solr/bin/install_solr_service.sh - lucene-solr - Git at Google

 #!/usr/bin/env bash
 # Licensed to the Apache Software Foundation (ASF) under one or more
 # contributor license agreements.  See the NOTICE file distributed with
 # this work for additional information regarding copyright ownership.
 # The ASF licenses this file to You under the Apache License, Version 2.0
 # (the "License"); you may not use this file except in compliance with
 # the License.  You may obtain a copy of the License at
 #
 #     http://www.apache.org/licenses/LICENSE-2.0
 #
 # Unless required by applicable law or agreed to in writing, software
 # distributed under the License is distributed on an "AS IS" BASIS,
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.

 if [[ $EUID -ne 0 ]]; then
   echo -e "\nERROR: This script must be run as root\n" 1>&2
   exit 1
 fi

 print_usage() {
   ERROR_MSG="$1"

   if [ "$ERROR_MSG" != "" ]; then
     echo -e "\nERROR: $ERROR_MSG\n" 1>&2
   fi

   echo ""
   echo "Usage: install_solr_service.sh <path_to_solr_distribution_archive> [OPTIONS]"
   echo ""
   echo "  The first argument to the script must be a path to a Solr distribution archive, such as solr-5.0.0.tgz"
   echo "    (only .tgz or .zip are supported formats for the archive)"
   echo ""
   echo "  Supported OPTIONS include:"
   echo ""
   echo "    -d     Directory for live / writable Solr files, such as logs, pid files, and index data; defaults to /var/solr"
   echo ""
   echo "    -i     Directory to extract the Solr installation archive; defaults to /opt/"
   echo "             The specified path must exist prior to using this script."
   echo ""
   echo "    -p     Port Solr should bind to; default is 8983"
   echo ""
   echo "    -s     Service name; defaults to solr"
   echo ""
   echo "    -u     User to own the Solr files and run the Solr process as; defaults to solr"
   echo "             This script will create the specified user account if it does not exist."
   echo ""
   echo "    -f     Upgrade Solr. Overwrite symlink and init script of previous installation."
   echo ""
   echo "    -n     Do not start Solr service after install, and do not abort on missing Java"
   echo ""
   echo " NOTE: Must be run as the root user"
   echo ""
 } # end print_usage

 print_error() {
   echo $1
   exit 1
 }

 # Locate *NIX distribution by looking for match from various detection strategies
 # We start with /etc/os-release, as this will also work for Docker containers
 for command in "grep -E \"^NAME=\" /etc/os-release" \
                "lsb_release -i" \
                "cat /proc/version" \
                "uname -a" ; do
     distro_string=$(eval $command 2>/dev/null)
     unset distro
     if [[ ${distro_string,,} == *"debian"* ]]; then
       distro=Debian
     elif [[ ${distro_string,,} == *"red hat"* ]]; then
       distro=RedHat
     elif [[ ${distro_string,,} == *"centos"* ]]; then
       distro=CentOS
     elif [[ ${distro_string,,} == *"ubuntu"* ]]; then
       distro=Ubuntu
     elif [[ ${distro_string,,} == *"suse"* ]]; then
       distro=SUSE
     elif [[ ${distro_string,,} == *"darwin"* ]]; then
       echo "Sorry, this script does not support macOS. You'll need to setup Solr as a service manually using the documentation provided in the Solr Reference Guide."
       echo "You could also try installing via Homebrew (http://brew.sh/), e.g. brew install solr"
       exit 1
     fi
     if [[ $distro ]] ; then break ; fi
 done
 if [[ ! $distro ]] ; then
   echo -e "\nERROR: Unable to auto-detect your *NIX distribution!\nYou'll need to setup Solr as a service manually using the documentation provided in the Solr Reference Guide.\n" 1>&2
   exit 1
 fi

 if [ -z "$1" ]; then
   print_usage "Must specify the path to the Solr installation archive, such as solr-5.0.0.tgz"
   exit 1
 fi

 SOLR_ARCHIVE=$1
 if [ ! -f "$SOLR_ARCHIVE" ]; then
   print_usage "Specified Solr installation archive $SOLR_ARCHIVE not found!"
   exit 1
 fi

