v0.2.0

What's Changed in v0.2.0

Changes since v0.1.0: 99 pull requests from 11 contributors (plus Dependabot), including 6 first-time contributors.

API & Status

• Migrate MCPServer status from Phase to Kubernetes-style Conditions by @aliok in #75
• feat: expose MCP server info and capabilities in status by @matzew in #145
• feat: improve status conditions to report pod status on failures by @Cali0707 in #153
• feat(api): add Replicas and ReadyReplicas fields to MCPServerStatus by @matzew in #185

Features & Enhancements

• add aggregation labels to clustrroles by @jaideepr97 in #73
• Add ownership validation to reject foreign-owned and unowned resources by @aliok in #91
• Auto-recover when missing ConfigMap/Secret is created by @aliok in #93
• Validate env[].valueFrom ConfigMap/Secret references in setAcceptedCondition by @matzew in #103
• Distinguish transient API errors from config errors during validation by @aliok in #107
• Add default MCP readiness probe and controller-level MCP handshake validation by @matzew in #111
• feat: trigger rolling update when referenced Secrets/ConfigMaps change by @matzew in #140
• feat: default Service SessionAffinity to ClientIP for stateful MCP sessions by @matzew in #144
• Pass down labels on MCPServer to child resources by @OchiengEd in #79
• feat: support stateless servers by @Cali0707 in #147
• feat: add Delve remote debugging support by @creydr in #201

Observability (Metrics & Events)

• feat: add custom Prometheus metrics for operator observability by @Venkatesh1505 in #122
• Wire EventRecorder into MCPServer reconciler by @ibm-adarsh in #118
• fix(controller): centralize workload labels and metric phase strings by @isumitsolanki in #163
• fix(metrics): delete per-resource counters when MCPServer is removed by @isumitsolanki in #162
• feat(controller): emit ServerReady event when Ready transitions to Available by @ibm-adarsh in #184
• feat(controller): emit events for MCP handshake failures by @ibm-adarsh in #186
• feat(controller): emit event when Deployment reconciliation fails by @ibm-adarsh in #191
• feat(controller): emit event when Service reconciliation fails by @ibm-adarsh in #192

Bug Fixes

• fix: correct Service label-removal and clean up extra metadata helpers by @matzew in #150
• fix(controller): return true on corrupted JSON in custom metadata change detection by @matzew in #168
• fix(controller): persist handshake retry count in status field by @matzew in #166
• fix(controller): apply ExtraLabels/ExtraAnnotations on initial resource creation by @creydr in #197
• fix(mcp): don't leak mcp connections by @Cali0707 in #202
• fix(controller): filter reserved annotation keys from ExtraAnnotations by @creydr in #206
• fix(controller): cancel context before closing MCP session by @creydr in #211
• fix(controller): preserve Ready condition after verified handshake by @creydr in #212
• fix(controller): set API server defaults in desired Deployment spec by @creydr in #209
• fix(controller): skip reconciliation on status-only MCPServer updates by @creydr in #208
• fix(rbac): controller needs watch on pods to create informer by @Cali0707 in #204
• fix(controller): add missing DeepEqual checks for Ports and SecurityContext by @matzew in #214
• fix(controller): sync base managed labels on Deployment update by @creydr in #224

Testing

• Add controller test coverage for owner refs, error recovery, conflicts, and foreign ownership by @matzew in #83
• Add e2e test for MCPServer with everything-mcp-server by @matzew in #112
• feat(makefile): add local Go coverage report targets by @ibm-adarsh in #108
• Add Reconcile-level tests for transient validation error path by @matzew in #115
• Use newTestMCPServer helper in transient validation error tests by @aliok in #123
• Rewrite existing E2E tests using kubernetes-sigs/e2e-framework by @aliok in #164
• Add unit tests for helper functions to improve coverage by @aliok in #173
• Add E2E test failure scenario coverage by @aliok in #181
• Add E2E tests for configuration variations by @aliok in #182
• Add E2E tests for update and reconciliation scenarios by @aliok in #183
• fix(e2e): wait for EndpointSlice before using API server proxy by @creydr in #213
• test(confighash): cover empty ConfigMap data edge case by @matzew in #216
• fix(test): resolve predicate test flake on resource conflict by @matzew in #217

Refactoring & Cleanup

• fix: correct e2e directory path in Makefile comment by @ibm-adarsh in #97
• Extract classifyAPIError helper to deduplicate error classification by @aliok in #114
• Extract newTestMCPServer helper to deduplicate MCPServer test construction by @aliok in #121
• controller: centralize ConfigMap and Secret existence checks in MCPServer validation by @ibm-adarsh in #120
• Divide controller test file by @aliok in #124
• refactor: split mcpserver_controller.go into multiple files by @Cali0707 in #190
• cleanup: add defensive guard on containers length check by @Cali0707 in #203

