Client Server Systems

Download Developing and Hosting Applications on the Cloud by Alex Amies PDF

By Alex Amies

During this distinctive identify, key builders of the IBM SmartCloud company proportion crucial insights for constructing and working cloud-based suggestions on any cloud platform. Drawing on their unsurpassed in-the-trenches adventure, the authors assist you boost the recent attitude and talents had to reach cloud environments, the place improvement, company, and procedure operations are associated extra tightly than ever.
Using examples in keeping with IBM SmartCloud firm, the authors hide a large choice of cloud «use cases,» whereas additionally introducing basic rules for automating and optimizing IT infrastructure in any cloud environment.
They commence by means of featuring an authoritative, available evaluate of cloud computing and Infrastructure as a carrier (IaaS) cloud options. subsequent, they exhibit tips on how to use cloud instruments, increase uncomplicated cloud functions, and make the most of criteria to set up interoperability among clouds. eventually, drawing on deep own adventure, they provide best-practice strategies for all aspects of cloud web hosting, together with safety, tracking, functionality, availability, and company help. all through, they emphasize real-world challenge fixing, supplying a number of code examples and sensible demonstrations of real-world instruments and utilities.

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Because it is based at the framebuffer level, it can operate on all Windows systems, including Linux/UNIX and Windows. VNC is open source software available under the GNU license. ” NX is commercial/open source developed by NoMachine. NX Server and Client are the components of the platform, which operates over an SSH connection. The big advantage of the MoMachine NX system is that it works over a secure channel. NX also compresses the display Desktop Virtualization 33 data and uses a client proxy to make optimal use of network bandwidth.

Some distributed file systems can span many servers. Apache Hadoop is an example of such a distribute file system used by many large web sites with huge storage requirements. 4 compares different basic storage options. 4 Comparison of Different Storage Options Storage Option Advantages Disadvantages Local block based High performance Lifetime tied to a virtual machine Remote block based Can be managed independently, with a lifetime not tied to a virtual machine Cannot be shared among multiple virtual machines Local file based High performance Lifetime tied to a virtual machine Remote file based Can be shared among different clients Relatively lower performance The persistence of virtual machines and their local storage can vary with different virtualization methods.

Xauthority, if it does not already exist. See the section “Remote Desktop Management” in Chapter 6 for more details on VNC. Add a firewall rule for the ports VNC needs by adding a line to the file /etc/sysconfig/ iptables: -A RH-Firewall-1-INPUT —protocol tcp —destination-port 5900:5902 -j ACCEPT This is an alternate method to the command described previously and saves the rule. Restart the firewall with the service command, as root: # /sbin/service iptables restart See the “Firewalls” section in Chapter 7 for more on managing firewall rules.

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