etrace跟踪Nginx代码+ FASTCGI
http://blog.csdn.net/jianqiangchen/article/details/29175285
http://blog.csdn.net/jianqiangchen/article/details/29201415
http://blog.csdn.net/allenlinrui/article/details/19419721
nginx安装：
[root@monitor ~]# pwd /root wget http://nginx.org/download/nginx-1.2.9.tar.gz tar -zxvf nginx-1.2.9.tar.gz
[root@slave1 nginx-1.2.9]# pwd //configure /root/nginx-1.2.9 [root@slave1 nginx-1.2.9]# ll total 572 drwxr-xr-x 6 1001 1001 4096 Jun 9 13:05 auto -rw-r--r-- 1 1001 1001 216470 May 13 2013 CHANGES -rw-r--r-- 1 1001 1001 330113 May 13 2013 CHANGES.ru drwxr-xr-x 2 1001 1001 4096 Jun 9 13:05 conf -rwxr-xr-x 1 1001 1001 2369 May 13 2013 configure drwxr-xr-x 3 1001 1001 4096 Jun 9 13:05 contrib drwxr-xr-x 2 1001 1001 4096 Jun 9 13:05 html -rw-r--r-- 1 1001 1001 1397 May 13 2013 LICENSE drwxr-xr-x 2 1001 1001 4096 Jun 9 13:05 man -rw-r--r-- 1 1001 1001 49 May 13 2013 README drwxr-xr-x 8 1001 1001 4096 Jun 9 13:05 src
[root@slave1 nginx-1.2.9]# cd src //源代码目录 [root@slave1 src]# ll total 24 drwxr-xr-x 2 1001 1001 4096 Jun 9 13:05 core drwxr-xr-x 3 1001 1001 4096 Jun 9 13:05 event drwxr-xr-x 3 1001 1001 4096 Jun 9 13:05 http drwxr-xr-x 2 1001 1001 4096 Jun 9 13:05 mail drwxr-xr-x 2 1001 1001 4096 Jun 9 13:05 misc drwxr-xr-x 3 1001 1001 4096 May 13 2013 os [root@slave1 src]# pwd /root/nginx-1.2.9/src
Nginx的configure
1 ./configure -with-debug --with-cc-opt='-g -O0 -finstrument-functions'
[root@slave1 nginx-1.2.9]# ll //产生objs目录 在objs产生真正Makefile文件 total 580 drwxr-xr-x 6 1001 1001 4096 Jun 9 13:05 auto -rw-r--r-- 1 1001 1001 216470 May 13 2013 CHANGES -rw-r--r-- 1 1001 1001 330113 May 13 2013 CHANGES.ru drwxr-xr-x 2 1001 1001 4096 Jun 9 13:05 conf -rwxr-xr-x 1 1001 1001 2369 May 13 2013 configure drwxr-xr-x 3 1001 1001 4096 Jun 9 13:05 contrib drwxr-xr-x 2 1001 1001 4096 Jun 9 13:05 html -rw-r--r-- 1 1001 1001 1397 May 13 2013 LICENSE -rw-r--r-- 1 root root 46 Jun 9 13:11 Makefile drwxr-xr-x 2 1001 1001 4096 Jun 9 13:05 man drwxr-xr-x 2 root root 4096 Jun 9 13:11 objs -rw-r--r-- 1 1001 1001 49 May 13 2013 README drwxr-xr-x 8 1001 1001 4096 Jun 9 13:05 src
2. 下载etrace
[root@slave1 ~]# pwd /root
[root@slave1 ~]git clone https://github.com/elcritch/etrace.git
3. 将etrace代码加入Ngnix
将ptrace.c拷贝至Nginx源码core目录下.
