logstash通过rsyslog对nginx的日志收集和分析
logstash通过rsyslog对nginx的日志收集和分析
http://bbotte.blog.51cto.com/6205307/1613571 logstash&elasticsearch&kibana的安装和配置
http://bbotte.blog.51cto.com/6205307/1614453 这一篇文章里面是以nginx打补丁的方式实现rsyslog把nginx的日志同步到logstash做分析，不过线上环境种种不一样，下面是把nginx的日志直接通过rsyslog同步到logstash服务器上，不用对nginx做更改，相对来说更简单明了。
nginx服务器端
nginx的配置文件不用改动，例子：
[root@db2 ~]# grep -v ^.*# /usr/local/nginx/conf/nginx.conf|sed '/^$/d'
worker_processes 1;
events {
worker_connections 1024;
}
http {
include mime.types;
default_type application/octet-stream;
log_format main '$remote_addr - $remote_user [$time_local] "$request" '
'$status $body_bytes_sent "$http_referer" '
'"$http_user_agent" "$http_x_forwarded_for"';
sendfile on;
keepalive_timeout 65;
server {
listen 80;
server_name localhost;
index index.html; #默认配置，修改了下面几行
root /var/www;
access_log /var/log/nginx/access.log main;
error_log /var/log/nginx/error.log;
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root html;
}
}
}
rsyslog的配置
[root@db2 ~]# grep -v ^# /etc/rsyslog.conf|sed '/^$/d' $ModLoad imuxsock # provides support for local system logging (e.g. via logger command) $ModLoad imklog # provides kernel logging support (previously done by rklogd) $ModLoad imfile # imfile模块必须启用 Load the imfile input module $ActionFileDefaultTemplate RSYSLOG_TraditionalFileFormat $IncludeConfig /etc/rsyslog.d/*.conf *.info;mail.none;authpriv.none;cron.none /var/log/messages authpriv.* /var/log/secure mail.* -/var/log/maillog cron.* /var/log/cron *.emerg * uucp,news.crit /var/log/spooler local7.* /var/log/boot.log #下面是nginx的设置 $InputFileName /var/log/nginx/error.log $InputFileTag kibana-nginx-errorlog: $InputFileStateFile state-kibana-nginx-errorlog $InputRunFileMonitor $InputFileName /var/log/nginx/access.log $InputFileTag kibana-nginx-accesslog: $InputFileStateFile state-kibana-nginx-accesslog $InputRunFileMonitor $InputFilePollInterval 10 #等待10秒钟发送一次 if $programname == 'kibana-nginx-errorlog' then @192.168.10.1:514 if $programname == 'kibana-nginx-errorlog' then ~ if $programname == 'kibana-nginx-accesslog' then @192.168.10.1:514 if $programname == 'kibana-nginx-accesslog' then ~ *.* @192.168.10.1:514
配置说明：
$InputFileTag定义的NAME必须唯一，同一台主机上不同的应用应当使用不同的NAME，否则会导致新定义的TAG不生效；
$InputFileStateFile定义的StateFile必须唯一，它被rsyslog用于记录文件上传进度，否则会导致混乱；
@192.168.10.1:514用于指定接收日志的服务器域名或者主机名；
有需要的话，$InputFileSeverity info 也添加上
再把rsyslog服务重启
[root@db2 ~]# service rsyslog restart Shutting down system logger: [ OK ] Starting system logger: [ OK ]
现在nginx的日志，已经同步到logstash服务器的/var/log/messages，如下图
logstash.conf 配置
input {
file {
type => "syslog"
# path => [ "/var/log/*.log", "/var/log/messages", "/var/log/syslog" ]
path => [ "/var/log/messages" ]
sincedb_path => "/var/sincedb"
}
redis {
host => "192.168.10.1"
type => "redis-input"
data_type => "list"
key => "logstash"
}
syslog {
type => "syslog"
port => "5544"
}
}
filter {
grok {
type => "syslog"
match => [ "message", "%{SYSLOGBASE2}" ]
add_tag => [ "syslog", "grokked" ]
}
}
output {
elasticsearch { host => "192.168.10.1" }
}
nginx的日志：
Feb 26 14:41:47 db2 kibana-nginx-accesslog: 192.168.10.50 - - [26/Feb/2015:14:41:42 +0800] "GET / HTTP/1.1" 304 0 "-" "Mozilla/5.0 (Windows NT 6.2; WOW64; Trident/7.0; rv:11.0) like Gecko LBBROWSER" "-"
logstash界面：
参考：
https://medium.com/@thomasdecaux/exploit-nginx-access-log-with-rsyslog-logstash-elasticsearch-and-kibana-48ab5c71b42d
https://blog.basefarm.com/blog/how-to-install-logstash-with-kibana-interface-on-rhel/
http://ialloc.org/posts/2014/07/06/nginx-notes-log-syslog/
http://w.gdu.me/wiki/Linux/rsyslog_logrotate.html
http://xstarcd.github.io/wiki/Linux/rsyslog_logrotate.html