Nginx日志配置以及如何让它工作

6psbrbz9  于 2023-04-29  发布在  Nginx
关注(0)|答案(4)|浏览(118)

我配置了nginx。如下所示。但是,在运行客户端请求后,我在日志文件中仍然看不到任何内容。我刚开始学习nginx模块开发。

#user  nobody;
worker_processes  1;

pid        logs/nginx.pid;

events {
    worker_connections  1024;
}

http {
    include       mime.types;
    default_type  application/octet-stream;
    error_log     logs/error.log debug;

    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                      '$status $body_bytes_sent "$http_referer" '
                      '"$http_user_agent" "$http_x_forwarded_for"';

    access_log  logs/access.log  combined;

    sendfile        on;
    #tcp_nopush     on;

在其中一个模块代码中,我调用了日志记录函数,如下所示。

ngx_log_debug0(NGX_LOG_INFO, r->connection->log, 0, "Calling ngx_http_hello_world_handler");

重启nginx服务器进程(sudo ../nginx-1.12.1-install/sbin/nginx),我使用以下命令执行HTTP GET:

wget http://localhost/test
--2017-09-05 19:28:30--  http://localhost/test
Resolving localhost... ::1, 127.0.0.1
Connecting to localhost|::1|:80... failed: Connection refused.
Connecting to localhost|127.0.0.1|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 12 [text/plain]
Saving to: ‘test’

test                                                       100%[======================================================================================================================================>]      12  --.-KB/s    in 0s      

2017-09-05 19:28:30 (1.91 MB/s) - ‘test’ saved [12/12]

我看到了错误。日志文件包含如下,但我打印的日志没有出来。

2017/09/05 21:53:02 [debug] 94100#0: accept on 0.0.0.0:80, ready: 1
2017/09/05 21:53:02 [debug] 94100#0: posix_memalign: 00007FA982D00EA0:512 @16
2017/09/05 21:53:02 [debug] 94100#0: *4 accept: 127.0.0.1:55276 fd:11
2017/09/05 21:53:02 [debug] 94100#0: *4 event timer add: 11: 60000:1504673642557
2017/09/05 21:53:02 [debug] 94100#0: *4 reusable connection: 1
2017/09/05 21:53:02 [debug] 94100#0: *4 kevent set event: 11: ft:-1 fl:0025
2017/09/05 21:53:02 [debug] 94100#0: *4 http wait request handler
2017/09/05 21:53:02 [debug] 94100#0: *4 malloc: 00007FA983823000:1024
2017/09/05 21:53:02 [debug] 94100#0: *4 recv: eof:0, avail:143, err:0
2017/09/05 21:53:02 [debug] 94100#0: *4 recv: fd:11 143 of 1024
2017/09/05 21:53:02 [debug] 94100#0: *4 reusable connection: 0
2017/09/05 21:53:02 [debug] 94100#0: *4 posix_memalign: 00007FA983819000:4096 @16
2017/09/05 21:53:02 [debug] 94100#0: *4 http process request line
2017/09/05 21:53:02 [debug] 94100#0: *4 http request line: "GET /test HTTP/1.1"
2017/09/05 21:53:02 [debug] 94100#0: *4 http uri: "/test"
2017/09/05 21:53:02 [debug] 94100#0: *4 http args: ""
2017/09/05 21:53:02 [debug] 94100#0: *4 http exten: ""
2017/09/05 21:53:02 [debug] 94100#0: *4 http process request header line
2017/09/05 21:53:02 [debug] 94100#0: *4 http header: "User-Agent: Wget/1.19.1 (darwin15.6.0)"
2017/09/05 21:53:02 [debug] 94100#0: *4 http header: "Accept: */*"
2017/09/05 21:53:02 [debug] 94100#0: *4 http header: "Accept-Encoding: identity"
2017/09/05 21:53:02 [debug] 94100#0: *4 http header: "Host: localhost"
2017/09/05 21:53:02 [debug] 94100#0: *4 http header: "Connection: Keep-Alive"
2017/09/05 21:53:02 [debug] 94100#0: *4 http header done
2017/09/05 21:53:02 [debug] 94100#0: *4 event timer del: 11: 1504673642557
2017/09/05 21:53:02 [debug] 94100#0: *4 rewrite phase: 0
2017/09/05 21:53:02 [debug] 94100#0: *4 test location: "/"
2017/09/05 21:53:02 [debug] 94100#0: *4 test location: "test"
2017/09/05 21:53:02 [debug] 94100#0: *4 using configuration "=/test"
2017/09/05 21:53:02 [debug] 94100#0: *4 http cl:-1 max:1048576
2017/09/05 21:53:02 [debug] 94100#0: *4 rewrite phase: 2
2017/09/05 21:53:02 [debug] 94100#0: *4 post rewrite phase: 3
2017/09/05 21:53:02 [debug] 94100#0: *4 generic phase: 4
2017/09/05 21:53:02 [debug] 94100#0: *4 generic phase: 5
2017/09/05 21:53:02 [debug] 94100#0: *4 access phase: 6
2017/09/05 21:53:02 [debug] 94100#0: *4 access phase: 7
2017/09/05 21:53:02 [debug] 94100#0: *4 post access phase: 8
2017/09/05 21:53:02 [debug] 94100#0: *4 posix_memalign: 00007FA98380D400:4096 @16
2017/09/05 21:53:02 [debug] 94100#0: *4 http cleanup add: 00007FA983819FC8
2017/09/05 21:53:02 [debug] 94100#0: *4 HTTP/1.1 200 OK
Server: nginx/1.12.1
Date: Wed, 06 Sep 2017 04:53:02 GMT
Content-Type: text/plain
Content-Length: 12
Connection: keep-alive

