架构说明

1. 在需要采集日志的服务器上部署Filebeat服务，它将采集到的日志数据推送到Kafka集群；
2. Logstash服务通过input插件读取Kafka集群对应主题的数据，期间可以使用filter插件对数据做自定义过滤解析处理，然后通过output插件将数据推送到Elasticsearch集群中；
3. 最后用户通过Kibana服务提供的web界面，对索引数据做汇总，分析，搜索和展示等功能。

本文旨在部署安全可靠的生产架构，对ELK做XPack安全加固，对Kafka做SASL安全加固！

---

准备工作

主机名	设备IP	角色	系统版本
es83	192.168.100.83	filebeat，es，logstash，kafka，kibana	CentOS 7.6
es86	192.168.100.86	es，logstash，kafka	CentOS 7.6
es87	192.168.100.87	es，logstash，kafka	CentOS 7.6

本文的ELK全家桶版本为7.2.0，Kafka版本为2.12-2.3.0

---

环境配置

主要的操作有：关闭selinux安全机制，关闭firewalld防火墙，关闭swap交换内存空间，文件及内存限制配置，设置jvm参数，创建普通用户，准备磁盘存储目录等；建议做好服务器间的免密登陆操作。

auto_elk_env.sh

#!/bin/bash
echo "##### Update /etc/hosts #####"
cat >> /etc/hosts <<EOF
192.168.100.83 es83
192.168.100.86 es86
192.168.100.87 es87
EOF

echo "##### Stop firewalld #####"
systemctl stop firewalld
systemctl disable firewalld

echo "##### Close selinux #####"
setenforce 0
sed -i "s/SELINUX=enforcing/SELINUX=disabled/g" /etc/selinux/config

echo "##### Close swap #####"
swapoff -a

# 提示：修改完该文件后，需重新登录终端才可生效，可通过ulimit -a查看。
echo "##### Modify /etc/security/limits.conf #####"
cat > /etc/security/limits.conf <<EOF
* soft nofile 65536
* hard nofile 131072
* soft nproc 65536
* hard nproc 65536
* soft memlock unlimited
* hard memlock unlimited
EOF

echo "##### Modify /etc/sysctl.conf #####"
cat >> /etc/sysctl.conf <<EOF
vm.max_map_count=562144
EOF
sysctl -p

echo "##### Create user（密码随意） #####"
useradd elkuser
echo 123456 | passwd --stdin elkuser

echo "##### 配置SSH免密通信 #####"
ssh-keygen   # 一路回车即可
ssh-copy-id 192.168.100.83
ssh-copy-id 192.168.100.86
ssh-copy-id 192.168.100.87

---

Elasticsearch集群部署

Elasticsearch 是一个分布式、RESTful风格的搜索和数据分析引擎；它实现了用于全文检索的倒排索引，而且为每个数据都编入了索引，搜索速度非常快；它具有可扩展性和弹性，每秒钟能处理海量事件，并且它适用于所有数据类型，例如结构化数据、非结构化数据、地理位置等。

笔者在生产环境上，为Elasticsearch分配了30G内存（最大不要超过32G），6块446G的SSD磁盘，并使用G1的垃圾回收策略，关于硬件配置大家根据实际情况来分配使用！

提示：笔者已事先下载好了所有软件包到服务器上；本文的三个es节点默认都做主节点和数据节点，当使用xpack加密时，主节点也必须做数据节点，否则加密配置写入不进es存储！

