#!/usr/bin/env bash

# 本脚本为一键式安装 ELK 脚本

# 执行脚本前，请先执行以下命令，创建用户

# groupadd elk

# useradd -g elk elk

# passwd elk

# 获取当前设备IP

ipaddr='127.0.0.1'

function getDeviceIp() {

ipaddr=$(ip addr | awk '/^[0-9]+: / {}; /inet.*global/ {print gensub(/(.*)\/(.*)/, "\\1", "g", $2)}')

}

# 检查文件是否存在，不存在则退出脚本

checkFileExist() {

if [ ! -f "$1" ]

then

echo "关键文件 $1 找不到，脚本执行结束"

exit 0

fi

}

init() {

mkdir -p ${ELASTIC_SOFTWARE_PATH}

getDeviceIp

}

# 安装 elasticsearch

installElasticsearch() {

cd ${ELASTIC_SOFTWARE_PATH}

wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-${version}.tar.gz

tar -xzf elasticsearch-${version}.tar.gz

}

installRuby() {

cd ${RUBY_SOFTWARE_PATH}

wget https://cache.ruby-lang.org/pub/ruby/2.5/ruby-2.5.0.tar.gz

tar -xzf ruby-2.5.0.tar.gz

cd ruby-2.5.0

./configure

make & make install

}

# 安装 logstash

installLogstash() {

cd ${ELASTIC_SOFTWARE_PATH}

wget https://artifacts.elastic.co/downloads/logstash/logstash-${version}.tar.gz

tar -xzf logstash-${version}.tar.gz

}

# 安装 kibana

installKibana() {

cd ${ELASTIC_SOFTWARE_PATH}

wget https://artifacts.elastic.co/downloads/kibana/kibana-${version}-linux-x86_64.tar.gz

tar -xzf kibana-${version}-linux-x86_64.tar.gz

}

# 安装 filebeat

installFilebeat() {

cd ${ELASTIC_SOFTWARE_PATH}

wget https://artifacts.elastic.co/downloads/beats/filebeat/filebeat-${version}-linux-x86_64.tar.gz

tar -zxf filebeat-${version}-linux-x86_64.tar.gz

}

# 替换 Elasticsearch 配置

# 1. 替换 192.168.0.1 为本机 IP

replaceElasticsearchConfig() {

cp ${ELASTIC_SOFTWARE_PATH}/elasticsearch-${version}/config/elasticsearch.yml ${ELASTIC_SOFTWARE_PATH}/elasticsearch-${version}/config/elasticsearch.yml.bak

sed -i "s/#network.host: 192.168.0.1/network.host: ${IP}/g" ${ELASTIC_SOFTWARE_PATH}/elasticsearch-${version}/config/elasticsearch.yml

touch ${ELASTIC_SOFTWARE_PATH}/elasticsearch-${version}/bin/nohup.out

}

replaceLogstashConfig() {

cp ${ELASTIC_SOFTWARE_PATH}/logstash-${version}/config/logstash.yml ${ELASTIC_SOFTWARE_PATH}/logstash-${version}/config/logstash.yml.bak

sed -i "s/# http.host: \"127.0.0.1\"/ http.host: ${IP}/g" ${ELASTIC_SOFTWARE_PATH}/logstash-${version}/config/logstash.yml

touch ${ELASTIC_SOFTWARE_PATH}/logstash-${version}/bin/nohup.out

cd ${ELASTIC_SOFTWARE_PATH}/logstash-${version}/bin

wget "https://gitee.com/turnon/linux-tutorial/raw/master/codes/linux/soft/elk/config/logstash.conf"

}

# 替换 Kibana 配置

# 1. 替换 localhost 为本机 IP

replaceKibanaConfig() {

cp ${ELASTIC_SOFTWARE_PATH}/kibana-${version}-linux-x86_64/config/kibana.yml ${ELASTIC_SOFTWARE_PATH}/kibana-${version}-linux-x86_64/config/kibana.yml.bak

sed -i "s/#server.host: \"localhost\"/server.host: ${IP}/g" ${ELASTIC_SOFTWARE_PATH}/kibana-${version}-linux-x86_64/config/kibana.yml

sed -i "s/#elasticsearch.url: \"http://localhost:9200\"/#elasticsearch.url: \"${IP}\"/g" ${ELASTIC_SOFTWARE_PATH}/kibana-${version}-linux-x86_64/config/kibana.yml

touch ${ELASTIC_SOFTWARE_PATH}/kibana-${version}-linux-x86_64/bin/nohup.out

}

# 替换 Filebeat 配置

replaceFilebeatConfig() {

cp ${ELASTIC_SOFTWARE_PATH}/filebeat-${version}-linux-x86_64/filebeat.yml ${ELASTIC_SOFTWARE_PATH}/filebeat-${version}-linux-x86_64/filebeat.yml.bak

cd ${ELASTIC_SOFTWARE_PATH}/filebeat-${version}-linux-x86_64

wget https://github.com/dunwu/OS/blob/master/codes/deploy/tool/elk/config/filebeat.yml

sed -i 's/127.0.0.1/'"${IP}"'/g' ${ELASTIC_SOFTWARE_PATH}/filebeat-${version}-linux-x86_64/filebeat.yml

}

# 为 elk.elk 用户设置权限

setPrivilegeForUser() {

chown -R elk.elk ${ELASTIC_SOFTWARE_PATH}

chown -R elk.elk /var/log/

}

######################################## MAIN ########################################

echo -e "\n>>>>>>>>> install elk"

version=6.1.1

RUBY_SOFTWARE_PATH=/opt/ruby

ELASTIC_SOFTWARE_PATH=/opt/elastic

ELASTIC_SETTINGS_PATH=/opt/elastic/settings

init

installElasticsearch

replaceElasticsearchConfig

installLogstash

replaceLogstashConfig

installKibana

replaceKibanaConfig

installFilebeat

replaceFilebeatConfig

# 最后，将启动脚本下载到本地

mkdir -p /home/zp/script

wget -P /home/zp/script "https://gitee.com/turnon/linux-tutorial/raw/master/codes/linux/soft/elk/boot-elk.sh"

#setPrivilegeForUser