ElasticSearch 是一个高可用开源全文检索和分析组件。提供存储服务，搜索服务，大数据准实时分析等。一般用于提供一些提供复杂搜索的应。我们为什么要选择 ElasticSearch ？因为它是一个准实时的搜索工具，在一般情况下延时少于一秒，它还支持物理上的水平扩展，并拥有一套分布式协调的管理功能操作比较简单，包括一些 restful 风格的API 等等，接下来我们就来进入今天的正题。

前期准备

1.安装 jdk1.8

yum install java

2.配置源

rpm --import https://artifacts.elastic.co/GPG-KEY-elasticsearch
配置elasticsearch
cat >/etc/yum.repos.d/elasticsearch.repo <<EOF
[elasticsearch-5.x]
name=Elasticsearch repository for 5.x packages
baseurl=https://artifacts.elastic.co/packages/5.x/yum
gpgcheck=1
gpgkey=https://artifacts.elastic.co/GPG-KEY-elasticsearch
enabled=1
autorefresh=1
type=rpm-md
EOF
配置kibana
cat >/etc/yum.repos.d/kibana.repo << EOF
[kibana-5.x]
name=Kibana repository for 5.x packages
baseurl=https://artifacts.elastic.co/packages/5.x/yum
gpgcheck=1
gpgkey=https://artifacts.elastic.co/GPG-KEY-elasticsearch
enabled=1
autorefresh=1
type=rpm-md
EOF

3.安装

yum install elasticsearch -y
yum install kibana -y

4.修改 es 配置文件

mkdir /data/es-data/logs -p
chown -R elasticsearch.elasticsearch /data/es-data/logs
[root@linux-node2 ~]# grep -v "^#" /etc/elasticsearch/elasticsearch.yml |grep -v "^$"
cluster.name: lx
node.name: linux-node2.lx.com
path.data: /data/es-data
path.logs: /data/es-data/logs
http.port: 9200
discovery.zen.ping.unicast.hosts: ["192.168.56.12", "192.168.56.14"]
discovery.zen.minimum_master_nodes: 1

5.修改内核参数

vim /etc/security/limits.conf
* soft nofile 655350
* hard nofile 655350
vim /etc/sysctl.conf
fs.file-max=655350
调整内存大小
cat /data/elasticsearch/config/jvm.options   (可设置为物理内存的一半)
-Xms8g
-Xmx8g
sysctl -w vm.max_map_count=262144

6.修改 kibana 配置文件

[root@linux-node5 elasticsearch]# grep -v "^#" /etc/kibana/kibana.yml |grep -v "^$"
server.port: 5601
server.host: "0.0.0.0"
server.name: "lx"
elasticsearch.url: "http://192.168.56.14:9200"
elasticsearch.username: "elastic"
elasticsearch.password: "changeme"

7.x-pack 破解

编辑配置文件

cat LicenseVerifier.java
package org.elasticsearch.license;
import java.nio.*;
import java.util.*;
import java.security.*;
import org.elasticsearch.common.xcontent.*;
import org.apache.lucene.util.*;
import org.elasticsearch.common.io.*;
import java.io.*;
public class LicenseVerifier
{
public static boolean verifyLicense(final License license, final byte[] encryptedPublicKeyData) {
return true;
}
public static boolean verifyLicense(final License license) {
return true;
}
}

安装 java-devel

yum install java-devel -y
编译生成LicenseVerifier.class
javac -cp "/usr/share/elasticsearch/lib/elasticsearch-5.6.4.jar:/usr/share/elasticsearch/lib/lucene-core-6.6.1.jar:/usr/share/elasticsearch/plugins/x-pack/x-pack-5.6.4.jar" LicenseVerifier.java
查看生成的LicenseVerifier.class类文件
ll LicenseVerifier.class
替换class文件
cp /usr/share/elasticsearch/plugins/x-pack/x-pack-5.6.4.jar /tmp/test
cd /tmp/test
jar xvf x-pack-5.6.4.jar
cd /tmp/test/org/elasticsearch/license
rm LicenseVerifier.class -f
cp /root/LicenseVerifier.class /tmp/test/org/elasticsearch/license/  #拷贝上文编译生成的java类文件
jar cvf x-pack-5.6.4.jar /tmp/test/*                             #压缩
\cp /tmp/test/x-pack-5.6.4.jar /usr/share/elasticsearch/plugins/x-pack/    #拷贝到原来的x-pack目录

注意：x-pack-5.6.4.jar 应该拷贝到两个 elasticsearch 集群插件，即目录 /usr/share/elasticsearch/plugins/x-pack/ 

