March 2014 Meeting Details

The meeting of the “Indian Libre User Group” was successfully held on March 23rd 2014

Date: 23-03-2014

Time: 2:00pm – 5.30pm
Venue: Internet Club, IInd Floor,
AMI Trust Building,Broadway Enclave,
Broadway, Ernakulam

2.30pm – 2.45pm

Customary Self Introduction. People shared their experience with Free Software

2.45pm – 4.30pm

Openvz – Workshop

OpenVZ (Open Virtuozzo) is an operating system-level virtualization technology based on the Linux kernel and operating system. OpenVZ allows a physical server to run multiple isolated operating system instances, called containers, virtual private servers (VPSs), or virtual environments (VEs). OpenVZ is similar to FreeBSD jails and Solaris Containers.

OpenVZ is not true virtualization but really containerization like FreeBSD jails. Technologies like VMWare and Xen are more flexible in that they virtualize the entire machine and can run multiple operating systems and different kernel versions. OpenVZ uses a single patched Linux kernel and therefore can run only Linux, all containers share the same architecture and kernel version. However, as it does not have the overhead of a true hypervisor, it is very fast and efficient. The disadvantage with this approach is the single kernel. All guests must function with the same kernel version that the host uses.

The advantages, however, are that memory allocation is soft in that memory not used in one virtual environment can be used by others or for disk caching. OpenVZ uses a common file system so each virtual environment is just a directory of files that is isolated using chroot, newer versions of OpenVZ also allow the container to have its own file system. Thus a virtual machine can be cloned by just copying the files in one directory to another and creating a config file for the virtual machine and starting it.

4.30pm – 4.45pm

Tea break

Concluding Session

People were requested to handle small technical discussions for the next meeting.

Thanks to all the attendees for coming and they are requested to put their feedback on the mailing list so that we can improve future meetings

The next user meet is on 27th April 2014

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