The Perfect Server - CentOS 6.3 x86_64 (nginx, Dovecot, ISPConfig 3) - Page 4
11 Install Dovecot
Dovecot can be installed as follows:
yum install dovecot dovecot-mysql
Now create the system startup links and start Dovecot:
chkconfig --levels 235 dovecot on
12 Install Postfix
Postfix can be installed as follows:
yum install postfix
Then turn off Sendmail and start Postfix:
chkconfig --levels 235 sendmail off
chkconfig --levels 235 postfix on
13 Install Getmail
Getmail can be installed as follows:
yum install getmail
14 Install Amavisd-new, SpamAssassin, And ClamAV
To install amavisd-new, spamassassin and clamav, run the following command:
yum install amavisd-new spamassassin clamav clamd unzip bzip2 unrar perl-DBD-mysql
Then we start freshclam, amavisd, and clamd.amavisd:
chkconfig --levels 235 amavisd on
chkconfig --del clamd
chkconfig --levels 235 clamd.amavisd on
15 Install Nginx, PHP5 (PHP-FPM), And Fcgiwrap
Nginx is available as a package for CentOS 6.3 (from EPEL) which we can install as follows:
yum install nginx
If Apache2 is already installed on the system, stop it now...
... and remove Apache's system startup links:
chkconfig --del httpd
Then we create the system startup links for nginx and start it:
chkconfig --levels 235 nginx on
(If both Apache2 and nginx are installed, the ISPConfig 3 installer will ask you which one you want to use - answer nginx in this case. If only one of these both is installed, ISPConfig will do the necessary configuration automatically.)
We can make PHP5 work in nginx through PHP-FPM (PHP-FPM (FastCGI Process Manager) is an alternative PHP FastCGI implementation with some additional features useful for sites of any size, especially busier sites). We can install php-fpm together with php-cli and some PHP5 modules like php-mysql which you need if you want to use MySQL from your PHP scripts as follows:
yum install php-fpm php-cli php-mysql php-gd php-imap php-ldap php-odbc php-pear php-xml php-xmlrpc php-pecl-apc php-magickwand php-magpierss php-mbstring php-mcrypt php-mssql php-shout php-snmp php-soap php-tidy
Next we open /etc/php.ini...
... and change the error reporting (so that notices aren't shown any longer):
[...] ;error_reporting = E_ALL & ~E_DEPRECATED error_reporting = E_ALL & ~E_NOTICE [...]
Also set cgi.fix_pathinfo=0:
[...] ; cgi.fix_pathinfo provides *real* PATH_INFO/PATH_TRANSLATED support for CGI. PHP's ; previous behaviour was to set PATH_TRANSLATED to SCRIPT_FILENAME, and to not grok ; what PATH_INFO is. For more information on PATH_INFO, see the cgi specs. Setting ; this to 1 will cause PHP CGI to fix its paths to conform to the spec. A setting ; of zero causes PHP to behave as before. Default is 1. You should fix your scripts ; to use SCRIPT_FILENAME rather than PATH_TRANSLATED. ; http://www.php.net/manual/en/ini.core.php#ini.cgi.fix-pathinfo cgi.fix_pathinfo=0 [...]
(Please read http://wiki.nginx.org/Pitfalls to find out why you should do this.)
In addition to that, in order to avoid errors like
[08-Aug-2011 18:07:08] PHP Warning: phpinfo(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Berlin' for 'CEST/2.0/DST' instead in /usr/share/nginx/html/info.php on line 2
... in /var/log/php-fpm/www-error.log when you call a PHP script in your browser, you should set date.timezone in /etc/php.ini:
[...] [Date] ; Defines the default timezone used by the date functions ; http://www.php.net/manual/en/datetime.configuration.php#ini.date.timezone date.timezone = "Europe/Berlin" [...]
You can find out the correct timezone for your system by running:
[[email protected] tmp]# cat /etc/sysconfig/clock
[[email protected] tmp]#
Next create the system startup links for php-fpm and start it:
chkconfig --levels 235 php-fpm on
PHP-FPM is a daemon process (with the init script /etc/init.d/php-fpm) that runs a FastCGI server on port 9000.
To get CGI support in nginx, we install Fcgiwrap.
Fcgiwrap is a CGI wrapper that should work also for complex CGI scripts and can be used for shared hosting environments because it allows each vhost to use its own cgi-bin directory.
As there's no fcgiwrap package for CentOS 6.3, we must build it ourselves. First we install some prerequisites:
yum install fcgi-devel
Now we can build fcgiwrap as follows:
git clone git://github.com/gnosek/fcgiwrap.git
This installs fcgiwrap to /usr/local/sbin/fcgiwrap.
Next we install the spawn-fcgi package which allows us to run fcgiwrap as a daemon:
yum install spawn-fcgi
... and modify the file as follows:
# You must set some working options before the "spawn-fcgi" service will work. # If SOCKET points to a file, then this file is cleaned up by the init script. # # See spawn-fcgi(1) for all possible options. # # Example : #SOCKET=/var/run/php-fcgi.sock #OPTIONS="-u apache -g apache -s $SOCKET -S -M 0600 -C 32 -F 1 -P /var/run/spawn-fcgi.pid -- /usr/bin/php-cgi" FCGI_SOCKET=/var/run/fcgiwrap.socket FCGI_PROGRAM=/usr/local/sbin/fcgiwrap FCGI_USER=apache FCGI_GROUP=apache FCGI_EXTRA_OPTIONS="-M 0770" OPTIONS="-u $FCGI_USER -g $FCGI_GROUP -s $FCGI_SOCKET -S $FCGI_EXTRA_OPTIONS -F 1 -P /var/run/spawn-fcgi.pid -- $FCGI_PROGRAM"
Now add the user nginx to the group apache:
usermod -a -G apache nginx
Create the system startup links for spawn-fcgi...
chkconfig --levels 235 spawn-fcgi on
... and start it as follows:
You should now find the fcgiwrap socket in /var/run/fcgiwrap.socket, owned by the user and group apache (some scripts, e.g. Mailman, expect to be run by the user/group apache, that's why we don't run spawn-fcgi as user/group nginx, but instead add nginx to the apache group).