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Amazon AWS – Change volume type – SSD GP2 to SSD IOPS – Part 13
This article will walk through that how to change the AWS EBS volume type from SSD GP2 to SSD IOPS volume type. Changing the volume type is not straight forward for all the volume types. Due to the...
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Amazon AWS – Change EBS volume type using Snapshot – Part 14
This article will walk through that how to change the AWS EBS volume type using snapshot feature. There is a limitation with AWS that you can’t change the volume type on fly. You must need to halt the...
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Oracle Solaris Cluster – Configure Oracle Database with Dataguard- Part 1
This article will provide step by step procedure to manage the oracle Database under Sun-cluster aka Solaris cluster on Oracle Dataguard environment. Oracle Dataguard is widely used product for the...
View ArticleOracle Solaris Cluster – Configure Standby Oracle Database – Dataguard – Part 2
Here is the step by step procedure to bring the oracle Dataguard standby instance under sun cluster control.Once you have completed the primary node setup , you are good to proceed with standby...
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CLOUD WAR – Openstack vs VMware vSphere vs Amazon AWS
Cloud War or Data-center war ? There is a healthy competition out in the market to reduce the overall operating cost on IT. Companies are benefited with the cloud revolution, Virtualization and...
View ArticleLINUX – SCSI Device Management – Identifying Devices
This article is going to share very least used SCSI commands on Linux operating systems. These commands will be very useful to identifying SCSI devices and tuneable parameters. There are few utilities...
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Para virtualization vs Full virtualization vs Hardware assisted Virtualization
Virtualization is nothing but abstracting operating system, application, storage or network away from the true underlying hardware or software. It creates the illusion of physical hardware to achieve...
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Virtual Machine Live Migration – How it works ?
Virtualization’s revolution has pushed many technical challenges from “impossible” category to the “possible” category. Live Guest OS Migration can be considered as one of the major benefits of the OS...
View ArticleHow to Install Ansible Engine on CentOS / RHEL
Installing the Ansible engine and set up the environment is pretty straightforward. Ansible engine can be installed on the majority of Linux flavors which includes CentOS, RHEL, Ubuntu, and Debian but...
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Ansible – How to Prepare and Setup Client Nodes ?
Ansible doesn’t require an agent to push the changes but it needs few configurations on the client side to access the server and perform the tasks without prompting for username/ password/other...
View ArticleAnsible – How to Setup Inventory for Easy Operations ?
In Ansible, Setting up inventory is one of the most important tasks. Ansible can work with multiple servers at the same time but the challenge is how to classify the servers. While setting up Ansible...
View ArticleAnsible – Command vs Shell vs Raw Modules
Ansible uses modules to complete the task on the remote server. The most commonly used command modules are “command”, “shell”, and “raw”. Each module has its own advantages and disadvantages. In...
View ArticleAnsible – Running Command on Ad-hoc Mode
Ansible allows administrators to execute on-demand tasks on Ansible managed servers. The ad-hoc commands are the most basic operations that can be performed with Ansible engine. Each ad-hoc command is...
View ArticleAnsible – Using File & Copy Modules in Ad-hoc Mode?
Ansible “Ad-hoc” mode can be used to copy/delete/modify files on the specific host or Group of hosts using ansible modules. File module is used for setting file attributes like permission, ownership...
View ArticleAnsible – What is Playbook ? Play with Tasks & Handlers
Ansible – What is playbook? Playbooks are useful to perform multiple tasks and eliminates the limitation of Ad-hoc mode. Playbooks are the configuration, deployment and orchestration language of...
View ArticleAnsible – How to Gather facts on Remote Server ?
Ansible – “setup” module is responsible to gather facts of the remote hosts. The system facts are nothing but the system configuration which includes the hostname, IP address, filesystems, OS...
View ArticleAnsible – How to Use facts on Playbooks ? Conditional Check
Ansible playbook can make changes to the list of servers in quick time. Ansible’s setup module is able to identify the host’s types, OS distributions, and many other facts. For an example, You got a...
View ArticleAnsible – Use Loop Functions in Playbook
Ansible “loop” option might look like little backward but it will very useful when you want to perform the repetitive tasks. For each section in ansible playbook, we need to provide a meaningful name....
View ArticleAnsible – How to Store Playbook Result in Variable ?
Ansible playbooks/roles often used to complete the specific task which does not require an output. In some cases, you might need to capture the complex command output as results. The output would help...
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NAKIVO Backup & Replication v8.0 with ASR Released
Much awaited NAKIVO Backup & Replication v8.0 is released on Aug 27, 2018, with the rich set of features. NAKIVO Backup & Replication v8.0 bundled with Automatic Site Recovery. The Automatic...
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