 # strip off path info
 SOLR_INSTALL_FILE=${SOLR_ARCHIVE##*/}
 is_tar=true
 if [ ${SOLR_INSTALL_FILE: -4} == ".tgz" ]; then
   SOLR_DIR=${SOLR_INSTALL_FILE%.tgz}
 elif [ ${SOLR_INSTALL_FILE: -4} == ".zip" ]; then
   SOLR_DIR=${SOLR_INSTALL_FILE%.zip}
   is_tar=false
 else
   print_usage "Solr installation archive $SOLR_ARCHIVE is invalid, expected a .tgz or .zip file!"
   exit 1
 fi

 SOLR_START=true
 if [ $# -gt 1 ]; then
   shift
   while true; do
     case $1 in
         -i)
             if [[ -z "$2" || "${2:0:1}" == "-" ]]; then
               print_usage "Directory path is required when using the $1 option!"
               exit 1
             fi
             SOLR_EXTRACT_DIR=$2
             shift 2
         ;;
         -d)
             if [[ -z "$2" || "${2:0:1}" == "-" ]]; then
               print_usage "Directory path is required when using the $1 option!"
               exit 1
             fi
             SOLR_VAR_DIR="$2"
             shift 2
         ;;
         -u)
             if [[ -z "$2" || "${2:0:1}" == "-" ]]; then
               print_usage "Username is required when using the $1 option!"
               exit 1
             fi
             SOLR_USER="$2"
             shift 2
         ;;
         -s)
             if [[ -z "$2" || "${2:0:1}" == "-" ]]; then
               print_usage "Service name is required when using the $1 option!"
               exit 1
             fi
             SOLR_SERVICE="$2"
             shift 2
         ;;
         -p)
             if [[ -z "$2" || "${2:0:1}" == "-" ]]; then
               print_usage "Port is required when using the $1 option!"
               exit 1
             fi
             SOLR_PORT="$2"
             shift 2
         ;;
         -f)
             SOLR_UPGRADE="YES"
             shift 1
         ;;
         -n)
             SOLR_START=false
             shift 1
         ;;
         -help|-usage)
             print_usage ""
             exit 0
         ;;
         --)
             shift
             break
         ;;
         *)
             if [ "$1" != "" ]; then
               print_usage "Unrecognized or misplaced argument: $1!"
               exit 1
             else
               break # out-of-args, stop looping
             fi
         ;;
     esac
   done
 fi

 # Test for availability of needed tools
 if [[ $is_tar ]] ; then
   tar --version &>/dev/null     || print_error "Script requires the 'tar' command"
 else
   unzip -hh &>/dev/null         || print_error "Script requires the 'unzip' command"
 fi
 if [[ $SOLR_START == "true" ]] ; then
   service --version &>/dev/null || service --help &>/dev/null || print_error "Script requires the 'service' command"
   java -version &>/dev/null     || print_error "Solr requires java, please install or set JAVA_HOME properly"
 fi
 lsof -h &>/dev/null             || echo "We recommend installing the 'lsof' command for more stable start/stop of Solr"


 if [ -z "$SOLR_EXTRACT_DIR" ]; then
   SOLR_EXTRACT_DIR=/opt
 fi

 if [ ! -d "$SOLR_EXTRACT_DIR" ]; then
   print_usage "Installation directory $SOLR_EXTRACT_DIR not found! Please create it before running this script."
   exit 1
 fi

 if [ -z "$SOLR_SERVICE" ]; then
   SOLR_SERVICE=solr
 fi

 if [ -z "$SOLR_VAR_DIR" ]; then
   SOLR_VAR_DIR="/var/$SOLR_SERVICE"
 fi

 if [ -z "$SOLR_USER" ]; then
   SOLR_USER=solr
 fi

 if [ -z "$SOLR_PORT" ]; then
   SOLR_PORT=8983
 fi

 if [ -z "$SOLR_UPGRADE" ]; then
   SOLR_UPGRADE=NO
 fi

 if [ ! "$SOLR_UPGRADE" = "YES" ]; then
   if [ -f "/etc/init.d/$SOLR_SERVICE" ]; then
     print_usage "/etc/init.d/$SOLR_SERVICE already exists! Perhaps Solr is already setup as a service on this host? To upgrade Solr use the -f option."
     exit 1
   fi

   if [ -e "$SOLR_EXTRACT_DIR/$SOLR_SERVICE" ]; then
     print_usage "$SOLR_EXTRACT_DIR/$SOLR_SERVICE already exists! Please move this directory / link or choose a different service name using the -s option."
     exit 1
   fi
 fi

