nginx访问日志,错误日志参数说明

评论
7,943 次

摘要

nginx日志主要有两种：访问日志、错误日志。其中访问日志记录客户端访问nginx的每一个请求，包含用户地域来源、跳转来源、使用终端、某个URL访问量等信息，访问日志格式可以自定义；错误日志则记录客户端访问nginx出错时的日志，格式不支持自定义，通过错误日志，你可以得到系统某个服务或server的性能瓶颈等。两种日志都可以选择性关闭。

访问日志[Access.log]

'$remote_addr $remote_user [$time_local] "$request" $http_host'
'$status $upstream_status $body_bytes_sent "$http_referer"'
'"$http_user_agent" $ssl_protocol $ssl_cipher $upstream_addr'
'$request_time $upstream_response_time';

变量名称	变量描述	举例说明
$remote_addr	客户端地址	113.140.15.90
$remote_user	客户端用户名称	-
$time_local	访问时间和时区	18/Jul/2012:17:00:01 +0800
$request	请求的URI和HTTP协议	"GET /pa/img/home/logo-alipay-t.png HTTP/1.1"
$http_host	请求地址，即浏览器中你输入的地址（IP或域名）	img.alipay.com 10.253.70.103
$status	HTTP请求状态	200
$upstream_status	upstream状态	200
$body_bytes_sent	发送给客户端文件内容大小	547
$http_referer	跳转来源	https://cashier.alipay.com…/ “
$http_user_agent	用户终端代理	Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; SV1; GTB7.0; .NET4.0C;
$ssl_protocol	SSL协议版本	TLSv1
$ssl_cipher	交换数据中的算法	RC4-SHA
$upstream_addr	后台upstream的地址，即真正提供服务的主机地址	10.228.35.247:80
$request_time	整个请求的总时间	0.205
$upstream_response_time	请求过程中，upstream响应时间	0.002

线上实例：

116.9.137.90 – [02/Aug/2012:14:47:12 +0800] “GET /images/XX/20100324752729.png HTTP/1.1″ 
img.alipay.com 200 200 2038 https://cashier.alipay.com/XX/PaymentResult.htm?payNo=XX&amp;outBizNo=2012XX 
“Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; Tablet PC 2.0; 360SE)”
 TLSv1 AES128-SHA 10.228.21.237:80 0.198 0.001

线下测试（$http_referer）：

10.14.21.197 – – [14/Aug/2012:17:28:22 +0800] “GET /spanner/watch/v1?–db=ztg-1&amp;–mode=compare&amp;–index=status&amp;–option=&amp;–cluster=whole&amp;-F=2012%2F8%2F12-00%3A00%3A00&amp;-T=%2B2880&amp;-i=1&amp;-n=0&amp;_=1344936501292 HTTP/1.1” 200 94193 “http://spanner.alipay.net/optionFrame/history.html” “Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.1 (KHTML, like Gecko) Chrome/21.0.1180.60 Safari/537.1”

备注：$http_referer和重定向有关。

错误日志[Error.log]

错误信息	错误说明
upstream prematurely（过早的） closed connection	请求uri的时候出现的异常，是由于upstream还未返回应答给用户时用户断掉连接造成的，对系统没有影响，可以忽略。
recv() failed (104: Connection reset by peer)	⑴、服务器的并发连接数超过了其承载量，服务器会将其中一些连接Down掉； ⑵、客户关掉了浏览器，而服务器还在给客户端发送数据； ⑶、浏览器端按了Stop
(111: Connection refused) while connecting to upstream	用户在连接时，若遇到后端upstream挂掉或者不通。
(111: Connection refused) while reading response header from upstream	用户在连接成功后读取数据时，若遇到后端upstream挂掉或者不通。
(111: Connection refused) while sending request to upstream	Nginx和upstream连接成功后发送数据时，若遇到后端upstream挂掉或者不通。
(110: Connection timed out) while connecting to upstream	nginx连接后面的upstream时超时
(110: Connection timed out) while reading upstream	nginx读取来自upstream的响应时超时
(110: Connection timed out) while reading response header from upstream	nginx读取来自upstream的响应头时超时
(110: Connection timed out) while reading upstream	nginx读取来自upstream的响应时超时
(104: Connection reset by peer) while connecting to upstream	upstream发送了RST，将连接重置
upstream sent invalid header while reading response header from upstream	upstream发送的响应头无效
upstream sent no valid HTTP/1.0 header while reading response header from upstream	upstream发送的响应头无效
client intended to send too large body	用于设置允许接受的客户端请求内容的最大值，默认值是1M，client发送的body超过了设置值
reopening logs	用户发送kill -USR1命令
gracefully shutting down	用户发送kill -WINCH命令
no servers are inside upstream	upstream下未配置server
no live upstreams while connecting to upstream	upstream下的server全都挂了
SSL_do_handshake() failed	SSL握手失败
SSL_write() failed (SSL:) while sending to client
(13: Permission denied) while reading upstream
(98: Address already in use) while connecting to upstream
(99: Cannot assign requested address) while connecting to upstream
ngx_slab_alloc() failed: no memory in SSL session shared cache	ssl_session_cache大小不够等原因造成
could not add new SSL session to the session cache while SSL handshaking	ssl_session_cache大小不够等原因造成
send() failed (111: Connection refused)