$變量名

set $變量名 變量值

查看已經(jīng)安裝的nginx的版本
[root@192 ~]# nginx -V 
下載echo模塊的安裝包
[root@192 ~]# wget https://github.com/openresty/echo-nginx-module/archive/v0.61.tar.gz
[root@192 ~]# ls
anaconda-ks.cfg  nginx-1.16.0.tar.gz  v0.61.tar.gz
解壓到相同路徑下:
[root@192 ~]# tar xzf nginx-1.16.0.tar.gz -C /usr/local/
[root@192 ~]# tar xzf v0.61.tar.gz -C /usr/local/
安裝編譯工具
[root@192 ~]# cd /usr/local/
[root@192 local]# yum -y install pcre pcre-devel openssl openssl-devel gcc gcc-c++   zlib zlib-devel
添加模塊：
[root@192 local]# cd nginx-1.16.0/
添加上原來(lái)已經(jīng)有的參數(shù)和新添加的模塊:
[root@192 nginx-1.16.0]# ./configure --prefix=/etc/nginx --sbin-path=/usr/sbin/nginx --modules-path=/usr/lib64/nginx/modules --conf-path=/etc/nginx/nginx.conf --error-log-path=/var/log/nginx/error.log --http-log-path=/var/log/nginx/access.log --pid-path=/var/run/nginx.pid --lock-path=/var/run/nginx.lock --http-client-body-temp-path=/var/cache/nginx/client_temp --http-proxy-temp-path=/var/cache/nginx/proxy_temp --http-fastcgi-temp-path=/var/cache/nginx/fastcgi_temp --http-uwsgi-temp-path=/var/cache/nginx/uwsgi_temp --http-scgi-temp-path=/var/cache/nginx/scgi_temp --user=nginx --group=nginx --with-compat --with-file-aio --with-threads --with-http_addition_module --with-http_auth_request_module --with-http_dav_module --with-http_flv_module --with-http_gunzip_module --with-http_gzip_static_module --with-http_mp4_module --with-http_random_index_module --with-http_realip_module --with-http_secure_link_module --with-http_slice_module --with-http_ssl_module --with-http_stub_status_module --with-http_sub_module --with-http_v2_module --with-mail --with-mail_ssl_module --with-stream --with-stream_realip_module --with-stream_ssl_module --with-stream_ssl_preread_module --with-cc-opt='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -m64 -mtune=generic -fPIC' --with-ld-opt='-Wl,-z,relro -Wl,-z,now -pie' --add-module=/usr/local/echo-nginx-module-0.61
[root@192 nginx-1.16.0]# make   #編譯，不要make install 否則會(huì)覆蓋原來(lái)的文件
[root@192 nginx-1.16.0]#  mv /usr/local/nginx/sbin/nginx /usr/local/nginx/sbin/nginx_bak2 #將原來(lái)的nignx備份
[root@192 nginx-1.16.0]# cp objs/nginx /usr/local/nginx/sbin/  拷貝nignx
[root@192 nginx-1.16.0]# /usr/local/nginx/sbin/nginx  #啟動(dòng)
[root@192 nginx-1.16.0]# nginx -V  查看模塊是否添加成功
nginx version: nginx/1.16.0
built by gcc 4.8.5 20150623 (Red Hat 4.8.5-36) (GCC) 
built with OpenSSL 1.0.2k-fips  26 Jan 2017
TLS SNI support enabled
configure arguments: --prefix=/etc/nginx --sbin-path=/usr/sbin/nginx --modules-path=/usr/lib64/nginx/modules --conf-path=/etc/nginx/nginx.conf --error-log-path=/var/log/nginx/error.log --http-log-path=/var/log/nginx/access.log --pid-path=/var/run/nginx.pid --lock-path=/var/run/nginx.lock --http-client-body-temp-path=/var/cache/nginx/client_temp --http-proxy-temp-path=/var/cache/nginx/proxy_temp --http-fastcgi-temp-path=/var/cache/nginx/fastcgi_temp --http-uwsgi-temp-path=/var/cache/nginx/uwsgi_temp --http-scgi-temp-path=/var/cache/nginx/scgi_temp --user=nginx --group=nginx --with-compat --with-file-aio --with-threads --with-http_addition_module --with-http_auth_request_module --with-http_dav_module --with-http_flv_module --with-http_gunzip_module --with-http_gzip_static_module --with-http_mp4_module --with-http_random_index_module --with-http_realip_module --with-http_secure_link_module --with-http_slice_module --with-http_ssl_module --with-http_stub_status_module --with-http_sub_module --with-http_v2_module --with-mail --with-mail_ssl_module --with-stream --with-stream_realip_module --with-stream_ssl_module --with-stream_ssl_preread_module --with-cc-opt='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -m64 -mtune=generic -fPIC' --with-ld-opt='-Wl,-z,relro -Wl,-z,now -pie' --add-module=/usr/local/echo-nginx-module-0.61

