How does this Apache web server works?
It is a program which runs under a suitable multitasking OS.For example  Unix and Windows 95/98/NT, which we call Win32. The binary is called httpd under Unix and apache.exe under Win32 and normally runs in the background. Every copy of httpd/apache that is started has its attention directed at a web site  which is  for practical purposes, a directory.

Where does Apache Web server store its config files ?
For finding the location where apache is installed and to print configuration file location, run the following command:

# httpd -v

This is the output from Fedora Core/RedHat (RHEL) Linux server:

Server version: Apache/2.0.54
Server built:   Dec19 2005 05:35:00
Server’s Module Magic Number: 20120903:9
Architecture:   32-bit
Server compiled with….
-D APACHE_MPM_DIR=”server/mpm/prefork”
-D APR_HAS_SENDFILE
-D APR_HAS_MMAP
-D APR_HAVE_IPV6 (IPv4-mapped addresses enabled)
-D APR_USE_SYSVSEM_SERIALIZE
-D APR_USE_PTHREAD_SERIALIZE
-D SINGLE_LISTEN_UNSERIALIZED_ACCEPT
-D APR_HAS_OTHER_CHILD
-D AP_HAVE_RELIABLE_PIPED_LOGS
-D HTTPD_ROOT=”/etc/httpd”
-D SUEXEC_BIN=”/usr/sbin/suexec”
-D DEFAULT_PIDLOG=”logs/httpd.pid”
-D DEFAULT_SCOREBOARD=”logs/apache_runtime_status”
-D DEFAULT_LOCKFILE=”logs/accept.lock”
-D DEFAULT_ERRORLOG=”logs/error_log”
-D AP_TYPES_CONFIG_FILE=”conf/mime.types”
-D SERVER_CONFIG_FILE=”conf/httpd.conf”

HTTPD_ROOT points to default location /etc/httpd and line SERVER_CONFIG_FILE points to configuration file conf/httpd.conf. So the path is /etc/httpd/conf/httpd.conf

If you are using Debian Linux try apache-perl:

# apache-perl -V
cPanel/Plesk Control Panel

If you are using third party control panel, then you can find out Apache configuration file inside your /home/username/ directory or /var/www/vhosts/ directory.
Using find command

This is an old good (read as geekey) classic way to locate httpd.conf file:
# find / -name ‘httpd.conf’ -print

You may have to wait for few seconds/minute to search complete. Or try out locate command:
# locate httpd.conf

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When you want to launch a website first thing you will have to look for is a host. You can find many of them on search engines. Free hosting is only; suitable for the one looking for personal homepage for family or friends. You may be wondering how the free hosting providers earn revenue, well the answer is they will put ads on your homepage and will earn handful of revenue. Who are new and have small business go for Affordable Web Hosting package. If there business get along well they will have to upgrade their Email Hosting or Affordable Web Hosting packages. People who have urge to earn some money likes reseller hosting, as it gives them chance to earn something. VPS (virtual private servers) are for those who need privacy, high bandwidth and want to install own applications. However if bandwidth usage increase performance is affected. Last and the final solution for the big business with large clients and heavy traffic is Dedicated Servers. Dedicated servers as the name suggests is devoted to a high purpose. Dedicated servers are devoted to single organizations or persons. Signing up for a dedicated server eventually means that the person is leasing a whole server. User will get the complete control on the server including hardware install and Operating systems and high resources. Even the client can operate an entire hosting company. Most common features of dedicated server are as follows:

1) High speed

2) 100% Uptime guarantee

3) SSH/Remote Access to the server

4) Reboot/restart application

5) Freedom to install applications

6) 24*7 Server Monitoring and many more.

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eUKhost, a leading UK dedicated server hosting provider offers customized load balanced server solutions, clustered hosting solutions as well as Server Mirroring for large businesses and resource intensive applications which require a greater level of reliability and scalability to support millions of site hits along with 100% uptime. Generally, system administrators who are trained in BIND and DNS could setup “round-robin” DNS to send traffic to 2 servers without even knowing if the second web server was even online and functioning. With customized load balanced servers’ solutions, the load-balancer constantly checks on each server and adjusts the traffic as needed depending upon the server load, server response and capacity. During the design and implementation of a load balanced solution, eUKhost engineers will setup the solution based on the website traffic and businesses needs.

Key Features of Load Balanced Servers/Clustered hosting solutions:

* Ability to optimize applications
* Ability to add additional web servers as rapid growth requires it
* 100% uptime
* Complete scalable hardware
* Advanced monitoring for the highest level of reliability
* High availability to ensure application accessibility
* Distributed traffic across multiple web/application servers
* Complete redundancy
* High-end E-Business capabilities.

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Server Mirroring is a real time data synchronization process from one server (primary server) to the other server (secondary server). This process ensures that an identical copy of the data on primary server exists on the secondary server. In short server mirroring process can also be described as utilizing the secondary server as a backup server which synchronizes all the data of the primary server with the help of Rsync backup technology. In such a setup, the servers are configured in such a manner that if the primary server goes down for any reason or any service on the server fails, the secondary server with all the data up to date can immediately take its place without any downtime for the websites hosted.

Some of the major advantages of Server Mirroring are:-

* Effective setup to achieve fault tolerance.

* 100 % uptime guarantee.

* Real time data synchronization ensures that an up to date copy of all the data is available on the secondary server.

* Rsync technology used in such setups usually tracks file changes independently and replicates only the data which has been changed/updated since the last backup rather than copying an entire file again.

* Disaster Recovery – No downtime or data loss with real-time disk-to-disk synchronization of all the data.

* This setup involves both the servers to be active and work together thereby enabling efficient use of resources of both the servers and increasing overall redundancy of each server.

