==> /var/log/nginx/error.log <==
2018/03/22 14:12:10 [debug] 16013#16013: *9 post event 0000557ED8579CC0
2018/03/22 14:12:10 [debug] 16013#16013: *9 delete posted event 0000557ED8579CC0
2018/03/22 14:12:10 [debug] 16013#16013: *9 http keepalive handler
2018/03/22 14:12:10 [debug] 16013#16013: *9 malloc: 0000557ED85621F0:1024
2018/03/22 14:12:10 [debug] 16013#16013: *9 recv: fd:4 424 of 1024
2018/03/22 14:12:10 [debug] 16013#16013: *9 reusable connection: 0
2018/03/22 14:12:10 [debug] 16013#16013: *9 posix_memalign: 0000557ED858BC10:4096 @16
2018/03/22 14:12:10 [debug] 16013#16013: *9 event timer del: 4: 1521717186260
2018/03/22 14:12:10 [debug] 16013#16013: *9 http process request line
2018/03/22 14:12:10 [debug] 16013#16013: *9 http request line: "GET / HTTP/1.1"
2018/03/22 14:12:10 [debug] 16013#16013: *9 http uri: "/"
2018/03/22 14:12:10 [debug] 16013#16013: *9 http args: ""
2018/03/22 14:12:10 [debug] 16013#16013: *9 http exten: ""
2018/03/22 14:12:10 [debug] 16013#16013: *9 posix_memalign: 0000557ED8576450:4096 @16
2018/03/22 14:12:10 [debug] 16013#16013: *9 http process request header line
2018/03/22 14:12:10 [debug] 16013#16013: *9 http header: "Host: localhost"
2018/03/22 14:12:10 [debug] 16013#16013: *9 http header: "Connection: keep-alive"
2018/03/22 14:12:10 [debug] 16013#16013: *9 http header: "Pragma: no-cache"
2018/03/22 14:12:10 [debug] 16013#16013: *9 http header: "Cache-Control: no-cache"
2018/03/22 14:12:10 [debug] 16013#16013: *9 http header: "User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36"
2018/03/22 14:12:10 [debug] 16013#16013: *9 http header: "Upgrade-Insecure-Requests: 1"
2018/03/22 14:12:10 [debug] 16013#16013: *9 http header: "Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8"
2018/03/22 14:12:10 [debug] 16013#16013: *9 http header: "Accept-Encoding: gzip, deflate, br"
2018/03/22 14:12:10 [debug] 16013#16013: *9 http header: "Accept-Language: en-US,en;q=0.9,ru;q=0.8"
2018/03/22 14:12:10 [debug] 16013#16013: *9 http header done
2018/03/22 14:12:10 [debug] 16013#16013: *9 generic phase: 0
2018/03/22 14:12:10 [debug] 16013#16013: *9 rewrite phase: 1
2018/03/22 14:12:10 [debug] 16013#16013: *9 http finalize request: 520, "/?" a:1, c:1
2018/03/22 14:12:10 [debug] 16013#16013: *9 http special response: 520, "/?"
2018/03/22 14:12:10 [debug] 16013#16013: *9 internal redirect: "/plug.html?"
2018/03/22 14:12:10 [debug] 16013#16013: *9 rewrite phase: 1
2018/03/22 14:12:10 [debug] 16013#16013: *9 http finalize request: 520, "/plug.html?" a:1, c:2
2018/03/22 14:12:10 [debug] 16013#16013: *9 http special response: 520, "/plug.html?"
2018/03/22 14:12:10 [debug] 16013#16013: *9 http set discard body
2018/03/22 14:12:10 [debug] 16013#16013: *9 xslt filter header
2018/03/22 14:12:10 [debug] 16013#16013: *9 HTTP/1.1 520
Server: nginx/1.10.3 (Ubuntu)
Date: Thu, 22 Mar 2018 11:12:10 GMT
Content-Length: 0
Connection: keep-alive
2018/03/22 14:12:10 [debug] 16013#16013: *9 write new buf t:1 f:0 0000557ED858CB30, pos 0000557ED858CB30, size: 128 file: 0, size: 0
2018/03/22 14:12:10 [debug] 16013#16013: *9 http write filter: l:0 f:0 s:128
2018/03/22 14:12:10 [debug] 16013#16013: *9 http output filter "/plug.html?"
