[doc] Fix proposal document, add service architecture diag

This commit is contained in:
Oleg Gelbukh 2013-10-16 11:59:40 +00:00
parent c2ca071eb8
commit 988f580df6
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=======================
ARCHITECTURE DATA MODEL
=======================
Overview
--------
We want to introduce unified data structure which contains all information
necessary to inspect, analyze, describe and visualize OpenStack architecture.
This Architecture data model could be consumed and processed by configuration
analysis and diagnostics tool (**Dark Knight**) and by architecture visualizer
(**Stencil**).
Arhictecture data model must include all information necessary to deployment
systems (e.g. **Fuel** or **TripleO**). We will implement simple conversion tools which
will allow to configure these deployment systems and effectively support
'portable' clouds.
This model could be reused by Rally project to compare benchmarking results for
different architectures.
The model can be used to inspect existing clouds for subsequent upgrade.
The model suits as base for questionaire to assess existing installations for
support contract pricing purposes.
The model could be used to perform automated/guided hardening of OpenStack
architecture and configuration.
Data Format
-----------
This section proposes data model format which allows to describe an OpenStack
installation. The model includes data regarding physical infrastructure, logical
topology of services and mapping between the two.
Architecture data model could be serialized as JSON or YaML document of the
following format::
openstack
nodes
node1
-param1: value
-param2: value
services
nova
configuration
-param1: value
-param2: value

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@ -5,7 +5,7 @@ Project Name
------------
**Official:** OpenStack Diagnostics
**Codename:** Dark Knight
**Codename:** Rubick
Overview
--------
@ -13,30 +13,36 @@ Overview
OpenStack cloud operators usually rely on deploymnet tools to configure all the
platform components correctly and efficiently upfront. However, after initial
deployment platform configurations and operational conditions start to change.
We propose a project that allows to analyze OpenStack architecture and diagnose
existing and potential problems using flexible set of rules.
These changes could break consistency and integration of cloud platform and its
components.
Mission
---------
Diagnostics project mission is to **provide OpenStack cloud operators with
flexible way to inspect, analyze and diagnose architecture of the cloud and
configuration of components of the platform**.
Diagnostics' mission is to **provide OpenStack cloud operators with tools which
minimize time and effort needed to identify and fix errors in operations
maintenance phase of cloud life cycle.**
User Stories
------------
As a **cloud operator**, I want to be able to automatically extract
configuration parameters from all OpenStack components to verify their
correctness, consistency and integrity.
As a **cloud architect**, I want to make sure that my OpenStack architecture and
configuration are compliant to 'best practices'.
As a **cloud operator**, I want automatic diagnostics tool which can tell me
what problems does my OpenStack architecture and/or configuration have or might
potentially have (e.g. at scale or if some component or node failed).
As a **cloud operator**, I want to be able to define rules used to inspect and
verify configuration of OpenStack components and store them to use for
verification of future configuration changes.
- As a **cloud operator**, I want to make sure that my OpenStack architecture
and configuration is sane and consistent across all platform components and
services.
- As a **cloud architect**, I want to make sure that my OpenStack architecture
and configuration are compliant to best practices.
- As a **cloud architect**, I need a knowledge base of sanity checks and best
practices for troubleshooting my OpenStack cloud which I can reuse and update
with my own checks and rules.
- As a **cloud operator**, I want to be able to automatically extract
configuration parameters from all OpenStack components to verify their
correctness, consistency and integrity.
- As a **cloud operator**, I want automatic diagnostics tool which can inspect
configuration of my OpenStack cloud and report if it is sane and/or compliant
toc community-defined best practices.
- As a **cloud operator**, I want to be able to define rules used to inspect
and verify configuration of OpenStack components and store them to use for
verification of future configuration changes.
Requirements
------------
@ -48,10 +54,10 @@ Scope
As an MVP1, we create a service that includes:
1. Rules engine with grammatic analysis capabilities
1. Extensible implementation of rules
1. REST API for running inspections
1. Storage back-end implementation for OpenStack platform architecture and
1. Rules engine with grammatic analysis capabilities
1. Extensible implementation of rules
1. REST API for running inspections
1. Storage back-end implementation for OpenStack platform architecture and
configuration data
Assumptions

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@startuml
frame "Rubick" {
[Rubick API]
[Rule engine]
[Config data\nextractor]
[Heat metadata\n plugin]
[Metadata\nplugin 1]
[...]
[Metadata\nplugin N]
[Config data\nstore]
() "env.json"
}
frame "Heat" {
[Heat API]
[Templated\nconfig data]
}
() HOT
[Rubick API] -- env.json
[Config data\nstore] -- env.json
[Heat API] --> HOT
HOT --> [Heat metadata\n plugin]
[Config data\nextractor] -up- env.json
[Rule engine] -- env.json
[Templated\nconfig data] --> [Heat API]
[Config data\nextractor] -- [Heat metadata\n plugin]
[Config data\nextractor] -- [Metadata\nplugin 1]
[Config data\nextractor] -- [...]
[Config data\nextractor] -- [Metadata\nplugin N]
@enduml

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@ -27,16 +27,26 @@ community-driven projects aimed to increase reliablility of cloud and
resilience which allows to support the SLA at reasonably high level (think your
favourite number of nines).
Maintenance stages
Where the product is applicable?
----------------
Proposal Summary
----------------
With this proposal we want to introduce a project aimed to enhance and simplify
operatinal maintenance of OpenStack cloud. Project provides service which uses
rule-based engine (```lettuce```) to inspect configurations of OpenStack
rule-based engine to inspect configurations of OpenStack
platform and find all kinds of architecture- and configuration-level glitches
and inconsistencies.
*# describe motivation behind rules
# describe rules reuse
# desribe rule-based inspection
# example rule
# mandatory rules vs. best-practice rules*
This engine will provide hints and best practices to increase reliability and
operational resilience of the cloud.