在本文中，笔者直接在83节点上完成了es集群的部署，请仔细阅读下方的命令！

# 下载方式：wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-7.2.0-linux-x86_64.tar.gz
echo "##### 解压Elasticsearch #####"
[root@es83 ~]# cd /home/elkuser/
[root@es83 elkuser]# tar -xvf elasticsearch-7.2.0-linux-x86_64.tar.gz

echo "##### 修改jvm文件 #####"
[root@es83 elkuser]# cd ./elasticsearch-7.2.0/
[root@es83 elasticsearch-7.2.0]# sed -i -e 's/1g/30g/g' -e '36,38s/^-/#&/g' ./config/jvm.options
[root@es83 elasticsearch-7.2.0]# sed -i -e 'N;38 a -XX:+UseG1GC \n-XX:MaxGCPauseMillis=50' ./config/jvm.options

echo "##### 生成关键证书文件 #####"
[root@es83 elasticsearch-7.2.0]# ./bin/elasticsearch-certutil ca
......
Please enter the desired output file [elastic-stack-ca.p12]: 回车Enter
Enter password for elastic-stack-ca.p12 : 回车Enter

echo "##### 利用关键证书生成所有es节点证书文件 #####"
[root@es83 elasticsearch-7.2.0]# ./bin/elasticsearch-certutil cert --ca elastic-stack-ca.p12 --ip 192.168.100.83
......
Enter password for CA (elastic-stack-ca.p12) : 回车Enter
Please enter the desired output file [elastic-certificates.p12]: es83.p12
Enter password for es83.p12 : 回车Enter

[root@es83 elasticsearch-7.2.0]# ./bin/elasticsearch-certutil cert --ca elastic-stack-ca.p12 --ip 192.168.100.86
......
Enter password for CA (elastic-stack-ca.p12) : 回车Enter
Please enter the desired output file [elastic-certificates.p12]: es86.p12
Enter password for es86.p12 : 回车Enter

[root@es83 elasticsearch-7.2.0]# ./bin/elasticsearch-certutil cert --ca elastic-stack-ca.p12 --ip 192.168.100.87
......
Enter password for CA (elastic-stack-ca.p12) : 回车Enter
Please enter the desired output file [elastic-certificates.p12]: es87.p12
Enter password for es87.p12 : 回车Enter

echo "##### 利用关键证书生成后续logstash所需证书 #####"
[root@es83 elasticsearch-7.2.0]# openssl pkcs12 -in elastic-stack-ca.p12 -clcerts -nokeys > root.cer
[root@es83 elasticsearch-7.2.0]# openssl x509 -in root.cer -out root.pem

echo "##### 利用关键证书生成后续kibana所需证书 #####"
[root@es83 elasticsearch-7.2.0]# ./bin/elasticsearch-certutil cert --ca elastic-stack-ca.p12 -name "CN=something,OU=Consulting Team,DC=mydomain,DC=com"
......
Enter password for CA (elastic-stack-ca.p12) : 回车Enter
Please enter the desired output file [CN=something,OU=Consulting Team,DC=mydomain,DC=com.p12]: client.p12
Enter password for client.p12 : 回车Enter

echo "##### 移动所生成的证书文件到指定目录下 #####"
[root@es83 elasticsearch-7.2.0]# cp *.p12 ./config/

echo "##### 修改es配置文件 #####"
[root@es83 elasticsearch-7.2.0]# cat > ./config/elasticsearch.yml <<EOF
cluster.name: chilu_elk
node.name: es83
node.master: true
node.data: true
path.data: /logdata/data1,/logdata/data2,/logdata/data3,/logdata/data4,/logdata/data5,/logdata/data6
bootstrap.memory_lock: true
bootstrap.system_call_filter: false
network.host: 192.168.100.83
http.port: 9200
transport.tcp.port: 9300
discovery.zen.ping.unicast.hosts: ["192.168.100.83:9300","192.168.100.86:9300","192.168.100.87:9300"]
cluster.initial_master_nodes: ["192.168.100.83:9300","192.168.100.86:9300","192.168.100.87:9300"]
node.max_local_storage_nodes: 256
indices.fielddata.cache.size: 50%
http.cors.enabled: true
http.cors.allow-origin: "*"

xpack.security.enabled: true
xpack.security.transport.ssl.enabled: true
xpack.security.transport.ssl.verification_mode: certificate
xpack.security.transport.ssl.keystore.path: es83.p12
xpack.security.transport.ssl.truststore.path: elastic-stack-ca.p12

