High Disk Usage with VIRTFS

We have heard a lot about VirtFS disk consumption issues while checking the disk usage in cPanel server. VirtFS in cPanel/WHM is used to allot a jailed shell environment for users who can access the server through SSH. This environment acts as a container for the user and will not allow the user to access other cPanel account’s home directories on the server. Unlike a normal shell, jailed shell environment has increased security and ability to run commands like crontab and passwd which are not allowed in the normal shell environment.

You can enable jail shell access to a cPanel user by logging into WHM and choose the Manage Shell Access option. The directory structure created when a user accesses jail shell is /home/virtfs/user.

The high disk usage issues with VirtFS commonly occurs when any cPanel user which has access to jail shell for his account logins to the shell and fails to properly log out from his session. Since the bind (virtual) mount for his directory are recreated and not properly released, you must not directly remove any files under this folder structure (/home/virtfs/user) because it is hard linked to actual server directory structure and removing these may cause serious issues to the server.

In order to resolve this issue, we must first release the mount point for that user and kill all jailshell processes related to that user. Make sure there are no jailshell processes or mount points for that particular user. Then we must unmount all the files related to that user. After verifying that all mount points for that user are released, we can remove the contents present in the virtfs folder for that user.

Kindly be cautious not to delete the virtfs folder contents since it is hardlinked to the system files and will result in the entire operating system to become unstable. You can always get in touch with the Supportpro team and our expert techs are available 24X7 to handle such tasks with zero data loss.

Mobile Clouds – The New Content Distribution Platform

Cloud Computing is a term that applies to applications and data storage that are delivered over the Internet, via wireless connection.

Cloud Computing is a model for enabling convenient, on-demand network access to a shared pool.

Mobile Cloud Computing (MCC) can be integrated with the existing cloud system without requiring any additional costly infrastructure.

 

What is Mobile Cloud Computing?

Mobile cloud computing (MCC) in simple terms, refers to an infrastructure where both the data storage and processing happen outside the mobile device.

Mobile-cloud-computing

 

Why Mobile Cloud Computing?

Mobile devices face many resource challenges like battery life, bandwidth and storage. Here comes the role of Mobile Cloud Computing technology. It provides mobile users with data storage and processing services in clouds, thereby eliminating the need to have a powerful device configuration. Such a combination of cloud computing and mobile networks bring benefits for mobile users, network operators, as well as cloud providers. All the resource-intensive computing can be performed in the cloud.

 

MCC Architecture

  1. Mobile devices are connected to the mobile networks through base stations that establish and control the connections and functional interfaces between the networks and mobile devices.

      2. The requests from the mobile users and information are transmitted to the central processors that are connected to servers providing mobile network services.

      3. The requests from the subscribers are delivered to a cloud through the Internet.

      4. In the cloud, the requests are processed by the cloud controllers and deliver the mobile users with the corresponding cloud services.

 

Image result for mcc architecture

 

Applications of MCC

  • Mobile Commerce

           M-commerce allows business models for commerce using mobile devices.

           Eg: Mobile financial, mobile advertising, mobile shopping.

 

  • Mobile Learning

           M-learning combines e-learning and mobility.

           Improved communication quality between teachers and students.

           Enables learners to access remote learning resources.

 

  • Mobile Healthcare

          M-healthcare provides mobile users with convenient access to resources (eg. medical records).

          Another application is the access to health-aware mobile devices to detect pulse-rate, blood pressure, level of alcohol etc.

          Eg: Cloud Doctor

 

  • Mobile Gaming

           Can completely offload game engine requiring large computing resource to the servers in the cloud.

           Offloading aids in saving energy and increases game playing time.

 

  •  Other applications

            Sharing photos/videos, Smart home systems, keyword, voice and tag-based search capabilities.

