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debug note-- nginx php-fpm : Error:The page you are looking for is temporarily unavailable.，note--nginx

1.在ubuntu下安装配置nginx, mysql, php

安装步骤：

参考：https://www.digitalocean.com/community/tutorials/how-to-install-linux-nginx-mysql-php-lemp-stack-on-ubuntu-12-04#

具体摘抄如下：

About Lemp


LEMP stack is a group of open source software to get web servers up and running. The acronym stands for Linux, nginx (pronounced Engine x), MySQL, and PHP. Since the server is already running Ubuntu, the linux part is taken care of. Here is how to install the rest.


Setup


The steps in this tutorial require the user to have root privileges. You can see how to set that up in the Initial Server Setup Tutorial in steps 3 and 4.


Step One—Update Apt-Get


Throughout this tutorial we will be using apt-get as an installer for all the server programs. On May 8th, 2012, a serious php vulnerability was discovered, and it is important that we download all of the latest patched software to protect the virtual private server.


Let's do a thorough update.


sudo apt-get update


Step Two—Install MySQL


MySQL is a powerful database management system used for organizing and retrieving data


To install MySQL, open terminal and type in these commands:


sudo apt-get install mysql-server php5-mysql


During the installation, MySQL will ask you to set a root password. If you miss the chance to set the password while the program is installing, it is very easy to set the password later from within the MySQL shell.


Once you have installed MySQL, we should activate it with this command:


sudo mysql_install_db


Finish up by running the MySQL set up script:


sudo /usr/bin/mysql_secure_installation


The prompt will ask you for your current root password.


Type it in.


Enter current password for root (enter for none): 
OK, successfully used password, moving on...


Then the prompt will ask you if you want to change the root password. Go ahead and choose N and move on to the next steps.


It’s easiest just to say Yes to all the options. At the end, MySQL will reload and implement the new changes.


By default, a MySQL installation has an anonymous user, allowing anyone
to log into MySQL without having to have a user account created for
them.  This is intended only for testing, and to make the installation
go a bit smoother.  You should remove them before moving into a
production environment.

Remove anonymous users? [Y/n] y                                            
 ... Success!

Normally, root should only be allowed to connect from 'localhost'.  This
ensures that someone cannot guess at the root password from the network.

Disallow root login remotely? [Y/n] y
... Success!

By default, MySQL comes with a database named 'test' that anyone can
access.  This is also intended only for testing, and should be removed
before moving into a production environment.

Remove test database and access to it? [Y/n] y
 - Dropping test database...
 ... Success!
 - Removing privileges on test database...
 ... Success!

Reloading the privilege tables will ensure that all changes made so far
will take effect immediately.

Reload privilege tables now? [Y/n] y
 ... Success!

Cleaning up...


Once you're done with that you can finish up by installing PHP.


Step Three—Install nginx


Once MySQL is all set up, we can move on to installing nginx on the VPS.


sudo apt-get install nginx


nginx does not start on its own. To get nginx running, type:


sudo service nginx start


You can confirm that nginx has installed an your web server by directing your browser to your IP address.


You can run the following command to reveal your VPS's IP address.


ifconfig eth0 | grep inet | awk '{ print $2 }'


Step Four—Install PHP


To install PHP-FPM, open terminal and type in these commands. We will configure the details of nginx and php details in the next step:


sudo apt-get install php5-fpm


Step Five—Configure php


We need to make one small change in the php configuration.Open up php.ini:


 sudo nano /etc/php5/fpm/php.ini


Find the line, cgi.fix_pathinfo=1, and change the 1 to 0.


cgi.fix_pathinfo=0


If this number is kept as 1, the php interpreter will do its best to process the file that is as near to the requested file as possible. This is a possible security risk. If this number is set to 0, conversely, the interpreter will only process the exact file path—a much safer alternative. Save and Exit. We need to make another small change in the php5-fpm configuration.Open up www.conf:


 sudo nano /etc/php5/fpm/pool.d/www.conf


Find the line, listen = 127.0.0.1:9000, and change the 127.0.0.1:9000 to /var/run/php5-fpm.sock.


listen = /var/run/php5-fpm.sock


Save and Exit.


Restart php-fpm:


sudo service php5-fpm restart


Step Six—Configure nginx


Open up the default virtual host file.


sudo nano /etc/nginx/sites-available/default


The configuration should include the changes below (the details of the changes are under the config information):


UPDATE: Newer Ubuntu versions create a directory called 'html' instead of 'www' by default. If /usr/share/nginx/www does not exist, it's probably called html. Make sure you update your configuration appropriately.


