} ${MAPR_ZOOKEEPER_OPTS}"

MAPR_AUTH_CLIENT_OPTS="${MAPR_LOGIN_OPTS} ${MAPR_SSL_OPTS}"

export MAPR_ECOSYSTEM_LOGIN_OPTS="${MAPR_ECOSYSTEM_LOGIN_OPTS} ${MAPR_JAAS_CONFIG_OPTS} ${MAPR_ZOOKEEPER_OPTS} ${MAPR_SSL_OPTS} -Dmapr.library.flatclass"
export MAPR_ECOSYSTEM_SERVER_LOGIN_OPTS="${MAPR_ECOSYSTEM_SERVER_LOGIN_OPTS} ${MAPR_JAAS_CONFIG_OPTS} ${MAPR_ZOOKEEPER_OPTS} ${MAPR_SSL_OPTS} -Dmapr.library.flatclass"
export MAPR_HIVE_SERVER_LOGIN_OPTS="${MAPR_HIVE_SERVER_LOGIN_OPTS} ${MAPR_JAAS_CONFIG_OPTS} ${MAPR_ZOOKEEPER_OPTS} ${MAPR_SSL_OPTS} -Dmapr.library.flatclass"
export MAPR_HIVE_LOGIN_OPTS="${MAPR_HIVE_LOGIN_OPTS} ${MAPR_JAAS_CONFIG_OPTS} ${MAPR_ZOOKEEPER_OPTS} ${MAPR_SSL_OPTS} -Dmapr.library.flatclass"

# ensure we can properly find the PAM shared libraries
libpamDir="/lib64"
if [ ! -d "/lib64" ]; then
  libpamDir="/lib"
fi
LIBPAM=`find $libpamDir/libpam.so* 2>/dev/null | head -1`
if [ "$LIBPAM" != "" ]; then
  export LD_PRELOAD=$LIBPAM
fi

# Options relevant to HBase servers and clients
# HBase clients do not need to authenticate to Zookeeper even in a secured HBase cluster
# Replace ${SIMPLE_LOGIN_OPTS} in the following line with ${KERBEROS_LOGIN_OPTS} or
#  ${HYBRID_LOGIN_OPTS} for Kerberos secured HBase clusters running on secured MapR cluster
export MAPR_HBASE_CLIENT_OPTS="${SIMPLE_LOGIN_OPTS} -Dzookeeper.sasl.client=false"
# Replace ${SIMPLE_LOGIN_OPTS} in the following line with ${KERBEROS_LOGIN_OPTS}
#  for Kerberos secured HBase clusters
export MAPR_HBASE_SERVER_OPTS="${SIMPLE_LOGIN_OPTS} ${MAPR_SSL_OPTS} -Dmapr.library.flatclass"

export HADOOP_TASKTRACKER_OPTS="${HADOOP_TASKTRACKER_OPTS} ${MAPR_LOGIN_OPTS}"
export HADOOP_JOBTRACKER_OPTS="${HADOOP_JOBTRACKER_OPTS} ${MAPR_LOGIN_OPTS}"

# Zookeeper server options
export ZOOKEEPER_SERVER_OPTS="${ZOOKEEPER_SERVER_OPTS} ${MAPR_JAAS_CONFIG_OPTS} ${MAPR_ZOOKEEPER_OPTS}"
export JAVA_HOME=/etc/alternatives/java_sdk