 # stop running instance
 if [ -f "/etc/init.d/$SOLR_SERVICE" ]; then
   echo -e "\nStopping Solr instance if exists ...\n"
   service "$SOLR_SERVICE" stop
 fi

 # create user if not exists
 solr_uid="`id -u "$SOLR_USER"`"
 if [ $? -ne 0 ]; then
   echo "Creating new user: $SOLR_USER"
   if [ "$distro" == "RedHat" ] || [ "$distro" == "CentOS" ] ; then
     adduser --system -U -m --home-dir "$SOLR_VAR_DIR" "$SOLR_USER"
   elif [ "$distro" == "SUSE" ]; then
     useradd --system -U -m --home-dir "$SOLR_VAR_DIR" "$SOLR_USER"
   else
     adduser --system --shell /bin/bash --group --disabled-password --home "$SOLR_VAR_DIR" "$SOLR_USER"
   fi
 fi

 # extract
 SOLR_INSTALL_DIR="$SOLR_EXTRACT_DIR/$SOLR_DIR"
 if [ ! -d "$SOLR_INSTALL_DIR" ]; then

   echo -e "\nExtracting $SOLR_ARCHIVE to $SOLR_EXTRACT_DIR\n"

   if $is_tar ; then
     tar zxf "$SOLR_ARCHIVE" -C "$SOLR_EXTRACT_DIR"
   else
     unzip -q "$SOLR_ARCHIVE" -d "$SOLR_EXTRACT_DIR"
   fi

   if [ ! -d "$SOLR_INSTALL_DIR" ]; then
     echo -e "\nERROR: Expected directory $SOLR_INSTALL_DIR not found after extracting $SOLR_ARCHIVE ... script fails.\n" 1>&2
     exit 1
   fi

   chown -R root: "$SOLR_INSTALL_DIR"
   find "$SOLR_INSTALL_DIR" -type d -print0 | xargs -0 chmod 0755
   find "$SOLR_INSTALL_DIR" -type f -print0 | xargs -0 chmod 0644
   chmod -R 0755 "$SOLR_INSTALL_DIR/bin"
 else
   echo -e "\nWARNING: $SOLR_INSTALL_DIR already exists! Skipping extract ...\n"
 fi

 # create a symlink for easier scripting
 if [ -h "$SOLR_EXTRACT_DIR/$SOLR_SERVICE" ]; then
   echo -e "\nRemoving old symlink $SOLR_EXTRACT_DIR/$SOLR_SERVICE ...\n"
   rm "$SOLR_EXTRACT_DIR/$SOLR_SERVICE"
 fi
 if [ -e "$SOLR_EXTRACT_DIR/$SOLR_SERVICE" ]; then
   echo -e "\nWARNING: $SOLR_EXTRACT_DIR/$SOLR_SERVICE is not symlink! Skipping symlink update ...\n"
 else
   echo -e "\nInstalling symlink $SOLR_EXTRACT_DIR/$SOLR_SERVICE -> $SOLR_INSTALL_DIR ...\n"
   ln -s "$SOLR_INSTALL_DIR" "$SOLR_EXTRACT_DIR/$SOLR_SERVICE"
 fi

 # install init.d script
 echo -e "\nInstalling /etc/init.d/$SOLR_SERVICE script ...\n"
 cp "$SOLR_INSTALL_DIR/bin/init.d/solr" "/etc/init.d/$SOLR_SERVICE"
 chmod 0744 "/etc/init.d/$SOLR_SERVICE"
 chown root: "/etc/init.d/$SOLR_SERVICE"
 # do some basic variable substitution on the init.d script
 sed_expr1="s#SOLR_INSTALL_DIR=.*#SOLR_INSTALL_DIR=\"$SOLR_EXTRACT_DIR/$SOLR_SERVICE\"#"
 sed_expr2="s#SOLR_ENV=.*#SOLR_ENV=\"/etc/default/$SOLR_SERVICE.in.sh\"#"
 sed_expr3="s#RUNAS=.*#RUNAS=\"$SOLR_USER\"#"
 sed_expr4="s#Provides:.*#Provides: $SOLR_SERVICE#"
 sed -i -e "$sed_expr1" -e "$sed_expr2" -e "$sed_expr3" -e "$sed_expr4" "/etc/init.d/$SOLR_SERVICE"

