List of variables in log format NGINX
Variables:
$ancient_browser equals the value set by the ancient_browser_value directive, if a browser was identified as ancient $arg_ argument in the request line $args arguments in the request line $binary_remote_addr client address in a binary form, value’s length is always 4 bytes for IPv4 addresses or 16 bytes for IPv6 addresses $body_bytes_sent number of bytes sent to a client, not counting the response header; this variable is compatible with the “%B” parameter of the mod_log_config Apache module $bytes_sent number of bytes sent to a client (1.3.8, 1.2.5) $connection connection serial number (1.3.8, 1.2.5) $connection_requests current number of requests made through a connection (1.3.8, 1.2.5) $connections_active same as the Active connections value $connections_reading same as the Reading value $connections_waiting same as the Waiting value $connections_writing same as the Writing value $content_length “Content-Length” request header field $content_type “Content-Type” request header field $cookie_ the named cookie $date_gmt current time in GMT. The format is set by the config command with the timefmt parameter $date_local current time in the local time zone. The format is set by the config command with the timefmt parameter $document_root root or alias directive’s value for the current request $document_uri same as $uri $fastcgi_path_info the value of the second capture set by the fastcgi_split_path_info directive. This variable can be used to set the PATH_INFO parameter $fastcgi_script_name request URI or, if a URI ends with a slash, request URI with an index file name configured by the fastcgi_index directive appended to it. This variable can be used to set the SCRIPT_FILENAME and PATH_TRANSLATED parameters that determine the script name in PHP. For example, for the “/info/” request with the following directives fastcgi_index index.php; fastcgi_param SCRIPT_FILENAME /home/www/scripts/php$fastcgi_script_name; the SCRIPT_FILENAME parameter will be equal to “/home/www/scripts/php/info/index.php” $geoip_area_code telephone area code (US only) $geoip_city city name, for example, “Moscow”, “Washington” $geoip_city_continent_code two-letter continent code, for example, “EU”, “NA” $geoip_city_country_code two-letter country code, for example, “RU”, “US” $geoip_city_country_code3 three-letter country code, for example, “RUS”, “USA” $geoip_city_country_name country name, for example, “Russian Federation”, “United States” $geoip_country_code two-letter country code, for example, “RU”, “US” $geoip_country_code3 three-letter country code, for example, “RUS”, “USA” $geoip_country_name country name, for example, “Russian Federation”, “United States” $geoip_dma_code DMA region code in US (also known as “metro code”), according to the geotargeting in Google AdWords API $geoip_latitude latitude $geoip_longitude longitude $geoip_org organization name, for example, “The University of Melbourne” $geoip_postal_code postal code $geoip_region two-symbol country region code (region, territory, state, province, federal land and the like), for example, “48”, “DC” $geoip_region_name country region name (region, territory, state, province, federal land and the like), for example, “Moscow City”, “District of Columbia” $gzip_ratio achieved compression ratio, computed as the ratio between the original and compressed response sizes $host in this order of precedence: host name from the request line, or host name from the “Host” request header field, or the server name matching a request $hostname host name $http2 negotiated protocol identifier: “h2” for HTTP/2 over TLS, “h2c” for HTTP/2 over cleartext TCP, or an empty string otherwise $http_ arbitrary request header field; the last part of the variable name is the field name converted to lower case with dashes replaced by underscores. Examples: $http_referer, $http_user_agent $https “on” if connection operates in SSL mode, or an empty string otherwise $invalid_referer Empty string, if the “Referer” request header field value is considered valid, otherwise “1” $is_args “?” if a request line has arguments, or an empty string otherwise $limit_rate setting this variable enables response rate limiting; see limit_rate $memcached_key Defines a key for obtaining response from a memcached server $modern_browser equals the value set by the modern_browser_value directive, if a browser was identified as modern $msec current time in seconds with the milliseconds resolution (1.3.9, 1.2.6) $msie equals “1” if a browser was identified as MSIE of any version $nginx_version nginx version $pid PID of the worker process $pipe “p” if request was pipelined, “.” otherwise (1.3.12, 1.2.7) $proxy_add_x_forwarded_for the “X-Forwarded-For” client request header field with the $remote_addr variable appended to it, separated by a comma. If the “X-Forwarded-For” field is not present in the client request header, the $proxy_add_x_forwarded_for variable is equal to the $remote_addr variable $proxy_host name and port of a proxied server as specified in the proxy_pass directive $proxy_port port of a proxied server as specified in the proxy_pass directive, or the protocol’s default port $proxy_protocol_addr client address from the PROXY protocol header, or an empty string otherwise (1.5.12). the PROXY protocol must be previously enabled by setting the proxy_protocol parameter in the listen directive. $proxy_protocol_port client port from the PROXY protocol header, or an empty string otherwise (1.11.0). the PROXY protocol must be previously enabled by setting the proxy_protocol parameter in the listen directive. $query_string same as $args $realip_remote_addr keeps the original client address (1.9.7) $realip_remote_port keeps the original client port (1.11.0) $realpath_root an absolute pathname corresponding to the root or alias directive’s value for the current request, with all symbolic links resolved to real paths $remote_addr client address $remote_port client port $remote_user user name supplied with the Basic authentication $request full original request line $request_body request bod. The variable’s value is made available in locations processed by the proxy_pass, fastcgi_pass, uwsgi_pass, and scgi_pass directives. $request_body_file name of a temporary file with the request body. At the end of processing, the file needs to be removed. To always write the request body to a file, client_body_in_file_only needs to be enabled. When the name of a temporary file is passed in a proxied request or in a request to a FastCGI/uwsgi/SCGI server, passing the request body should be