[root@192 ~]# cd /etc/nginx/conf.d/
[root@192 conf.d]# vim echo.conf
server {
        listen 80;
        server_name     localhost;
        location /test {
                set $foo hello;
                echo "foo: $foo";
        }
}

[root@192 conf.d]# nginx -s reload
[root@192 conf.d]# curl localhost/test
foo: hello

server {
        listen 80;
        server_name     localhost;
        location /test-brace {
                set $first "hello ";
                echo "${first}world";
        }
}

[root@192 conf.d]# nginx -s reload 
[root@192 conf.d]# curl localhost/test-brace
hello world

server {
    ...
    location /bad {
        echo $foo;
    }
}

[root@192 conf.d]# nginx -s reload 
nginx: [emerg] unknown "foo" variable
nginx: configuration file /etc/nginx/nginx.conf test failed

server {
        listen 80;
        server_name     localhost;
        location /foo {
                echo "foo = [$foo]";
        }
        location /bar {
                set $foo 32;
                echo "foo = [$foo]";
        }
}

[root@192 conf.d]# curl 'http://localhost/foo'
foo = []
[root@192 conf.d]# curl 'http://localhost/bar'
foo = [32]

server {
        listen 80;
        server_name     localhost;
        location /test-uri {
                echo "uri = $uri";
                echo "request_uri = $request_uri";
        }
}

[root@localhost html]# nginx -s reload
[root@192 conf.d]# nginx -s reload 
[root@192 conf.d]# curl localhost/test-uri
uri = /test-uri
request_uri = /test-uri
[root@192 conf.d]# curl "localhost/test-uri?a=3&b=4"
uri = /test-uri
request_uri = /test-uri?a=3&b=4
[root@192 conf.d]# curl "localhost/test-uri/hello%20world?a=3&b=4"
uri = /test-uri/hello world
request_uri = /test-uri/hello%20world?a=3&b=4

server {
        listen 80;
        server_name     localhost;
        location /test-arg {
        echo "name: $arg_name";
        echo "class: $arg_class";
        }
}

[root@192 conf.d]# nginx -s reload
[root@192 conf.d]# curl localhost/test-arg
name: 
class: 

[root@192 conf.d]# curl "localhost/test-arg?name=Tom&class=3"
name: Tom
class: 3

[root@192 conf.d]# curl "localhost/test-arg?name=hello%20world&class=9"
name: hello%20world
class: 9

[root@192 conf.d]# curl "localhost/test-arg?NAME=Marry"
name: Marry
class: 
[root@192 conf.d]# curl "localhost/test-arg?Name=Jimmy&class=DSfef"
name: Jimmy
class: DSfef

# -V大寫(xiě)會(huì)顯示版本號(hào)和模塊等信息、v小寫(xiě)僅顯示版本信息
[root@localhost ~]# nginx -V

./configure –with-http_stub_status_module

server {
        listen 80;
        server_name localhost;
        location /nginx-status {
                stub_status     on;
                access_log      on;
                }
}

Active connections: 2 
server accepts handled requests
 26 26 48 
Reading: 0 Writing: 1 Waiting: 1 

