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: 5601 server.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 start kibana started [root@node3 ~]# netstat -tunlp Active Internet connections (only servers) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 0.0.0.0:80 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 -tunlp Active Internet connections (only servers) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 0.0.0.0:80 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.
",
"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 -tunlp Active Internet connections (only servers) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 0.0.0.0:80 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.conf
Sending 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