xpack.security.http.ssl.enabled: true
xpack.security.http.ssl.keystore.path: es83.p12
xpack.security.http.ssl.truststore.path: elastic-stack-ca.p12
xpack.security.http.ssl.client_authentication: optional
EOF

echo "##### scp目录到其他节点上，并修改配置 #####"
[root@es83 elasticsearch-7.2.0]# cd ../
[root@es83 elkuser]# scp -r ./elasticsearch-7.2.0 192.168.100.86:/home/elkuser/
[root@es83 elkuser]# scp -r ./elasticsearch-7.2.0 192.168.100.87:/home/elkuser/
[root@es83 elkuser]# ssh 192.168.100.86 "sed -i -e 's/es83/es86/g' -e '8s/192.168.100.83/192.168.100.86/' /home/elkuser/elasticsearch-7.2.0/config/elasticsearch.yml"
[root@es83 elkuser]# ssh 192.168.100.87 "sed -i -e 's/es83/es87/g' -e '8s/192.168.100.83/192.168.100.87/' /home/elkuser/elasticsearch-7.2.0/config/elasticsearch.yml"

echo "##### 修改各目录的属主和组 #####"
[root@es83 elkuser]# chown -R elkuser:elkuser /logdata ./elasticsearch-7.2.0
[root@es83 elkuser]# ssh 192.168.100.86 "chown -R elkuser:elkuser /logdata /home/elkuser/elasticsearch-7.2.0"
[root@es83 elkuser]# ssh 192.168.100.87 "chown -R elkuser:elkuser /logdata /home/elkuser/elasticsearch-7.2.0"

echo "##### 切换普通用户，后台运行elasticsearch服务 #####"
[root@es83 elasticsearch-7.2.0]# su elkuser
[elkuser@es83 elasticsearch-7.2.0]$ ./bin/elasticsearch -d
[elkuser@es83 elasticsearch-7.2.0]$ ssh elkuser@192.168.100.86 "/home/elkuser/elasticsearch-7.2.0/bin/elasticsearch -d"
[elkuser@es83 elasticsearch-7.2.0]$ ssh elkuser@192.168.100.87 "/home/elkuser/elasticsearch-7.2.0/bin/elasticsearch -d"

echo "##### 自动生成用户密码（记得保存好用户密码） #####"
[elkuser@es83 elasticsearch-7.2.0]$ echo y | ./bin/elasticsearch-setup-passwords auto | tee elk_pwd.log
Initiating the setup of passwords for reserved users elastic,apm_system,kibana,logstash_system,beats_system,remote_monitoring_user.
The passwords will be randomly generated and printed to the console.

Changed password for user apm_system
PASSWORD apm_system = HojN4w88Nwgl51Oe7o12

Changed password for user kibana
PASSWORD kibana = JPYDvJYn2CDmls5gIlNG

Changed password for user logstash_system
PASSWORD logstash_system = kXxmVCX34PGpUluBXABX

Changed password for user beats_system
PASSWORD beats_system = rY90aBHjAdidQPwgX87u

Changed password for user remote_monitoring_user
PASSWORD remote_monitoring_user = 0VxaGROqo255y60P1kBV

Changed password for user elastic
PASSWORD elastic = NvOBRGpUE3DoaSbYaUp3

echo "##### 测试es加密，查看集群状态是否为green #####"
[elkuser@es83 elasticsearch-7.2.0]$ curl --tlsv1 -XGET "https://192.168.100.83:9200/_cluster/health?pretty" --user elastic:NvOBRGpUE3DoaSbYaUp3 -k

---

Kafka集群部署

Kafka 是最初由Linkedin公司开发，是一个分布式、分区的、多副本的、多订阅者，基于zookeeper协调的分布式消息系统；它具有高吞吐量、低延迟、可扩展性、持久性、可靠性、容错性和高并发等特点，可以处理几十万条消息，延迟只有几毫秒，集群式部署支持热扩展，消息可被持久化到本地磁盘，防止数据丢失，而且支持数千个客户端同时读写。

