Author Archives: Spring Systems

Sample Ansible commands.

Running Ansible commands on remote hosts. Ansible default inventory file is /etc/ansible/hosts which keeps list of all hosts. You can setup number of hosts within groups. tail -n 15 /etc/ansible/hosts How to ping all servers in ansible inventory file. [root@ansible-master ~]# ansible … Continue reading

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How to Install/Deploy Ansible on CentOS 7

Introduction: Ansible is powerful automation and configuration management tool written in python. Ansible does by default communicate with machines over the SSH protocol, Ansible is agent free, does not require any additional agent/daemons to be installed on remote machines. You … Continue reading

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Understanding Open vSwitch

To understand what Open vSwitch is, first we need to understand virtual switching and network layer access. Earlier the servers had to physically connect to the switch in the data center. This was supposedly inconvenient if the data center and … Continue reading

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Developing Open v Switch to enhance network Virtualization.

Network virtualization and migration to cloud is the future for networking. The virtual layer 2 and 3 in Open source Virtual network abstraction is the most sought after project in Linux coaching. Open vSwitch development is also following the same … Continue reading

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File and Block Storage and Object Storage – The Difference

File and block storage have been used for decades and are well defined ways to store data. Object storage on the other hand is relatively new, hence the obvious question is – How different is Object storage? How is it … Continue reading

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OpenStack – Advantages of Deployment

OpenStack is really coming of age as a private cloud solution. But the other side of the story is that its deployment is extremely complex. With more and more enterprise going to the cloud environment, OpenStack training has become an … Continue reading

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Why python is better for scripting

Python has been backed by Google as a scripting language. It has since become very popular for scripting. As a general high level language Python has left other languages like Lua and Tcl way behind. One of the main reasons … Continue reading

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Tips to clear a technical interview

There are loads of tips available which talk about how to crack a technical interview. All interviews follow a pattern and can be cracked. First thing is to build up the confidence and prepare well. Interview success depends on many … Continue reading

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What is the future of Openstack?

The Tokyo summit on Openstack in October 2015 was great success. The main point of discussion was whether Openstack should remain a cloud based platform or expand to become an enterprise solution. So what is in store for Openstack or … Continue reading

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Advantages of Online Learning

The future of learning is through the internet and online. A recent survey revealed that nearly 4 million students are enrolled in full online degree programs, and 10 million are taking at least one online course which includes Red Hat … Continue reading

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