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Solution Deployment Descriptor Face to Face November 14-16 Welcome • Thanks to Macrovision and Rob Ross for Hosting this meeting Agenda • Monday 12noon-5PM PT – Introductions – Logistics – Rob Ross – Summarize where we are - Chair – Discuss Process to move forward - Chair – Discuss Software Lifecycle and how this applies to SDD – Randy George – Review Requirements Categories – Christine Draper • Tuesday 9AM-5PM PT – Present Brief Overview of related standards groups: Tom Studwell – Review Detailed Requirements, Identify Obvious cases – Accept In-scope requirements – “Accept” Out-of-Scope requirements – Discuss controversial requirements Logistics • Network • Dinner • Bathrooms • Etc… Where we are… • We have begun a specification document complete with Glossary ;-) • We have collected 210 Use Cases, from 8 different companies/committees, which are potential candidates ways in which SDD may be used. • We have collected lifecycle descriptions that define all the possible places where SDD may be relevant • What we need to do… – We need to agree on a process to arrive at requirements – We need to agree on how the SDD would be used in the lifecycles – We need to resolve Requirements categories established in Use Cases and begin to determine which are in scope and out of scope Proposed Process • Use Cases are useful but insufficient • Lifecycles will help us – round out requirements and – establish in-scope/out-of-scope criteria • Review Lifecycles and determine which aspects affect creation of vs use of SDD • Review Requirements Categories to see if they match Use Cases and Lifecycle Usage • Agree on what categories are in and out of scope for SDD • Discuss and resolve the „uncertain‟ cases. Notes, 11/14/2005 Notes: Process Discussion • Desired end result of face-to-face is a nearly-final set of in-scope requirements against which proposals can be made • We‟ll take advantage of face-to-face exposure to debate the appropriateness of ambiguous use cases Notes: Lifecycle Discussion for Scope Criteria • Randy‟s hypothesis: at some point in the life cycle, deployment meta-data is “frozen” – Extra meta-data may be provided later on to add refinement or for other purposes – A rule of thumb might be: if something is changed or provided after a CD is burned (or could be burned), it doesn‟t apply to SDD – If a piece of info is mutable, probably doesn‟t belong in a static deployment descriptor – Some examples from Randy: • Licensing & entitlement – doesn‟t involve changes to the software “package” but is provided after the package is delivered – Debra: except for certain cases, for example GPL code which is immutable and viral. – Integrators should be able to know if 3rd party software is GPL-covered • Readme file – if it‟s just FYI, not important • The Features of a package – these are applicable, since they are critical info to deployers and integrators • Localization & user-facing display information – some degree of this is applicable as it relates to deployment • Art‟s comment in question of this approach: – All of this is really dependent upon our definition of the verbs used in this lifecycle: e.g. “Install”, “Configure”, “Deploy” • Suggested starting criteria for including information in our meta-data: – Is it relevant to deploying, aggregating, or maintaining the software? – Is it defined by the producer or integrator (and communicated to the deployer/maintainer)? – Does it pertain to the nature of the software? In other words, could it sensibly be bundled with the software or is it provided at a different time or through a different channel? • We should factor in the degree to which this info applies to deployment – Should we capture it in a first-class way or provide “hooks” or enabling info for it? Notes: Lifecycle Discussion for Scope Criteria (cont‟d) • Keisuke asked to what degree bare metal installation is in scope – The group felt disk image deployment was generally in scope • Debra pointed out the need to bake-in and automate specific deployment details, especially for internal enterprise deployment – Does the SDD become immutable once installation takes place, does it become modified to indicate what actually happened? – Can the SDD change once you install it? – The group felt that this should be possible, although there‟s some debate about the extent • Art pointed out that our use cases define a system, of which the schema we‟re defining is a subset – For each use case we should identify the roles of the producer & consumer and identify how the schema needs to serve them Notes: Requirements Categories • Agreed-upon process: 1. Discuss the nature of the initial categories & agree they‟re in scope 2. Deep dive on ambiguous use cases to see if they‟re in scope 3. Deep dive on each category & make sure each of its requirements belong • All initial Categories found to be in-scope (at a high-level…individual requirements to be analyzed for scope in detail) • Clarifications made to Christine‟s requirement categories: – “Solution Lifecycle Management” should include what‟s necessary to actually deploy and maintain software through its lifecycle – “Requirements on Environment” pertains to requirements for all lifecycle changes, not just initial deployment – “Changes to Envrionment” means the “promise” of what the package will do to the environment after