在本文的架构中，kafka是用作缓存消息队列，用来实时接收日志和发送日志到logstash，实现解耦和流量削峰，解决logstash消费能力跟不上导致的数据丢失问题；笔者采用的是kafka内置的zookeeper，也是以集群方式部署，无需再单独搭建zookeeper集群服务。
注意：kafka的集群配置信息，状态维护是存储在zookeeper这个进程里的，所以kafka在启动前需要先配置启动zookeeper！

笔者为zookeeper服务分配了4G内存，为kafka服务分配了31G内存和5块SSD磁盘，关于硬件配置大家根据实际情况来分配使用！

# 下载方式：wget https://archive.apache.org/dist/kafka/2.3.0/kafka_2.12-2.3.0.tgz
echo "##### 解压Kafka #####"
[root@es83 ~]# cd /opt/
[root@es83 opt]# tar -xvf ./kafka_2.12-2.3.0.tgz

echo "##### 修改zookeeper配置文件 #####"
[root@es83 opt]# cd ./kafka_2.12-2.3.0/
[root@es83 kafka_2.12-2.3.0]# cat > ./config/zookeeper.properties <<EOF
dataDir=/opt/zookeeper
clientPort=2181
maxClientCnxns=0
tickTime=2000
initLimit=10
syncLimit=5
server.1=192.168.100.83:2888:3888
server.2=192.168.100.86:2888:3888
server.3=192.168.100.87:2888:3888

authProvider.1=org.apache.zookeeper.server.auth.SASLAuthenticationProvider
requireClientAuthScheme=sasl
jaasLoginRenew=3600000
4lw.commands.whitelist=
EOF

echo "##### 创建zookeeper数据目录和对应的myid文件 #####"
[root@es83 kafka_2.12-2.3.0]# mkdir /opt/zookeeper
[root@es83 kafka_2.12-2.3.0]# echo 1 > /opt/zookeeper/myid

echo "##### 修改kafka配置文件 #####"
[root@es83 kafka_2.12-2.3.0]# cat > ./config/server.properties <<EOF
broker.id=83
listeners=SASL_PLAINTEXT://192.168.100.83:9092
advertised.listeners=SASL_PLAINTEXT://192.168.100.83:9092
num.network.threads=5
num.io.threads=8
socket.send.buffer.bytes=1024000
socket.receive.buffer.bytes=1024000
socket.request.max.bytes=1048576000
log.dirs=/logdata/kfkdata1,/logdata/kfkdata2,/logdata/kfkdata3,/logdata/kfkdata4,/logdata/kfkdata5
num.partitions=1
num.recovery.threads.per.data.dir=1
offsets.topic.replication.factor=1
transaction.state.log.replication.factor=1
transaction.state.log.min.isr=1
log.retention.hours=72
log.segment.delete.delay.ms=1000
log.cleaner.enable=true
log.cleanup.policy=delete
log.segment.bytes=1073741824
log.retention.check.interval.ms=300000
zookeeper.connect=192.168.100.83:2181,192.168.100.86:2181,192.168.100.87:2181
zookeeper.connection.timeout.ms=60000
group.initial.rebalance.delay.ms=0
delete.topic.enable=true

security.inter.broker.protocol=SASL_PLAINTEXT  
sasl.enabled.mechanisms=PLAIN  
sasl.mechanism.inter.broker.protocol=PLAIN  
authorizer.class.name=kafka.security.auth.SimpleAclAuthorizer
allow.everyone.if.no.acl.found=true
super.users=User:admin;User:kafka
EOF

echo "##### 创建zk和kafka的sasl jaas文件 #####"
[root@es83 kafka_2.12-2.3.0]# cat > ./config/zk_server_jaas.conf <<EOF
Server {
    org.apache.kafka.common.security.plain.PlainLoginModule required 
    username="admin" 
    password="chilu@rljie" 
    user_kafka="chilu@rljie" 
    user_producer="chilu@rljie";
};
EOF

