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Copyright 2015 Open Platform for NFV Project, Inc. and its contributors
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# Common
This directory contains those files which belong to the "OPNFV-Installation and Maintenance" phase of the installation process.
The OPNFV install process consists of two main phases:
* **BASE-INSTALLATION:** Installation of plain-vanilla VM-manager (for BGS, OpenStack will be used as VM-Manager)
* (repeatable) install of a plain vanilla VM-manager (for BGS this is OpenStack) that deploys to bare metal and supports a HA-setup of the VM-manager
* the installation is performed with an installer “i” that creates a system in state BASE(i).
* Files which are specific to an installer process are found in the directory of the associated installer approach (e.g. "fuel", "foreman", "opensteak", etc.)
* Once the installation of the plain vanilla environment is complete, the installer i is terminated. The system is left in state BASE(i) and handed over to the second phase.
* **OPNFV-INSTALLATION and MAINTENANCE:** Installation of OPNFV specific modules, maintenance of the overall OPNFV installation
* the system state for this second phase is called OPNFV(x) - where x is determined by a particular OPNFV release item.
* install deltas to state BASE(i) to reach the desired state OPNFV(x). Deltas would be defined as a set of scripts/manifests. Given that the state BASE(i) differs by installer used, the scripts could also be different. That said, it is a clear objective to make these scripts as generic and independent from the installer used as possible.
* maintain the system in state OPNFV(x)
* decouple device configuration from orchestration; allow for different tool chains to be used for device configuration and orchestration. I.e. rather than couple device config and orchestration with a single tool such as puppet in master-agent mode, enable a single tool to be focused on config (e.g. puppet in master-less mode) and another one for orchestration (e.g. Ansible/Salt driving upgrade of components, download of particular manifests to the nodes etc.
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