logstash收集nginx日志

（1）安装nginx

1.安装nginx

yum install epel-release -y 
yum install nginx -y 

2.修改日志文件格式为json

#vim /etc/nginx/nginx.conf 
http {
    log_format access_json '{"@timestamp":"$time_iso8601",'
                           '"host":"$server_addr",'
                           '"clientip":"$remote_addr",'
                           '"size":$body_bytes_sent,'
                           '"responsetime":$request_time,'
                           '"upstreamtime":"$upstream_response_time",'
                           '"upstreamhost":"$upstream_addr",'
                           '"http_host":"$host",'
                           '"url":"$uri",'
                           '"domain":"$host",'
                           '"xff":"$http_x_forwarded_for",'
                           '"referer":"$http_referer",'
                           '"status":"$status"}';
    access_log  /var/log/nginx/access.log  access_json;
	}

3.启动nginx

systemctl start nginx 
systemctl enable nginx 

4.压测

ab -n 1000 -c 1  http://192.168.1.31/index.html

5.查看日志

# tail -1 /var/log/nginx/access.log 
{"@timestamp":"2018-05-29T14:56:35+08:00","host":"192.168.1.31","clientip":"192.168.1.31","size":3700,"responsetime":0.000,"upstreamtime":"-","upstreamhost":"-","http_host":"192.168.1.31","url":"/index.html","domain":"192.168.1.31","xff":"-","referer":"-","status":"200"}

（2）logstash配置

1.logstash配置

#vim /etc/logstash/conf.d/nginx-access-log.conf 
input {
        file {
                path => "/var/log/nginx/access.log"
                type => "nginx-access-log"
                start_position => "beginning"
                stat_interval => "2"
                }
        }

output {
        if [type] == "nginx-access-log" {
                elasticsearch {
                        hosts => ["192.168.1.31:9200"]
                        index => "nginx-access-log-%{+YYYY.MM.dd}"
                }
        }
        file {
        path => "/tmp/logstash-nginx-access-log-%{+YYYY.MM.dd}"
         }
}

2.检测配置文件语法和启动

logstash -f /etc/logstash/conf.d/nginx-access-log -t 
systemctl restart logstash 

3.head插件查看索引

4.kibana查看