Tuesday, March 17, 2015

CentOS 6 and Auto Starting Apache httpd at Boot

Setting Apache To Automatically Start on Boot

Recently I had to install 11 Cent OS servers. These servers were to be all identical and were installed using the simple "web server" option during installation time. 
The servers all had Apache 2.0 installed but the service httpd was not set to start automatically with the system. After applying the SSL certificate to all 11 servers, I wanted to test the installation by simply rebooting the servers to be sure the settings took and stuck.  
Setting Apache httpd to start automatically is simple. This also works with Cent OS 5 (outdated but just in case you need to deploy version 5 for some reason it is good to know). 

Setting Apache To Auto-Start on Boot

Step 1 – Check to ensure the httpd service (Apache) is installed

[root#] chkconfig --list|grep http

If installed properly, you will see as the output of the command above

[root#] 0:off  1:off  2:off 3:off 4:off 5:off 6:off

Step 2 – Set httpd (Apache) to auto start with the system when re-booted. 

[root#] chkconfig httpd on

Step 3 – Confirm the Apache httpd service is set to auto-start 

Run the same command from Step 1 to see that httpd is set to auto-start
[root#] chkconfig --list|grep http
and will see as the output of the command :
[root#] 0:off  1:off  2:on 3:on 4:on 5:on 6:off

That's it, you're done.  I ran the commands on all servers and they all worked after rebooting. 
Apache httpd started with the system after rebooting. 

Sunday, February 09, 2014

Internet Browser Usage Statistics 2013

Internet Browser Usage Statistics 2013
Major Internet Browsers

Internet Browser Usage Statistics 2013

Chrome has passed Internet Explorer as the Internet browser of choice around the world and that had continued through 2013. Firefox is gaining in usage and some points throughout the year was only points away from Internet Explorer.

When the browser wars began many decades ago, it was not believed that any browser would surpass the might and wide-spread use of IE. Google has done a lot to improve their browser and are working equally as hard to gain traction in the desktop OS arena as well.

Should they commit the resources to an OS as they have done to dominate the browser market we could soon be seeing a new leader in desktop OS deployments.


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Saturday, April 07, 2012

Chrome Surpassing Safari and Opera as the Browser of Choice on Apple macs

Image is Courtesy of: www.WebDevelopersNotes.com

Chrome vs Opera vs Safari : Browser Battle

Google's Chrome was released on several years ago and has managed to gain dramatic share in usage,. Although Google also supported Firefox, it seems it's abandoning Firefox and developing Chrome as the competitor of choice to Internet Explorer. Internet Explorer I believe will not be surpassed by Chrome. I find Chrome to a good browser and I use it daily on almost all of my computers but it does not have support for many of the things I need it for. 
For example, I connect to many networking devices and other appliances used in information technology as part of the infrastructure for managing or containing important information system. 

There are many who like and appreciate the "simple and clean interface" but that's all illusion of what a browser today is used for.  I personnaly dislike not having a menu-bar and no option to add one either. For average web usage such for browsing for videos, music, shopping or social networking, it works well. It lacks the support from developers to enable it to do as much as Internet explorer can. It's a browser, it's not a viable option in many cases to be a front-end application. 

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Thursday, March 22, 2012

Configure Idle and Disconnect Timeout Settings in XenApp 6.x

Configure Idle and Disconnect Timeout Settings in XenApp 6.x and XenApp Fundamentals

XenApp 6.0 for Windows Server 2008 R2

XenApp 6.5 for Windows Server 2008 R2

The session limits applied using the ICA listener configuration utility only affect connections to a XenApp server. The session limits settings in a user policy only apply to XenDesktop.
  •  Click the Start menu, select All Programs, Citrix, Administration Tools, and then click on ICA Listener Configuration.
  • Select the ICA-TCP listener, and click the Edit option.  
  • On the Session Limits tab, configure the disconnected sessions timeout in the drop down menu in the End Disconnected Session section.

    Click Okay and Close.

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Monday, November 07, 2011

Disable Session Reliability in XenApp 6

Disable Session Reliability in XenApp 6

One of the requirements of published apps in citrix is to limit the user to a single instance of a published application. In xenapp 6, the checkbox in the published application properties that states limit the user to one session does not seem to do the trick by itself and often brings about errors. Users receive errors like "the server has reached the maximum number of connections" and others of similar effect.

So what everyone does is uncheck the box and find what is different about xenapp 6 or even worse think there is a larger problem with their xenapp 6 installation. The solution is simple enough.
Limiting session for a user to one per app can be accomplished using a policy. Create a new computer policy for the farm and disable session reliability. Once session reliability is turned off, check the box in application properties to permit only one instance of the published app .

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