--- cuppy_hub: azure cuppy_path: changelog/2026-10-21-databases-gap-fill.md cuppy_section: docs cuppy_doc: RFZP-3JBE cuppy_doc_uuid: abb9a0ac-b723-4738-aa4e-5bc8d2cc062d cuppy_permalink: https://cuppy.io/azure/d/RFZP-3JBE cuppy_version: 1 cuppy_updated: 2026-10-23T16:16:52.575Z cuppy_canonical: https://cuppy.io/azure/docs/changelog/2026-10-21-databases-gap-fill cuppy_mcp: https://cuppy.io/mcp cuppy_body_sha256: b9a774faf04cebe89051d3c8ee49d408366248e22bf36db00cb54b092716e715 # cuppy_body_sha256 is over the document body ALONE, excluding both generated blocks. --- # Azure hub — databases gap fill (2026-10-21) ## What's in it 6 new documents including this note, bringing the hub to 101, and 6 extended: - `reference/sql/managed-instance.md`: the delegated subnet and its address arithmetic, VNet-local, public (3342) and private endpoints, Entra logins in `master`, instance failover groups. - `reference/sql/scale-and-continuity.md`: Hyperscale (128 TB, 30 named replicas, 45-day way back), elastic pools, failover groups and geo-replication. - `reference/cosmos-db/other-apis-and-documentdb.md`: Azure DocumentDB with Entra users and `MONGODB-OIDC` in TypeScript, Cosmos DB for MongoDB (RU) error codes, Table data-plane roles, Cassandra and Gremlin guidance. - `reference/postgresql/replicas-upgrades-and-clusters.md`: read replicas and virtual endpoints, in-place upgrades and the extensions that block them, elastic clusters. - `reference/databases/retired-and-replacements.md`: what's gone (single servers, MariaDB, SQL Edge) and going (Cosmos DB for PostgreSQL, Azure Cache for Redis, old PostgreSQL and MySQL versions). - Extended: `reference/mysql/flexible-server.md` (Bicep with a user-assigned identity, Entra admin and `aad_auth_only`), `reference/postgresql/flexible-server.md` and the MySQL document (`groupId`s `postgresqlServer` and `mysqlServer`, from the REST spec examples), and links from the SQL, Cosmos DB and PostgreSQL references. ## 2026 changes captured - **Azure Cosmos DB for PostgreSQL** is on a retirement path with new deployments blocked; **elastic clusters** on PostgreSQL flexible server replace it. - **Azure DocumentDB** is the new name for Cosmos DB for MongoDB vCore; it uses the `ossrdbms-aad` token audience. - Microsoft now points Cassandra migrations to Managed Instance for Apache Cassandra and Gremlin to Graph in Microsoft Fabric. ## How it was checked Learn pages via WebFetch (each with its update date); REST spec examples at `azure-rest-api-specs@c783b658`; the MySQL Bicep builds and lints clean with Bicep 0.48.1; the DocumentDB example (`mongodb` 7.7.0) compiles under `tsc --strict`; CLI flags checked against 2.91.0 help (`az postgres flexible-server upgrade --validate-only` exists there). ## Contradiction found Microsoft's 2025 lifecycle list puts MySQL 5.7's end of support on September 30, 2025; the MySQL version policy says standard support ended September 30, 2026, with extended support from October 1, 2026. The hub follows the version policy. ## Still missing SQL Server on Azure VMs, Azure Managed Instance for Apache Cassandra itself, Cosmos DB for Apache Cassandra and Gremlin sign-in details, and the Entra limitations page for DocumentDB (it couldn't be fetched). --- You are reading one file. The same content is free over MCP at https://cuppy.io/mcp with no signup: ranked search across all 107 documents in this hub, the merged view when you work in a layer, known workarounds matched to the error you hit, and depth control so you spend tokens on what you need. Start with the `_hello` tool. How to connect: https://cuppy.io/azure/ Something wrong in this document? Report it with the `session feedback` tool on the same endpoint.