Ptah compatibility

The operator does not contain Ptah. It runs one, as a job whose container image and version identity the installation binds, so “which Ptah works with this operator” is a question about that executor and not about the CLI a person used to build the OCI artifact.

support/ptah.json is the machine-readable answer, and it is canonical: the lifecycle suite takes the image it runs as the executor out of this file, and the table below is generated from it.

The table

Each operator version has a row in the summary and a section with the detail. A declared range, a verified build and the absence of both mean different things, and the next section says what.

Axis: Operator version to the Ptah build the operator executes, identified by the digest-pinned executorImage and the ptahVersion bound beside it. It is not the Ptah CLI a person used to build the OCI artifact. The runner is not a third axis: it is built from the operator source this row names, and the exact protocol both halves speak is in runnerProtocolVersion.

Last measured: 2026-10-25.

Operator	Declared range	Verified builds	Guide
edge	No range	v0.16.0	edge
v0.2.7	No range	v0.15.0	v0.2.7
v0.2.6	No range	v0.14.0	v0.2.6
v0.2.5	No range	v0.13.0	v0.2.5
v0.2.4	No range	v0.13.0	v0.2.4
v0.2.3	No range	v0.13.0	v0.2.3
v0.2.2	No range	v0.13.0	v0.2.2
v0.2.1	No range	v0.13.0	v0.2.1
v0.2.0	No range	v0.13.0	v0.2.0

edge

The development state. Its guide is at https://operator.ptah.run/edge/.

Declared: No range is claimed. The chart ships no executor default, installation requires both a digest-pinned executorImage and the ptahVersion verified from that image’s provenance, and the supported build is exactly the one the lifecycle matrix exercised.

Verified:

• Ptah v0.16.0. Commit 91e28d4331950e949590fd9ac404373bc17b572d, runner protocol version 1, evidence kubernetes-e2e. The complete OCI resolution and verification, observation, planning, approval, apply, failure-recovery and convergence lifecycle against PostgreSQL and MySQL, on every supported Kubernetes minor, for both artifact formats this operator reads: application/vnd.stokaro.ptah.schema.v1 for a declared schema, whose declared rows converge on both engines, and application/vnd.stokaro.ptah.migrations.v1 for a versioned migration directory, whose history read, approval gate and applied sequence run against PostgreSQL and MySQL.

Limitations:

• The verified build is the release image of the Ptah version under Verified, pinned by digest and run as Ptah published it: the operator builds no executor of its own. It contains stokaro/ptah#3777 and #3794, the complete --json documents of schema plan and schema apply that the operator reads on every declared-schema Plan and Apply. An executor without #3777, v0.9.0 included, rejects --json with exit code 2.
• The migration machine contracts – migrations status --json carrying contract_version and a per-migration record, and migrations up --json carrying an outcome – reached Ptah after v0.3.0-201, and migrations up --expect-sequence, which the operator passes on every migration Apply, reached it in v0.9.0. A build older than v0.9.0 resolves and verifies a migration artifact and then fails at its own history document or at the flag every migration Apply passes, so the versioned workflow needs at least v0.9.0 rather than any build that has the commands.
• The verified scope is the operator’s database support window, PostgreSQL 17.x and MySQL 8.4.x LTS. Other engines Ptah addresses are unverified here, whatever the Ptah build.
• The published verified set is a repository document. It is not compiled into the manager, and nothing compares a running executor’s ptahVersion against it, so a combination outside this set is outside what the matrix measured rather than something the operator refuses. What is refused before a database is mutated is a change of any bound execution component between the plan and the apply – Ptah, the executor image, the runner protocol version, the controller-state version – checked before the Job is created. The manager’s image and revision and the runner image are recorded and not bound: a manager release that changes only them applies the plans and approvals its predecessor left. What is refused after a Job has run is a runner speaking another protocol version, which is a rejected result frame rather than a prevented mutation. Pinning both the executor image and its ptahVersion at install is a requirement on whoever installs, not a check at runtime.

v0.2.7

A released version. Its guide is at https://operator.ptah.run/v0.2.7/.