core目录：
[root@slave1 core]# pwd
/root/nginx-1.2.9/src/core
ptrace.c目录：
[root@slave1 src]# pwd /root/etrace/src [root@slave1 src]# ll total 20 -rwxr-xr-x 1 root root 3183 Jun 9 13:16 etrace -rwxr-xr-x 1 root root 4134 Jun 9 13:16 etrace.pl -rw-r--r-- 1 root root 5054 Jun 9 13:16 ptrace.c
cp /root/etrace/src/ptreace.c /root/nginx-1.2.9/src/core/
cp /root/etrace/src/etrace /sbin/
cp /root/etrace/src/ptrace.pl /sbin/
保证NGINX 与 etrace与etrace.pl在一个目录，目的是读取nginx产生的TRACE文件，然后转换为函数树
修改 /root/nginx-1.2.9/objs/Makefile
objs/nginx: objs/src/core/nginx.o \ objs/src/core/ptrace.o \ $(LINK) -o objs/nginx \ objs/src/core/nginx.o \ objs/src/core/ptrace.o \ //要加入的值 objs/src/core/nginx.o: $(CORE_DEPS) \ src/core/nginx.c $(CC) -c $(CFLAGS) $(CORE_INCS) \ -o objs/src/core/nginx.o \ src/core/nginx.c objs/src/core/ptrace.o: $(CORE_DEPS) \ //要加入值 src/core/ptrace.c
$(CC) -c $(CFLAGS) $(CORE_INCS) \ -o objs/src/core/ptrace.o \
src/core/ptrace.c
注意:拷贝后注意每个大项的下面,要重新以TAB健开头,空格不等于TAB
3.make
4.make install
/usr/local/nginx /usr/local/nginx/sbin /usr/local/nginx/sbin/nginx /usr/local/nginx/html /usr/local/nginx/html/index.html /usr/local/nginx/html/50x.html /usr/local/nginx/conf /usr/local/nginx/conf/fastcgi_params.default /usr/local/nginx/conf/mime.types /usr/local/nginx/conf/scgi_params.default /usr/local/nginx/conf/scgi_params /usr/local/nginx/conf/nginx.conf /usr/local/nginx/conf/fastcgi.conf /usr/local/nginx/conf/koi-win /usr/local/nginx/conf/koi-utf /usr/local/nginx/conf/nginx.conf.default /usr/local/nginx/conf/mime.types.default /usr/local/nginx/conf/uwsgi_params.default /usr/local/nginx/conf/fastcgi_params /usr/local/nginx/conf/uwsgi_params /usr/local/nginx/conf/win-utf /usr/local/nginx/conf/fastcgi.conf.default /usr/local/nginx/logs
默认目录结构:
主目录：/usr/local/nginx/
配置目录：/usr/local/nginx/conf/
root目录：/usr/local/nginx/html/
可执行文件路径：/usr/local/nginx/sbin/
cp /usr/local/nginx/sbin/nginx /sbin/
5.启动 - 默认和特殊
/usr/local/nginx/sbin/nginx （默认启动方式）
/usr/local/nginx/sbin/nginx -c /usr/local/nginx/conf/nginx.conf （指定配置文件启动）
6.
vi /usr/local/nginx/conf/nginx.conf 加入
daemon off;
master_process off;
7.开3个窗口
窗口1
cd /sbin
touch TRACE
etrace nginx 或者 etrace nginx >log
窗口2
cd /sbin
./nginx
窗口三
curl 127.0.0.1
研究一下CGI： http://www.cnblogs.com/skynet/p/4173450.html root@monitor ~]# cat /usr/local/nginx/conf/nginx.conf worker_processes 8; root 16125 1 0 14:06 ? 00:00:00 nginx: master process ./nginx nobody 16126 16125 0 14:06 ? 00:00:00 nginx: worker process nobody 16127 16125 0 14:06 ? 00:00:00 nginx: worker process nobody 16128 16125 0 14:06 ? 00:00:00 nginx: worker process nobody 16129 16125 0 14:06 ? 00:00:00 nginx: worker process nobody 16130 16125 0 14:06 ? 00:00:00 nginx: worker process nobody 16131 16125 0 14:06 ? 00:00:00 nginx: worker process nobody 16132 16125 0 14:06 ? 00:00:00 nginx: worker process nobody 16133 16125 0 14:06 ? 00:00:00 nginx: worker process
