一、简介
ELK由Elasticsearch、Logstash和Kibana三部分组件组成；
Elasticsearch是个开源分布式搜索引擎，它的特点有：分布式，零配置，自动发现，索引自动分片，索引副本机制，restful风格接口，多数据源，自动搜索负载等。
Logstash是一个完全开源的工具，它可以对你的日志进行收集、分析，并将其存储供以后使用
kibana 是一个开源和免费的工具，它可以为 Logstash 和 ElasticSearch 提供的日志分析友好的 Web 界面，可以帮助您汇总、分析和搜索重要数据日志。
二、核心组件
Logstash: logstash server端用来搜集日志；
Elasticsearch: 存储各类日志；
Kibana: web化接口用作查寻和可视化日志；
Filebeat是一个日志文件托运工具，在你的服务器上安装客户端后，filebeat会监控日志目录或者指定的日志文件，追踪读取这些文件（追踪文件的变化，不停的读），并且转发这些信息到elasticsearch或者logstarsh中存放。
三、安装脚本
#!/bin/bash
#mail:xuel@anchnet.com
#data:2017/9/7
#AutoInstall ELK scripts
#Software:elasticsearch-5.4.1/logstash-5.4.1/filebeat-5.4.1/kibana-5.4.1
clear
echo "#############################################################################"
echo "# Auto Install ELK. ##"
echo "# Press Ctrl + C to cancel ##"
echo "# Any key to continue ##"
echo "# Softwae:elasticsearch-5.4.1/logstash-5.4.1/filebeat-5.4.1/kibana-5.4.1 ##"
echo "#############################################################################"
read -n 1
software_dir="/usr/local/software"
elasticsearch_url="https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-5.4.1.tar.gz"
kibana_url="https://artifacts.elastic.co/downloads/kibana/kibana-5.4.1-linux-x86_64.tar.gz"
logstash_url="https://artifacts.elastic.co/downloads/logstash/logstash-5.4.1.tar.gz"
filebeat_url="https://artifacts.elastic.co/downloads/beats/filebeat/filebeat-5.4.1-linux-x86_64.tar.gz"
sys_version=`cat /etc/redhat-release |awk '{print $4}'|cut -d. -f1`
IP=`ip addr|grep "inet "|grep -v 127.0.0.1|awk '{print $2}'|cut -d/ -f1`
jvm_conf="/usr/local/elasticsearch/config/jvm.options"
sys_mem=`free -m|grep Mem:|awk '{print $2}'|awk '{sum+=$1} END {print sum/1024}'|cut -d. -f1`
#wget software
wget_fun() {
if [ ! -d ${software_dir} ];then
mkdir -p ${software_dir} && cd ${software_dir}
else
cd ${software_dir}
fi
for software in $elasticsearch_url $kibana_url $logstash_url $filebeat_url
do
wget -c $software
done
clear
}
#initial system:install java wget;set hostname;disable firewalld
init_sys() {
[ -f /etc/init.d/functions ] && . /etc/init.d/functions
[ "${sys_version}" != "7" ] && echo "Error:This Scripts Support Centos7.xx" && exit 1
[ $(id -u) != "0" ] && echo "Error: You must be root to run this script" && exit 1
sed -i "s/SELINUX=enforcing/SELINUX=disabled/" /etc/selinux/config
setenforce 0
yum install -y java-1.8.0-openjdk wget
hostnamectl set-hostname elk-server
systemctl stop firewalld
cat >>/etc/security/limits.conf<<EOF
* soft nofile 65536
* hard nofile 65536
* soft nGproc 65536
* hard nproc 65536
EOF
}
#install elasticsearch
install_elasticsearch() {
cd $software_dir
tar zxf elasticsearch-5.4.1.tar.gz
mv elasticsearch-5.4.1 /usr/local/elasticsearch
mkdir -p /usr/local/elasticsearch/data /usr/local/elasticsearch/logs