Active connections:2 #當(dāng)前nginx處理請(qǐng)求的數(shù)目(活躍的連接數(shù))

server accepts handled requests
26 26 48

tengine官方說(shuō)req-status模塊默認(rèn)安裝。但是并沒(méi)有。從github引入第三方模塊解決該問(wèn)題
yum與編譯安裝的nginx擴(kuò)展模塊安裝:
[root@nginx-server ~]# yum install -y unzip
1. 安裝，先查看一下當(dāng)前編譯安裝nginx的版本
[root@localhost nginx-1.16.0]# nginx -V  
下載或者上傳一個(gè)和當(dāng)前的nginx版本一樣的nginx的tar包。
[root@nginx-server ~]# tar xzf nginx-1.16.0.tar.gz -C /usr/local/
2.下載ngx_req_status_module 模塊， 這是第三方模塊需要添加
[root@nginx-server ~]# wget https://github.com/zls0424/ngx_req_status/archive/master.zip -O ngx_req_status.zip
[root@nginx-server ~]# unzip ngx_req_status.zip
[root@nginx-server ~]# cp -r ngx_req_status-master/ /usr/local/ #與解壓的nginx在同一級(jí)目錄下
[root@nginx-server ~]# cd /usr/local/nginx-1.16.0/
[root@nginx-server nginx-1.16.0]# yum -y install pcre pcre-devel openssl openssl-devel gcc gcc-c++   zlib zlib-devel
[root@nginx-server nginx-1.16.0]# yum -y install patch.x86_64
[root@nginx-server nginx-1.16.0]# patch -p1 < ../ngx_req_status-master/write_filter-1.7.11.patch
[root@localhost nginx-1.16.0]# ./configure 添加上原來(lái)的參數(shù) --add-module=/usr/local/ngx_req_status-master
[root@localhost nginx-1.16.0]# make 
由于原先已有nginx，所以不能執(zhí)行make install,否則會(huì)覆蓋掉以前的配置文件及內(nèi)容
[root@localhost nginx-1.16.0]# mv /usr/sbin/nginx /usr/sbin/nginx_bak
[root@localhost nginx-1.16.0]# cp objs/nginx /usr/sbin/
[root@localhost nginx-1.16.0]# systemctl restart nginx 
[root@localhost nginx-1.16.0]# nginx -V   
如果發(fā)現(xiàn)編譯的配置文件有變化就成功了！
配置如下: 需要在http里面配置。
[root@localhost ~]# vim /etc/nginx/nginx.conf
req_status_zone server_name $server_name 256k;
req_status_zone server_addr $server_addr 256k;
req_status_zone server_url  $server_name$uri 256k;
req_status server_name server_addr server_url;
server {
        server_name localhost;
        location /req-status {
        req_status_show on;
        }
}

指令介紹
 req_status_zone
語(yǔ)法: req_status_zone name string size
默認(rèn)值: None
配置塊: http
定義請(qǐng)求狀態(tài)ZONE,請(qǐng)求按照string分組來(lái)排列，例如：
req_status_zone server_url  $server_name$uri 256k;
域名+uri將會(huì)形成一條數(shù)據(jù)，可以看到所有url的帶寬，流量，訪問(wèn)數(shù)

req_status
語(yǔ)法: req_status zone1[ zone2]
默認(rèn)值: None
配置塊: http, server, location
在location中啟用請(qǐng)求狀態(tài)，你可以指定更多zones。

req_status_show
語(yǔ)法: req_status_show on
默認(rèn)值: None
配置塊: location
在當(dāng)前位置啟用請(qǐng)求狀態(tài)處理程序

awk '{print $1}'  access.log|sort | uniq -c |wc -l

awk '{print $7}' access.log|wc -l

awk '{print $7}' access.log|sort | uniq -c |sort -n -k 1 -r|more

awk '{print $1}' access.log|sort | uniq -c |sort -n -k 1 -r|more

awk '{print $1}' access.log|sort | uniq -c |sort -n -k 1 -r|head -n 10