each lifecycle change – “Solution Variability” means the solution is like a Class whose variables are set for a particular Instance – “Solution Composition” includes definition of content for one package as well as package aggregation – “Solution Content” is confusing and should be revisited & recategorized • For one, break out requirements for interoperability with other formats into a separate section – Important to distinguish package localization from packages which deploy application localization Notes: Review of “External Requirements” • 99.1 [accessibility requirements] – e.g. should always have a textual stand-in for graphical images – Will be a general requirement: the SDD should not preclude Accessibility according to Section 508 standards – Will be added to a new “Compliance to Standards” section • 99.2 [assistance in decision-making] – We made sure some of these were captured in the “Variability” category – Will create a new category “Decision Support” to capture the rest • 99.3 [info for progress] – Will discuss when James is present • 99.6 [interactive selection and targeting] – Some pieces need to be able to be referred to by a program through a key or ID – To be added to the “Compliance to Standards” section • 99.7 [environment changes to support changes] – Already seems to be covered under “Requirements on Environment” – 99.7.1: not a requirement on SDD, but appropriate for another standards body • 99.8 [build process] – Authoring of an SDD must not require user interaction Notes: Review of “External Requirements” (cont‟d) • 99.9 [development aggregation tooling] – Tooling must be able to analyze requirements • 99.10 [different management environments] – We shouldn‟t prevent lower or higher levels of manageability – This might be done by specifying different “levels” of SDD – You could specify which minimum level you require – For example, deployment of applications to cell phones might benefit from SDD packaging but the engine might utilize only a small subset of information • 99.11 [aggregating readmes] – Readmes and EULAs typically need to percolate up to the solution level when components are aggregated – Keisuke pointed out that management tools could really use this information? • Somehow mark certain files in the schema as a Readme or EULA – This meets our criteria for consideration, but other issues arise: • is there a reasonable standard way to capture this? – The group agreed that this is good meta-data, but it it in scope of the SDD? • We added requirements for this to the “Solution Description” section & will debate – Is there a more general need for a way to mark files that might be viewed before installation with meta-tags? – Incidentally, MSI supports declaration of readme, but not EULA • 99.12 [externalized branding] – This refers to the ability to package software in an OEMable format – This is a use case, requirements: localization, aggregating content & overriding existing content Notes, 11/15/2005 Notes: Related Standards Activities • Tom gave an overview of other applicable standards activity • CDDLM: Configuration Deployment Descriptor and Lifecycle Management (Global Grid Forum) – Standardizing service to do the deployment – We have approached them initially about referencing SDD, more will be done once SDD TC is further along – Tatemura-san (NEC) is our liason to CDDLM • ACS: Describes a repository for applications – Defines an interface to this repository – Also defines an archive format for storing apps in the repository – Fukui-san (Fujitsu) is our liason to ACS • Web Services Distributed Management (WSDM) – Describes managed resources & manageability interfaces – A natural mechanism for SDD packages to deploy their contents • Distributed Management Task Force (DMTF) – Develops models for resources, artifacts, and hosting platforms • OSGI: OSGI bundles are somewhat similar to SDD packages • Datacenter Markup Language (DCML) – Currently reorganizing and in transition – We don‟t currently have a liason • James asked at what point other groups can view our requirements & comment? – Tom: it‟s up to this committee to determine the timing • Also, when are we planning to look at their input & review their content? – That‟s the responsibility of the liason for each group Notes: External Requirements (cont‟d) • 99.3 [progress messages] – This is mostly covered by our use cases – We‟ll note that implementations are free to run operations in parallel unless otherwise specified by dependencies • 99.4 [error logs] – Identity information used in logs is captured in requirement 6.2 – Debra: could the deployment descriptor indicate possible failure conditions when installing that would be referenced in the logs? • Could also define a message for the user what the next step should be – By including this in the SDD descriptor, could be re-presented in an aggregated package – If this is left to the tooling, it may get lost • Should look at use cases and scenarios • We‟ll classify as additional meta-data that could be provdied with the SDD package. • 99.5 [admin privileges shouldn‟t have to be required] – Will be added to requirement 2.1.3 – James warns that if SDD gets down to specifying specific usernames & groups for installing files, it also needs to handle the non- root case – Do we need a way to specify requirements on the existence of users & groups? – James wants