 # install/move configuration
 if [ ! -d /etc/default ]; then
   mkdir /etc/default
   chown root: /etc/default
   chmod 0755 /etc/default
 fi
 if [ -f "$SOLR_VAR_DIR/solr.in.sh" ]; then
   echo -e "\nMoving existing $SOLR_VAR_DIR/solr.in.sh to /etc/default/$SOLR_SERVICE.in.sh ...\n"
   mv "$SOLR_VAR_DIR/solr.in.sh" "/etc/default/$SOLR_SERVICE.in.sh"
 elif [ -f "/etc/default/$SOLR_SERVICE.in.sh" ]; then
   echo -e "\n/etc/default/$SOLR_SERVICE.in.sh already exist. Skipping install ...\n"
 else
   echo -e "\nInstalling /etc/default/$SOLR_SERVICE.in.sh ...\n"
   cp "$SOLR_INSTALL_DIR/bin/solr.in.sh" "/etc/default/$SOLR_SERVICE.in.sh"
   mv "$SOLR_INSTALL_DIR/bin/solr.in.sh" "$SOLR_INSTALL_DIR/bin/solr.in.sh.orig"
   mv "$SOLR_INSTALL_DIR/bin/solr.in.cmd" "$SOLR_INSTALL_DIR/bin/solr.in.cmd.orig"
   echo "SOLR_PID_DIR=\"$SOLR_VAR_DIR\"
 SOLR_HOME=\"$SOLR_VAR_DIR/data\"
 LOG4J_PROPS=\"$SOLR_VAR_DIR/log4j2.xml\"
 SOLR_LOGS_DIR=\"$SOLR_VAR_DIR/logs\"
 SOLR_PORT=\"$SOLR_PORT\"
 " >> "/etc/default/$SOLR_SERVICE.in.sh"
 fi
 chown root:${SOLR_USER} "/etc/default/$SOLR_SERVICE.in.sh"
 chmod 0640 "/etc/default/$SOLR_SERVICE.in.sh"

 # install data directories and files
 mkdir -p "$SOLR_VAR_DIR/data"
 mkdir -p "$SOLR_VAR_DIR/logs"
 if [ -f "$SOLR_VAR_DIR/data/solr.xml" ]; then
   echo -e "\n$SOLR_VAR_DIR/data/solr.xml already exists. Skipping install ...\n"
 else
   cp "$SOLR_INSTALL_DIR/server/solr/"{solr.xml,zoo.cfg} "$SOLR_VAR_DIR/data/"
 fi
 if [ -f "$SOLR_VAR_DIR/log4j2.xml" ]; then
   echo -e "\n$SOLR_VAR_DIR/log4j2.xml already exists. Skipping install ...\n"
 else
   cp "$SOLR_INSTALL_DIR/server/resources/log4j2.xml" "$SOLR_VAR_DIR/log4j2.xml"
 fi
 chown -R "$SOLR_USER:" "$SOLR_VAR_DIR"
 find "$SOLR_VAR_DIR" -type d -print0 | xargs -0 chmod 0750
 find "$SOLR_VAR_DIR" -type f -print0 | xargs -0 chmod 0640

 # configure autostart of service
 if [[ "$distro" == "RedHat" || "$distro" == "CentOS" || "$distro" == "SUSE" ]]; then
   chkconfig "$SOLR_SERVICE" on
 else
   update-rc.d "$SOLR_SERVICE" defaults
 fi
 echo "Service $SOLR_SERVICE installed."
 echo "Customize Solr startup configuration in /etc/default/$SOLR_SERVICE.in.sh"

