Centos7 之安装Logstash ELK stack 日志管理系统
一、介绍http://images2015.cnblogs.com/blog/790056/201605/790056-20160523203714803-1084502382.jpg
The Elastic Stack - 它不是一个软件，而是Elasticsearch，Logstash，Kibana 开源软件的集合，对外是作为一个日志管理系统的开源方案。它可以从任何来源，任何格式进行日志搜索，分析获取数据，并实时进行展示。像盾牌（安全），监护者（警报）和Marvel（监测）一样为你的产品提供更多的可能。
Elasticsearch：搜索，提供分布式全文搜索引擎
Logstash: 日志收集，管理，存储
Kibana ：日志的过滤web 展示
Filebeat：监控日志文件、转发
二、测试环境规划图
http://images2015.cnblogs.com/blog/790056/201605/790056-20160523132738038-1099988347.png
环境：ip、主机名按照如上规划，系统已经 update. 所有主机时间一致。防火墙测试环境已关闭。下面是这次elk学习的部署安装
目的：通过elk 主机收集监控主要server的系统日志、以及线上应用服务日志。
三、Elasticsearch+Logstash+Kibana的安装（在 elk.test.com 上进行操作）
3.1.基础环境检查
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# hostnameelk.test.com
# cat /etc/hosts127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6192.168.30.67 elk.test.com192.168.30.99 rsyslog.test.com192.168.30.64 nginx.test.comhttp://common.cnblogs.com/images/copycode.gif
3.2.软件包
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# cd elk/
# wget -c https://download.elastic.co/elasticsearch/release/org/elasticsearch/distribution/rpm/elasticsearch/2.3.3/elasticsearch-2.3.3.rpm# wget -c https://download.elastic.co/logstash/logstash/packages/centos/logstash-2.3.2-1.noarch.rpm# wget https://download.elastic.co/kibana/kibana/kibana-4.5.1-1.x86_64.rpm# wget -c https://download.elastic.co/beats/filebeat/filebeat-1.2.3-x86_64.rpmhttp://common.cnblogs.com/images/copycode.gif
3.3.检查
# lselasticsearch-2.3.3.rpmfilebeat-1.2.3-x86_64.rpmkibana-4.5.1-1.x86_64.rpmlogstash-2.3.2-1.noarch.rpm服务器只需要安装e、l、k, 客户端只需要安装filebeat。
3.4.安装elasticsearch，先安装jdk，elk server 需要java 开发环境支持，由于客户端上使用的是filebeat软件，它不依赖java环境，所以不需要安装。
# yum install java-1.8.0-openjdk -y安装es
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#localinstall elasticsearch-..rpm -y
.....
Installing : elasticsearch-.-.noarch /### NOT starting on installation, please execute the following statements to configure elasticsearch service to start automatically using systemdsystemctl daemon-reloadsystemctl enable elasticsearch.service
### You can start elasticsearch service by executingsystemctl start elasticsearch.service
Verifying: elasticsearch-.-.noarch /Installed:
elasticsearch.noarch :.-http://common.cnblogs.com/images/copycode.gif
重新载入 systemd，扫描新的或有变动的单元；启动并加入开机自启动
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# systemctl daemon-reload
# systemctl enable elasticsearch
Created symlink from /etc/systemd/system/multi-user.target.wants/elasticsearch.service to /usr/lib/systemd/system/elasticsearch.service.
# systemctl start elasticsearch
# systemctl status elasticsearch
● elasticsearch.service - Elasticsearch
Loaded: loaded (/usr/lib/systemd/system/elasticsearch.service; enabled; vendor preset: disabled)
Active: active (running) since Fri 2016-05-20 15:38:35 CST; 12s ago
Docs: http://www.elastic.co
Process: 10428 ExecStartPre=/usr/share/elasticsearch/bin/elasticsearch-systemd-pre-exec (code=exited, status=0/SUCCESS)
Main PID: 10430 (java)
CGroup: /system.slice/elasticsearch.service
└─10430 /bin/java -Xms256m -Xmx1g -Djava.awt.headless=true -XX:+UseParNewGC -XX:+UseConcMarkSweepGC -XX:CMSInitiatingOccupancy...
May 20 15:38:38 elk.test.com elasticsearch: heap...
May 20 15:38:38 elk.test.com elasticsearch: max ...65536]
May 20 15:38:41 elk.test.com elasticsearch: initialized
May 20 15:38:41 elk.test.com elasticsearch: starting ...
