What is Cloud Computing Eucalyptus System?


Cloud Computing Eucalyptus System is an open-source and paid computer software. It is an infrastructure for applying cloud computing on clusters. Eucalyptus enables the users for setting up the compute and storage resources on-demand by way of an Infrastructure as a Service (IaaS) product. Companies use software from Eucalyptus to construct private, public, or hybrid clouds.

We can use Eucalyptus software beside IT resources such as servers, networks, storage to make our own data center into a private cloud. Many companies constructing private clouds are worried about the absence of values in this developing area. They don’t need to create a choice now. That would lock them in to an exact vendor and brand it tough to switch in the future.

Eucalyptus was originated beyond a research project in the Computer Science Department at the University of California, Santa Barbara. It developed a for-profit trade named Eucalyptus Systems in 2009.

Eucalyptus Systems

Eucalyptus delivers a combined set of application programming interfaces (APIs). That are well-matched with Amazon Web Services. Eucalyptus Systems proclaimed an official contract with Amazon Web Services (AWS) in March 2012. That is agreeing administrators to move requests between a Eucalyptus private cloud and the Amazon Elastic Compute Cloud (EC2) to create a hybrid cloud.


There are inordinate features of Eucalyptus. Some are being highlighted as;

  • Helps together Linux and Windows virtual machines (VMs).
  • Application program interface well-matched with Amazon EC2 platform.
  • Friendly with Amazon Web Services (AWS) and Simple Storage Service (S3).
  • Do work with many hypervisors with VMware, Xen and KVM.
  • May be installed and deployed from source code or DEB and RPM packages.
  • Inside processes infrastructures are protected via SOAP and WS-Security.
  • Many clusters can be virtualized as a single cloud.
  • Directorial structures for example user and group management and reports.
  • Auto Scaling permits application developers to scale Eucalyptus resources up or down founded on policies defined using Amazon EC2-compatible APIs and tools
  • AWS-compatible service Elastic Load Balancing delivers better fault tolerance for applications.
  • An AWS-compatible service CloudWatch enables users to gather metrics, fixed alarms, classify trends. Also to take action to safeguard applications run easily.
  • Resource Tagging is a fine-grained reporting for showback and chargeback scenarios. That allows IT or DevOps to shape reports that demonstrate cloud operation by application, department or user.

What is Cloud Computing Eucalyptus System

Software architecture​

Eucalyptus commands may achieve both Amazon and Eucalyptus instances. Users can as well move instances between a Eucalyptus private cloud and the Amazon Elastic Compute Cloud to make a hybrid cloud. Hardware virtualization separates applications from computer hardware details.

Terminologies used by Eucalyptus

Images – An image is a static group of software modules. It is started from a well-known baseline. This develops a Eucalyptus machine image (EMI) when bundled and uploaded to the Eucalyptus cloud.

Instances – It is named an instance when an image is placed to use. The configuration is performed at runtime. The Cloud Controller resolves where the image would run. Also decides where to storage and networking is attached to meet resource requirements.

IP addressing – Eucalyptus instances may have public and private IP addresses. An IP address is allocated to an instance when the instance is created from an image. These are pre-allocated by the Eucalyptus cloud. These may be reallocated to a running instance.

Security – TCP or IP security collections share a common set of firewall rules. This is a mechanism to firewall off an instance using IP address and port block or let functionality. Instances are remote at TCP or IP layer 2. A user could operate the networking of instances if this were not present. Also user can achieve entree to adjacent instances violating the simple cloud principle of instance isolation and separation.

Networking – There are three networking modes in architecture.

  • In Managed Mode, Eucalyptus achieves a local network of instances, with security groups and IP addresses.
  • In System Mode, Eucalyptus allocates a MAC address and ascribes the instance’s network interface to the physical network over the Node Controller’s tie. System Mode does not deal elastic IP addresses, security groups, or VM separation.
  • In Static Mode, Eucalyptus allots IP addresses to instances. Static Mode does not deal elastic IPs, security groups, or VM separation.

Access Control – A user of Eucalyptus is allocated an identity. The identities may be grouped together for access control.


The Cloud Controller (CLC)  may be a  Java program  that gives  EC2-compatible interfaces,  also  as  an internet  interface to  the surface  world.  Additionally to handling incoming requests, the CLC acts because the administrative interface for cloud management and performs high-level resource scheduling and system accounting. The CLC takes user API requests from command-line interfaces like euca2ools or GUI-based tools just like the Eucalyptus User Console. It achieves the fundamental compute, storage, and network resources. Just one CLC may be per cloud. It handles verification, office, reporting, and quota management.

The Cloud Controller

Walrus, also written in Java, is that the Eucalyptus like AWS Simple Storage Service (S3). Walrus deals determined storage to all or any of the virtual machines within the Eucalyptus cloud. It can be used as an easy HTTP put or get storage as a service solution. There are not slightly data type limits for Walrus. It can contain images volume snapshots and application data.  Just one Walrus may exist per cloud.

The Cluster Controller (CC) is inscribed in C .It acts as the front for a cluster within a Eucalyptus cloud. It connects with the Storage Controller and Node Controller. It manages instance (i.e., virtual machines) execution and repair Level Agreements (SLAs) per cluster.

The Storage Controller (SC) is printed in Java. It connects with the Cluster Controller and Node Controller and manages Eucalyptus block volumes. It snapshots to the instances within its specific cluster. If an instance requires writing persistent data to memory outside of the cluster, it might   got to write to Walrus, which is out there to any instance in any cluster.

The VMware Broker is an optional component that gives an AWS-compatible interface for VMware environments and physically runs on the Cluster Controller. The VMware Broker overlaps current ESX or ESXi hosts and transforms Eucalyptus Machine Images (EMIs) to VMware virtual disks. The VMware Broker mediates interactions between the Cluster Controller and VMware. It can connect on to either ESX or ESXi hosts or to vCenter Server.

The Node Controller (NC) is written in C and hosts the virtual machine instances. It achieves the virtual network endpoints. It downloads and caches images from Walrus also as creates and caches instances. While there’s no theoretical limit to the amount of Node Controllers per cluster, performance limits do exist.

Mansoor Ahmed is Chemical Engineer, web developer, a writer currently living in Pakistan. My interests range from technology to web development. I am also interested in programming, writing, and reading.
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