spawn_fastcgi的安装、部署与配置
wget https://github.com/lighttpd/spawn-fcgi/archive/v1.6.3.tar.gz
[root@monitor spawn-fcgi-1.6.3]# pwd
/root/spawn-fcgi-1.6.3
[root@monitor spawn-fcgi-1.6.3]# ./autogen.sh
[root@monitor spawn-fcgi-1.6.3]# ./configure
[root@monitor spawn-fcgi-1.6.3]# make
编译好以后，将可执行文件移动到nginx的sbin目录下
cp ./src/spawn-fcgi /usr/local/nginx/sbin/ //（cp到nginx的安装目录下）
安装fastcgi开发包:
[root@monitor ~]# wget http://down1.chinaunix.net/distfiles/fcgi-2.4.0.tar.gz
[root@monitor ~]# tar -zxvf fcgi-2.4.0.tar.gz
[root@monitor fcgi-2.4.0]# pwd
/root/fcgi-2.4.0
1./configure
2.make
3.make install //安装了什么
/usr/bin/install -c -m 644 fastcgi.h /usr/local/include/fastcgi.h
/usr/bin/install -c -m 644 fcgi_stdio.h /usr/local/include/fcgi_stdio.h
/usr/bin/install -c -m 644 fcgiapp.h /usr/local/include/fcgiapp.h
/usr/bin/install -c -m 644 fcgimisc.h /usr/local/include/fcgimisc.h
/usr/bin/install -c -m 644 fcgio.h /usr/local/include/fcgio.h
/usr/bin/install -c -m 644 fcgios.h /usr/local/include/fcgios.h
/usr/bin/install -c -m 644 fcgi_config.h /usr/local/include/fcgi_config.h
安装fastcgi开发包，报以下错误： fcgio.cpp: In destructor 'virtual fcgi_streambuf::~fcgi_streambuf()': fcgio.cpp:50: error: 'EOF' was not declared in this scope fcgio.cpp: In member function 'virtual int fcgi_streambuf::overflow(int)': fcgio.cpp:70: error: 'EOF' was not declared in this scope fcgio.cpp:75: error: 'EOF' was not declared in this scope fcgio.cpp: In member function 'virtual int fcgi_streambuf::sync()': fcgio.cpp:86: error: 'EOF' was not declared in this scope fcgio.cpp:87: error: 'EOF' was not declared in this scope fcgio.cpp: In member function 'virtual int fcgi_streambuf::underflow()': fcgio.cpp:113: error: 'EOF' was not declared in this scope make[2]: *** [fcgio.lo] Error 1 make[2]: Leaving directory `/root/downloads/fcgi-2.4.1-SNAP-0910052249/libfcgi' make[1]: *** [all-recursive] Error 1 make[1]: Leaving directory `/root/downloads/fcgi-2.4.1-SNAP-0910052249' make: *** [all] Error 2 解决办法： 在/include/fcgio.h文件中加上 #include <stdio.h>，然后再编译安装就通过了。
CGI程序:
[root@monitor ~]# vi demo.cc
#include <fcgi_stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <unistd.h>
int main() {
int count = 0;
while (FCGI_Accept() >= 0) {
printf("Content-type: text/html\r\n"
"\r\n"
""
"FastCGI Hello!"
"Request number %d running on host%s "
"Process ID: %d\n", ++count, getenv("SERVER_NAME"), getpid());
}
return 0;
}
[root@monitor ~]# ./demo
./demo: error while loading shared libraries: libfcgi.so.0: cannot open shared object file: No such file or directory
解决：
1.cp /usr/local/lib/libfcgi.so.0 /usr/lib
在/etc/ld.so.conf中加入
include /usr/lib
2./sbin/ldconfig -v
[root@monitor ~]# ldd demo
linux-vdso.so.1 => (0x00007fff0a4f1000)
libfcgi.so.0 => /usr/lib/libfcgi.so.0 (0x00007f560e1cf000)
