有时候根据日志的内容，可能一行不能全部显示，会延续在下一行，为了将上下内容关联在一起，于是codec插件中的multiline插件
就派上用场了，源日志内容：
[2017-09-20T16:04:34,936][INFO ][logstash.outputs.elasticsearch] Attempting to install template {:manage_template=>{"template"=>"logstash-*", "version"=>50001, "settings"=>{"index.refresh_interval"=>"5s"}, "mappings"=>{"_default_"=>{"_all"=>{"enabled"=>true, "norms"=>false}, "dynamic_templates"=>[{"message_field"=>{"path_match"=>"message", "match_mapping_type"=>"string", "mapping"=>{"type"=>"text", "norms"=>false}}}, {"string_fields"=>{"match"=>"*", "match_mapping_type"=>"string", "mapping"=>{"type"=>"text", "norms"=>false, "fields"=>{"keyword"=>{"type"=>"keyword", "ignore_above"=>256}}}}}], "properties"=>{"@timestamp"=>{"type"=>"date", "include_in_all"=>false}, "@version"=>{"type"=>"keyword", "include_in_all"=>false}, "geoip"=>{"dynamic"=>true, "properties"=>{"ip"=>{"type"=>"ip"}, "location"=>{"type"=>"geo_point"}, "latitude"=>{"type"=>"half_float"}, "longitude"=>{"type"=>"half_float"}}}}}}}}
[2017-09-20T16:04:34,949][INFO ][logstash.outputs.elasticsearch] New Elasticsearch output {:class=>"LogStash::Outputs::ElasticSearch", :hosts=>["//192.168.44.134:9200"]}根据时间戳前面的[这个符号进行判断日志内容是否是一起的
[root@node3 conf.d]# cat multiline.conf input { file { path => ["/var/log/logstash/logstash-plain.log"] start_position => "beginning" codec => multiline { pattern => "^\[" negate => true what => "previous" } }}output { stdout { codec => rubydebug }} 然后执行：
[root@node3 conf.d]# /usr/share/logstash/bin/logstash -f multiline.conf Sending Logstash's logs to /var/log/logstash which is now configured via log4j2.properties{ "@version" => "1", "host" => "node3", "path" => "/var/log/logstash/logstash-plain.log", "@timestamp" => 2017-09-21T02:54:37.733Z, "message" => "[2017-09-21T10:51:10,588][INFO ][logstash.modules.scaffold] Initializing module {:module_name=>\"netflow\", :directory=>\"/usr/share/logstash/modules/netflow/configuration\"}"}{ "@version" => "1", "host" => "node3", "path" => "/var/log/logstash/logstash-plain.log", "@timestamp" => 2017-09-21T02:54:37.743Z, "message" => "[2017-09-21T10:51:10,596][INFO ][logstash.modules.scaffold] Initializing module {:module_name=>\"fb_apache\", :directory=>\"/usr/share/logstash/modules/fb_apache/configuration\"}"} 接下来开始nginx日志的收集
log_format name [escape=default|json] string，查看nginx文档，nginx日志格式支持json，于是采用json来配置nginx日志，再结合logstash的json插件来收集nginx的日志
1、首先安装nginx，这里采用yum安装，nginx存在于epel源中
2、配置nginx的日志输出为json格式
http { log_format main '$remote_addr - $remote_user [$time_local] "$request" ' '$status $body_bytes_sent "$http_referer" ' '"$http_user_agent" "$http_x_forwarded_for"'; log_format json '{"@timstamp":"$time_iso8601","@version":"1","client":"$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 /var/log/nginx/access.log main; access_log /var/log/nginx/access.log json; 3、上面配置的value值都是nginx的一些变量，查看更多变量：http://nginx.org/en/docs/http/ngx_http_core_module.html#var_status
4、启动nginx服务，查看生成的日志是否是json格式：