[root@es83 kafka_2.12-2.3.0]# cat > ./config/kafka_server_jaas.conf <<EOF
KafkaServer {
  org.apache.kafka.common.security.plain.PlainLoginModule required
  username="admin"
  password="chilu@rljie"
  user_admin="chilu@rljie"
  user_producer="chilu@rljie"
  user_consumer="chilu@rljie";
};

KafkaClient {
  org.apache.kafka.common.security.plain.PlainLoginModule required
  username="kafka"
  password="chilu@rljie";
};

Client {
  org.apache.kafka.common.security.plain.PlainLoginModule required
  username="kafka"
  password="chilu@rljie";
};
EOF

echo "##### 修改zk和kafka的启动文件（增加SASL的环境配置） #####"
[root@es83 kafka_2.12-2.3.0]# sed -i -e 's/512M/4G/g' -e 's#Xms4G#Xms4G -Djava.security.auth.login.config=/opt/kafka_2.12-2.3.0/config/zk_server_jaas.conf#' ./bin/zookeeper-server-start.sh
[root@es83 kafka_2.12-2.3.0]# sed -i -e 's/1G/31G/g' -e 's#Xms31G#Xms31G -Djava.security.auth.login.config=/opt/kafka_2.12-2.3.0/config/kafka_server_jaas.conf#' ./bin/kafka-server-start.sh

echo "##### 将相关目录复制到其他两台节点上，并进行修改 #####"
[root@es83 kafka_2.12-2.3.0]# cd ../
[root@es83 opt]# scp -r ./zookeeper ./kafka_2.12-2.3.0 192.168.100.86:/opt/
[root@es83 opt]# scp -r ./zookeeper ./kafka_2.12-2.3.0 192.168.100.87:/opt/
[root@es83 opt]# ssh 192.168.100.86 "echo 2 > /opt/zookeeper/myid ; sed -i '1,3s/83/86/' /opt/kafka_2.12-2.3.0/config/server.properties"
[root@es83 opt]# ssh 192.168.100.87 "echo 3 > /opt/zookeeper/myid ; sed -i '1,3s/83/87/' /opt/kafka_2.12-2.3.0/config/server.properties"

echo "##### 后台启动zookeeper服务 #####"
[root@es83 opt]# cd ./kafka_2.12-2.3.0/
[root@es83 kafka_2.12-2.3.0]# ./bin/zookeeper-server-start.sh -daemon ./config/zookeeper.properties
[root@es83 kafka_2.12-2.3.0]# ssh 192.168.100.86 "/opt/kafka_2.12-2.3.0/bin/zookeeper-server-start.sh -daemon /opt/kafka_2.12-2.3.0/config/zookeeper.properties"
[root@es83 kafka_2.12-2.3.0]# ssh 192.168.100.87 "/opt/kafka_2.12-2.3.0/bin/zookeeper-server-start.sh -daemon /opt/kafka_2.12-2.3.0/config/zookeeper.properties"

echo "##### 后台启动kafka服务 #####"
[root@es83 kafka_2.12-2.3.0]# ./bin/kafka-server-start.sh -daemon ./config/server.properties
[root@es83 kafka_2.12-2.3.0]# ssh 192.168.100.86 "/opt/kafka_2.12-2.3.0/bin/kafka-server-start.sh -daemon /opt/kafka_2.12-2.3.0/config/server.properties"
[root@es83 kafka_2.12-2.3.0]# ssh 192.168.100.87 "/opt/kafka_2.12-2.3.0/bin/kafka-server-start.sh -daemon /opt/kafka_2.12-2.3.0/config/server.properties"

当zk和kafka服务都启动后，可以先检查下相关端口状态是否正常

[root@es83 kafka_2.12-2.3.0]# netstat -antlp | grep -E "2888|3888|2181|9092"

当集群服务一切正常后，即可在其中一台kafka节点上配置ACL访问控制权限，对生产者producer和消费者consumer得主题topic和组group设置访问权限，可以限制只允许指定的机器访问。