 [...]
server {
        listen   80;
     

        root /usr/share/nginx/www;
        index index.php index.html index.htm;

        server_name example.com;

        location / {
                try_files $uri $uri/ /index.html;
        }

        error_page 404 /404.html;

        error_page 500 502 503 504 /50x.html;
        location = /50x.html {
              root /usr/share/nginx/www;
        }

        # pass the PHP scripts to FastCGI server listening on the php-fpm socket
        location ~ \.php$ {
                try_files $uri =404;
                fastcgi_pass unix:/var/run/php5-fpm.sock;
                fastcgi_index index.php;
                fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
                include fastcgi_params;
                
        }

}
[...]


Here are the details of the changes:


    

  • Add index.php to the index line.
    • 

  • Change the server_name from local host to your domain name or IP address (replace the example.com in the configuration)
    • 

  • Change the correct lines in “location ~ \.php$ {“ section
    • 



Save and Exit


Step Seven—Create a php Info Page


We can quickly see all of the details of the new php configuration.


To set this up, first create a new file:


sudo nano /usr/share/nginx/www/info.php


Add in the following line:




Then Save and Exit.


Restart nginx


sudo service nginx restart


You can see the nginx and php-fpm configuration details by visiting http://youripaddress/info.php


Your LEMP stack is now set up and configured on your virtual private server.

2. 按照上述文章介绍的安装步骤安装之后，通过浏览器访问php文件得到502页面：The page you are looking for is temporarily unavailable.

检查nginx的error.log文件: 发现错误：connect to php5-fpm.sock failed (Permission denied)，

检查php5-fpm.sock的权限得到other的权限为：---

解决方法：

参考：http://stackoverflow.com/questions/23443398/nginx-error-connect-to-php5-fpm-sock-failed-13-permission-denied

具体摘抄如下：

     Note: if your webserver runs as as user other than www-data, you will need to update the www.conf file accordingly

我的freebsd系统下Nginx PHP提示出现The page you are looking for is temporarily unavailable错误?

1.先检查PHP FastCGI进程数是否够用：
netstat -anpo|grep “php-cgi”|wc -l
如果输出为0的话，则表示FastCGI 进程数够大，

2.此时则修改scgi_params文件，找到：

scgi_param SCGI 1;

把它改为：

scgi_param SCGI 5;

3.PHP程序如果的执行时间超过了Nginx的等待时间，就可适当地增加nginx.conf配置文件中FastCGI的timeout时间，例如：
http
{
……
fastcgi_connect_timeout 300;
fastcgi_send_timeout 300;
fastcgi_read_timeout 300;
fastcgi_buffer_size 64k
fastcgi_buffers 4 64k
……
}

4.重启FastCGI

先杀掉进程：# pkill -9 php-cgi
然后重启：# /usr/local/bin/spawn-fcgi -a 127.0.0.1 -p 9000 -u www -g www -f /usr/local/bin/php-cgi

5.重启Nginx

先杀掉进程:# killall -9 nginx
然后重启：# /usr/local/sbin/nginx

其它可能情况：

1)访问任意PHP文件，出现

The page you are looking for is temporarily unavailable.
Please try again later.

2)访问html页面，正常

原因:
nginx不能正常通过FastCGI结果访问PHP

1)如果是以tcp socket形式，可能是进程用户权限设置得不对

spawn-fcgi -a 127.0.0.1 -p 9000 -C 2 -u www-data -g www-data -f /usr/bin/php-cgi

可以改为 www-data 或者 nobody, 重启php-cgi进程

2)如果是unix socket,可能 socket文件权限没有写入能力

srwxrwxr-x 1 gavin gavin 0 11-12 10:18 php-fcgi.sock

为其他用户添加写入能力

chmod o+w php-fcgi.sock
参考资料：hi.baidu.com/...7.html...余下全文>>
 

nginx php fpm 怎显示错误日志

要想让php-fpm显示错误日志，首先需要配置php-fpm。
在php-fpm的配置文件中（一般位于php安装目录下的etc/php-fpm.conf）配置php错误日志的文件路径。
; Error log file; If it's set to "syslog", log is sent to syslogd instead of being written; in a local file.; Note: the default prefix is /home/wangwei/php/var; Default Value: log/php-fpm.log;error_log = log/php-fpm.log如上是我的php-fpm.conf文件中配置错误日志的地方。把error_log = log/php-fpm.log之前的;去掉，然后修改为：
; Error log file; If it's set to "syslog", log is sent to syslogd instead of being written; in a local file.; Note: the default prefix is /home/wangwei/php/var; Default Value: log/php-fpm.logerror_log = /home/work/log/php-fpm.log.wf修改之后，保存配置，然后重启php-fpm就可以啦。
注意如果用相对路径的话，的路径的前缀是基于php安装目录的var目录的。

 

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