[root@node3 nginx]# cat /var/log/nginx/access.log {"@timstamp":"2017-09-21T13:47:43+08:00","@version":"1","client":"192.168.44.1","url":"/index.html","status":"200","domain":"192.168.44.136","host":"192.168.44.136","size":"3698","responsetime":"0.000","referer":"-","ua":"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3112.113 Safari/537.36"}{"@timstamp":"2017-09-21T13:47:43+08:00","@version":"1","client":"192.168.44.1","url":"/nginx-logo.png","status":"200","domain":"192.168.44.136","host":"192.168.44.136","size":"368","responsetime":"0.000","referer":"http://192.168.44.136/","ua":"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3112.113 Safari/537.36"}{"@timstamp":"2017-09-21T13:47:43+08:00","@version":"1","client":"192.168.44.1","url":"/poweredby.png","status":"200","domain":"192.168.44.136","host":"192.168.44.136","size":"2811","responsetime":"0.000","referer":"http://192.168.44.136/","ua":"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3112.113 Safari/537.36"}{"@timstamp":"2017-09-21T13:47:43+08:00","@version":"1","client":"192.168.44.1","url":"/404.html","status":"404","domain":"192.168.44.136","host":"192.168.44.136","size":"3652","responsetime":"0.000","referer":"http://192.168.44.136/","ua":"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3112.113 Safari/537.36"} 然后利用logstash的json格式来收集nginx访问日志：
[root@node3 conf.d]# cat json.conf input { file { path => ["/var/log/nginx/access.log"] start_position => "beginning" codec => json }}output { stdout { codec => rubydebug }} 执行编写的配置文件：
[root@node3 conf.d]# /usr/share/logstash/bin/logstash -f json.conf Sending Logstash's logs to /var/log/logstash which is now configured via log4j2.properties{ "referer" => "-", "ua" => "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3112.113 Safari/537.36", "url" => "/index.html", "path" => "/var/log/nginx/access.log", "@timestamp" => 2017-09-21T05:58:44.442Z, "size" => "3698", "@timstamp" => "2017-09-21T13:47:43+08:00", "domain" => "192.168.44.136", "@version" => "1", "host" => "192.168.44.136", "client" => "192.168.44.1", "responsetime" => "0.000", "status" => "200"} 现在将上面两个的日志（logstash和nginx的日志）都输出到elasticsearch中，将es中之前的index清空，重新使用logstash收集上面的日志到es中：
[root@node3 conf.d]# cat all.conf input { file { type => "nginx-log" path => ["/var/log/nginx/access.log"] start_position => "beginning" codec => json } file { type => "logstash-log" path => ["/var/log/logstash/logstash-plain.log"] start_position => "beginning" codec => multiline { pattern => "^\[" negate => true what => "previous" } }}output { if [type] == "logstash-log" { elasticsearch { hosts => ["192.168.44.134:9200"] index => "logstash-log" } } if [type] == "nginx-log" { elasticsearch { hosts => ["192.168.44.134:9200"] index => "nginx-log" } }} 然后在es上查看是否已经有数据了：
使用kibana来看看具体效果，开始安装kibana
这里采用rpm进行安装kinaba：
wget https://artifacts.elastic.co/downloads/kibana/kibana-5.6.1-x86_64.rpm
/etc/default/kibana/etc/init.d/kibana/etc/kibana/kibana.yml/etc/systemd/system/kibana.service/usr/share/kibana/LICENSE.txt/usr/share/kibana/NOTICE.txt/usr/share/kibana/README.txt/usr/share/kibana/bin/kibana/usr/share/kibana/bin/kibana-plugin/usr/share/kibana/node/CHANGELOG.md/usr/share/kibana/node/LICENSE/usr/share/kibana/node/README.md/usr/share/kibana/node/bin/node/usr/share/kibana/node/bin/npm
修改kibana的配置：
[root@node3 ~]# egrep -v "^#|^$" /etc/kibana/kibana.yml server.port: 5601server.host: "192.168.44.136"server.name: "node3"elasticsearch.url: "http://192.168.44.134:9200"kibana.index: ".kibana"