提示：下面的mykafka是通过/etc/hosts自定义一个IP的域名，例如：192.168.100.83 mykafka；如果写成localhost可能没有权限，执行命令后会报NoAuth；如果写成IP地址会报CONNECT !!!

echo "##### 编写配置ACL访问权限脚本 #####"
[root@es83 kafka_2.12-2.3.0]# cat > ./kfkacls.sh <<EOF
#!/bin/bash
/opt/kafka_2.12-2.3.0/bin/kafka-acls.sh --authorizer-properties zookeeper.connect=mykafka:2181 --add --allow-principal User:producer --allow-host 0.0.0.0 --operation Read --operation Write --topic elk
/opt/kafka_2.12-2.3.0/bin/kafka-acls.sh --authorizer-properties zookeeper.connect=mykafka:2181 --add --allow-principal User:producer --topic elk --producer --group chilu
/opt/kafka_2.12-2.3.0/bin/kafka-acls.sh --authorizer-properties zookeeper.connect=mykafka:2181 --add --allow-principal User:consumer --allow-host 0.0.0.0 --operation Read --operation Write --topic elk
/opt/kafka_2.12-2.3.0/bin/kafka-acls.sh --authorizer-properties zookeeper.connect=mykafka:2181 --add --allow-principal User:consumer --topic elk --consumer --group chilu
EOF

echo "##### 执行脚本 #####"
[root@es83 kafka_2.12-2.3.0]# bash ./kfkacls.sh

echo "##### 查看ACL权限列表 #####"
[root@es83 kafka_2.12-2.3.0]# ./bin/kafka-acls.sh --authorizer-properties zookeeper.connect=mykafka:2181 --list

# 提示：下面是交互式的命令配置
echo "##### 增加ACL访问权限 #####"
[root@es83 kafka_2.12-2.3.0]# ./bin/zookeeper-shell.sh mykafka:2181
Welcome to ZooKeeper!
JLine support is disabled

WATCHER::

WatchedEvent state:SyncConnected type:None path:null

此时可以直接在这个控制台输入命令
如ls / 查看ZK的目录 

检查默认权限
getAcl /

默认所有人可以查看
添加权限命令为：（仅添加kafka主机的IP）
setAcl / ip:192.168.100.83:cdrwa,ip:192.168.100.86:cdrwa,ip:192.168.100.87:cdrwa
setAcl /kafka-acl ip:192.168.100.83:cdrwa,ip:192.168.100.86:cdrwa,ip:192.168.100.87:cdrwa

检查是否生效
getAcl /   
输出：
'ip,'192.168.100.83
: cdrwa
'ip,'192.168.100.86
: cdrwa
'ip,'192.168.100.87
: cdrwa

退出
quit

---

Logstash服务部署

Logstash 是免费且开放的服务器端数据处理管道，采用的是可插拔框架，拥有200多个插件，支持各种输入和输出选择，能够实时解析和转换数据，具有可伸缩性、弹性和灵活性；但是它比较消耗资源，运行时占用较高的CPU和内存，如果缺少消息队列缓存，会有数据丢失的隐患，所以小伙伴们要结合自身情况来使用！

笔者在生产环境上，也为Logstash分配了30G内存，关于硬件配置大家根据实际情况来分配使用！

# 下载方式：wget https://artifacts.elastic.co/downloads/logstash/logstash-7.2.0.tar.gz
echo "##### 解压Logstash #####"
[root@es83 ~]# cd /home/elkuser/
[root@es83 elkuser]# tar -xvf ./logstash-7.2.0.tar.gz

echo "##### 修改启动内存 #####"
[root@es83 elkuser]# cd ./logstash-7.2.0/
[root@es83 logstash-7.2.0]# sed -i -e 's/1g/30g/g' ./config/jvm.options

echo "##### 复制相关所需证书到logstash目录下 #####"
[root@es83 elkuser]# cd ./logstash-7.2.0/config/
[root@es83 config]# cp /home/elkuser/elasticsearch-7.2.0/root.pem ./