May 20 15:38:41 elk.test.com elasticsearch: publ...:9300}
May 20 15:38:41 elk.test.com elasticsearch: elas...xx35hw
May 20 15:38:45 elk.test.com elasticsearch: new_...eived)
May 20 15:38:45 elk.test.com elasticsearch: reco..._state
May 20 15:38:45 elk.test.com elasticsearch: publ...:9200}
May 20 15:38:45 elk.test.com elasticsearch: started
Hint: Some lines were ellipsized, use -l to show in full.http://common.cnblogs.com/images/copycode.gif
检查服务
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# rpm -qc elasticsearch
/etc/elasticsearch/elasticsearch.yml
/etc/elasticsearch/logging.yml
/etc/init.d/elasticsearch
/etc/sysconfig/elasticsearch
/usr/lib/sysctl.d/elasticsearch.conf
/usr/lib/systemd/system/elasticsearch.service
/usr/lib/tmpfiles.d/elasticsearch.conf
# netstat -nltp | grep java
tcp6 0 0 127.0.0.1:9200 :::* LISTEN 10430/java
tcp6 0 0 ::1:9200 :::* LISTEN 10430/java
tcp6 0 0 127.0.0.1:9300 :::* LISTEN 10430/java
tcp6 0 0 ::1:9300 :::* LISTEN 10430/javahttp://common.cnblogs.com/images/copycode.gif
修改防火墙，将9200、9300 端口对外开放
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# firewall-cmd --permanent --add-port={9200/tcp,9300/tcp}
success
# firewall-cmd --reload
success
# firewall-cmd--list-all
public (default, active)
interfaces: eno16777984 eno33557248
sources:
services: dhcpv6-client ssh
ports: 9200/tcp 9300/tcp
masquerade: no
forward-ports:
icmp-blocks:
rich rules:http://common.cnblogs.com/images/copycode.gif
3.5 安装kibana
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# yum localinstall kibana-4.5.1-1.x86_64.rpm –y
# systemctl enable kibana
Created symlink from /etc/systemd/system/multi-user.target.wants/kibana.service to /usr/lib/systemd/system/kibana.service.
# systemctl start kibana
# systemctl status kibana
● kibana.service - no description given
Loaded: loaded (/usr/lib/systemd/system/kibana.service; enabled; vendor preset: disabled)
Active: active (running) since Fri 2016-05-20 15:49:02 CST; 20s ago
Main PID: 11260 (node)
CGroup: /system.slice/kibana.service
└─11260 /opt/kibana/bin/../node/bin/node /opt/kibana/bin/../src/cli
May 20 15:49:05 elk.test.com kibana: {"type":"log","@timestamp":"2016-05-20T07:49:05+00:00","tags":["status","plugin:elasticsearch...May 20 15:49:05 elk.test.com kibana: {"type":"log","@timestamp":"2016-05-20T07:49:05+00:00","tags":["status","plugin:kbn_vi...lized"}
May 20 15:49:05 elk.test.com kibana: {"type":"log","@timestamp":"2016-05-20T07:49:05+00:00","tags":["status","plugin:markdo...lized"}
May 20 15:49:05 elk.test.com kibana: {"type":"log","@timestamp":"2016-05-20T07:49:05+00:00","tags":["status","plugin:metric...lized"}
May 20 15:49:05 elk.test.com kibana: {"type":"log","@timestamp":"2016-05-20T07:49:05+00:00","tags":["status","plugin:spyMod...lized"}
May 20 15:49:05 elk.test.com kibana: {"type":"log","@timestamp":"2016-05-20T07:49:05+00:00","tags":["status","plugin:status...lized"}
May 20 15:49:05 elk.test.com kibana: {"type":"log","@timestamp":"2016-05-20T07:49:05+00:00","tags":["status","plugin:table_...lized"}
May 20 15:49:05 elk.test.com kibana: {"type":"log","@timestamp":"2016-05-20T07:49:05+00:00","tags":["listening","info"],"pi...:5601"}
May 20 15:49:10 elk.test.com kibana: {"type":"log","@timestamp":"2016-05-20T07:49:10+00:00","tags":["status","plugin:elasticsearch...May 20 15:49:14 elk.test.com kibana: {"type":"log","@timestamp":"2016-05-20T07:49:14+00:00","tags":["status","plugin:elasti...found"}
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检查kibana服务运行（Kibana默认 进程名：node ，端口5601）
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# netstat -nltp
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 909/sshd
tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN 1595/master
tcp 0 0 0.0.0.0:5601 0.0.0.0:* LISTEN 11260/nodehttp://common.cnblogs.com/images/copycode.gif
修改防火墙，对外开放tcp/5601
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# firewall-cmd --permanent --add-port=5601/tcp
Success
# firewall-cmd --reload
success
# firewall-cmd --list-all
public (default, active)
interfaces: eno16777984 eno33557248
sources:
services: dhcpv6-client ssh
