Linux

Say you have your Drupal's .htaccess set "To redirect all users to access the site WITH the 'www.' prefix", and you added a sub-domain, and it came out looking something like http://www.sub.domain.com. So, most people will NOT want the "www" added to the url in this case. So what do you do? Easy.

Use this instead:


# To redirect all users to access the site WITH the 'www.' prefix,
# (http://example.com/... will be redirected to http://www.example.com/...)
# uncomment the following:
RewriteCond %{HTTP_HOST} !^www\. [NC]
RewriteCond %{HTTP_HOST} !^(subdomain1|subdomain2|subdomain3)\. [NC]
RewriteRule ^ http://www.%{HTTP_HOST}%{REQUEST_URI} [L,R=301]


So what changed? We simply added this line:

After you successfully install memcached and pecl/memcached (memcached PHP support), you will next want take full advantage of it by enabling native support for memcached in magento.

NOTE: you must have memcached and pecl/memcached already installed. Otherwise your Magento installation will break if you try following this guide.

Ok... now that the warning is out the way. Here's how we do it...

Edit your local.xml


vi ./app/etc/local.xml


Add the following between

A how-to on installing memcached with pecl/memcached on Linux.

UPDATE: See below, there's an easier way to do this. Plus DirectAdmin's way doesn't seem to be working through the 'Custom HTTPD Configurations' way.... So, just use the way listed below. It's much easier.

*** OLD WAY / start ***
I work with Drupal's Domain Access module a lot. However, if you're using DirectAdmin as your hosting control panel, then making sub-domains will not work with the default setup. DirectAdmin puts the sub-domain into a separate directory, and in order for Domain Access to work with sub-domains on DirectAdmin, this needs to be set as the same directory/path as the top domain.

A simple work around is to login to DirectAdmin as administrator, and go into "Custom HTTPD Configurations".

Here you will paste the following code:

UPDATE: Current instructions located HERE.
Please ignore the outdated below.

So, you're worried about accidentally wiping out your entire system or important directory by doing something like rm -rf / or rm -rf *

with safe-rm , it won't allow you to do that, you'll get something like:


$ rm -rf /
Skipping /


Here's how to install:

if you try running the following:

and get this error

$PHP_PREFIX/bin/phpize
Configuring for:
PHP Api Version: 20041225
Zend Module Api No: 20060613
Zend Extension Api No: 220060519
Cannot find autoconf. Please check your autoconf installation and the
$PHP_AUTOCONF environment variable. Then, rerun this script.

Then it's because you don't have autoconf installed.

To fix this error, do the following:

or you can install from source (if you want to use the latest version)


cd /usr/local/src/

/* find latest version of m4 here: http://ftp.gnu.org/gnu/m4/ */


To search for a text pattern in files in linux, do the following:

find / -type f -print0 | xargs -0 grep -i 'your pattern'

Whenever you do a database backup using phpMyAdmin, you are presented with a default file name structure for saves, usually like so:

__DB__

which basically gives you the name of the database you just backed up. Which is ok, however, most people would also like the date and time stamp included as well...

So...

This is how it's done... replace the above with :

or for newer version of phpMyAdmin

__DB__ = name of database Example: my_database
%F = Same as "%Y-%m-%d" (year-month-day) Example: 2009-11-25
%T = time stamp . (24 hour format, hour_minute_second) Example: 11_07_31

which will save a file with the naming structure similar to:

my_database-2009-11-25-11_07_31.sql

You can easily use other date/time structure, to suit your personal preference.

To chmod only directories within the directory you're in...

To chmod only files within the directory you're in...

In case your mysqld won't work with

do this:

Set your correct timezone:

* You may need to install timeconfig 'yum install tzdata'

select your timezone.. select "system clock uses UTC"

Customize your ~/.screenrc

source: http://magazine.redhat.com/2007/09/27/a-guide-to-gnu-screen/

source: http://www.directadmin.com/forum/showthread.php?t=19221


cd /usr/local/directadmin
wget http://files.directadmin.com/services/custombuild/1.2/custombuild.tar.gz


We use dovecot on our servers to process email. However, with IMAP it keep freezings so here are possible solutions.

# vi /etc/dovecot.conf

change and/or uncomment :

Source

1. IP
/etc/sysconfig/network-scripts/ifcfg-eth0

2. DNS
/etc/resolv.conf
/etc/hosts

3. Router
/etc/sysconfig/network

4. Restart the network
/etc/rc.d/init.d/network restart

Plesk will overwrite any httpd.conf settings unless you include them in...

/home/httpd/vhosts/DOMAIN/conf/vhost.conf

Install iperf

cd /usr/local/src
wget http://internap.dl.sourceforge.net/sourceforge/iperf/iperf-2.0.4.tar.gz
tar xvfz iperf-2.0.4.tar.gz
cd iperf-2.0.4


Go into /usr/local/src directory

cd /usr/local/src

First, we need to get all the required libraries...

yum search ImageMagick-devel

Source: Vikrant

This actually was the only thing that worked exactly like i wanted.

source

vi /etc/yum.conf

[main]
cachedir=/var/cache/yum
debuglevel=2
logfile=/var/log/yum.log
pkgpolicy=newest
distroverpkg=centos-release
tolerant=1
exactarch=1
retries=20
obsoletes=1

source

I seen where a lot of server management companies are charging big bucks for this, so this might save you some time and money.

First

source: http://www.directadmin.com/forum/showthread.php?s=78bb4e8b8b5deb41fdc7275bb87a051a&threadid=13173&perpage=20&pagenumber=1

http://www.directadmin.com/forum/showthread.php?s=70864a5c335e7705f268e661e0a6d78f&threadid=14285

# ifconfig eth1 192.168.10.12 netmask 255.255.255.0

# cd /etc/sysconfig/network-scripts

Edit the NETMASK lines in the ifcfg-eth0* and in the ifcfg-eth1* files as required.

Source

If email is not being received, but you're able to log in, it may be a permission's problem
(This may occur when restoring backup accounts)

# /usr/local/directadmin/scripts/set_permissions.sh email 

If you're unable to su to root, even if inputing the correct password

SSL Location:

SSH to the old server and go to /usr/share/ssl/certs/, here you find the www.domain.com.crt (SSL Certificate) and the www.domain.com.cabundle (Cabundle), You will find the key www.domain.com.key at /usr/share/ssl/private/ path.

source: http://www.ahinc.com/linux101/users.htm

Source: http://www.webhostgear.com/321.html

For those of you who check your nameservers and other DNS related issues using the popular site dnsreport you're probbaly seeing Fail Open DNS Servers. We'll show you have to fixed named to close open dns servers.