echo "##### 修改logstash配置文件 #####"
[root@es83 config]# cat > ./logstash.yml <<EOF
http.host: "192.168.100.83"
node.name: "logstash83"
xpack.monitoring.elasticsearch.hosts: [ "https://192.168.100.83:9200" ]
xpack.monitoring.enabled: true
xpack.monitoring.elasticsearch.username: "elastic"
xpack.monitoring.elasticsearch.password: "NvOBRGpUE3DoaSbYaUp3"
xpack.monitoring.elasticsearch.ssl.certificate_authority: config/root.pem
xpack.monitoring.elasticsearch.ssl.verification_mode: certificate
xpack.monitoring.collection.interval: 30s
xpack.monitoring.collection.pipeline.details.enabled: true
EOF

# 提示：配置的用户名和密码要跟kafka配置的一致！
echo "##### 配置接入kafka的客户端文件 #####"
[root@es83 config]# cat > ./kafka-client-jaas.conf <<EOF
KafkaClient {
    org.apache.kafka.common.security.plain.PlainLoginModule required
    username="consumer"
    password="chilu@rljie";
};
EOF

echo "##### input和ouput的配置示例 #####"
[root@es83 config]# cat > ./test.cfg <<EOF
input {
    kafka {
       bootstrap_servers => "192.168.100.83:9092,192.168.100.86:9092,192.168.100.87:9092"
       client_id => "chilu83"
       auto_offset_reset => "latest"
       topics => "elk"
       group_id => "chilu"
       security_protocol => "SASL_PLAINTEXT"
       sasl_mechanism => "PLAIN"
       jaas_path => "/home/elkuser/logstash-7.2.0/config/kafka-client-jaas.conf"
    }
}

filter {
}

output {
    elasticsearch {
        hosts => ["192.168.4.1:9200","192.168.4.2:9200","192.168.4.3:9200"]
        user => "elastic"
        password => "NvOBRGpUE3DoaSbYaUp3"
        ssl => true
        cacert => "/home/elkuser/logstash-7.2.0/config/root.pem"
        index => "chilu_elk%{+YYYY.MM.dd}"
    }
}
EOF

echo "##### 启动logstash服务 #####"
[root@es83 config]# ../bin/logstash -r -f ./test.cfg

---

Kibana服务部署

Kibana 是一个开源的分析和可视化平台，可以为Logstash和ElasticSearch提供的日志数据进行高效的搜索、可视化汇总和多维度分析，并且与Elasticsearch索引中的数据进行交互；它基于浏览器的界面操作可以快速创建动态仪表板，实时监控ElasticSearch的数据状态与更改等。

笔者在生产环境上，为Kibana分配了8G内存，关于硬件配置大家根据实际情况来分配使用！

# 下载方式：wget https://artifacts.elastic.co/downloads/kibana/kibana-7.2.0-linux-x86_64.tar.gz
echo "##### 解压Kibana #####"
[root@es83 ~]# cd /home/elkuser/
[root@es83 elkuser]# tar -xvf kibana-7.2.0-linux-x86_64.tar.gz

echo "##### 修改启动内存 #####"
[root@es83 elkuser]# cd ./kibana-7.2.0-linux-x86_64/
[root@es83 kibana-7.2.0-linux-x86_64]# sed -i 's/warnings/warnings --max_old_space_size=8096/' ./bin/kibana

echo "##### 复制相关所需证书到kibana目录下 #####"
[root@es83 kibana-7.2.0-linux-x86_64]# cd ./config/
[root@es83 config]# cp /home/elkuser/elasticsearch-7.2.0/client.p12 ./

echo "##### 利用client.p12证书生成其他所需证书 #####"
[root@es83 config]# openssl pkcs12 -in client.p12 -nocerts -nodes > client.key
Enter Import Password: 回车Enter
MAC verified OK