useradd elasticsearch
chown -R elasticsearch:elasticsearch /usr/local/elasticsearch
echo "vm.max_map_count = 655360" >>/etc/sysctl.conf && sysctl -p
if [ ${sys_mem} -eq 0 ];then
sed -i "s#`grep "^-Xmx" ${jvm_conf}`#"-Xmx512m"#g" ${jvm_conf}
sed -i "s#`grep "^-Xms" ${jvm_conf}`#"-Xms512m"#g" ${jvm_conf}
else
sed -i "s#`grep "^-Xmx" ${jvm_conf}`#"-Xmx${sys_mem}g"#g" ${jvm_conf}
sed -i "s#`grep "^-Xms" ${jvm_conf}`#"-Xms${sys_mem}g"#g" ${jvm_conf}
fi
cat >>/usr/local/elasticsearch/config/elasticsearch.yml<<EOF
cluster.name: my-application
node.name: elk-server
path.data: /usr/local/elasticsearch/data
path.logs: /usr/local/elasticsearch/logs
network.host: 127.0.0.1
http.port: 9200
discovery.zen.ping.unicast.hosts: ["elk-server"]
EOF
su - elasticsearch -c "nohup /usr/local/elasticsearch/bin/elasticsearch &"
}
#install logstash
install_logstash() {
cd $software_dir
tar -zxf logstash-5.4.1.tar.gz
mv logstash-5.4.1 /usr/local/logstash
cat>/usr/local/logstash/config/01-syslog.conf<<EOF
input {
beats {
port => "5044"
}
}
output {
elasticsearch {
hosts => "127.0.0.1:9200"
}
stdout { codec => rubydebug }
}
EOF
nohup /usr/local/logstash/bin/logstash -f /usr/local/logstash/config/01-syslog.conf & >/dev/null
}
#install filebeat
install_filebeat() {
cd $software_dir
tar -zxf filebeat-5.4.1-linux-x86_64.tar.gz
mv filebeat-5.4.1-linux-x86_64 /usr/local/filebeat
cat >/usr/local/filebeat/filebeat.yml<<EOF
filebeat.prospectors:
- input_type: log
paths:
- /var/log/*.log
output.logstash:
hosts: ["127.0.0.1:5044"]
EOF
cd /usr/local/filebeat/
nohup /usr/local/filebeat/filebeat & >/dev/null
}
#install kibana
install_kibana() {
cd $software_dir
tar -zxf kibana-5.4.1-linux-x86_64.tar.gz
mv kibana-5.4.1-linux-x86_64 /usr/local/kibana
cat >> /usr/local/kibana/config/kibana.yml <<EOF
server.port: 5601
server.host: "0.0.0.0"
elasticsearch.url: "http://127.0.0.1:9200"
EOF
nohup /usr/local/kibana/bin/kibana & >/dev/null
}
check() {
port=$1
program=$2
check_port=`netstat -lntup|grep ${port}|wc -l`
check_program=`ps -ef|grep ${program}|grep -v grep|wc -l`
if [ $check_port -gt 0 ] && [ $check_program -gt 0 ];then
action "${program} run is ok!" /bin/true
else
action "${program} run is error!" /bin/false
fi
}
main() {
init_sys
wget_fun
install_elasticsearch
install_filebeat
install_logstash
install_kibana
echo -e "\033[32m Checking Elasticsearch...\033[0m"
sleep 20
check :9200 "elasticsearch"
echo -e "\033[32m Checking Logstash...\033[0m"
sleep 2
check ":9600" "logstash"
echo -e "\033[32m Checking Kibana...\033[0m"
sleep 2
check ":5601" "kibana"
action "ELK install is success!" /bin/true
echo "url:http://$IP:5601"
}
main
四、脚本安装
安装完成访问：http://IP:5601即可访问
五、配置
通过web界面访问，创建index patterns
六、查看日志与dashboard