ports: 9200/tcp 9300/tcp 5601/tcp
masquerade: no
forward-ports:
icmp-blocks:
rich rules:http://common.cnblogs.com/images/copycode.gif
这时，我们可以打开浏览器，测试访问一下kibana服务器http://192.168.30.67:5601/，确认没有问题，如下图：
http://images2015.cnblogs.com/blog/790056/201605/790056-20160523142336319-1830618718.jpg
在这里，我们可以修改防火墙，将用户访问80端口连接转发到5601上，这样可以直接输入网址不用指定端口了，如下:
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# firewall-cmd --permanent --add-forward-port=port=80:proto=tcp:toport=5601# firewall-cmd --reload
# firewall-cmd --list-all
public (default, active)
interfaces: eno16777984 eno33557248
sources:
services: dhcpv6-client ssh
ports: 9200/tcp 9300/tcp 5601/tcp
masquerade: no
forward-ports: port=80:proto=tcp:toport=5601:toaddr=
icmp-blocks:
rich rules:http://common.cnblogs.com/images/copycode.gif
3.6 安装logstash，以及添加配置文件
# yum localinstall logstash-2.3.2-1.noarch.rpm –y生成证书
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# cd /etc/pki/tls/
# lscert.pemcertsmiscopenssl.cnfprivate
# openssl req -subj '/CN=elk.test.com/' -x509 -days 3650 -batch -nodes -newkey rsa:2048 -keyout private/logstash-forwarder.key -out
certs/logstash-forwarder.crt
Generating a 2048 bit RSA private key
...................................................................+++
......................................................+++
writing new private key to 'private/logstash-forwarder.key'-----http://common.cnblogs.com/images/copycode.gif
之后创建logstash 的配置文件。如下：
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启动logstash，并检查端口，配置文件里，我们写的是5000端口
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# systemctl start logstash
# /sbin/chkconfig logstash on
# netstat -ntlp
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 909/sshd
tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN 1595/master
tcp 0 0 0.0.0.0:5601 0.0.0.0:* LISTEN 11260/node
tcp 0 0 0.0.0.0:514 0.0.0.0:* LISTEN 618/rsyslogd
tcp6 0 0 :::5000 :::* LISTEN 12819/java
tcp6 0 0 :::3306 :::* LISTEN 1270/mysqld
tcp6 0 0 127.0.0.1:9200 :::* LISTEN 10430/java
tcp6 0 0 ::1:9200 :::* LISTEN 10430/java
tcp6 0 0 127.0.0.1:9300 :::* LISTEN 10430/java
tcp6 0 0 ::1:9300 :::* LISTEN 10430/java
tcp6 0 0 :::22 :::* LISTEN 909/sshd
tcp6 0 0 ::1:25 :::* LISTEN 1595/master
tcp6 0 0 :::514 :::* LISTEN 618/rsyslogdhttp://common.cnblogs.com/images/copycode.gif
修改防火墙，将5000端口对外开放。
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# firewall-cmd --permanent --add-port=5000/tcp
success
# firewall-cmd --reload
success
# firewall-cmd --list-all
public (default, active)
interfaces: eno16777984 eno33557248
sources:
services: dhcpv6-client ssh
ports: 9200/tcp 9300/tcp 5000/tcp 5601/tcp
masquerade: no
forward-ports: port=80:proto=tcp:toport=5601:toaddr=
icmp-blocks:
rich rules:http://common.cnblogs.com/images/copycode.gif
3.7 修改elasticsearch 配置文件
查看目录，创建文件夹es-01（名字不是必须的）,logging.yml是自带的，elasticsearch.yml是创建的文件，内如见下：
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# cd /etc/elasticsearch/
# tree
.
├── es-01│ ├── elasticsearch.yml
│ └── logging.yml
└── scriptshttp://common.cnblogs.com/images/copycode.gif
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# cat es-01/elasticsearch.yml
----
http:
port: 9200network:
host: elk.test.com
node:
name: elk.test.com
path:
data: /etc/elasticsearch/data/es-01http://common.cnblogs.com/images/copycode.gif
3.8 重启elasticsearch、logstash服务。
3.9 将 fiebeat安装包拷贝到 rsyslog、nginx 客户端上
# scp filebeat-1.2.3-x86_64.rpm root@rsyslog.test.com:/root/elk
# scp filebeat-1.2.3-x86_64.rpm root@nginx.test.com:/root/elk
# scp /etc/pki/tls/certs/logstash-forwarder.crt rsyslog.test.com:/root/elk
# scp /etc/pki/tls/certs/logstash-forwarder.crt nginx.test.com:/root/elk
四、客户端部署filebeat（在rsyslog、nginx客户端上操作）
http://images2015.cnblogs.com/blog/790056/201605/790056-20160523203357756-382159242.jpg
filebeat客户端是一个轻量级的，从服务器上的文件收集日志资源的工具，这些日志转发到处理到Logstash服务器上。该Filebeat客户端使用安全的Beats协议与Logstash实例通信。lumberjack协议被设计为可靠性和低延迟。Filebeat使用托管源数据的计算机的计算资源，并且Beats输入插件尽量减少对Logstash的资源需求。
4.1.（node1）安装filebeat，拷贝证书，创建收集日志配置文件
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# yum localinstall filebeat-1.2.3-x86_64.rpm -y