 # start service
 if [[ $SOLR_START == "true" ]] ; then
   service "$SOLR_SERVICE" start
   sleep 5
   service "$SOLR_SERVICE" status
 else
   echo "Not starting Solr service (option -n given). Start manually with 'service $SOLR_SERVICE start'"
 fi
	#!/usr/bin/env bash
	# Licensed to the Apache Software Foundation (ASF) under one or more
	# contributor license agreements. See the NOTICE file distributed with
	# this work for additional information regarding copyright ownership.
	# The ASF licenses this file to You under the Apache License, Version 2.0
	# (the "License"); you may not use this file except in compliance with
	# the License. You may obtain a copy of the License at
	#
	# http://www.apache.org/licenses/LICENSE-2.0
	#
	# Unless required by applicable law or agreed to in writing, software
	# distributed under the License is distributed on an "AS IS" BASIS,
	# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	# See the License for the specific language governing permissions and
	# limitations under the License.

	if [[ $EUID -ne 0 ]]; then
	echo -e "\nERROR: This script must be run as root\n" 1>&2
	exit 1
	fi

	print_usage() {
	ERROR_MSG="$1"

	if [ "$ERROR_MSG" != "" ]; then
	echo -e "\nERROR: $ERROR_MSG\n" 1>&2
	fi

	echo ""
	echo "Usage: install_solr_service.sh <path_to_solr_distribution_archive> [OPTIONS]"
	echo ""
	echo " The first argument to the script must be a path to a Solr distribution archive, such as solr-5.0.0.tgz"
	echo " (only .tgz or .zip are supported formats for the archive)"
	echo ""
	echo " Supported OPTIONS include:"
	echo ""
	echo " -d Directory for live / writable Solr files, such as logs, pid files, and index data; defaults to /var/solr"
	echo ""
	echo " -i Directory to extract the Solr installation archive; defaults to /opt/"
	echo " The specified path must exist prior to using this script."
	echo ""
	echo " -p Port Solr should bind to; default is 8983"
	echo ""
	echo " -s Service name; defaults to solr"
	echo ""
	echo " -u User to own the Solr files and run the Solr process as; defaults to solr"
	echo " This script will create the specified user account if it does not exist."
	echo ""
	echo " -f Upgrade Solr. Overwrite symlink and init script of previous installation."
	echo ""
	echo " -n Do not start Solr service after install, and do not abort on missing Java"
	echo ""
	echo " NOTE: Must be run as the root user"
	echo ""
	} # end print_usage

	print_error() {
	echo $1
	exit 1
	}

	# Locate *NIX distribution by looking for match from various detection strategies
	# We start with /etc/os-release, as this will also work for Docker containers
	for command in "grep -E \"^NAME=\" /etc/os-release" \
	"lsb_release -i" \
	"cat /proc/version" \
	"uname -a" ; do
	distro_string=$(eval $command 2>/dev/null)
	unset distro
	if [[ ${distro_string,,} == "debian" ]]; then
	distro=Debian
	elif [[ ${distro_string,,} == "red hat" ]]; then
	distro=RedHat
	elif [[ ${distro_string,,} == "centos" ]]; then
	distro=CentOS
	elif [[ ${distro_string,,} == "ubuntu" ]]; then
	distro=Ubuntu
	elif [[ ${distro_string,,} == "suse" ]]; then
	distro=SUSE
	elif [[ ${distro_string,,} == "darwin" ]]; then
	echo "Sorry, this script does not support macOS. You'll need to setup Solr as a service manually using the documentation provided in the Solr Reference Guide."
	echo "You could also try installing via Homebrew (http://brew.sh/), e.g. brew install solr"
	exit 1
	fi
	if [[ $distro ]] ; then break ; fi
	done
	if [[ ! $distro ]] ; then
	echo -e "\nERROR: Unable to auto-detect your *NIX distribution!\nYou'll need to setup Solr as a service manually using the documentation provided in the Solr Reference Guide.\n" 1>&2
	exit 1
	fi

	if [ -z "$1" ]; then
	print_usage "Must specify the path to the Solr installation archive, such as solr-5.0.0.tgz"
	exit 1
	fi

	SOLR_ARCHIVE=$1
	if [ ! -f "$SOLR_ARCHIVE" ]; then
	print_usage "Specified Solr installation archive $SOLR_ARCHIVE not found!"
	exit 1
	fi