disabled by the proxy_pass_request_body off, fastcgi_pass_request_body off, uwsgi_pass_request_body off, or scgi_pass_request_body off directives, respectively. $request_completion “OK” if a request has completed, or an empty string otherwise $request_filename file path for the current request, based on the root or alias directives, and the request URI $request_id unique request identifier generated from 16 random bytes, in hexadecimal (1.11.0) $request_length request length (including request line, header, and request body) (1.3.12, 1.2.7) $request_method request method, usually “GET” or “POST” $request_time request processing time in seconds with a milliseconds resolution (1.3.9, 1.2.6); time elapsed since the first bytes were read from the client $request_uri full original request URI (with arguments) $scheme request scheme, “http” or “https” $secure_link The status of a link check. The specific value depends on the selected operation mode $secure_link_expires The lifetime of a link passed in a request; intended to be used only in the secure_link_md5 directive $sent_http_ arbitrary response header field; the last part of the variable name is the field name converted to lower case with dashes replaced by underscores $server_addr an address of the server which accepted a request. Computing a value of this variable usually requires one system call. To avoid a system call, the listen directives must specify addresses and use the bind parameter. $server_name name of the server which accepted a request $server_port port of the server which accepted a request $server_protocol request protocol, usually “HTTP/1.0”, “HTTP/1.1”, or “HTTP/2.0” $session_log_binary_id current session ID in binary form (16 bytes) $session_log_id current session ID $slice_range the current slice range in HTTP byte range format, for example, bytes=0-1048575 $spdy SPDY protocol version for SPDY connections, or an empty string otherwise $spdy_request_priority request priority for SPDY connections, or an empty string otherwise $ssl_cipher returns the string of ciphers used for an established SSL connection $ssl_client_cert returns the client certificate in the PEM format for an established SSL connection, with each line except the first prepended with the tab character; this is intended for the use in the proxy_set_header directive $ssl_client_fingerprint returns the SHA1 fingerprint of the client certificate for an established SSL connection (1.7.1) $ssl_client_i_dn returns the “issuer DN” string of the client certificate for an established SSL connection $ssl_client_raw_cert returns the client certificate in the PEM format for an established SSL connection $ssl_client_s_dn returns the “subject DN” string of the client certificate for an established SSL connection $ssl_client_serial returns the serial number of the client certificate for an established SSL connection $ssl_client_verify returns the result of client certificate verification: “SUCCESS”, “FAILED”, and “NONE” if a certificate was not present $ssl_protocol returns the protocol of an established SSL connection $ssl_server_name returns the server name requested through SNI (1.7.0) $ssl_session_id returns the session identifier of an established SSL connection $ssl_session_reused returns “r” if an SSL session was reused, or “.” otherwise (1.5.11) $status response status (1.3.2, 1.2.2) $tcpinfo_rtt, $tcpinfo_rttvar, $tcpinfo_snd_cwnd, $tcpinfo_rcv_space information about the client TCP connection; available on systems that support the TCP_INFO socket option $time_iso8601 local time in the ISO 8601 standard format (1.3.12, 1.2.7) $time_local local time in the Common Log Format (1.3.12, 1.2.7) $uid_got The cookie name and received client identifier $uid_reset If the variable is set to a non-empty string that is not “0”, the client identifiers are reset. The special value “log” additionally leads to the output of messages about the reset identifiers to the error_log $uid_set The cookie name and sent client identifier $upstream_addr keeps the IP address and port, or the path to the UNIX-domain socket of the upstream server. If several servers were contacted during request processing, their addresses are separated by commas, e.g. “192.168.1.1:80, 192.168.1.2:80, unix:/tmp/sock”. If an internal redirect from one server group to another happens, initiated by “X-Accel-Redirect” or error_page, then the server addresses from different groups are separated by colons, e.g. “192.168.1.1:80, 192.168.1.2:80, unix:/tmp/sock : 192.168.10.1:80, 192.168.10.2:80” $upstream_cache_status keeps the status of accessing a response cache (0.8.3). The status can be either “MISS”, “BYPASS”, “EXPIRED”, “STALE”, “UPDATING”, “REVALIDATED”, or “HIT” $upstream_connect_time time spent on establishing a connection with an upstream server $upstream_cookie_ cookie with the specified name sent by the upstream server in the “Set-Cookie” response header field (1.7.1). Only the cookies from the response of the last server are saved $upstream_header_time time between establishing a connection and receiving the first byte of the response header from the upstream server $upstream_http_ keep server response header fields. For example, the “Server” response header field is available through the $upstream_http_server variable. The rules of converting header field names to variable names are the same as for the variables that start with the “$http_” prefix. Only the header fields from the response of the last server are saved $upstream_response_length keeps the length of the response obtained from the upstream server (0.7.27); the length is kept in bytes. Lengths of several responses are separated by commas and colons like addresses in the $upstream_addr variable $upstream_response_time time between establishing a connection and receiving the last byte of the response body from the upstream server $upstream_status keeps status code of the response obtained from the upstream server. Status codes of several responses are separated by commas and colons like addresses in the $upstream_addr variable $uri current URI in request, normalized. The value of $uri may change during request processing, e.g. when doing internal redirects, or when using index files.
Declare log format in http block:
log_format upstream_time '$remote_addr - $remote_user [$time_local] '
'"$request" $status $body_bytes_sent '
'"$http_referer" "$http_user_agent"'
'rt=$request_time uct="$upstream_connect_time";
Usage format:
//in the section to log use this
access_log /spool/logs/nginx-access.log upstream_time;
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