Select Page

Bobcares Blog

Tried and tested solutions for your servers, from our outsourced support diaries.

Cloud Computing


Building custom software solutions – How we integrated WHMCS and oVirt API for a web hosting provider

Building custom software solutions – How we integrated WHMCS and oVirt API for a web hosting provider

In web-hosting industry, every customer prefers to have a single interface where they can manage the multiple segments of their business – say, support, billing, account, domain, etc.

There are software solutions such as WHMCS, which integrates accounts, billing, support and automation into a single platform and customers can manage them easily.

But for web hosting providers who offer virtualization solutions such as VMs to their customers, there would be a management platform too, to manage and monitor their virtual machines. (more…)

How to mitigate VMware vIDM local privilege escalation vulnerability CVE-2016-5335 and vRA remote code execution vulnerability CVE-2016-5336

How to mitigate VMware vIDM local privilege escalation vulnerability CVE-2016-5335 and vRA remote code execution vulnerability CVE-2016-5336

VMWare has issued a latest security advisory VMSA-2016-0013, which addresses two critical vulnerabilities of VMWare products – CVE-2016-5335 and CVE-2016-5336.

These are severe vulnerabilities that affect VMware Identity Manager and vRealize Automation software. (more…)

Setting up AWS for HTTP/2 support

Setting up AWS for HTTP/2 support

As per recent statistics, websites adopting HTTP/2 protocol are rapidly increasing and around 68% of HTTPS traffic is now attributed to HTTP/2.

HTTP/2 uses techniques to minimize the number of connections and proactively serve page resources to improve site speed and performance.

 

(more…)

What is Rkt (Rocket) container technology? Should you use it?

What is Rkt (Rocket) container technology? Should you use it?

Containers are taking over the world. From VPSs to application hosting, more and more companies now use container technologies such as Docker, LXC and OpenVZ. The latest entrant to this list is rkt, pronounced as rocket.
(more…)

Metal as a Service (MaaS) – Is it for you?

Metal as a Service (MaaS) – Is it for you?

Setting up a server can be time consuming. It involves installing an operating system, setting up networking, configuring various services and securing can take up to 2 hours per server. But what if you can deploy servers in a few mins? That’s what you can do with the open source tool called “MAAS”. (more…)

Building a high availability server virtualization system

Building a high availability server virtualization system

$700 for a 64 GB iPhone 6s? Seemed too good to be true, but that’s what the mail in my inbox said. It didn’t look spammy, so, I clicked on the link, and went to the gadget website. Everything looked legitimate with good user reviews. Great! So, I clicked “buy”, and… the website just went blank. It refused to load any more. I went back a page, but the site was still down.
(more…)

Identifying resource usage and performing migration to address performance issues in a Xen server virtualization environment

Identifying resource usage and performing migration to address performance issues in a Xen server virtualization environment

When Netflix faced an outage in 2011, they had to offer a 3% credit to their customers. The outage was due to a resource crunch in the Amazon cloud they were hosted in. It’s tough for a business to survive if such outages happen frequently.

A cloud hosting provider achieves economies of scale by sharing resources between multiple tenants in the cloud. These resources include computing, storage and network devices. But at times, the cloud provider may oversell the resources to achieve high-density or a single tenant can abuse the server resources. This can affect the performance of the cloud system. (more…)

Design considerations for setting up a KVM server virtualization solution

Design considerations for setting up a KVM server virtualization solution

Surveys indicate that 70% of online businesses adopt server virtualization solutions to reduce their costs [1]. But many times, the virtualization software costs outweigh this cost-benefit. That is where open source server virtualization technologies make a difference.

Choosing the right virtualization technology includes review of factors such as cost, features, security and performance. Recently we were contacted by a hosting provider who wanted to sell cheap VPS plans to SMBs. In this post we’ll discuss our design considerations to implement a server virtualization solution that was affordable, feature-rich, easily scalable and secure. (more…)

Using oVirt API to automate VPS provisioning

Using oVirt API to automate VPS provisioning

It was Xmas time! Every website was flooding with offers and deals. I felt this was the best time to buy a tablet for myself. But many of these online stores had shipping times of 2 or more days.

That’s when I came across Amazon website, which highlighted a ‘Same Day Delivery!’ offer. I didn’t think for a moment before placing my order. Fast product delivery is what drove me to Amazon for my purchase.

(more…)

How to fix oVirt error: “Failed to attach Storage Domain [ ] to Data Center [ ]”

How to fix oVirt error: “Failed to attach Storage Domain [ ] to Data Center [ ]”

Recently, we setup an oVirt system for a cloud hosting provider. Much of the installation went through like a breeze, but we did face a few road blocks which were not covered in the oVirt docs or community.

One such error is “Failed to attach Storage Domain [] to Data Center []“. In the community forums we saw many other users facing the same issue. So, to all oVirt users out there, here’s how we got this error and resolved it. (more…)

Page 1 of 612345...6