Just one script to install and optimize Nginx,mysql and php5 ,php-fpm for 512Mb VPS/Cloud instance.
Running website on virtual private server ( I am using DigitalOcean VPS, 5$ per month) or on amazon ec2 instance is cool. But if you are doing it first time ,setting up and optimizing VPS is tricky task to do.You will required to install all servers and configure it yourself. With default settings, MySQL and apache will not work together on same 512MB VPS. Under heavy load MySQL crashes and your site will be down. And, that's why ,I wrote a script which install all required servers and fine-tune all the servers. I chose NGINX web server over apache because of small footprint and less memory consumption.
Git Repository
https://github.com/junedmunshi/SampleCode/blob/master/web/vpsSetup/
Running website on virtual private server ( I am using DigitalOcean VPS, 5$ per month) or on amazon ec2 instance is cool. But if you are doing it first time ,setting up and optimizing VPS is tricky task to do.You will required to install all servers and configure it yourself. With default settings, MySQL and apache will not work together on same 512MB VPS. Under heavy load MySQL crashes and your site will be down. And, that's why ,I wrote a script which install all required servers and fine-tune all the servers. I chose NGINX web server over apache because of small footprint and less memory consumption.
Git Repository
https://github.com/junedmunshi/SampleCode/blob/master/web/vpsSetup/
Download
OS
Tested on vanilla ubuntu 12.04 .
Install and setup
chmod +x vpsSetup.sh
chmod +x start.sh
chmod +x stop.sh
sudo ./vpsSetup.sh
To start server
sudo ./start.sh
To stop server
sudo ./stop.sh
But before you run the script
Before you blindly run the script, you should look at configuration files for Nginx and modify it according to your need. Everything should work off the shelf except modifying few parameters in ./nginx/default . Read Nginx section below.
Moreover, you can also change configuration for mysql and php if given configuration file does not suit to your need.Read Mysql and Php5 section below.
What will the script do?
It will,
1) Add required debian repository
2) Install all required packages ( nginx mysql-server mysql-client memcached php5 php-apc php-auth php-net-smtp php-net-socket php-pear php5-curl php5-gd php5-mcrypt php5-mysql php5-fpm php5-memcached php5-tidy vsftpd )
3) Take backup of original mysql configuration file. ( /etc/mysql/my.cnf -> /etc/mysql/my.cnf.org)
4) Optimise mysql by patching configuration file from ./mysql/my.cnf to /etc/mysql/my.cnf
5) Apply same step as 3 and 5 for nginx and php5
Files Detail
- vpsSetup.sh : Installation script
- mysql/my.cnf : MySQL server configuration file tuned for 512Mb server running mysql and nginx
- nginx/nginx.conf : Nginx server configuration file tuned for 512Mb server running mysql and nginx
- nginx/default : Configuration file for your web application.It will patched to /etc/nginx/sites-available .
- php5/fmp/php.ini : See the php section below
- php5/fmp/php-fpm.conf : See the php section below
- php5/fpm/pool.d/www.conf : Tuned for 512Mb server.
If services do not start after applying optimal settings
- If Nginx does not start , it may be possible that there is something wrong with either /etc/nginx/ngnix.conf or site-available/default.
Run sudo service nginx start and look for error. - If MySQL does not start , please check MySQL troubleshoot guide.http://junedmunshiblog.blogspot.in/2013/05/troubleshooting-mysql.html
Nginx
1)nginx/default
It is your web application configuration file. Current settings are configured for php, fast cgi and cakephp .
Things to check before you deploy:
port
servername : your domain name
root : path to your website code
access_log and error_log : very useful for debugging your website code (not nginx)
location : control behaviour for specific locations such "/" or "*.js,*.css,*.jpg (any assests)"
Note:
1) Following line is not required if you are not using cakephp. Following line ensure that images,css etc. will load properly without generating "path not found " error from theme/plugin.
try_files $uri $uri/ /../plugins/$1/webroot/$2/$3 /../View/Themed/$2/webroot/$3/$4 ;
2) You may want to turn of access_log and log_not_found for images,xml etc. files once your site functions properly.
2)ngnix.conf
Blindly copied from http://www.axelsegebrecht.com/how-to/install-nginx-apc-varnish-wordpress-and-w3-cache-128mb-vps/#Configuring_nginx
MySQL
my.cnf
1 You may consider further tuning following parameters under '[mysqld]' section if current settings are not best fit for you.
key_buffer = 16K (Default is 16M)
max_allowed_packet = 1M (Default is 16M)
thread_stack = 64K (Default is 192K)
thread_cache_size = 4 (Default is 8)
2 Innodb
Disable if not needed.Uncomment #skip-innodb
2 Fine tune if you are using it.
innodb_buffer_pool_size = 16M (Default is 128M)
innodb_additional_mem_pool_size = 2M
PHP
1) ./php5/fpm/php.ini
The only difference between original and patch file is as below.
;cgi.fix_pathinfo=1 -> cgi.fix_pathinfo=0
2) php5/fpm/php-fpm.conf
Blindly copied from http://www.axelsegebrecht.com/how-to/install-nginx-apc-varnish-wordpress-and-w3-cache-128mb-vps/#Configuring_PHP5-FPM
3) php5/fpm/pool.d/www.conf
php_admin_value[memory_limit] = You can increase if you have more RAM
php_value[upload_max_filesize] = Change it otherwise leave it if you don't care
php_value[max_execution_time] = Change it otherwise leave it if you don't care
user = www-data
group = www-data 
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