graylog2 install script for RHEL/CentOS 6

graylog2-bootstrap.sh

#!/bin/bash

MONGODB_REPO="/etc/yum.repos.d/10gen-mongodb.repo"
CENTOS_REPO="/etc/yum.repos.d/CentOS-Base.repo"
EPEL_REPO="/etc/yum.repos.d/epel.repo"
PASSENGER_REPO="/etc/yum.repos.d/passenger.repo"
APP_ROOT="/opt"

[ -f "$APP_ROOT" ] || mkdir -p $APP_ROOT

if [ -f ${MONGODB_REPO} ]; then
  echo "$MONGODB_REPO found"
else
cat << 'EOF' > ${MONGODB_REPO}
[10gen]
name=10gen Repository
baseurl=http://downloads-distro.mongodb.org/repo/redhat/os/$basearch
gpgcheck=0
EOF
fi

if [ -f ${CENTOS_REPO} ]; then
	echo "$CENTOS_REPO found"
else
	echo "Creating $CENTOS_REPO"
cat << 'EOF' > ${CENTOS_REPO}
# CentOS-Base.repo for RHEL6
[base]
name=CentOS-6 - Base
mirrorlist=http://mirrorlist.centos.org/?release=6&arch=$basearch&repo=os
#baseurl=http://mirror.centos.org/centos/6/os/$basearch/
gpgcheck=1
gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6

#released updates
[update]
name=CentOS-6 - Updates
mirrorlist=http://mirrorlist.centos.org/?release=6&arch=$basearch&repo=updates
#baseurl=http://mirror.centos.org/centos/6/updates/$basearch/
gpgcheck=1
gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6
EOF
fi

if [ -f ${EPEL_REPO} ]; then
	echo "$EPEL_REPO found"
else
	echo "Creating $EPEL_REPO"
cat << 'EOF' > ${EPEL_REPO}
[epel]
name=Extra Packages for Enterprise Linux 6 - $basearch
#baseurl=http://download.fedoraproject.org/pub/epel/6/$basearch
mirrorlist=https://mirrors.fedoraproject.org/metalink?repo=epel-6&arch=$basearch
failovermethod=priority
enabled=1
gpgcheck=0
EOF
fi

if [ -f ${PASSENGER_REPO} ]; then
	echo "$PASSENGER_REPO found"
else
	echo "Creating $PASSENGER_REPO"
cat << 'EOF' > ${PASSENGER_REPO}
### Name: Phusion Passenger RPM Repository for Red Hat Enterprise 6
### URL: http://passenger.stealthymonkeys.com/
[passenger]
name = Red Hat Enterprise $releasever - Phusion Passenger
baseurl = http://passenger.stealthymonkeys.com/rhel/$releasever/$basearch
mirrorlist = http://passenger.stealthymonkeys.com/rhel/mirrors
#mirrorlist = file:///etc/yum.repos.d/mirrors-passenger
enabled = 1
gpgcheck = 0
EOF
fi

echo "Installing MongoDB..."
yum install -y mongo-10gen mongo-10gen-server

echo "Installing init script of MongoDB..."
chkconfig --level 2345 mongod on

echo "Starting MongoDB..."
service mongod start


echo "Installing ElasticSearch..."
cd $APP_ROOT
curl -L http://download.elasticsearch.org/elasticsearch/elasticsearch/elasticsearch-0.20.1.tar.gz | tar -xz
ln -s elasticsearch-0.20.1/ elasticsearch

echo "Installing ElasticSearch service wrapper..."
cd elasticsearch/bin
curl -L http://github.com/elasticsearch/elasticsearch-servicewrapper/tarball/master | tar -xz
mv elasticsearch-elasticsearch-servicewrapper-*/service .
rm -rf elasticsearch-elasticsearch-servicewrapper-*

cd $APP_ROOT
useradd elasticsearch -d $APP_ROOT/elasticsearch
chown -R elasticsearch:elasticsearch elasticsearch*

sed -i -e "s|# cluster.name: elasticsearch|cluster.name: graylog2|" $APP_ROOT/elasticsearch/config/elasticsearch.yml

sed -i -e "s|set.default.ES_HOME=<Path to ElasticSearch Home>|set.default.ES_HOME=$APP_ROOT/elasticsearch|" $APP_ROOT/elasticsearch/bin/service/elasticsearch.conf

sed -i -e "s|#RUN_AS_USER=|RUN_AS_USER=elasticsearch|" $APP_ROOT/elasticsearch/bin/service/elasticsearch

echo "Installing init script of ElasticSearch..."
$APP_ROOT/elasticsearch/bin/service/elasticsearch install

echo "Starting ElasticSearch..."
service elasticsearch start

echo "Installing graylog2-server..."
cd $APP_ROOT
curl -L https://github.com/downloads/Graylog2/graylog2-server/graylog2-server-0.9.6p1.tar.gz | tar -xz
ln -s graylog2-server-0.9.6p1 graylog2-server

cd graylog2-server
mv graylog2.conf.example graylog2.conf
cd /etc
ln -s /windmill/graylog2-server/graylog2.conf graylog2.conf

sed -i -e 's|mongodb_useauth = true|mongodb_useauth = false|' /etc/graylog2.conf

echo "Installing init script of graylog2-server..."
cat << 'EOF' > /etc/init.d/graylog2-server
#! /bin/sh
### BEGIN INIT INFO
# Provides:          gaylog2-server
# Required-Start:    $all
# Required-Stop:     $all
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: Graylog2-server init script
# Description: Graylog2-server init script
### END INIT INFO
 
