Phase 5 of v0.3. Adds an explicit, on-disk state machine to the update agent
so the lifecycle of an attempt is observable end-to-end, instead of being
inferred from logs and side effects.
New package update/pkg/state:
- Phase enum (idle, checking, downloading, staged, activated, verifying,
success, rolled_back, failed)
- UpdateState struct persisted to /var/lib/kubesolo/update/state.json
(overridable via --state). Atomic write (.tmp + rename). Survives reboots
and slot switches because the file lives on the data partition.
- Transition helper that bumps AttemptCount when an attempt starts, resets
it when the target version changes, sets/clears LastError on
failed/success transitions, and stamps StartedAt + UpdatedAt.
- 13 unit tests cover the lifecycle, atomic write, version-change reset,
error recording, idempotent SetFromVersion, garbage-file handling.
Wired into the existing commands:
- apply.go transitions Idle -> Checking -> Downloading -> Staged, with
RecordError on any step failure. Reads the active slot's version file to
populate FromVersion.
- activate.go transitions to Activated.
- healthcheck.go transitions Activated -> Verifying -> Success on pass,
or to Failed on fail. Skips transitions if state isn't post-activation
(manual healthcheck on a stable system shouldn't churn the state).
- rollback.go transitions to RolledBack with LastError="manual rollback".
- check.go intentionally untouched — checks are passive queries, not
attempts; they shouldn't reset AttemptCount.
status.go gains a --json mode that emits the full state report (A/B slots,
boot counter, full UpdateState) for orchestration tooling. Human-readable
mode also prints an Update Lifecycle section when state.phase != idle.
pkg/metrics gains three new series, derived from state.json at scrape time:
- kubesolo_update_phase{phase="..."} — 1 for current, 0 for all others;
all nine phase values always emitted so dashboards see complete series
- kubesolo_update_attempts_total
- kubesolo_update_last_attempt_timestamp_seconds
Server.SetStatePath() configures the file location; defaults to absent
which emits Idle defaults. Three new tests cover the absent / active /
all-phases-emitted cases.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
- Gitea Actions CI pipeline: Go tests, build, shellcheck on push/PR
- Gitea Actions release pipeline: full build + artifact upload on version tags
- OCI container image builder for registry-based OS distribution
- Zero-dependency Prometheus metrics endpoint (kubesolo_os_info, boot,
memory, update status) with 10 tests
- USB provisioning tool for air-gapped deployments with cloud-init injection
- ARM64 cross-compilation support (TARGET_ARCH env var + build-cross.sh)
- Updated build scripts to accept TARGET_ARCH for both amd64 and arm64
- New Makefile targets: oci-image, build-cross
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
