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Provisions managed Kubernetes (mk8s) clusters and registers existing ones as BYOK locations on Control Plane. Use when the user asks about a Kubernetes cluster, mk8s, BYOK, node pools, add-ons, or multi-cloud K8s.
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Basado en la clasificación ocupacional SOC
Writes cpln CLI commands and workflows for Control Plane. Use when the user asks about cpln login, cpln apply, cpln workload, CLI or CI/CD deploys, container debugging with cpln exec/logs, or any cpln resource command.
Promotes workloads across dev/staging/production on Control Plane. Use when the user asks about environment promotion, org-per-environment, cross-org image pulls, image promotion, deploying to production, or rollback.
Sets up CI/CD pipelines and GitOps for Control Plane. Use when the user asks about GitHub Actions, GitLab CI, Bitbucket, CircleCI, building images in CI, kaniko, cpln apply in pipelines, or service-account tokens for CI.
Builds, pushes, and manages container images on Control Plane. Use when the user asks about Docker build, remote build, image registry, tags, digests, Dockerfile, buildpacks, pull secrets, ECR/GCR, or image permissions.
Primary skill for creating, updating, running, and debugging workloads on Control Plane; routes to a deeper skill per subject. Use when the user asks to deploy or run a container, app, API, service, worker, or job, or to change, scale, expose, secure, or diagnose one.
CDN caching and request rate limiting for Control Plane workloads. Use when the user asks about CDN, Cloudflare, CloudFront, edge caching, rate limiting, request throttling, per-key or per-route limits, or DDoS protection.
| name | mk8s-byok |
| description | Provisions managed Kubernetes (mk8s) clusters and registers existing ones as BYOK locations on Control Plane. Use when the user asks about a Kubernetes cluster, mk8s, BYOK, node pools, add-ons, or multi-cloud K8s. |
Tool availability: the
create_mk8s_*/update_mk8s_*tools live in themk8stoolset profile (?toolsets=mk8s;fullincludes it). If an mk8s tool is not advertised, tell the user to reconnect with?toolsets=mk8s. Provider credential secrets (opaque token, gcp, keypair) must already exist — created by the user; offer to draft the manifest for them to fill and apply (setup-secretskill). Reads and deletes work on every profile vialist_resources/get_resource/delete_resource(kindmk8sorlocation).
Control Plane has three separate "Kubernetes" stories people routinely conflate — get the right one first:
byok add-on (below). Resource kind mk8s.location, provider byok.addOns.byok makes an mk8s cluster register itself as a Control Plane location: it links a location you create and installs the agent automatically (no manual cpln location install). This is how Control Plane workloads run on an mk8s cluster.(If the user instead wants to manage Control Plane resources from kubectl, that is the k8s-operator skill, not this one.) The dominant failures: reaching for a nonexistent cpln mk8s create; skipping the per-provider credential secret; and leaving the cluster's API-server firewall wide open.
Exactly one provider per cluster (the schema enforces XOR). For every provider except AWS and Generic, create the credential secret first, then reference it in the create call.
| Provider | Create first (credential) | Node-sizing field | Location/region |
|---|---|---|---|
aws | deployRoleArn — an assumed IAM role, no secret (also needs vpcId) | instanceTypes[] | region |
azure | opaque secret (sdkSecretLink) — service-principal creds | size | location |
gcp | gcp secret (saKeyLink) — SA JSON key | machineType | region |
digitalocean | opaque secret (tokenSecretLink) | dropletSize | region |
hetzner | opaque secret (tokenSecretLink) | serverType | region |
linode | opaque secret (tokenSecretLink) | serverType | region |
oblivus | opaque secret (tokenSecretLink) | flavor (GPU enum) | datacenter |
lambdalabs | opaque secret (tokenSecretLink) | instanceType (GPU enum) | region |
paperspace | opaque secret (tokenSecretLink) | machineType (GPU enum) | region |
triton | keypair secret (connection.privateKeySecretLink) | packageId | location |
generic | none — you join your own nodes | n/a (external nodes) | location |
Azure uses an opaque secret, not an azure-sdk secret — the create tool rejects the typed one. Triton/Generic/Ephemeral location is a Control Plane location (e.g. aws-us-east-2), not a cloud region. A 12th provider, ephemeral, exists in the schema but has no create tool or CLI create — ignore it for real clusters. Other required fields (network/VPC, image, SSH keys, region enum) vary per provider; mcp__cpln__get_resource_schema (kind mk8s) and the create tool's own validation give the exact required set. Generic nodes you supply each need Linux kernel ≥ 5.4, ≥ 1 CPU / 512 MB, mutual connectivity, and SSH access.