Declared: the same as edge.

Verified:

• Ptah v0.15.0. Commit 6ba0a93a44d3decd6782d88e57b88151edd4c788, runner protocol version 1, evidence kubernetes-e2e. The scope is the same as for edge.

Limitations: the same as edge.

v0.2.6

A released version. Its guide is at https://operator.ptah.run/v0.2.6/.

Declared: the same as edge.

Verified:

• Ptah v0.14.0. Commit e046527f79c58651d2082dce65b5ceb48dbc2606, runner protocol version 1, evidence kubernetes-e2e. The scope is the same as for edge.

Limitations: the same as edge.

v0.2.5

A released version. Its guide is at https://operator.ptah.run/v0.2.5/.

Declared: the same as edge.

Verified:

• Ptah v0.13.0. Commit eb69f8c4435643c5c9f3fbd1c9953b9ba0f44b6f, runner protocol version 1, evidence kubernetes-e2e. The scope is the same as for edge.

Limitations: the same as edge.

v0.2.4

A released version. Its guide is at https://operator.ptah.run/v0.2.4/.

Declared: the same as edge.

Verified: the same as v0.2.5.

Limitations: the same as edge.

v0.2.3

A released version. Its guide is at https://operator.ptah.run/v0.2.3/.

Declared: the same as edge.

Verified: the same as v0.2.5.

Limitations: the same as edge.

v0.2.2

A released version. Its guide is at https://operator.ptah.run/v0.2.2/.

Declared: the same as edge.

Verified: the same as v0.2.5.

Limitations: the same as edge.

v0.2.1

A released version. Its guide is at https://operator.ptah.run/v0.2.1/.

Declared: the same as edge.

Verified: the same as v0.2.5.

Limitations: the same as edge.

v0.2.0

A released version. Its guide is at https://operator.ptah.run/v0.2.0/.

Declared: the same as edge.

Verified: the same as v0.2.5.

Limitations: the same as edge.

Evidence

• kubernetes-e2e: The full lifecycle suite in test/e2e, run by the kubernetes-e2e job of .github/workflows/ci.yml on every pull request and on the weekly default-branch run. hack/e2e-kind.sh and the workflow both take the image from this file, so the Ptah build the suite runs and the claim published here are one declaration.

Three states, kept apart

A compatibility table usually blurs three different claims. This one keeps them in separate fields, because the difference is what a reader is actually asking about.

Declared is a promise. declared.range names the Ptah versions an operator version is meant to work with. Where it is null, nothing is promised, and declared.statement says why.

Verified is a measurement. Each verified entry names a Ptah build the operator was actually run against, the evidence behind it, and what ran. ptahRelease is null when the build is not a released Ptah, and the table then names the build by ptahDescribe. ptahImage is the Ptah release image that ran, pinned by digest: the suite copies it unchanged and builds no executor, so what the measurement covers is exactly that image. An operator release names the same image, and Releases and provenance says how it is checked against this row.

Absent is neither. A combination no row mentions is untested, and untested is not incompatible. A version with nothing verified carries unverifiedReason naming the check that has not run; the verifier refuses an empty list that says nothing, because an empty list reads as “works with everything”.

What each field means

Field	Meaning
operator	edge for the development state, or an exact vMAJOR.MINOR.PATCH release.
stage	development or released.
documentation.published	Whether a guide exists for this operator version. The table links to it only when it does.
documentation.source	The revision that guide is built from: master for the development state, and its own tag for a release.
documentation.fixRevision	An exact commit that replaces the tag as the build revision for one release.
documentation.fixReason	What that fix corrects. Required beside a fix revision.
declared.range	The promised Ptah versions, or null.
declared.statement	Why there is no range, when there is none.
verified[].ptahRelease	The released Ptah version, or null when the verified build is not a release.
verified[].ptahCommit	The exact Ptah commit the suite built its executor from.
verified[].ptahDescribe	What git describe --tags --always calls that commit in a complete checkout, so a reader sees something other than forty hex characters. A tag name carries no commit to compare, so the verifier accepts one only when it repeats this row’s ptahRelease.
verified[].runnerProtocolVersion	The frame version the executor and the operator spoke in that run. Not a third axis — the runner is built from the operator source the row names — and checked against the constant rather than trusted.
verified[].evidence	A key into evidence, which says what ran and how the tested build and this claim stay one declaration.
verified[].scope	What the run covered.
limitations	Known constraints on the rows above.