	# strip off path info
	SOLR_INSTALL_FILE=${SOLR_ARCHIVE##*/}
	is_tar=true
	if [ ${SOLR_INSTALL_FILE: -4} == ".tgz" ]; then
	SOLR_DIR=${SOLR_INSTALL_FILE%.tgz}
	elif [ ${SOLR_INSTALL_FILE: -4} == ".zip" ]; then
	SOLR_DIR=${SOLR_INSTALL_FILE%.zip}
	is_tar=false
	else
	print_usage "Solr installation archive $SOLR_ARCHIVE is invalid, expected a .tgz or .zip file!"
	exit 1
	fi

	SOLR_START=true
	if [ $# -gt 1 ]; then
	shift
	while true; do
	case $1 in
	-i)
	if [[ -z "$2" \|\| "${2:0:1}" == "-" ]]; then
	print_usage "Directory path is required when using the $1 option!"
	exit 1
	fi
	SOLR_EXTRACT_DIR=$2
	shift 2
	;;
	-d)
	if [[ -z "$2" \|\| "${2:0:1}" == "-" ]]; then
	print_usage "Directory path is required when using the $1 option!"
	exit 1
	fi
	SOLR_VAR_DIR="$2"
	shift 2
	;;
	-u)
	if [[ -z "$2" \|\| "${2:0:1}" == "-" ]]; then
	print_usage "Username is required when using the $1 option!"
	exit 1
	fi
	SOLR_USER="$2"
	shift 2
	;;
	-s)
	if [[ -z "$2" \|\| "${2:0:1}" == "-" ]]; then
	print_usage "Service name is required when using the $1 option!"
	exit 1
	fi
	SOLR_SERVICE="$2"
	shift 2
	;;
	-p)
	if [[ -z "$2" \|\| "${2:0:1}" == "-" ]]; then
	print_usage "Port is required when using the $1 option!"
	exit 1
	fi
	SOLR_PORT="$2"
	shift 2
	;;
	-f)
	SOLR_UPGRADE="YES"
	shift 1
	;;
	-n)
	SOLR_START=false
	shift 1
	;;
	-help\|-usage)
	print_usage ""
	exit 0
	;;
	--)
	shift
	break
	;;
	*)
	if [ "$1" != "" ]; then
	print_usage "Unrecognized or misplaced argument: $1!"
	exit 1
	else
	break # out-of-args, stop looping
	fi
	;;
	esac
	done
	fi

	# Test for availability of needed tools
	if [[ $is_tar ]] ; then
	tar --version &>/dev/null \|\| print_error "Script requires the 'tar' command"
	else
	unzip -hh &>/dev/null \|\| print_error "Script requires the 'unzip' command"
	fi
	if [[ $SOLR_START == "true" ]] ; then
	service --version &>/dev/null \|\| service --help &>/dev/null \|\| print_error "Script requires the 'service' command"
	java -version &>/dev/null \|\| print_error "Solr requires java, please install or set JAVA_HOME properly"
	fi
	lsof -h &>/dev/null \|\| echo "We recommend installing the 'lsof' command for more stable start/stop of Solr"


	if [ -z "$SOLR_EXTRACT_DIR" ]; then
	SOLR_EXTRACT_DIR=/opt
	fi

	if [ ! -d "$SOLR_EXTRACT_DIR" ]; then
	print_usage "Installation directory $SOLR_EXTRACT_DIR not found! Please create it before running this script."
	exit 1
	fi

	if [ -z "$SOLR_SERVICE" ]; then
	SOLR_SERVICE=solr
	fi

	if [ -z "$SOLR_VAR_DIR" ]; then
	SOLR_VAR_DIR="/var/$SOLR_SERVICE"
	fi

	if [ -z "$SOLR_USER" ]; then
	SOLR_USER=solr
	fi

	if [ -z "$SOLR_PORT" ]; then
	SOLR_PORT=8983
	fi

	if [ -z "$SOLR_UPGRADE" ]; then
	SOLR_UPGRADE=NO
	fi

	if [ ! "$SOLR_UPGRADE" = "YES" ]; then
	if [ -f "/etc/init.d/$SOLR_SERVICE" ]; then
	print_usage "/etc/init.d/$SOLR_SERVICE already exists! Perhaps Solr is already setup as a service on this host? To upgrade Solr use the -f option."
	exit 1
	fi

	if [ -e "$SOLR_EXTRACT_DIR/$SOLR_SERVICE" ]; then
	print_usage "$SOLR_EXTRACT_DIR/$SOLR_SERVICE already exists! Please move this directory / link or choose a different service name using the -s option."
	exit 1
	fi
	fi