2017/09/05 21:53:02 [debug] 94100#0: *4 write new buf t:1 f:0 00007FA98380D528, pos 00007FA98380D528, size: 148 file: 0, size: 0
2017/09/05 21:53:02 [debug] 94100#0: *4 http write filter: l:0 f:0 s:148
2017/09/05 21:53:02 [debug] 94100#0: *4 http output filter "/test?"
2017/09/05 21:53:02 [debug] 94100#0: *4 http copy filter: "/test?"
2017/09/05 21:53:02 [debug] 94100#0: *4 http postpone filter "/test?" 00007FFF56B2F458
2017/09/05 21:53:02 [debug] 94100#0: *4 write old buf t:1 f:0 00007FA98380D528, pos 00007FA98380D528, size: 148 file: 0, size: 0
2017/09/05 21:53:02 [debug] 94100#0: *4 write new buf t:0 f:0 0000000000000000, pos 0000000109173528, size: 12 file: 0, size: 0
2017/09/05 21:53:02 [debug] 94100#0: *4 http write filter: l:1 f:0 s:160
2017/09/05 21:53:02 [debug] 94100#0: *4 http write filter limit 0
2017/09/05 21:53:02 [debug] 94100#0: *4 writev: 160 of 160
2017/09/05 21:53:02 [debug] 94100#0: *4 http write filter 0000000000000000
2017/09/05 21:53:02 [debug] 94100#0: *4 http copy filter: 0 "/test?"
2017/09/05 21:53:02 [debug] 94100#0: *4 http finalize request: 0, "/test?" a:1, c:2
2017/09/05 21:53:02 [debug] 94100#0: *4 http request count:2 blk:0
2017/09/05 21:53:02 [debug] 94100#0: *4 http run request: "/test?"
2017/09/05 21:53:02 [debug] 94100#0: *4 http reading blocked

有人能告诉我我错过了什么吗?

oknrviil

oknrviil1#

这可能是因为您登录到NGX_LOG_INFO, r->connection->log,但您只在http部分启用了error_log ... debug指令。
但是根据文档,error_log可以放在这些上下文中:
上下文:main, http, mail, stream, server, location
我认为NGX_LOG_INFOmain,所以尝试在http之外的顶层添加error_log logs/error.log debug;,如下所示:

...

error_log     logs/error.log debug;

http {
    include       mime.types;
    default_type  application/octet-stream;
    error_log     logs/error.log debug;
    ...