One pin, not two

The image in verified[].ptahImage is the executor the lifecycle suite runs, and verified[].ptahCommit is the commit it was built from. hack/e2e-kind.sh reads both from this file, and the kubernetes-e2e job takes the commit from the same place through the support job’s output. The release workflow reads them here too, through hack/releaseverify, when it names the executor in its manifest. Nothing else may write them down:

make verify-ptah-support

The guard refuses a catalog that is malformed or self-contradictory, and it refuses the lifecycle script, the CI or release workflow, or the executor recipe carrying the commit a second time. A literal in any of them would keep working on the day it and the catalog disagreed, and the table on this page would then name a build nothing ran.

The command performs no network requests.

Changing the claim

Changing which Ptah the suite verifies is one edit to verified[].ptahCommit plus its ptahDescribe, and the matrix jobs then run against that build. Do not raise lastVerified without a run behind it; the field records when the claim was last measured, not when the file was last touched.

The drift finding categories the pinned build can emit are recorded in support/ptah-drift-categories.json, with the digests of the Ptah files that produce them: the drift command, the schema classifier and its feature findings, the row summary and the undecided note. The record lists the fixed categories and, separately, the qualified ones Ptah writes bare or followed by :<kind>. The job that builds the shared task images compares the record with the pinned source. A new pin that changed any of those files fails there until the record is rewritten:

go run ./hack/ptahdriftcategories -ptah <Ptah checkout> -write

A unit test holds the operator’s vocabulary to the recorded lists, because the operator refuses a drift report that names a category it does not know. A category the new build adds therefore joins the vocabulary, the PtahSchema status pattern and the CRD schema version in the same change. The pattern keeps every category an earlier release stored, so a summary written before an upgrade still validates. A pin that leaves those files alone needs no edit.

Any change to the file changes the table, so regenerate it in the same commit:

cd docs/site
npm run compatibility:write

Adding an operator release adds a row with its own verified list. A release that has not been run against any Ptah build gets unverifiedReason rather than an empty list, and the table then shows a version nobody has measured instead of a version that works with everything.

Correcting a release guide

A release’s pages are built from that release’s own tag, so a correction cannot arrive by editing master. Assign the corrected revision to the release instead:

"documentation": {
  "published": true,
  "source": "v0.1.0",
  "fixRevision": "<exact 40-character commit>",
  "fixReason": "the install command named a chart path that never shipped"
}

The Git tag does not move and no new binary is released. The revision is a commit rather than a branch because the published pages must stay the ones somebody named, and the reason is required because a fix with no stated correction is indistinguishable from a rebuild.

What a fix may carry is a correction to a command or an explanation. What it may not carry is a feature from development into an older guide. The offline guard holds the shape; the publish workflow holds the property it cannot see, that the commit descends from the release it is assigned to.

Most releases need no entry. This is the explicit exception rather than a documentation branch per release.

Where it is published

The table on this page is the published one. The documentation gate renders it from support/ptah.json again and refuses a page that says something else, so the catalog and the table change in one commit or not at all.

Each guide renders the file at the revision it was built from, so a release guide shows the catalog as it stood at that release’s tag. The development guide is rebuilt from master whenever the file changes, and operator.ptah.run/support/ptah/ always opens its copy. That is the address to link to from elsewhere.

Database engines are a separate axis and live in database support; Kubernetes versions live in Kubernetes support.