	# stop running instance
	if [ -f "/etc/init.d/$SOLR_SERVICE" ]; then
	echo -e "\nStopping Solr instance if exists ...\n"
	service "$SOLR_SERVICE" stop
	fi

	# create user if not exists
	solr_uid="`id -u "$SOLR_USER"`"
	if [ $? -ne 0 ]; then
	echo "Creating new user: $SOLR_USER"
	if [ "$distro" == "RedHat" ] \|\| [ "$distro" == "CentOS" ] ; then
	adduser --system -U -m --home-dir "$SOLR_VAR_DIR" "$SOLR_USER"
	elif [ "$distro" == "SUSE" ]; then
	useradd --system -U -m --home-dir "$SOLR_VAR_DIR" "$SOLR_USER"
	else
	adduser --system --shell /bin/bash --group --disabled-password --home "$SOLR_VAR_DIR" "$SOLR_USER"
	fi
	fi

	# extract
	SOLR_INSTALL_DIR="$SOLR_EXTRACT_DIR/$SOLR_DIR"
	if [ ! -d "$SOLR_INSTALL_DIR" ]; then

	echo -e "\nExtracting $SOLR_ARCHIVE to $SOLR_EXTRACT_DIR\n"

	if $is_tar ; then
	tar zxf "$SOLR_ARCHIVE" -C "$SOLR_EXTRACT_DIR"
	else
	unzip -q "$SOLR_ARCHIVE" -d "$SOLR_EXTRACT_DIR"
	fi

	if [ ! -d "$SOLR_INSTALL_DIR" ]; then
	echo -e "\nERROR: Expected directory $SOLR_INSTALL_DIR not found after extracting $SOLR_ARCHIVE ... script fails.\n" 1>&2
	exit 1
	fi

	chown -R root: "$SOLR_INSTALL_DIR"
	find "$SOLR_INSTALL_DIR" -type d -print0 \| xargs -0 chmod 0755
	find "$SOLR_INSTALL_DIR" -type f -print0 \| xargs -0 chmod 0644
	chmod -R 0755 "$SOLR_INSTALL_DIR/bin"
	else
	echo -e "\nWARNING: $SOLR_INSTALL_DIR already exists! Skipping extract ...\n"
	fi

	# create a symlink for easier scripting
	if [ -h "$SOLR_EXTRACT_DIR/$SOLR_SERVICE" ]; then
	echo -e "\nRemoving old symlink $SOLR_EXTRACT_DIR/$SOLR_SERVICE ...\n"
	rm "$SOLR_EXTRACT_DIR/$SOLR_SERVICE"
	fi
	if [ -e "$SOLR_EXTRACT_DIR/$SOLR_SERVICE" ]; then
	echo -e "\nWARNING: $SOLR_EXTRACT_DIR/$SOLR_SERVICE is not symlink! Skipping symlink update ...\n"
	else
	echo -e "\nInstalling symlink $SOLR_EXTRACT_DIR/$SOLR_SERVICE -> $SOLR_INSTALL_DIR ...\n"
	ln -s "$SOLR_INSTALL_DIR" "$SOLR_EXTRACT_DIR/$SOLR_SERVICE"
	fi

	# install init.d script
	echo -e "\nInstalling /etc/init.d/$SOLR_SERVICE script ...\n"
	cp "$SOLR_INSTALL_DIR/bin/init.d/solr" "/etc/init.d/$SOLR_SERVICE"
	chmod 0744 "/etc/init.d/$SOLR_SERVICE"
	chown root: "/etc/init.d/$SOLR_SERVICE"
	# do some basic variable substitution on the init.d script
	sed_expr1="s#SOLR_INSTALL_DIR=.*#SOLR_INSTALL_DIR=\"$SOLR_EXTRACT_DIR/$SOLR_SERVICE\"#"
	sed_expr2="s#SOLR_ENV=.*#SOLR_ENV=\"/etc/default/$SOLR_SERVICE.in.sh\"#"
	sed_expr3="s#RUNAS=.*#RUNAS=\"$SOLR_USER\"#"
	sed_expr4="s#Provides:.*#Provides: $SOLR_SERVICE#"
	sed -i -e "$sed_expr1" -e "$sed_expr2" -e "$sed_expr3" -e "$sed_expr4" "/etc/init.d/$SOLR_SERVICE"

