Bundle mcli RELEASE.2026-08-06T00-00-00Z in the container image (pin
and both architecture digests; interop with the new server was
verified end to end during release acceptance) and align the CI
fixture default in install-mcli.sh.
Point the Helm chart defaults at the first real silo image tag:
docker.io/pgsty/silo is a fresh repository, so the inherited
RELEASE.2026-08-04 default could never pull. Chart version moves to
7.0.1 with appVersion RELEASE.2026-08-06T00-00-00Z; the packaging
tripwire in verify-helm-migration.sh follows.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
helm/minio becomes helm/silo: chart name silo, version 6.0.0 -> 7.0.0, the
MinIO wordmark icon replaced with the project's own, image.repository and
mcImage.repository pointing at pgsty/silo, and the container command changed to
silo. User-visible titles, comments and documentation links are rebranded. The
MINIO_* environment variables and every existing values key are kept - the
first Silo chart is a rename, not a values-schema migration.
The hard problem is that a chart rename normally rewrites Kubernetes resource
identity, and a StatefulSet's selector and volumeClaimTemplate are immutable.
An existing release upgraded carelessly would either fail or orphan its PVCs.
Two things address that:
- Templates no longer derive the container name from .Chart.Name. It comes from
a helper, so nameOverride can pin it, which means an existing release can be
upgraded with nameOverride=minio, fullnameOverride=<existing-fullname> and
serviceAccount.name=minio-sa and render byte-stable identity while switching
chart and image.
- helm-migration-guard and verify-helm-migration.sh make that a gate rather
than a documented hope. The script lints the chart, renders it in distributed
and standalone modes plus the optional templates, then renders the legacy
chart from a pinned commit and the new chart with those three overrides and
compares resource identity. The guard additionally rejects any rendered
container still pulling pgsty/minio or invoking /usr/bin/minio. It runs
through a pinned alpine/helm image when helm is not installed locally, so the
gate does not depend on the developer's machine. Currently green over 7
compared resources.
Rollback is asymmetric and the README says so: the old chart with the new image
survives via the entrypoint argv shim, but the new chart with an old MinIO
image does not, because `silo server` is not a command that binary knows. Only
`helm rollback` is supported, never an image-only downgrade.
Not addressed here: the default image tag is pgsty/silo:RELEASE.2026-08-04T00-00-00Z,
which does not exist yet. The chart must not be published until the first Silo
image is pushed.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Feng Ruohang