package authors to be able to declare that their artifacts & files should be installed with a particular ownership – Does this belong in the SDD description or the deployed artifacts themselves? – We‟ll add a requirement to the “Requirements on Environment” category – We should note that package authors should define the least amount of privilege required to install an application • 99.13 [licensing and registration] • 99.14 [silent/unattended install] – Covered by our requirements – Use Case 112 will be mapped to these • 99.15 [remote install] – We have physical packaging requirements to support efficient use of data – we mapped this use case to these requirements. • 99.16 [interoperability with management systems] – The group feels this is best handled by collaboration with other standardization efforts – This may also relate to the idea of Levels of Compliance – if one runtime supports level X, other runtimes that support level X should be compatible Notes: External Requirements (cont‟d) • 99.17 [update and uninstall of shared components] – Good requirements but don‟t drive any new requirements for the schema. Will be mapped to some requirements in Category 3 • 99.18 [snapshotting of a solution] – Ability to find out all the decisions made during an install and capture them for duplicated installs • Even including what‟s changed since the install – Debra suggests that we keep the round-trip path in mind when defining a schema • 99.19 [user override of errors] – Allow the caller to make decisions or changes that would prevent a reversion upon failure • 99.20 [out of band changes] – A requirement for the engine/tooling, not the schema Notes: External Requirements (cont‟d) • 99.21 [grid requirements] – 149: All application components should be able to be bundled into one archive – this was already captured as a requirement, use case has been mapped. • Also refers to package integrity – a requirement was added to capture this. – 150: Should support a diversity of content types to be installed • We hadn‟t had this as an explicit requirement but added one. – 151: Should allow deployment to geographically separated environments • This is already captured for distributed environments – 152: All info for grid task is stored within the archive • Our requirement is that we won‟t preclude any extra meta-data or content in a package. – 153: SDD Extensions for ACS namespace elements • Keisuke‟s suggestion: have xsd:ANY regions in the SDD to capture custom extended info • How does WSDM provide custom extensions to its schema? • ACS open for public review & comments in December ‟05 – 154 & 155: Operation granularity & incremental updates • SDD archives should reflect the bundled files as naturally as possible & conform to archive standards, so as not to preclude ACS- compliant repositories from updating them incrementally – 156: Archive file format • SDD Charter calls for a standardized package layout, including when packaged as an archive • We also added a reuirement to specify minimum set of archive file formats – 158: Differential archives • It should be possible to send only the necessary material over the wire to optimize network usage – 159: Redundancy elimination • Combining external file references & internal reducdancy elimination, this is covered – 160: Access control • Enabled by our package identity requirements • In addition, we shouldn‟t preclude packages from being encrypted, even when aggregated • In ACS, describes access constraint in ACML standard (only meaningful if the system enforces it) • SDD doesn‟t have anything to say about system-provided security enforcement – 161: Opacity of contents • Met by currently defined requirements Notes: External Requirements (cont‟d) • 99.22 [other maintenance requirements] – These items were pointing out how the basics of requirement & validity checking applied to maintenance operations, not just the initial install – We added a single requirement stating this fact • 99.23 [debug] – If we provide declarative error codes, we may allow them to be marked as Debug rather than Production, for developer testing • 99.24 [localizing SDD descriptions] – We hadn‟t had an explicit requirement for this, but added one • 99.13 [licensing] – Auditing compliance with the license agreement • Requires the application identity already required for SDD – “Activation” • Generic variability mechanisms enable package to let users pass in data” • Does it make sense to call this out as a specific element? – Should examine practical scenarios to see if this really makes sense – Registration • Generic variability accounts for this • May be ancillary given the goal of SDD to focus on deploying solutions into a datacenter • Will research other efforts in the industry (e.g. OpenGroup Systems Management License Use standard) Notes, 11/16/2005 Notes: External Requirements (cont‟d) • 99.13 [licensing, cont‟d] – Auditing and metering • Another use case mapped to application identity – Return receipt • We won‟t preclude this – Single-user license key • We won‟t preclude this – EULA Acceptance • Should SDD packages be able to declare their EULA? • Also, should they be able to reference these in component packages when aggregating solutions? • To what extent are EULA-agreements context-specific & relate to installer front-end vs. application package? – License events • We‟ve forgotten what