	# install/move configuration
	if [ ! -d /etc/default ]; then
	mkdir /etc/default
	chown root: /etc/default
	chmod 0755 /etc/default
	fi
	if [ -f "$SOLR_VAR_DIR/solr.in.sh" ]; then
	echo -e "\nMoving existing $SOLR_VAR_DIR/solr.in.sh to /etc/default/$SOLR_SERVICE.in.sh ...\n"
	mv "$SOLR_VAR_DIR/solr.in.sh" "/etc/default/$SOLR_SERVICE.in.sh"
	elif [ -f "/etc/default/$SOLR_SERVICE.in.sh" ]; then
	echo -e "\n/etc/default/$SOLR_SERVICE.in.sh already exist. Skipping install ...\n"
	else
	echo -e "\nInstalling /etc/default/$SOLR_SERVICE.in.sh ...\n"
	cp "$SOLR_INSTALL_DIR/bin/solr.in.sh" "/etc/default/$SOLR_SERVICE.in.sh"
	mv "$SOLR_INSTALL_DIR/bin/solr.in.sh" "$SOLR_INSTALL_DIR/bin/solr.in.sh.orig"
	mv "$SOLR_INSTALL_DIR/bin/solr.in.cmd" "$SOLR_INSTALL_DIR/bin/solr.in.cmd.orig"
	echo "SOLR_PID_DIR=\"$SOLR_VAR_DIR\"
	SOLR_HOME=\"$SOLR_VAR_DIR/data\"
	LOG4J_PROPS=\"$SOLR_VAR_DIR/log4j2.xml\"
	SOLR_LOGS_DIR=\"$SOLR_VAR_DIR/logs\"
	SOLR_PORT=\"$SOLR_PORT\"
	" >> "/etc/default/$SOLR_SERVICE.in.sh"
	fi
	chown root:${SOLR_USER} "/etc/default/$SOLR_SERVICE.in.sh"
	chmod 0640 "/etc/default/$SOLR_SERVICE.in.sh"

	# install data directories and files
	mkdir -p "$SOLR_VAR_DIR/data"
	mkdir -p "$SOLR_VAR_DIR/logs"
	if [ -f "$SOLR_VAR_DIR/data/solr.xml" ]; then
	echo -e "\n$SOLR_VAR_DIR/data/solr.xml already exists. Skipping install ...\n"
	else
	cp "$SOLR_INSTALL_DIR/server/solr/"{solr.xml,zoo.cfg} "$SOLR_VAR_DIR/data/"
	fi
	if [ -f "$SOLR_VAR_DIR/log4j2.xml" ]; then
	echo -e "\n$SOLR_VAR_DIR/log4j2.xml already exists. Skipping install ...\n"
	else
	cp "$SOLR_INSTALL_DIR/server/resources/log4j2.xml" "$SOLR_VAR_DIR/log4j2.xml"
	fi
	chown -R "$SOLR_USER:" "$SOLR_VAR_DIR"
	find "$SOLR_VAR_DIR" -type d -print0 \| xargs -0 chmod 0750
	find "$SOLR_VAR_DIR" -type f -print0 \| xargs -0 chmod 0640

	# configure autostart of service
	if [[ "$distro" == "RedHat" \|\| "$distro" == "CentOS" \|\| "$distro" == "SUSE" ]]; then
	chkconfig "$SOLR_SERVICE" on
	else
	update-rc.d "$SOLR_SERVICE" defaults
	fi
	echo "Service $SOLR_SERVICE installed."
	echo "Customize Solr startup configuration in /etc/default/$SOLR_SERVICE.in.sh"

	# start service
	if [[ $SOLR_START == "true" ]] ; then
	service "$SOLR_SERVICE" start
	sleep 5
	service "$SOLR_SERVICE" status
	else
	echo "Not starting Solr service (option -n given). Start manually with 'service $SOLR_SERVICE start'"
	fi