Though a little expensive than a single dedicated server setup with RAID 1, server mirroring is a highly effective setup to achieve fault tolerance. It’s expensive because it involves two web servers, primary server mirrored by an identical server which is the secondary server whose only purpose is to be there in the event of a failure of the primary server.

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Have you ever felt the need to have redundancy or maybe even a failover solution for your SQL Server database?

If yes, perhaps you should look for a SQL Server Clustering or a SQL Server Mirroring solution. I have come across many users who need a disaster recovery solution for their web application. One of those users has a system which runs on Microsoft ASP.NET with a MS SQL back-end. He was suggested the possibility of MS-SQL mirroring by a web hosting provider. According to the web host this solution is a very good for applications which require very small changes to the application itself and require the minimum amount of hardware and additional software.

These servers also share a common Virtual IP address for the SQL server and the IP will be assigned to the node that is running the SQL service and the same IP should be used in the scripts to connect the SQL server.
These servers will also use the internal vLAN to check the availability of each not in the cluster with the Heart Beat Method.

A quick overview of the suggested SQL Clustering service is as follows:

- You require 2 uk dedicated servers, a primary database server and a secondary database server with a SAN device (Storage Area Network).

- The setup require SQL Server Enterprise Edition for the primary and secondary database servers.

- Cluster Service acts as a back-end solution which provides high availability for applications such as databases. Both servers in the cluster remain in constant communication.

- Both SQL Servers share a common storage space on a SAN device attached using iSCSI cards. SAN stores the SQL server files as well as the databases.

- The network drive on SAN device is available on the primary database server only. If the primary database server goes down for any reason the secondary server in the cluster will take over the SQL service along with the network drive causing no down time. This process is known as ‘failover’

- In this cluster, the secondary server remains inactive as an SQL server unless it is required to act as a primary database server.

- When both the servers are connected in a cluster together, they appear as a single computer to clients.

You can also read upon Microsoft article with more information about MS SQL mirroring at http://www.microsoft.com/technet/prodtechnol/sql/2005/dbmirror.mspx

It all depends on how important the availability of your website / application is. If you require absolutely no downtime, then this kind of mirroring solution that would be suitable for your needs.

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Shared hosting is the most affordable type of web hosting and works well for a large number of people looking to host their first website. If it is a business website, chances are it will continue to grow which would result in more web space and bandwidth requirement and CPU and memory usage. This is where a thought of investing in a dedicated server comes to mind. A uk dedicated web server is a physical server which belongs only to one user and allows the user far more control over functioning and management along with more bandwidth, software options, memory as well as server security which ensures that your website is as secure as possible for both you as well as your website users/visitors. A dedicated server makes more sense for those users who are looking to host a resource intensive application or multiple ecommerce websites or simply need superior performance from their web hosting.

As always, there are some pros and cons associated with all types of web hosting. With shared server hosting you are limited in terms of storage space as well as bandwidth allocation. You do not have total control over your hosting as the server is shared and root access is disabled. You may also feel the lac of performance at times especially if many of the hosted websites are high traffic and growing rapidly. This rush of activity often causes too much load which doesn’t allow your website to be as effective as it should be.

E-commerce websites often have a difficult time on shared web hosting. This is where a dedicated server can make all the difference. With a dedicated server you have a lot more options as far as software and even hardware solutions and upgrades are concerned. A dedicated server allows you to take total control of your hosting environment with full root access and a control panel to manage your website the way you want to do.

There are far more Dedicated servers options available for those who have websites growing and businesses that are rapidly expanding. If you not too sure if you can manage the complete server on your own you can consider a uk managed dedicated server, which is a managed service provided by many dedicated server providers. With a managed dedicated server all of the technical aspects of a dedicated server are taken care of by the provider himself in the way of hardware, software, your control panel, and more.

If you are not happy with the level of service you receive from your current web server in the way of response times, bandwidth, RAM, and software options you may want to look for a uk dedicated servers provider. A dedicated server costs a bit more than other web hosting plans, but the service you get in exchange is definitely worth it.

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As has been the case with web hosting services all these years, cheap isn’t always the best, you get what you pay for etc. This pre-conceived notion can be changed though with proper research and some due earnestness. One can actually find a pretty decent dedicated server deal if he/she knows how to research and identify.

Firstly, it is highly imperative as to how and what would we define a dedicated server deal as ‘cheap’. The price for a fairly competent dedicated linux server (i.e. CentOS/Fedora Core/RedHat etc with a dual core processor, at least 160 GB hard drive, 1 GB of ram and cPanel/WHM control panel installed) generally varies from around $120.00/month to $180.00/month. The price range I have mentioned is based on my own experience and research so there would obviously be some exceptions but in general, you would notice that most of the larger hosting providers fall somewhere in that range and their multi-processor servers are priced considerably higher. If you are just looking to host a fairly busy website of yours or a bunch of multiple smal/medium websites then such type of servers are the ones you should ideally consider. You might also comes across quite a few servers in lower price brackets then these which are generally referred to as ‘budget dedicated servers’. Such servers can also be considered for hosting a busy website or multiple smalled websites however you need to keep in mind that these are BUDGET Dedicated Servers as a result of which they may not have the same service guarantees or customer support level as the higher priced dedicated servers.

Many people get confused between the terms ‘Virtual Private Server’ or ‘Virtual Dedicated Server’ and how they match up to a physical dedicated server. One major difference between a ‘Virtual’ dedicated server and a standard shared hosting account is that there are less number of users on one server and you have far more control over the server resources as compared to what you would have on a standard shared hosting plan. The performance would also vary depending upon the others server users and the applications or types of websites they host. Whilst there may only be 3 or 4 others sharing the same server, you only have to have one of those users overloading the server to affect you. If you are serious about your business and websites, perhaps this is the time you should consider having a dedicated server that you don’t have to share with others.

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