## Source function library.
. /etc/init.d/functions
 
NAME="graylog2-server"
GRAYLOG2_HOME=
GRAYLOG2_JAR=$GRAYLOG2_HOME/graylog2-server.jar
GRAYLOG2_CONF="/etc/graylog2.conf"
GRAYLOG2_OUT="/var/log/graylog2.log"
PID_DIR="/var/run/graylog2"
PID_FILE="${PID_DIR}/${NAME}.pid"
LOCK_FILE="/var/lock/subsys/${NAME}"
 
JAVA="/usr/bin/java"
JAVA_OPTS="-server -Xms512m -Xmx512m"
RUN_AS_USER=root
 
if [ ! -d "$PID_DIR" ]; then
  mkdir "$PID_DIR"
  chown $RUN_AS_USER "$PID_DIR"
fi
 
if [ ! -r "$GRAYLOG2_JAR" ]; then
   echo "Cannot find $GRAYLOG2_JAR"
   echo "${GRAYLOG2_JAR} is absent or does not have read permission"
   exit 1
fi
 
touch "$GRAYLOG2_OUT"
chown $RUN_AS_USER "$GRAYLOG2_OUT"
 
start() {
  echo "Starting $NAME: "
  COMMAND="$JAVA $JAVA_OPTS -jar $GRAYLOG2_JAR -f $GRAYLOG2_CONF -p $PID_FILE >> \"$GRAYLOG2_OUT\" 2>&1 &"
  daemon --check=${NAME} --user=${RUN_AS_USER} --pidfile=${PID_FILE} ${COMMAND}
  RETVAL=$?
  [ $RETVAL -eq 0 ] && touch $LOCK_FILE
  return $RETVAL
}
 
stop() {
  echo "Stoping $NAME: "
  killproc -p ${PID_FILE} -d 5 ${NAME}
  RETVAL=$?
  [ $RETVAL -eq 0 ] && rm -f $LOCK_FILE
  return $RETVAL  
}
 
restart() {
  stop
  sleep 1
  start
}
 
dump() {
  echo "Dumping $NAME: "
  PID=`cat $PID_FILE`
  kill -3 $PID
  RETVAL=$?
  [ $RETVAL -eq 0 ] && success $"Dumped $NAME." || failure $"Failed to dump $NAME."
  return $RETVAL
}
 
rh_status() {
  status -p ${PID_FILE} ${NAME}
}
 
rh_status_q() {
  rh_status >/dev/null 2>&1
}
 
case "$1" in
  start)
    rh_status_q && exit 0
    start
    ;;
  stop)
    rh_status_q || exit 0
    stop
    ;;
  restart)
    restart
    ;;
  status)
    rh_status
    ;;
  dump)
    rh_status_q || exit 0
    dump
    ;; 
  condrestart|try-restart)
    rh_status_q || exit 0
    restart
    ;;
  *)
    echo "Usage: $0 {start|stop|status|restart|condrestart|try-restart|dump}"
    exit 1
esac
 
exit $?
EOF

sed -i -e "s|GRAYLOG2_HOME=|GRAYLOG2_HOME=$APP_ROOT/elasticsearch" /etc/init.d/graylog2-server
chmod u+x /etc/init.d/graylog2-server
chkconfig graylog2-server on

echo "Starting graylog2-server..."
service graylog2-server start

echo "Installing graylog2-web-interface..."
yum install -y ruby ruby-devel ruby-rdoc rubygems 
gem install bundler

yum install -y httpd mod_passenger

cd $APP_ROOT
curl -L https://github.com/downloads/Graylog2/graylog2-web-interface/graylog2-web-interface-0.9.6p1.tar.gz | tar -xz
ln -s graylog2-web-interface-0.9.6p1 graylog2-web-interface

cd graylog2-web-interface
bundle install

chown -R apache:apache $APP_ROOT/graylog2-web-interface*

cat << EOF >> /etc/httpd/conf.d/passenger.conf 
<VirtualHost *:80>
    ServerName graylog2.example.com
    ServerAlias graylog2.example.com
    DocumentRoot $APP_ROOT/graylog2-web-interface/public
    SetEnv MONGOID_HOST 'localhost'
    SetEnv MONGOID_PORT '27017'
    SetEnv MONGOID_DATABASE 'graylog2'
    <Directory $APP_ROOT/graylog2-web-interface/public>
        Allow from all
        Options -MultiViews
    </Directory>
</VirtualHost>
EOF

chkconfig --level 2345 httpd on
service httpd restart