Blogs

One of our junior sys admins told me he was trying to figure out how to modify his monitoring script during maintenance windows (the monitoring script is called automatically by the monitoring agent on the box.) I told him to use a "stop file."

At or near the top of your script (a simple bash script,) put a block like this:

if test -f /tmp/do_not_run
then

echo "Ok"
exit 0

fi

Then, during maintenance windows, create the /tmp/do_not_run file and the script will simply exit without attempting to perform any actions against the system. When the maintenance window is over, remove the file and everything goes back to normal.

"Similarly the Katello project will be an upstream component of the CloudForms product. We first announced the Katello project and the future of Satellite at the 2011 Red Hat Summit." http://katello.org http://katello.org/faq.html https://fedorahosted.org/katello http://www.redhat.com/summit/2011/presentations/summit/whats_next/thursday/summit-2011.warner_sanders_t_1400_future_of_satellite-v7.pdf

Test box: Ubuntu Linux Gnome. Install: sudo apt-get install nautilus-image-converter Photo: Select the photo and place it in a new folder. Right-click on the photo --- scroll down to option "Resize Images" and select 800x600.

Steaming Server Software http://www.subsonic.org You can install on Linux, Mac or Windows. You can select the package or the standalone package. Instructions: http://www.subsonic.org/pages/installation.jsp Our test box: Centos server -->| java-1.6.0-openjdk | subsonic4.6.rpm | open firewall on centos | Login on port 4040 | set router port-forwarding for streaming outside your network| Upload Media: SSH to your box to upload your media files to the server. Mobile App: To stream to your device. http://www.subsonic.org/pages/apps.jsp

Video demo of setting up Fedora 16.

This is an open source version of web conferencing, similar to Webex. They have a vmware image of this at http://code.google.com/p/bigbluebutton/wiki/BigBlueButtonVM

http://bigbluebutton.org

These turn-key LAMP stacks come in a variety of applications. Download the vmware image and run it. Once you learn the application flow, you might want to build it from on a fresh LAMP VM image, or customize your own version. If you want to move to production, pay Bitnami a monthly fee and run their customs builds in Amazon ec2.

http://bitnami.org/stacks

This is the presentation used for the meeting June 11th 2011.