[root@es83 config]# openssl pkcs12 -in client.p12 -clcerts -nokeys > client.cer
Enter Import Password: 回车Enter
MAC verified OK

[root@es83 config]# openssl pkcs12 -in client.p12 -cacerts -nokeys -chain > client-ca.cer
Enter Import Password: 回车Enter
MAC verified OK

echo "##### 升级kibana的web界面为https访问 #####"
[root@es83 config]# cd ../
[root@es83 kibana-7.2.0-linux-x86_64]# openssl req -newkey rsa:2048 -nodes -keyout server.key -x509 -days 3650 -out server.crt -subj "/C=CN/ST=guangzhou/L=rljie/O=chilu/OU=linux/"

echo "##### 修改kibana的配置文件 #####"
[root@es83 kibana-7.2.0-linux-x86_64]# cat > ./config/kibana.yml <<EOF
server.name: kibana
server.host: "192.168.100.83"
elasticsearch.hosts: [ "https://192.168.100.83:9200" ]
xpack.monitoring.ui.container.elasticsearch.enabled: true
elasticsearch.username: "elastic"
elasticsearch.password: "NvOBRGpUE3DoaSbYaUp3"
xpack.security.enabled: true
elasticsearch.ssl.certificateAuthorities: config/client-ca.cer
elasticsearch.ssl.verificationMode: certificate
xpack.security.encryptionKey: "4297f44b13955235245b2497399d7a93"
xpack.reporting.encryptionKey: "4297f44b13955235245b2497399d7a93"
server.ssl.enabled: true
server.ssl.certificate: server.crt
server.ssl.key: server.key
EOF

echo "##### nohup后台启动kibana服务（自行选择后台方式） #####"
[root@es83 kibana-7.2.0-linux-x86_64]# nohup ./bin/kibana --allow-root &

完成以上操作后，可使用浏览器访问kibana地址https://192.168.100.83，输入elastic用户密码即可！

curl 示例

curl --tlsv1 -XGET 'https://192.168.100.83:9200/_cluster/health?pretty' --cacert '/home/elkuser/elasticsearch-7.2.0/root.pem' --user elastic:NvOBRGpUE3DoaSbYaUp3

---

Filebeat服务部署

Filebeat 是一个用于转发和集中日志数据的轻量级采集器，基于go语言开发，性能稳定，配置简单，占用资源很少；它作为agent安装在服务器上，可以监控你指定的日志文件或位置，收集日志事件，并将其转发到配置的输出；主要通过探测器prospector和收集器harvester组件完成工作。

# 下载方式：wget https://artifacts.elastic.co/downloads/beats/filebeat/filebeat-7.2.0-linux-x86_64.tar.gz
echo "##### 解压Filebeat #####"
[root@es83 ~]# cd /home/elkuser/
[root@es83 elkuser]# tar -xvf filebeat-7.2.0-linux-x86_64.tar.gz

echo "##### 修改filebeat配置文件 #####"
[root@es83 elkuser]# cd ./filebeat-7.2.0-linux-x86_64/
[root@es83 filebeat-7.2.0-linux-x86_64]# cat > ./filebeat.yml <<\EOF
filebeat.inputs:
- type: log
  enabled: true
  paths:
    - /var/log/access.log
  close_timeout: 1h
  clean_inactive: 3h
  ignore_older: 2h

filebeat.config.modules:
  path: ${path.config}/modules.d/*.yml
  reload.enabled: true

setup.template.settings:
  index.number_of_shards: 3

setup.kibana:

output.kafka:
  hosts: ["192.168.100.83:9092","192.168.100.86:9092","192.168.100.87:9092"]
  topic: elk
  required_acks: 1
  username: "producer"
  password: "chilu@rljie"
EOF

echo "##### nohup后台启动filebeat服务 #####"
[root@es83 filebeat-7.2.0-linux-x86_64]# nohup ./filebeat -e -c filebeat.yml &

本次架构的讲解操作到此为止，大家在搭建部署时要仔细了！kuber