这也解释了为什么从NGX_LOG_INFO更改为NGX_LOG_DEBUG_HTTP时会出现日志消息。

kcrjzv8t

kcrjzv8t2#

您可以尝试删除日志文件并重新启动nginx,以查看是否会创建新的日志文件。我在nginx文件夹中启动,可能路径不正确。nginx可能会在当前文件夹中找到,而不是nginx文件夹。也许有用

dtcbnfnu

dtcbnfnu3#

我通过修改日志参数使日志消息工作,如下所示。

ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "Calling ngx_http_hello_world_handler");

我从NGX_LOG_INFO更改为NGX_LOG_DEBUG_HTTP。我不知道这些组件是什么,但我需要工作和理解的东西。

2017/09/05 22:06:03 [debug] 98383#0: *2 post access phase: 8
2017/09/05 22:06:03 [debug] 98383#0: *2 Calling ngx_http_hello_world_handler
2017/09/05 22:06:03 [debug] 98383#0: *2 Calling ngx_http_hello_world_process_request
2017/09/05 22:06:03 [debug] 98383#0: *2 Calling ngx_http_create_cookie_state
2017/09/05 22:06:03 [debug] 98383#0: *2 posix_memalign: 00007FBA4980E400:4096 @16
2017/09/05 22:06:03 [debug] 98383#0: *2 Calling search_headers_in
2017/09/05 22:06:03 [debug] 98383#0: *2 Calling search_headers_in

现在,我将在所有应用程序代码中继续使用相同的日志消息。

gk7wooem

gk7wooem4#

好吧,虽然这个问题已经发布很久了,我想澄清一下发生了什么,并详细说明一下@AnilJ为解决这个问题所做的工作。我先带你去看ngx_log.h头文件:

#define NGX_LOG_STDERR            0
#define NGX_LOG_EMERG             1
#define NGX_LOG_ALERT             2
#define NGX_LOG_CRIT              3
#define NGX_LOG_ERR               4
#define NGX_LOG_WARN              5
#define NGX_LOG_NOTICE            6
#define NGX_LOG_INFO              7
#define NGX_LOG_DEBUG             8

#define NGX_LOG_DEBUG_CORE        0x010
#define NGX_LOG_DEBUG_ALLOC       0x020
#define NGX_LOG_DEBUG_MUTEX       0x040
#define NGX_LOG_DEBUG_EVENT       0x080
#define NGX_LOG_DEBUG_HTTP        0x100
#define NGX_LOG_DEBUG_MAIL        0x200
#define NGX_LOG_DEBUG_STREAM      0x400

前8个宏是从最高优先级到最低的主日志级别。而第二个堆栈是调试日志级别。如你所见

NGX_LOG_DEBUG_CORE = NGX_LOG_DEBUG * 2; // 0x008 * 2 = 0x010
NGX_LOG_DEBUG_ALLOC = NGX_LOG_DEBUG * 4;  // 0x008 * 4 = 0x020

因此,以下措施应发挥作用:

ngx_log_debug0(16, log, 0, "log this");

为了验证这一点,我们可以看到这里的逻辑:

#define ngx_log_debug(level, log, ...)                                        \
    if ((log)->log_level & level)                                             \
        ngx_log_error_core(NGX_LOG_DEBUG, log, __VA_ARGS__)

如果你在源代码中进一步研究,我们可以看到如果我们将日志级别设置为debug,则会设置以下内容:

// see ngx_log_set_levels
    if (log->log_level == NGX_LOG_DEBUG) {
        log->log_level = NGX_LOG_DEBUG_ALL;
    }

其中NGX_LOG_DEBUG_ALL等于0x 7 ffffff 0

#define NGX_LOG_DEBUG_ALL         0x7ffffff0

返回到问题中的问题,调用以下代码:

ngx_log_debug0(NGX_LOG_INFO, r->connection->log, 0, "Calling 
    ngx_http_hello_world_handler");

由于r->connection->log=NGX_LOG_DEBUG_ALL=0x7ffffff0NGX_LOG_INFO=8

NGX_LOG_INFO & NGX_LOG_DEBUG_ALL = 0x8 & 0x7ffffff0 = false

而且您不会看到任何调试日志。要使它工作,应该选择NGX_LOG_DEBUG_CORE,NGX_LOG_DEBUG_ALLOC,NGX_LOG_DEBUG_MUTEX,NGX_LOG_DEBUG_EVENT,NGX_LOG_DEBUG_MAIL,NGX_LOG_DEBUG_STREAMNGX_LOG_DEBUG_ALL本身之一。

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