重启 es 集群

systemct restart elasticsearch

获取 license 证书 

https://license.elastic.co/registration

通过填写的邮件获取官方发来的邮件获取证书

cat li-xiang-d28260d9-6c96-4dd2-92dc-2f14a9787903-v5.json
{"license":{"uid":"d28260d9-6c96-4dd2-92dc-2f14a9787903","type":"platinum","issue_date_in_millis":1511740800000,"expiry_date_in_millis":1827359999000,"max_nodes":100,"issued_to":"li xiang (ceshi)","issuer":"Web Form","signature":"AAAAAwAAAA2lsE14rcZQLw3V/JuUAAABmC9ZN0hjZDBGYnVyRXpCOW5Bb3FjZDAxOWpSbTVoMVZwUzRxVk1PSmkxaktJRVl5MUYvUWh3bHZVUTllbXNPbzBUemtnbWpBbmlWRmRZb25KNFlBR2x0TXc2K2p1Y1VtMG1UQU9TRGZVSGRwaEJGUjE3bXd3LzRqZ05iLzRteWFNekdxRGpIYlFwYkJiNUs0U1hTVlJKNVlXekMrSlVUdFIvV0FNeWdOYnlESDc3MWhlY3hSQmdKSjJ2ZTcvYlBFOHhPQlV3ZHdDQ0tHcG5uOElCaDJ4K1hob29xSG85N0kvTWV3THhlQk9NL01VMFRjNDZpZEVXeUtUMXIyMlIveFpJUkk2WUdveEZaME9XWitGUi9WNTZVQW1FMG1DenhZU0ZmeXlZakVEMjZFT2NvOWxpZGlqVmlHNC8rWVVUYzMwRGVySHpIdURzKzFiRDl4TmM1TUp2VTBOUlJZUlAyV0ZVL2kvVk10L0NsbXNFYVZwT3NSU082dFNNa2prQ0ZsclZ4NTltbU1CVE5lR09Bck93V2J1Y3c9PQAAAQBE870HCp9jTj22SVdEP2uAFLF6ikLdDJFtSlbHuYOki6rPtWxIcw8y+WWpPUT5e8lYZw0GkB8CYT5hFLXZTrBqTsNbYRZ3ABdHS1BnKBlkfE4PPcvnTTt4HtBCawNHaW0BNWQ2BA2fFj6zX3HyYJ8q5OaQk/il0t5f/TkIuf0yo3Y/F3rzDIXOHieBFnVvfG3EpNB4lo+G+e6vPMeOW86PsF9eKvQ24nucGDK3S4WSpwxbP1gZFuTdmE9zDguJhRHrtJ6k//A/Q0Fbo8gFntWgHNp+1OJEklH+VBBZUWo17UMGnjjxDrGlLTZcsz2BPmk7mC7e8gBQY4z7zJ/SgnsU","start_date_in_millis":1511740800000}}

此证书的时间为1年使用时间，你可以通过下面网站进行换算http://tool.chinaz.com/Tools/unixtime.aspx，目前我申请了一个10 年的时间

将 "type":"basic" 替换为 "type":"platinum"    # 基础班变更为铂金版
将 "expiry_date_in_millis":1543363199999 替换为 "expiry_date_in_millis":1827359999000 # 1年变为10年

查看当前的 license

curl -XGET -u elastic:changeme 'http://127.0.0.1:9200/_license'
{"license" : {"status" : "active","uid" : "21389992-4010-4d2c-917b-94b4e3d5a1dc","type" : "trial","issue_date" : "2017-11-27T05:12:27.999Z","issue_date_in_millis" : 1511759547999,"expiry_date" : "2017-12-27T05:12:27.999Z","expiry_date_in_millis" : 1514351547999,"max_nodes" : 1000,"issued_to" : "lx","issuer" : "elasticsearch","start_date_in_millis" : -1}
}

替换 license

curl -XPUT -u elastic:changeme 'http://127.0.0.1:9200/_xpack/license?acknowledge=true' -d @li-xiang-d28260d9-6c96-4dd2-92dc-2f14a9787903-v5.json

重启 es 集群

systemctl restart elasticsearch

查看 license

[root@linux-node5 license]# curl -XGET -u elastic:changeme 'http://127.0.0.1:9200/_license'
{"license" : {"status" : "active","uid" : "d28260d9-6c96-4dd2-92dc-2f14a9787903","type" : "platinum","issue_date" : "2017-11-27T00:00:00.000Z","issue_date_in_millis" : 1511740800000,"expiry_date" : "2027-11-27T23:59:59.000Z","expiry_date_in_millis" : 1827359999000,"max_nodes" : 100,"issued_to" : "li xiang (ceshi)","issuer" : "Web Form","start_date_in_millis" : 1511740800000}
}

配置 X- Pack 告警

本文配置 X- Pack 告警是通过 filebeat 收集 Nginx 的日志来做的模拟

配置邮件报警

1.安装 Nginx

2.给 Nginx 配置 json 格式的数据

    log_format json '{"@timestamp":"$time_iso8601",''"@version":"1",''"client":"$remote_addr",''"url":"$uri",''"status":"$status",''"domain":"$host",''"host":"$server_addr",''"size":$body_bytes_sent,''"responsetime":$request_time,''"referer": "$http_referer",''"ua": "$http_user_agent"''}';access_log  logs/access.log  json;