this meant – will wait for Jay Nash • Use case 123 [component model] – This is covered by our other composition use cases – However, we‟ve added a requirement to state best practices for composition • Use case 127 [layout of components] – Aggregated solutions need to be able to override the relative locations of where things are installed – This is captured by our requirement 5.2 which provides for the overriding of parameters • Use case 138 [system privileges] – Maps to our earlier defined use case for user privileges Notes: External Requirements (cont‟d) • Use case 144 [encryption of sensitive data] – We added a requirement for this • Use case 147 [multiple installations] – We refined some requirements in “Requirements on Environment”, “Projected Changes”, and “Best Practices” • Dell use cases – These were mainly covered by existing requirements – we mapped them as appropriate. – We clarified that the role of SDD is to declare manageable packages, but actual code for provisioning systems or front-end installer applications would be outside the scope of this workgroup (even if packaged in the same physical archive) – We noted that a combination of SDD & other standards (e.g. WSDM) can provide a good framework for the standardization of hardware & firmware updates – We got to use case 203, still need to cover 204-210 Tactical Action Items • Make changes to requirements doc as indicated by the Comments [Tom, 11/17/2005] • Flesh out the content of the requirements document [various, 11/23/2005] • Confirm all use cases in spreadsheet are captured somewhere in the Categories document [Debra, 11/23/2005] • Cross-reference use cases in spreadsheet to requirements [Debra, 11/23/2005] • Update the glossary [Randy, 11/18/2005] – Provide distinguishing definitions for “integration” and “composition” terms – Describe what a “package” is – Identify all overloaded, ambiguous, or missing terms – Distinguish between “End User License Agreement” and “Licensing & Registration” (license keys, etc.) • Requirement analysis tasks: – Submit and analyze requirements for “generic add-ons”. We currently have requirements for language packs in particular, but we realized today that this may be an instance of a more general case for add-ons (e.g. Eclipse plugins, ISMP platform packs, etc.) [Josh, 11/23/2005] – (done) Submit and analyze requirements for including in a descriptor the version of the standard used to create the descriptor – (done) Discuss Sun‟s “External Requirements” when James Falkner is present: • 99.3, 99.4, 99.5 – Revisit revert-upon-failure requirements to cover: [Debra, 11/23/2005] • When a minor piece fails to deploy, don‟t force a revert • Are there pieces which, once deployed, shouldn‟t be reverted, even if the overall solution fails to deploy? – Refine Requirements 2.1 & 1.1.3 to make the following clear: [Tom, Debra, 11/23/2005] • Non-dependent operations may run in parallel • Allow requirements to be defined either as having to be satisfied before the installation or by the end of the installation. – Ensure that Use Case 112 (silent installs) is mapped to all appropriate requirements [all, 11/23/2005] • Zulah (BEA) to approach DCML to become the liason between that group and SDD [Zulah, 11/22/2005] • Tom: find a liason into the SMASH committee [Tom, 11/30/2005] • (done) Tom: attempt to contact Jay for possibly attendance at the meeting • Create a working schedule for the TC to reach completion milestones of charter deliverables [Tom, 11/30/2005]: – Set of specifications including SDD schema (Charter target: January 2006) – Package format specification (Charter target: January 2006) – Primer & examples (Charter target: April 2006) – Requirements forwarded to other standards bodies (Charter target: April 2006) – Best-practices (Charter target: April 2006) Parking Lot Topics • Define the levels of compliance to the SDD to which exploiters can provide implementations – Possibly in a separate document, possibly include in the primer – Determine extent to which this can be defined by this group • Plan when & how to approach other workgroups to review & solicit input • Compare other general-purpose package formats with the SDD – What information does the SDD not capture, and is there a good reason for this? • Review the ACS specification, available in December ‟05 – Identify logical extensions that ACS needs from SDD – Identify technical approach to providing extension points • xsd:ANY? • Separate descriptor with references? • Explicitly-typed additions to the SDD? • Deep-dive on practical scenarios for declaring failure conditions & recovery steps in SDD – Analyze whether “debug-time” failures should be distinguished from those that occur in production • MVSN action item: review the OpenGroup Licensing effort to determine applicability to SDD • Define an architecture of the SDD package, answering the following questions: – What parts of an SDD Package are “first-class” SDD elements? – In what way are ancillary resources stored & located in an SDD package? – Does the “SDD package” logically consist of just the meta-data and related resources, or does it include the Installer UI & other “front-end” resources? • Are there widely-applicable and important use cases that would be served by consistently declaring End User License Agreements (EULAs) in an SDD?
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