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Amazon S3

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Amazon S3 is an online file storage web service. It stores all types of objects through the web services interface. S3 stands for Simple Storage Service. In a web application, the static contents can pressurize the web server, S3 storage helps to load the images and videos quickly to scale up your website’s performance. What are You Going to Learn? Advantages Prerequisites Companies depending on Amazon S3 Terminology used in S3 How to setup and manage Amazon S3 Conclusion Advantages of Amazon S3 Amazon S3 helps to improve the website/web application performance by loading the static contents and reduce the webserver load. Amazon S3 can store any type of file/object in a container which is called ‘bucket’. You can store a single object up to the size of 5TB Amazon S3 allows you to set permissions to the buckets to read/write using unique key and the authentication setup will keep the data secure from unauthorized access. Amazon S3 can be a
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Amazon CloudFront

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CloudFront is a CDN (Content Delivery Network) service which provides quick and faster delivery of web content. A Content Delivery Network helps the web page to load quickly in end user's(visitors) browser and also it helps to improve the Google SERPs. In a web page, the static contents (Images, videos and games) require more time to deliver from the web server. CloudFront distributes the static contents to multiple edge locations and delivers it to the end user quickly and helps to reduce latency. What are You Going to Learn? Advantages of CloudFront Prerequisites How to Deploy CloudFront How to Manage CloudFront Resources Most Common Problems Conclusion Advantages of CloudFront Amazon’s CloudFront has more than 40 edge locations from all over world to improve the content delivery quickly and with minimal errors. It is much cheaper than any other CDN providers. Since AWS is providing other services like EC2, ELB, CloudWatch and RDS, it is
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Openstack to Cloudstack Template Migration

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This blog covers the image/template migration between Openstack to Cloudstack platform. To be precise, converting the image from QCOW2 format to VHD format and upload it to Cloudstack platform.   Requirements Root access privileges to openstack and cloudstack with Xen server platform Enough free space to do the conversion python 2.7 to run a http server Image Download This part is already covered in one of my existing blogs. Please refer  https://benyraja.blogspot.in/2017/03/templateimage-migration-with-reduced.html 'Image Download' section. Image Conversion Once we have downloaded the image to local disk, we have to convert it into VHD as it is the supported version of Cloudstack Xen hypervisor. If you are using KVM hypervisor, then we can skip to next step. Use the below command to convert the image from QCOW2 to VHD. $ qemu-img convert -O vpc Now you will have the converted image in VHD format. Image Upload/Register Template To register tem
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Template/Image migration with reduced file size

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In any migration or moving the data from one platform to another, the most difficult challenge is the file size of the image. When we convert the VM instance as a template/image/snapshot it is nothing but a complete clone of the entire disk along with free sectors. Hence even the data is only 10GB the image will be around 30GB or more when the disk size is around 40GB. Moving or uploading a 30GB file over ethernet (even in fast ethernet), it is still a difficult time consuming job and it must work without interruption.   We faced a similar challenges in moving the templates from Openstack platform to VMware Esxi. In this blog, we will explain how we move the Openstack Virtual machine to VMware Esxi host with minimal effort and 100% working. I'm actually covering only QCOW2 image to VMDK image conversion in this section, however using the same methods we can do the conversion between any formats like QCOW2 to VHD, QCOW2 to OVA and vice versa.  Let us go step by step. Re
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How to delete a WhatsApp group

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I have struggled to find out on how to delete a WhatsApp group that I created mistakenly. Since there are no options available directly in the screen and it showed like below. So I did the below steps to delete it. 1. Remove all the participants from the Group. 2. After you remove all the participants, you have to exit yourself from the group, by clicking the button "Exit Group". 3. Now you will see the "Delete Group" button appear on the screen. 4. Delete the group happily and start talking to the next person. Save humanity.
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In memory of A.P.J. Abdul Kalam

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This is happened on a school function, where our people's president was the chief guest. During his talk, he insisted the school students to ask any question. One student around 7 years old asked "Which achievement gave you great happiness?" He smiled and answered "I'm shocked to hear a deep question from you. Well, I was happy many times, during the successful satellite launch, during the Agni and Prithivi missile launches, and also i was happy when the nuclear test was successful. But during the missile research, i created a new composite, which is like a fiber, weightless yet very stable and hard to break. When my project director visited our laboratory which is located at Hyderabad, i showed him my creation can be used in our future missiles. He said, you are going to use this on a thing that causes tragedy (missile), also why don't remove the tragedy through this. I was confused. Then he took me to the orthopedics hospital near our place. I saw
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