2018/03/22 14:12:10 [debug] 16013#16013: *9 http copy filter: "/plug.html?"
2018/03/22 14:12:10 [debug] 16013#16013: *9 image filter
2018/03/22 14:12:10 [debug] 16013#16013: *9 xslt filter body
2018/03/22 14:12:10 [debug] 16013#16013: *9 http postpone filter "/plug.html?" 00007FFD09BE8780
2018/03/22 14:12:10 [debug] 16013#16013: *9 write old buf t:1 f:0 0000557ED858CB30, pos 0000557ED858CB30, size: 128 file: 0, size: 0
2018/03/22 14:12:10 [debug] 16013#16013: *9 write new buf t:0 f:0 0000000000000000, pos 0000000000000000, size: 0 file: 0, size: 0
2018/03/22 14:12:10 [debug] 16013#16013: *9 http write filter: l:1 f:0 s:128
2018/03/22 14:12:10 [debug] 16013#16013: *9 http write filter limit 0
2018/03/22 14:12:10 [debug] 16013#16013: *9 writev: 128 of 128
2018/03/22 14:12:10 [debug] 16013#16013: *9 http write filter 0000000000000000
2018/03/22 14:12:10 [debug] 16013#16013: *9 http copy filter: 0 "/plug.html?"
2018/03/22 14:12:10 [debug] 16013#16013: *9 http finalize request: 0, "/plug.html?" a:1, c:2
2018/03/22 14:12:10 [debug] 16013#16013: *9 http request count:2 blk:0
2018/03/22 14:12:10 [debug] 16013#16013: *9 http finalize request: -4, "/plug.html?" a:1, c:1
2018/03/22 14:12:10 [debug] 16013#16013: *9 set http keepalive handler
2018/03/22 14:12:10 [debug] 16013#16013: *9 http close request
2018/03/22 14:12:10 [debug] 16013#16013: *9 http log handler
2018/03/22 14:12:10 [debug] 16013#16013: *9 free: 0000557ED858BC10, unused: 24
2018/03/22 14:12:10 [debug] 16013#16013: *9 free: 0000557ED8576450, unused: 2179
2018/03/22 14:12:10 [debug] 16013#16013: *9 free: 0000557ED85621F0
2018/03/22 14:12:10 [debug] 16013#16013: *9 hc free: 0000000000000000 0
2018/03/22 14:12:10 [debug] 16013#16013: *9 hc busy: 0000000000000000 0
2018/03/22 14:12:10 [debug] 16013#16013: *9 reusable connection: 1
2018/03/22 14:12:10 [debug] 16013#16013: *9 event timer add: 4: 65000:1521717195615
2018/03/22 14:12:10 [debug] 16013#16013: *9 post event 0000557ED8579CC0
2018/03/22 14:12:10 [debug] 16013#16013: *9 delete posted event 0000557ED8579CC0
2018/03/22 14:12:10 [debug] 16013#16013: *9 http keepalive handler
2018/03/22 14:12:10 [debug] 16013#16013: *9 malloc: 0000557ED85621F0:1024
2018/03/22 14:12:10 [debug] 16013#16013: *9 recv: fd:4 -1 of 1024
2018/03/22 14:12:10 [debug] 16013#16013: *9 recv() not ready (11: Resource temporarily unavailable)
2018/03/22 14:12:10 [debug] 16013#16013: *9 free: 0000557ED85621F0
==> /var/log/nginx/nginx-www-access.log <==
{ "@timestamp": "2018-03-22T14:12:10+03:00", "http_host": "localhost", "remote_addr": "127.0.0.1", "X-Real-IP": "-", "time_local": "22/Mar/2018:14:12:10 +0300", "scheme": "http", "request": "GET / HTTP/1.1", "request_time": "0.000", "response": "520", "body_bytes_sent": "0", "request_method": "GET", "http_referrer": "-", "http_user_agent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36", "upstream_addr": "-", "upstream_status": "-", "upstream_response_time": "-", "upstream_connect_time": "-", "upstream_header_time": "-", "X-ProvidedBy": "-", "X-Real-Email": "-","X-OriginHost": "-","Cache-Status": "-" }