libstdc++.so.6 => /usr/lib64/libstdc++.so.6 (0x00007f560dec9000)
libm.so.6 => /lib64/libm.so.6 (0x0000003c4fc00000)
libgcc_s.so.1 => /lib64/libgcc_s.so.1 (0x00007f560dcb2000)
libc.so.6 => /lib64/libc.so.6 (0x0000003c4ec00000)
libnsl.so.1 => /lib64/libnsl.so.1 (0x0000003c51400000)
/lib64/ld-linux-x86-64.so.2 (0x0000003c4e400000)
mkdir -p /usr/local/nginx/cgibin/
cp /root/deme /usr/local/nginx/cgibin/demo
指定spawn-fcgi与 demo 这个CGI关联
[root@monitor cgibin]# /usr/local/nginx/sbin/spawn-fcgi -a 127.0.0.1 -p 8088
spawn-fcgi: no FastCGI application given
[root@monitor cgibin]# /usr/local/nginx/sbin/spawn-fcgi -a 127.0.0.1 -p 8088 -f /usr/local/nginx/cgibin/demo
spawn-fcgi: child spawned successfully: PID: 23692
参数含义如下：
-f <fcgiapp> 指定调用FastCGI的进程的执行程序位置，根据系统上所装的情况具体设置。
-a <addr> 绑定到地址addr。
-p <port> 绑定到端口port。
-s <path> 绑定到unix socket的路径path。
-C <childs> 指定产生的FastCGI的进程数，默认为5。（仅用于PHP）
-P <path> 指定产生的进程的PID文件路径。
-u和-g FastCGI使用什么身份（-u 用户 -g 用户组）运行，CentOS下可以使用apache用户，其他的根据情况配置，如nobody、www-data等。
浏览器上：
http://120.24.160.93/demo.cgi (.cgi不能省)
FastCGI Hello!Request number 4 running on host Process ID: 23692
服务器上：
[root@monitor cgibin]# ps -ef|grep demo
root 23692 1 0 15:46 ? 00:00:00 /usr/local/nginx/cgibin/demo
demo 这个CGI一致在运行
还可以监听其他端口:
[root@monitor cgibin]# /usr/local/nginx/sbin/spawn-fcgi -a 127.0.0.1 -p 9000 -f /usr/local/nginx/cgibin/demo
spawn-fcgi: child spawned successfully: PID: 23700
[root@monitor cgibin]# /usr/local/nginx/sbin/spawn-fcgi -a 127.0.0.1 -p 9001 -f /usr/local/nginx/cgibin/demo
spawn-fcgi: child spawned successfully: PID: 23702
[root@monitor cgibin]# /usr/local/nginx/sbin/spawn-fcgi -a 127.0.0.1 -p 9002 -f /usr/local/nginx/cgibin/demo
spawn-fcgi: child spawned successfully: PID: 23704
[root@monitor cgibin]# /usr/local/nginx/sbin/spawn-fcgi -a 127.0.0.1 -p 9003 -f /usr/local/nginx/cgibin/demo
spawn-fcgi: child spawned successfully: PID: 23706
ctive Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address Foreign Address State
tcp 0 0 127.0.0.1:9003 0.0.0.0:* LISTEN
tcp 0 0 127.0.0.1:8088 0.0.0.0:* LISTEN
tcp 0 0 127.0.0.1:9000 0.0.0.0:* LISTEN
tcp 0 0 127.0.0.1:9001 0.0.0.0:* LISTEN
tcp 0 0 127.0.0.1:9002 0.0.0.0:* LISTEN
[root@monitor cgibin]# ps -ef|grep demo
root 23692 1 0 15:46 ? 00:00:00 /usr/local/nginx/cgibin/demo
root 23700 1 0 15:57 ? 00:00:00 /usr/local/nginx/cgibin/demo
root 23702 1 0 15:58 ? 00:00:00 /usr/local/nginx/cgibin/demo
root 23704 1 0 15:58 ? 00:00:00 /usr/local/nginx/cgibin/demo
root 23706 1 0 15:59 ? 00:00:00 /usr/local/nginx/cgibin/demo
重启nginx或者重新加载配置文件
重新加载配置文件
1.kill -HUP [pid]
2.重启nginx
service nginx restart
3.killall nginx ./nginx
kill -HUP 是让进程挂起，睡眠;
kill -9 六亲不认的杀掉
kill -15 正常的退出进程
killall命令用于杀死指定名字的进程（kill processes by name）
1. yum install php
PHP-CGI是PHP自带的FastCGI管理器