 

MCC Issues

  • Limited Resources: The limited resources in mobile devices produces difficulties in implementing this technology. The basic limitations related to limited resources are limited computing power, limited battery and low quality display.
  • Network related issues: Network related problems like Bandwidth, latency, availability and heterogeneity since all the processing in MCC is performed on the network.
  • Security: The most common security issues are device security, privacy of mobile user and securing data on cloud,  security threats like viruses, hacking, Trojan horses etc. The use of global positioning system (GPS) in mobile devices gives birth to the privacy issues.
  • Low Bandwidth: As compared with the traditional wired networks, the radio resource for wireless networks is much scarce. A work-around would be to share the limited bandwidth among mobile users who are located in the same area (e.g., a workplace, a station, and a stadium) and involved in the same content.
  • Service availability: Due to various factors like network failures, traffic congestion etc mobile users may not be able to connect to the cloud to obtain service.

 

Advantages of MCC

>> Extended battery lifetime

>> Remote application execution

>> Improved data storage capacity and processing power

>> Improved reliability and availability

>> Scalability

>> MCC for Security: Protecting user privacy and data/application secrecy. The two main categories are Security for mobile users & Securing data on clouds.

 

Conclusion

Mobile cloud computing has a huge potential to become one of the mobile technology trends in the future due to the fact that it combines the advantages of both cloud computing and mobile computing. That traction will push the revenue of MCC to $5.2 billion. The applications supported by MCC including m-commerce, m-learning, and mobile healthcare have been discussed which clearly show the applicability of the MCC to a wide range of mobile services. 

In the present scenario, companies must innovate and get the most from its resources to succeed in the global competitive market. Cloud computing infrastructures are next-generation platforms that can provide tremendous value to companies of any size. They can help companies achieve more efficient use of their IT hardware and software investments and pave way for an accelerated growth.

SupportPro at Japan IT Week (Autumn)

SCOVER1SupportPro – Enhancing Web Hosting Business Worldwide!

We, at SupportPro., cordially invite you to visit us at Japan’s Largest IT Business Platform in Autumn! With our years of experience in the web hosting industry, we have helped more than 1000+ companies to resolve their diverse web hosting challenges. SupportPRO offers expert tech support for Web Hosting Companies and enterprise clients in Japan and across the world.

SupportPRO.com headquartered in Deerfield, in the suburbs of Chicago, is a part of Armia Systems, Inc, an Illinois Corporation. Since we at, SupportPRO understands the complete business processes in the web hosting business, we can relate to your needs and work with you to understand your specific business requirements and incorporate them into our support processes.

Why SupportPro?

  1. One of the Largest Server Management Company with 100+ Full -Time Employees
  2. 15+ Years of experience
  3. More than 51,000 Servers Handled
  4. Dedicated Cloud Management Team
  5. Dedicated Software Development Team
  6. 3 Months In-house Training Program

What makes us different?

  • 24/7 Emergency Helpline – Are you finding it difficult to provide uninterrupted support 24*7?
  • Well trained RHCE, cPanel, AWS, Azure and Microsoft Certified Professionals – Are you receiving support from qualified professionals with expertise in handling Linux and Windows Servers?
  • 14 Min Average Response time – Do you find it difficult to respond instantly to clients?
  • Average Resolution Hours 6hrs – Is your resolution time at par with Industry standards?
  • Highly Secured Infrastructure – Do you have a secure infrastructure?
  • Flexible timing likes 4 hours, 8 hours, 12 hours and 24 hours – Are you capable of providing flexible timings to your clients?
  • Intellectual Property protection assured – Is your Intellectual Property secure as required?

 

TO FIX AN APPOINTMENT

Click Here To Schedule a face to face meeting with our CEO, Mr. Abraham on 8,9 or 10th November 2017 at Japan IT Week.

OR

Call : (312) 423-6728

 

  

 

2018: The year cloud hosting goes mainstream

Web hosting has remained virtually unchanged since the first days of the Internet in 1991: This despite the fact that conventional hosting model has many weaknesses.

Conventional Hosting is Broken

Pragmatists will say we don’t need cloud hosting, quoting the adage, ‘If it isn’t broken, don’t fix it,’ but this doesn’t apply because traditional hosting models have always had problems.

Continue reading…