Adding pharos project spec.rst in docs/

JIRA: PHAROS-8 - Adding pharos spec.rst ar request of Trevor including
images; all sourced from https://wiki.opnfv.org/pharos/pharos_specification

Change-Id: I754c0d34d851bc080113fdb125089bfed9d13760
Signed-off-by: Victor Laza <vlaza@cloudbasesolutions.com>

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+Pharos Specification
+=====================
+
+Objectives / Scope
+-------------------
+
+Pharos spec defines the OPNFV test environment (in which OPNFV platform can be deployed and tested …
+
+- Provides a secure, scalable, standard and HA environment
+- Supports full deployment lifecycle (this requires a bare metal environment)
+- Supports functional and performance testing
+- Provides common tooling and test scenarios (including test cases and workloads) available to the community
+- Provides mechanisms and procedures for secure remote access to the test environment
+
+Virtualized environments will be useful but do not provide a fully featured deployment/test capability
+
+The high level architecture may be summarized as follow:
+
+.. image:: images/pharos-archi1.jpg
+
+Constraints of a Pharos compliant OPNFV test-bed environment
+-------------------------------------------------------------
+
+- One jump (provisioning server) in which the installer runs in a VM
+- 2 - 5 compute / controller nodes
+- Jump server provisioned with CentOS7
+- Installer (e.g. Foreman) runs its own DHCP server therefore management network should not have DHCP server
+- Remote access
+- A lights-out network is required for remote management and bare metal provisioning capability
+
+Target Systems State
+---------------------
+
+- Target system state includes default software components, network configuration, storage requirements `https://wiki.opnfv.org/get_started/get_started_system_state <https://wiki.opnfv.org/get_started/get_started_system_state>`
+
+
+Rls 1 specification is modeled from Arno
+
+* First draft of environment for BGS https://wiki.opnfv.org/get_started/get_started_work_environment
+* Fuel environment https://wiki.opnfv.org/get_started/networkingblueprint
+* Foreman environment https://wiki.opnfv.org/get_started_experiment1#topology
+
+Hardware
+---------
+
+**Servers**
+
+CPU:
+
+* Intel Xeon E5-2600 (IvyBridge at least, or similar)
+
+Local Storage:
+
+* Disks: 4 x 500G-2T + 1 x 300GB SSD (leave some room for experiments)
+* First 2 disks should be combined to form a 1 TB virtual store for the OS/Software etc
+* Remaining should be combined to form a virtual disk for CEPH storage
+* The 5'th disk (SSD) for distributed storage (CEPH) journal towards SSD technology.
+* Performance testing requires a mix of compute nodes that have CEPH(swift+Cinder) and without CEPH storage
+* Virtual ISO boot capabilities or a separate PXE boot server (DHCP/tftp or Cobbler)
+
+Memory:
+
+* 32G RAM Minimum
+
+Power Supply Single
+
+* Single power supply acceptable (redundant power not required/nice to have)
+
+**Provisioning**
+
+Pre-provisioning Jump Server
+
+* OS - CentOS7
+* KVM / Qemu
+* Installer (Foreman, Fuel, ...) in a VM
+* Collaboration Tools
+
+Test Tools
+
+Jumphost - `functest <http://artifacts.opnfv.org/functest/docs/functest.html>`_
+
+Controller nodes - bare metal
+
+Compute nodes - bare metal
+
+**Security**
+
+- Servers
+
+  - Default permissions
+  - Server Logins
+  - **Pharos team needs to provide consistent usernames for infrastructure**
+
+Remote management
+------------------
+
+**Remote access**
+
+- Remote access is required for …
+
+  1. Developers to access deploy/test environments (credentials to be issued per POD / user)
+  2. Connection of each environment to Jenkins master hosted by Linux Foundation for automated deployment and test
+
+- VPN is optional and dependent on company security rules (out of Pharos scope)
+- POD access rules / restrictions …
+