php-cgi -b 127.0.0.1:9000
php-cgi变更php.ini配置后需重启php-cgi才能让新的php-ini生效，不可以平滑重启
直接杀死php-cgi进程,php就不能运行了。(PHP-FPM和Spawn-FCGI就没有这个问题,守护进程会平滑从新生成新的子进程。）
2.Spawn-FCGI，PHP-FPM 都是fastcgi管理器
yum install php-fpm
PHP-FPM是一个PHP FastCGI管理器 专门服务PHP
Spawn-FCGI是一个通用的FastCGI管理服务器 通用的
PHP-FPM、Spawn-FCGI都是守护php-cgi的进程管理器
php-fpm,Spawn-FCGI的管理对象是php-cgi
fastcgi是协议
php-cgi只是解释PHP脚本的程序
[root@monitor ~]# /usr/sbin/php-fpm
[09-Jun-2016 17:59:33] NOTICE: fpm is running, pid 23943
[09-Jun-2016 17:59:33] NOTICE: ready to handle connections
[root@monitor ~]# ps -ef|grep php-fpm
root 23943 23848 0 17:59 pts/0 00:00:00 php-fpm: master process (/etc/php-fpm.conf)
apache 23944 23943 0 17:59 pts/0 00:00:00 php-fpm: pool www
apache 23945 23943 0 17:59 pts/0 00:00:00 php-fpm: pool www
apache 23946 23943 0 17:59 pts/0 00:00:00 php-fpm: pool www
apache 23947 23943 0 17:59 pts/0 00:00:00 php-fpm: pool www
apache 23948 23943 0 17:59 pts/0 00:00:00 php-fpm: pool www
root 23964 23900 0 18:01 pts/1 00:00:00 grep php-fpm
[root@monitor ~]# kill -9 23943
[root@monitor ~]# ps -ef|grep php-fpm
apache 23944 1 0 17:59 pts/0 00:00:00 php-fpm: pool www
apache 23945 1 0 17:59 pts/0 00:00:00 php-fpm: pool www
apache 23946 1 0 17:59 pts/0 00:00:00 php-fpm: pool www
apache 23947 1 0 17:59 pts/0 00:00:00 php-fpm: pool www
apache 23968 1 0 18:02 pts/0 00:00:00 php-fpm: pool www
root 23970 23900 0 18:02 pts/1 00:00:00 ps -ef
spawn-fcgi管理php-cgi:
[root@monitor ~]# /usr/local/nginx/sbin/spawn-fcgi -a 127.0.0.1 -p 2000 -C 5 -f /usr/bin/php-cgi
[root@monitor ~]# ps -ef|grep php-cgi
root 24007 1 0 18:19 ? 00:00:00 /usr/bin/php-cgi
root 24008 24007 0 18:19 ? 00:00:00 /usr/bin/php-cgi
root 24009 24007 0 18:19 ? 00:00:00 /usr/bin/php-cgi
root 24010 24007 0 18:19 ? 00:00:00 /usr/bin/php-cgi
root 24011 24007 0 18:19 ? 00:00:00 /usr/bin/php-cgi
root 24012 24007 0 18:19 ? 00:00:00 /usr/bin/php-cgi
root 24017 23900 0 18:22 pts/1 00:00:00 grep php-cgi
[root@monitor ~]# kill -9 24008
[root@monitor ~]# ps -ef|grep php-cgi
root 24007 1 0 18:19 ? 00:00:00 /usr/bin/php-cgi
root 24009 24007 0 18:19 ? 00:00:00 /usr/bin/php-cgi
root 24010 24007 0 18:19 ? 00:00:00 /usr/bin/php-cgi
root 24011 24007 0 18:19 ? 00:00:00 /usr/bin/php-cgi
root 24012 24007 0 18:19 ? 00:00:00 /usr/bin/php-cgi
root 24018 24007 0 18:23 ? 00:00:00 /usr/bin/php-cgi
root 24020 23900 0 18:23 pts/1 00:00:00 grep php-cgi
[root@monitor ~]# /usr/local/nginx/sbin/spawn-fcgi -a 127.0.0.1 -u nobody -g nobody -p 2010 -C 5 -f /usr/bin/php-cgi
ps -ef|grep nobody
nobody 24023 1 0 18:26 ? 00:00:00 /usr/bin/php-cgi
nobody 24024 24023 0 18:26 ? 00:00:00 /usr/bin/php-cgi
nobody 24025 24023 0 18:26 ? 00:00:00 /usr/bin/php-cgi
nobody 24026 24023 0 18:26 ? 00:00:00 /usr/bin/php-cgi
nobody 24027 24023 0 18:26 ? 00:00:00 /usr/bin/php-cgi
nobody 24028 24023 0 18:26 ? 00:00:00 /usr/bin/php-cgi