#拷贝证书到本机指定目录中
# cp logstash-forwarder.crt /etc/pki/tls/certs/.
# cd /etc/filebeat/
# tree
.
├── conf.d
│ ├── authlogs.yml
│ └── syslogs.yml
├── filebeat.template.json
└── filebeat.yml1 directory, 4 fileshttp://common.cnblogs.com/images/copycode.gif
修改的文件有3个，filebeat.yml，是定义连接logstash 服务器的配置。conf.d目录下的2个配置文件是自定义监控日志的，下面看下各自的内容：
filebeat.yml
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authlogs.yml& syslogs.yml
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修改完成后，启动filebeat服务
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# service filebeat start
Starting filebeat:
# chkconfig filebeat on
# netstat -altp
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 localhost:25151 *:* LISTEN 6230/python2
tcp 0 0 *:ssh *:* LISTEN 5509/sshd
tcp 0 0 localhost:ipp *:* LISTEN 1053/cupsd
tcp 0 0 localhost:smtp *:* LISTEN 1188/master
tcp 0 0 rsyslog.test.com:51155 elk.test.com:commplex-mainESTABLISHED 7443/filebeat
tcp 0 52 rsyslog.test.com:ssh 192.168.30.65:10580 ESTABLISHED 7164/sshd
tcp 0 0 *:ssh *:* LISTEN 5509/sshd
tcp 0 0 localhost:ipp *:* LISTEN 1053/cupsd
tcp 0 0 localhost:smtp *:* LISTEN 1188/masterhttp://common.cnblogs.com/images/copycode.gif
如果连接不上，状态不正常的话，检查下客户端的防火墙。
4.2. （node2）安装filebeat，拷贝证书，创建收集日志配置文件
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# yum localinstall filebeat-1.2.3-x86_64.rpm -y
# cp logstash-forwarder.crt /etc/pki/tls/certs/.
# cd /etc/filebeat/
# tree
.
├── conf.d
│ ├── nginx.yml
│ └── syslogs.yml
├── filebeat.template.json
└── filebeat.yml1 directory, 4 fileshttp://common.cnblogs.com/images/copycode.gif
修改filebeat.yml 内容如下：
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syslogs.yml & nginx.yml
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修改完成后，启动filebeat服务，并检查filebeat进程
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# service filebeat start
Starting filebeat:
# chkconfig filebeat on
# netstat -aulpt
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 *:ssh *:* LISTEN 1076/sshd
tcp 0 0 localhost:smtp *:* LISTEN 1155/master
tcp 0 0 *:http *:* LISTEN 1446/nginx
tcp 0 52 nginx.test.com:ssh 192.168.30.65:11690 ESTABLISHED 1313/sshd
tcp 0 0 nginx.test.com:49500 elk.test.com:commplex-mainESTABLISHED 1515/filebeat
tcp 0 0 nginx.test.com:ssh 192.168.30.65:6215 ESTABLISHED 1196/sshd
tcp 0 0 nginx.test.com:ssh 192.168.30.65:6216 ESTABLISHED 1200/sshd
tcp 0 0 *:ssh *:* LISTEN 1076/sshdhttp://common.cnblogs.com/images/copycode.gif
通过上面可以看出，客户端filebeat进程已经和 elk 服务器连接了。下面去验证。
五、验证，访问kibana http://192.168.30.67
5.1 设置下
http://images2015.cnblogs.com/blog/790056/201605/790056-20160523200856475-1042716245.jpg
查看下两台机器的系统日志：node1的
http://images2015.cnblogs.com/blog/790056/201605/790056-20160523202543366-1564548957.jpg
node2的nginx 访问日志
http://images2015.cnblogs.com/blog/790056/201605/790056-20160523202746569-1844190829.jpg
六、体验
之前在学习rsyslog +LogAnalyzer，然后又学了这个之后，发现elk 不管从整体系统，还是体验都是不错的，而且更新快。后续会继续学习，更新相关的监控过滤日志方法，日志分析，以及使用kafka 来进行存储的架构。
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