Update and edit logsdb docs for logsdb / synthetic source GA

[marciw]

This update focuses on licensing and core functionality for the GA release. All suggestions welcome; some will be moved to new issues (coming soon) for fast-follow or 9.0 improvements.

Updated previews

• Logs data stream (entire topic)
• Index settings (index mode)
• Source fields (banner only)
• Index management (screenshots)

Includes a general editing pass on changes made in #115205 (which didn't get a docs team review) 😿

Closes https://github.com/elastic/search-docs-team/issues/193

Note: I compared the docs to the in-progress blog post and didn't see any gaps, but I'll keep checking the blog post and will link to it from the docs when it's ready.

[github-actions]

Documentation preview:

• ✨ Changed pages

[elasticsearchmachine]

Pinging @elastic/es-docs (Team:Docs)

[leemthompo]

Changes look good to me. How we call out subscription requirements is the biggest factual question for me.

Otherwise, my main qualm with this page is the structure/headings. Here's a potential heading structure that tries to regroup info, and might make the page easier to scan in the TOC:

Overview

Basic setup

Storage optimization
- Synthetic source
  - Fields without doc values
- Specialized codecs 

Sort settings
- Index sort defaults
- Sort orders and modes

Data validation defaults
- ignore_malformed  
- ignore_above
- ignore_dynamic_beyond_limit

Full settings reference

[marciw]

Changes look good to me. How we call out subscription requirements is the biggest factual question for me.

Otherwise, my main qualm with this page is the structure/headings. Here's a potential heading structure that tries to regroup info, and might make the page easier to scan in the TOC:

Thanks, agreed. Not sure I can tackle this now but will make it a "fast-follow" if not

[shainaraskas]

some nits and questions for you! love the edits - it reads much clearer now

[shainaraskas]

logsdb changes lgtm!

are the tsdb "grandfathered" nuances covered anywhere? wondering how people who have old tsdb data streams should expect new ones to behave, or should account for differences between elasticsearch instances.

[shainaraskas]

💚 All backports created successfully

Status	Branch	Result
✅	8.17

Questions ?

Please refer to the Backport tool documentation

[shainaraskas]

💚 All backports created successfully

Status	Branch	Result
✅	8.x

Questions ?

Please refer to the Backport tool documentation

[tylerperk]

Hi @marciw thanks for all the changes. I'll try to do a full review very soon. I did already notice one thing: In https://elasticsearch_bk_118303.docs-preview.app.elstc.co/guide/en/elasticsearch/reference/master/index-modules.html#_static_index_settings it lists "tsds" as a valid index mode. AFAIK this is not valid and should be time_series. TSDS is the common abbreviation for that but is not an actual setting value for ES.

[marciw]

Hi @marciw thanks for all the changes. I'll try to do a full review very soon. I did already notice one thing: In https://elasticsearch_bk_118303.docs-preview.app.elstc.co/guide/en/elasticsearch/reference/master/index-modules.html#_static_index_settings it lists "tsds" as a valid index mode. AFAIK this is not valid and should be time_series. TSDS is the common abbreviation for that but is not an actual setting value for ES.

oof, I think that's been there for a long time -- good catch. Fixed in #118579