2026-08-31 · run 2026-08-31-multidb-26.0.0-to-26.7.3

multi-DB re-runs at 26.7.3 (MySQL, MariaDB)

Environment

Field	Value
Keycloak from → to	26.0.0 → 26.7.3 (direct)
Distribution	quay.io/keycloak/keycloak
Start mode	`start` w/ external DB
Engines	MySQL 8.4, MariaDB 11.4
Fixtures	`baseline-26.0.0-mysql-typical-1k` (1,000 users), `baseline-26.0.0-mariadb-typical-200` (200 users)
Host	laptop

Engine	Hop	Time	Index audit	Realm
MySQL 8.4	26.0.0 → 26.7.3	20s	121/121 correct	1,000 users intact
MariaDB 11.4	26.0.0 → 26.7.3	20s	121/121 correct	200 users intact

Symptom: restore.sh failed on the mysql engine with MYSQL_ROOT_PASSWORD: unbound variable — the checked-in .env was created from a pre-multi-DB .env.example.
Cause: .env is gitignored and was never regenerated after the multi-DB variables were added to .env.example.
Fix: appended MYSQL_VERSION/MARIADB_VERSION/MYSQL_PORT/ MYSQL_ROOT_PASSWORD/ORACLE_* to .env. A fresh cp .env.example .env would do the same; worth a lab-up.sh guard that .env carries every .env.example key.
Would this hit a customer? No — lab tooling only.

Oracle: snapshot.sh/restore.sh/index-audit.sh are not ported to Oracle (need Data Pump expdp/impdp + *_INDEXES/*_IND_COLUMNS), and the Oracle Free container's first init is ~11 min. Needs a dedicated session.
Kubernetes rolling update: kubectl/kind/k3d are not installed on this host. Needs tooling install + a kind cluster before the 26.0.0 → 26.7.3 Infinispan mixed-cluster leg can be re-run.