3.安装 filebeta

安装
yum install -y filebeta
配置filebeta
[root@linux-node4 filebeat]# grep -v "^  #" filebeat.yml|grep -v "^$"|grep -v "^#"
filebeat.prospectors:
- input_type: logpaths:- /usr/local/nginx/logs/access.logjson.keys_under_root: truejson.overwrite_keys: true
output.elasticsearch:hosts: ["localhost:9200"]username: "elastic"password: "changeme"
参考网址:https://www.elastic.co/guide/en/beats/filebeat/current/configuration-filebeat-options.html#config-json
http://www.iyunw.cn/archives/filebeat-shou-ji-json-ge-shi-de-nginx-ri-zhi-fa-song-gei-elasticsearch/
启动filebeta服务
systemctl status filebeat.service

这里默认进入 es 的索引是 filebeat-{%}

4.登陆 kibana 添加索引

5.模拟一些 404  的页面，让其展示

for i in {1..1000};do curl http://192.168.56.14:/lx-0$i;sleep 1;done

6.添加报警触发器(收集每分钟内超过访问状态大于 400 且个数超过 20 报警)

Watch JSON

{"trigger": {"schedule": {"interval": "1m"}},"input": {"search": {"request": {"search_type": "query_then_fetch","indices": ["filebeat-2017*"],"types": [],"body": {"size": 0,"query": {"bool": {"must": [{"query_string": {"query": "status:>=400"}},{"range": {"@timestamp": {"gte": "now-1m"}}}]}},"sort": [{"@timestamp": {"order": "desc"}}]}}}},"condition": {"compare": {"ctx.payload.hits.total": {"gt": 20}}},"actions": {"elasticsearch": {"throttle_period_in_millis": 60000,"email": {"profile": "outlook","attachments": {"attached_data": {"data": {"format": "json"}}},"priority": "high","to": ["lixiang@xxxxx.com"],"subject": "Nginx {{ctx.payload.hits.total}} errors","body": {"text": "nginx 404 错误过多,请注意查看"}}}}
}

7.这一步特别重要需要在 ES 配置文件设置否则无法报警(因为我公司使用的是  Exchange 客户端)

xpack.notification.email.account:exchange_account:profile: outlookemail_defaults:from: warning@xxxxx.comsmtp:auth: truestarttls.enable: truehost: smtp.partner.outlook.cnport: 587user: 123@xxxxxx.compassword: 233g@123
参考网址：https://www.elastic.co/guide/en/x-pack/5.6/actions-email.html #邮件设置

8. 查看邮件报警状态以及 kibana 中的状态

对于上面的内容大家可以参看下面的 url 来了解其中的含义

参考网址: 

https://www.elastic.co/guide/en/x-pack/5.6/xpack-alerting.html 对集群和索引事件的警告 Xpack document

配置 Webhook 报警

对于 webhook 的报警,我们需要前期做一下工作需要了解一个东西 web.py,具体  URL 链接大家可以访问这个地方 http://webpy.org/tutorial3.zh-cn#starting

1.用 web.py 启动一个 webhook 的监听

[root@linux-node5 ~]# cat webhooks.py
#!/usr/bin/evn python
# -*- coding:utf-8 -*-
import web
import os
import demjson
import sys
reload(sys)
sys.setdefaultencoding( "utf-8" )
urls = ('/log_event_watch','abc',
)
class abc:def POST(self):data = web.data()print datacmd = '''curl -G -v "http://abc.com/abc/" --data "user=lixiang" --data "media=all" --data-urlencode "subject=test" --data-urlencode "message=%s"''' %(data)os.system(cmd)
if __name__ == "__main__":app = web.application(urls, globals())app.run()
运行 python webhooks.py 9000

注意 ：urls，因为我的 Watcher ID 为 "log_event_watch"

2.再次回到我们的 kibana 界面, "Management"->"Edit"

查看 Watches

查看 Wathch Json 内容

{"trigger": {"schedule": {"interval": "1m"}},"input": {"search": {"request": {"search_type": "query_then_fetch","indices": ["nginx_access*"],"types": [],"body": {"size": 0,"query": {"bool": {"must": [{"query_string": {"query": "status:>=400"}},{"range": {"@timestamp": {"gte": "now-1m"}}}]}},"sort": [{"@timestamp": {"order": "desc"}}]}}}},"condition": {"compare": {"ctx.payload.hits.total": {"gt": 5}}},"actions": {"email": {"throttle_period_in_millis": 60000,"email": {"profile": "outlook","attachments": {"attached_data": {"data": {"format": "json"}}},"priority": "high","to": ["lixiang@xxxxx.com"],"subject": "Nginx {{ctx.payload.hits.total}} errors","body": {"text": "nginx 404 错误过多,请注意查看"}}},"webhook": {"condition": {"compare": {"ctx.payload.hits.total": {"gt": 5}}},"webhook": {"scheme": "http","host": "192.168.56.15","port": 9000,"method": "post","path": "/{{watch_id}}","params": {},"headers": {},"body": "Encountered {{ctx.payload.hits.total}} errors"}}}
}

3.模拟触发报警

for i in {1..200};do curl http://192.168.56.14:/lx-0$i;sleep 2;done

4.查看结果，这里就不贴出来了(微信，短信，邮件都能收到报警)

5.这就是实现报警消息附带 URL 地址

官方参考网址:

https://www.elastic.co/guide/en/x-pack/5.6/watcher-getting-started.html

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