然后启动kibana：
[root@node3 ~]# /etc/init.d/kibana startkibana started[root@node3 ~]# netstat -tunlpActive Internet connections (only servers)Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 6948/nginx tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 1301/sshd tcp 0 0 192.168.44.136:5601 0.0.0.0:* LISTEN 7451/node
访问kibana查看是否已经和es结合起来了：
现在将es中的nginx-log这个索引添加到kibana中：
于是kibana与es的简单结合操作完成
继续编logstash的配置文件：收集syslog的日志
[root@node3 conf.d]# cat syslog.conf input { syslog { type => "syslog" host => "192.168.44.136" port => "514" }}output { stdout { codec => rubydebug }} 查看端口是否已经起来了：
[root@node3 conf.d]# netstat -tunlpActive Internet connections (only servers)Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 6948/nginx tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 1301/sshd tcp 0 0 192.168.44.136:5601 0.0.0.0:* LISTEN 7451/node tcp 0 0 :::80 :::* LISTEN 6948/nginx tcp 0 0 :::22 :::* LISTEN 1301/sshd tcp 0 0 ::ffff:127.0.0.1:9600 :::* LISTEN 7669/java tcp 0 0 ::ffff:192.168.44.136:514 :::* LISTEN 7669/java udp 0 0 0.0.0.0:68 0.0.0.0:* 1128/dhclient udp 0 0 ::ffff:192.168.44.136:514 :::* 7669/java
修改rsyslog配置文件：
vim /etc/rsyslog.conf添加到最后一行：
*.* @@192.168.44.136:514
重启rsyslog服务：
[root@node3 conf.d]# /etc/init.d/rsyslog restart关闭系统日志记录器： [确定]启动系统日志记录器： [确定]
[root@node3 conf.d]# /usr/share/logstash/bin/logstash -f syslog.conf Sending Logstash's logs to /var/log/logstash which is now configured via log4j2.properties{ "severity" => 6, "program" => "kernel", "message" => "imklog 5.8.10, log source = /proc/kmsg started.\n", "type" => "syslog", "priority" => 6, "logsource" => "node3", "@timestamp" => 2017-09-21T07:28:55.000Z, "@version" => "1", "host" => "192.168.44.136", "facility" => 0, "severity_label" => "Informational", "timestamp" => "Sep 21 15:28:55", "facility_label" => "kernel"} 接下来使用tcp插件进行收集数据：
[root@node3 conf.d]# cat tcp.conf input { tcp { host => ["192.168.44.136"] port => "6666" }}output { stdout { codec => rubydebug }}
[root@node3 conf.d]# netstat -tunlpActive Internet connections (only servers)Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 6948/nginx tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 1301/sshd tcp 0 0 192.168.44.136:5601 0.0.0.0:* LISTEN 7451/node tcp 0 0 :::80 :::* LISTEN 6948/nginx tcp 0 0 :::22 :::* LISTEN 1301/sshd tcp 0 0 ::ffff:127.0.0.1:9600 :::* LISTEN 7867/java tcp 0 0 ::ffff:192.168.44.136:6666 :::* LISTEN 7867/java
可以看见端口6666已经开启了，现在开始测试：
[root@node3 ~]# nc 192.168.44.136 6666 < /etc/resolv.conf [root@node3 ~]# nc 192.168.44.136 6666 < /etc/resolv.conf
[root@node3 conf.d]# /usr/share/logstash/bin/logstash -f tcp.confSending Logstash's logs to /var/log/logstash which is now configured via log4j2.properties{ "@version" => "1", "host" => "192.168.44.136", "@timestamp" => 2017-09-21T07:44:25.087Z, "message" => "; generated by /sbin/dhclient-script", "port" => 54117}{ "@version" => "1", "host" => "192.168.44.136", "@timestamp" => 2017-09-21T07:44:25.090Z, "message" => "search localdomain", "port" => 54117} 下篇讲解将日志通过logstash收集到redis，然后再通过logstash从redis取出数据输出到es，通过kibana进行展示