Documentation & Website

• Website by @aliok in #77
• Fix Netlify build: add GOPATH/bin to PATH and use pip3/python3 by @aliok in #96
• Updating readme and the website by @aliok in #129
• docs: Prometheus metrics reference on documentation site by @ibm-adarsh in #138
• fix: update stateless field docs and add missing test coverage by @aliok in #156
• docs: update Go version and add missing fields to complete sample by @matzew in #236
• docs: fix website documentation for introduction and quickstart by @matzew in #235

CI, Build & Project

• Add release process issue templates and v0.1.0 release issue by @ArangoGutierrez in #81
• Add govulncheck workflow and local make target by @ibm-adarsh in #116
• ci: run govulncheck daily and on PRs to release branches by @ibm-adarsh in #137
• ci: fix lint issues on go 1.26 by @Cali0707 in #152
• ci: declare contents: read on lint, test, test-e2e by @arpitjain099 in #172
• feat: add new owners by @jaideepr97 in #198
• ci: increase e2e test timeout to 1 hour by @creydr in #210
• ci: add verify workflow for generated code by @creydr in #207
• Use the existing docker-buildx Makefile target for cloudbuilds too instead of push-images python script by @creydr in #225
• Add Codecov CI upload and project configuration by @ibm-adarsh in #229
• Increase controller-manager memory limit to 512Mi by @ibm-adarsh in #234
• chore: set tag to v0.2.0 by @jaideepr97 in #238

Dependencies

• Bump actions/setup-go from 6.3.0 to 6.4.0 by @dependabot[bot] in #71
• running 'go get go.opentelemetry.io/otel/sdk@v1.43.0' and tidy by @matzew in #89
• Bump sigs.k8s.io/structured-merge-diff/v6 from 6.3.2-0.20260122202528-d9cc6641c482 to 6.3.2 by @dependabot[bot] in #90
• Bump the k8sio group with 3 updates by @dependabot[bot] in #98
• Bump sigs.k8s.io/structured-merge-diff/v6 from 6.3.2 to 6.4.0 by @dependabot[bot] in #94
• Bump github.com/onsi/ginkgo/v2 from 2.28.1 to 2.28.2 by @dependabot[bot] in #126
• chore: bump Go toolchain baseline to 1.25.9 by @ibm-adarsh in #128
• Bump github.com/onsi/ginkgo/v2 from 2.28.2 to 2.28.3 by @dependabot[bot] in #141
• build(deps): bump github.com/modelcontextprotocol/go-sdk from 1.5.0 to 1.6.0 by @dependabot[bot] in #148
• build(deps): bump sigs.k8s.io/controller-runtime from 0.23.3 to 0.24.0 by @dependabot[bot] in #149
• deps: bump go to 1.26.2 to fix govulncheck errors by @Cali0707 in #151
• build(deps): bump golang from 1.26.2 to 1.26.3 by @dependabot[bot] in #161
• Bump golang from 1.26.2 to 1.26.3 by @aliok in #165
• build(deps): bump the k8sio group with 3 updates by @dependabot[bot] in #169
• build(deps): bump sigs.k8s.io/controller-runtime from 0.24.0 to 0.24.1 by @dependabot[bot] in #170
• build(deps): bump github.com/onsi/ginkgo/v2 from 2.28.3 to 2.29.0 by @dependabot[bot] in #187
• build(deps): bump github.com/onsi/gomega from 1.40.0 to 1.41.0 by @dependabot[bot] in #188
• build(deps): bump golang.org/x/net to fix GO-2026-5026 by @ibm-adarsh in #196
• build(deps): bump github.com/modelcontextprotocol/go-sdk from 1.6.0 to 1.6.1 by @dependabot[bot] in #194
• build(deps): bump golangci/golangci-lint-action from 9.2.0 to 9.2.1 by @dependabot[bot] in #193
• build(deps): bump actions/checkout from 6.0.2 to 6.0.3 by @dependabot[bot] in #221
• build(deps): bump golang from 1.26.3 to 1.26.4 by @dependabot[bot] in #220
• build: bump Go toolchain to 1.26.4 for stdlib vuln fixes by @ibm-adarsh in #228
• chore(deps): switch from dependabot to renovate by @Cali0707 in #232

New Contributors

• @OchiengEd made their first contribution in #79
• @ibm-adarsh made their first contribution in #97
• @Venkatesh1505 made their first contribution in #122
• @isumitsolanki made their first contribution in #163
• @arpitjain099 made their first contribution in #172
• @creydr made their first contribution in #197

Full Changelog: v0.1.0...v0.2.0