nginx 日志输出json格式

背景

nginx 默认输出acces日志格式是message格式。现在都做日志统一分析ELK了，message格式就不是很适用了。 所以输出json格式就应用而生了。

修改 nginx.conf 配置文件， 注释掉之前 log_format 重新写一个 json格式的log_format

log_format main   '{"@timestamp":"$time_iso8601",'
                    '"@source":"$server_addr",'
                    '"hostname":"$hostname",'
                    '"remote_user":"$remote_user",'
                    '"ip":"$http_x_forwarded_for",'
                    '"client":"$remote_addr",'
                    '"request_method":"$request_method",'
                    '"scheme":"$scheme",'
                    '"domain":"$server_name",'
                    '"referer":"$http_referer",'
                    '"request":"$request_uri",'
                    '"requesturl":"$request",'
                    '"args":"$args",'
                    '"size":$body_bytes_sent,'
                    '"status": $status,'
                    '"responsetime":$request_time,'
                    '"upstreamtime":"$upstream_response_time",'
                    '"upstreamaddr":"$upstream_addr",'
                    '"http_user_agent":"$http_user_agent",'
                    '"http_cookie":"$http_cookie",'
                    '"https":"$https"'
                    '}';

access_log  /var/log/nginx/access.log  main;

重新加载nginx，access日志就是json格式了

日志输出结果如下：

{"@timestamp":"2022-03-04T10:15:01+08:00","@source":"172.24.215.134","hostname":"bfdaitidv01","remote_user":"-","ip":"-","client":"10.24.42.162","request_method":"GET","scheme":"http","domain":"localhost","referer":"-","request":"/echo","requesturl":"GET /echo HTTP/1.1","args":"-","size":421,"status": 200,"responsetime":0.000,"upstreamtime":"-","upstreamaddr":"-","http_user_agent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.66 Safari/537.36","http_cookie":"theme_cookie=dark-theme; Admin-Token=eyJhbGciOiJIUzUxMiJ9.eyJsb2dpbl91c2VyX2tleSI6Ijc3NDJmMTJiLTI1NjgtNDkyNC05NzYwLTE0MTc4NTkyMjE3YyJ9._nrIszd6ZRjiVjGXSQqra-9i1qbEfNFTBWfv-YQUQEaGzayC5HheGvSWGEuXU8T0uT6CkLWxReLWyQnvoJnEew","https":""}

参考资料：
ngx_http_log_module