+  - Refer to individual test-bed as each company may have different access rules and procedures
+
+- Basic requirement is for SSH sessions to be established (initially on jump server)
+- Majority of packages installed on a system (tools or applications) will be pulled from an external storage solution so this type of things should be solved in a very general sense for the projects
+
+Firewall rules
+
+- SSH sessions
+- Jenkins sessions
+
+Lights-out Management:
+
+- Out-of-band management for power on/off/reset and bare-metal provisioning
+- Access to server is through lights-out-management tool and/or a serial console
+- Intel lights-out ⇒ RMM http://www.intel.com/content/www/us/en/server-management/intel-remote-management-module.html
+- HP lights-out ⇒ ILO http://www8.hp.com/us/en/products/servers/ilo/index.html
+- CISCO lights-out ⇒ UCS https://developer.cisco.com/site/ucs-dev-center/index.gsp
+
+Linux Foundation - VPN service for accessing Lights-Out Management (LOM) infrastructure for the UCS-M hardware
+
+- People who can authorize access … 1) 2) 3)
+- The people who request VPN access must have a valid PGP key bearing a valid signature from one of these three people. When issuing OpenVPN credentials, LF will be sending TLS certificates and 2-factor authentication tokens, encrypted to each recipient's PGP key.
+
+Networking
+-----------
+
+Test-bed network
+
+* 24 or 48 Port TOR Switch
+* NICS - 1GE, 10GE - per server can be on-board or PCI-e
+* Connectivity for each data/control network is through a separate NIC. This simplifies Switch Management however requires more NICs on the server and also more switch ports
+* Lights-out network can share with Admin/Management
+
+Network Interfaces
+
+* Option 1: 4x1G Control, 2x40G Data, 48 Port Switch
+
+  * 1 x 1G for ILMI (Lights out Management )
+  * 1 x 1G for Admin/PXE boot
+  * 1 x 1G for control Plane connectivity
+  * 1 x 1G for storage
+  * 2 x 40G (or 10G) for data network (redundancy, NIC bonding, High bandwidth testing)
+
+* Option II: 1x1G Control, 2x 40G (or 10G) Data, 24 Port Switch
+
+  * Connectivity to networks is through VLANs on the Control NIC. Data NIC used for VNF traffic and storage traffic segmented through VLANs
+
+* Option III: 2x1G Control, 2x10G Data, 2x40G Storage, 24 Port Switch
+
+  * Data NIC used for VNF traffic, storage NIC used for control plane and Storage segmented through VLANs (separate host traffic from VNF)
+  * 1 x 1G for IPMI
+  * 1 x 1G for Admin/PXE boot
+  * 2 x 10G for control plane connectivity/Storage
+  * 2 x 40G (or 10G) for data network
+
+Storage Network
+----------------
+
+- Needs specification
+
+** Topology **
+
+- Subnet, VLANs (want to standardize but may be constrained by existing lab setups or rules)
+- IPs
+- Types of NW - lights-out, public, private, admin, storage
+- May be special NW requirements for performance related projects
+- Default gateways
+
+.. image:: images/bridge1.png
+
+controller node bridge topology overview
+
+
+.. image:: images/bridge2.png
+
+compute node bridge topology overview
+
+Architecture
+-------------
+
+** Network Diagram **
+
+The Pharos architecture may be described as follow: Figure 1: Standard Deployment Environment
+
+.. image:: images/opnfv-pharos-diagram-v01.jpg
+
+Figure 1: Standard Deployment Environment
+
+
+Tools
+------
+
+- Jenkins
+- Tempest / Rally
+- Robot
+- Git repository
+- Jira
+- FAQ channel
+
+Sample Network Drawings
+-----------------------
+
+Files for documenting lab network layout. These were contributed as Visio VSDX format compressed as a ZIP file. Here is a sample of what the visio looks like.
+
+Download the visio zip file here: `opnfv-example-lab-diagram.vsdx.zip <https://wiki.opnfv.org/_media/opnfv-example-lab-diagram.vsdx.zip>`
+
+.. image:: images/opnfv-example-lab-diagram.png
+
+FYI: `Here <http://www.opendaylight.org/community/community-labs>` is what the OpenDaylight lab wiki pages look like.
+
+