The main components of the Cloudesire platform can be summarized as follows:
- Backend: it represents the "core" of the platform and consists in a set of independent multi-thread modules that uses messaging queues to enable asynchronous, distributed and redundant messaging among components, allowing enterprise integration patterns. Each module exposes a REST API that is used consumed by the other modules and by the web interfaces.
- Control panel: a responsive web application that allows users to manage different entities, according to their role: customers can see their orders status and check availability of their instances; vendors can manage their application catalog, active customers, orders and running instances of their applications; administrator can manage the entire platform and receive updates from the monitoring and alerting systems.
- Marketplace: a responsive web application where a software vendor can publish its own products, along with others vendors products. Customers can browse the catalog, compare products, rate and comment them, place orders or try an application (if the vendor allows it).
Cloudesire Backend modules contains:
- CMW: it's the core of Cloudesire, handles most of the business logic related to the catalog, customers, subscriptions, invoicing.
- Deployer: it is used to create a new cloud instance for each purchased application, to instantiate the required virtual resources and to monitor step-by-step the deployment status: if something goes wrong, it will retry until success. The deployment process is described here. Includes a Cloud Abstraction Layer, a set of connection drivers, used to interact with private or public cloud providers APIs. It provides both heterogeneous hypervisors support (KVM, Xen, vmware) and public cloud connectors (see the list here). It is capable of taking and restoring disk snapshot for backup purposes.
- Monitor: it consists in a scalable repository of system and application metrics that also provides aggregated real-time statistics and graphs.
- VM-Agent: a tiny software component that is running inside every VM mnaged by the Deployer. It push the IaaS metrics (i.e. CPU, Network, RAM, SSD usage) to the Monitor module.
- DNS: provides the remote access of the applications and a custom application endpoint for each deployed instance.
- Hubspot-connector: allow the integration of Cloudesire user-base to the Hubspot CRM
- Microsoft-connector: allow the integration of Cloudesire with Microsoft CSP to enable the selling of Microsoft licenses and Azure resources
- Kong-connector: allow the integration of Cloudesire with Kong API management solution to enable selling of API products into the marketplace
- Keycloak: enables SSO capabilities for marketplace users
Understand the VM deployment process
The deployment process on a specific cloud provider follows this workflow:
- Cloudesire calls a cloud provider chosen by the vendor asking for a VM instantiation (through the cloud provider APIs), having a specific "size" defined by the vendor (i.e. 2 cores, 1GB RAM)
- Cloudesire attaches a data disk to the previously created VM, having the size defined by the vendor
- Cloudesire installs all the application stack (databases, application servers, interpreters, libraries, etc.) needed by the vendor's application for the correct execution (the application stack is declared by the vendor in the onboarding process)
- Cloudesire installs the vendor's application and initializes the related databases into the VM deployed during the steps above mentioned
- Cloudesire creates a specific DNS entry in order to make the application reachable by the customer (e.g. https://application_name-order_id.apps.cloudesire.com)
- the end user (customer of the given application) receives a notification (via email and in its own control panel interface) with all the instructions needed to access its own instance of the application he paid for (URL, default login and password)
The deployment process of legacy applications (i.e. MS Windows desktop executables) that doesn't have an automatic and unattended setup follows a different workflow: in this scenario, a pre-configured windows VM template is cloned by Cloudesire for each order. On the opposite, if the Windows desktop application provides an unattended setup, Cloudesire can follow all the previously described workflow, but the URL provided to the customer refers to a remote desktop connection (i.e. VNC, rdesktop)
How the snapshot backups works
During the deployment process, Cloudesire attaches a data-disk to the previously created VM in which application source code and data (i.e. databases and uploads) are stored.
The backup process follows the following workflow:
- VM shutdown
- data disk snapshot execution (using the cloud provider APIs)
- VM restart
The restore process follows the following workflow:
- VM shutdown
- data-disk detachment and replacement with the previously stored snapshot (using the cloud provider APIs)
- VM restart
During these processes, deployed applications are not accessible (the downtime duration depends on the cloud provider execution time for snapshots/restore operations).
Before starting a backup, all the application data will be copied to this new disk, on which the snapshot will be subsequently executed. In this way, the application will be accessible during the snapshot creation and no shutdown of the VM will be required.
In the same way, the snapshot restore operation will be executed on this new disk, and once it is ready the two disks will be switched. In this way, the application will be accessible during the snapshot restoring and no shutdown of the VM will be required.