version — required, no default, a closed enum of specific patch versions (currently 1.26.0 through 1.35.3). The set drifts as versions are added/retired; pull the live list from get_resource_schema, or just submit and let the typed tool's validation error name the valid values. Updating it is upgrade-only — mk8s rejects downgrades.nodePools (per provider) — give at least one to get worker capacity. Common fields are name/labels/taints; the rest are provider-specific. Each pool's minSize/maxSize drive the cluster autoscaler (set maxSize > minSize to allow scale-up).autoscaler (per provider) — defaults: expander: [most-pods], unneededTime: 10m, unreadyTime: 20m, utilizationThreshold: 0.7. Usually leave it.networking (per provider) — serviceNetwork (default 10.43.0.0/16) and podNetwork (default 10.42.0.0/16) must differ and are unmodifiable after creation; pick non-overlapping CIDRs up front. AWS and GCP additionally accept podNetwork: vpc.firewall — the API-server allow-list. It defaults to 0.0.0.0/0 (fully open), the opposite of the deny-by-default workload firewall; the create tool warns when you omit it. Restrict it to your admin CIDRs. Each rule is sourceCIDR (required) + description.spec.addOns is a map of toggles and small config objects. The schema is provider-agnostic — it does not block any add-on on any provider; an add-on only functions where the provider supports it (column below is the documented applicability).
| Add-on key | What it does | Providers |
|---|---|---|
dashboard | Kubernetes Dashboard UI | all |
headlamp | Headlamp web UI | all |
metrics | Prometheus metrics to Control Plane | all |
logs | pod logs + audit records to Control Plane | aws, hetzner, generic |
localPathStorage | local-path PVC provisioner | all |
registryMirror | P2P image-layer cache across nodes | all |
sysbox | run Docker/Kubernetes inside pods (stronger isolation) | all |
nvidia | NVIDIA GPU operator (taintGPUNodes) | GPU nodes |
kubevirt | run VMs on the cluster (needs nodeLocalDns + cpln.io/nodeType=vm nodes) | nodes with HW virtualization |
nodeLocalDns | per-node CoreDNS cache | all |
awsWorkloadIdentity | pods assume AWS IAM roles | aws, hetzner, generic |
awsECR | pull from private ECR | aws, hetzner, generic |
awsEFS | EFS volumes (roleArn required) | aws, hetzner, generic |
awsELB | AWS Load Balancer Controller (NLB/ALB) | aws |
azureWorkloadIdentity | pods get Azure AD identities | all |
azureACR | pull from private ACR (clientId required) | all |
byok | register this cluster as a BYOK location (addOns.byok.location is a //location/NAME link) | all |
Pick the provider's tool — mcp__cpln__create_mk8s_<provider> for any provider in the table above (e.g. create_mk8s_aws, create_mk8s_generic). Supply version and at least one node pool. Read with mcp__cpln__get_resource / list_resources (kind mk8s); delete with mcp__cpln__delete_resource (destructive — confirm the blast radius).
mcp__cpln__update_mk8s_<provider> is a merge-patch: send only what changes. Provided arrays (nodePools, firewall) replace the previous values wholesale — include the full set you want to keep. addOns merge-patches per key, so the update tool cannot disable a toggle add-on by passing false — remove one with cpln apply (set the key to null). region/networking and the provider/name are unmodifiable after creation.
Fallback (MCP unavailable, or CI/CD): author a YAML manifest from get_resource_schema (kind mk8s) and cpln apply --file mk8s.yaml.
There is no cpln mk8s create — create via the MCP tools above or cpln apply. The CLI owns the operations with no MCP equivalent:
| Command | Purpose |
|---|---|
cpln mk8s get [ref...] / query | read clusters |
cpln mk8s health <ref> | readiness status of the cluster |
cpln mk8s kubeconfig <ref> | generate a kubeconfig |
cpln mk8s dashboard <ref> | open the Kubernetes dashboard |
cpln mk8s join <ref> | join your own nodes (generic clusters and Hetzner dedicated-server pools) |
cpln mk8s eventlog <ref> | cluster event log (alias log) |
cpln mk8s clone <ref> | duplicate the spec (alias copy) |
cpln mk8s edit / patch / update / delete | edit YAML / patch metadata / --set / remove |
cpln mk8s update --set accepts only description, tags.<key>, and spec.version. For provider, node-pool, or add-on changes use update_mk8s_<provider>, cpln mk8s edit, or cpln apply.
For a cluster you already run yourself. All location create/install/uninstall steps are CLI-only — there is no MCP tool.
cpln location create --name CLUSTER — create the BYOK location entry.cpln location install CLUSTER — prints instructions for obtaining the install script (a signed kubectl apply command). The manifests carry sensitive tokens and are valid for about 5 minutes — run it promptly or regenerate.cpln-byok-agent deployment in the kube-system namespace to become ready: kubectl get pod -l app=cpln-byok-agent -n kube-system.Remove with cpln location uninstall CLUSTER and run the printed command on the cluster.
Prerequisites: a cluster within the three most recent Kubernetes minor releases; ≥ 2 nodes (3+ recommended); ≥ 2 CPU and 8 GB RAM per node (4 / 16 recommended); architecture amd64 or arm64; at least one nodegroup labeled cpln.io/nodeType=core; full node-to-node connectivity and egress; a working LoadBalancer controller (a Service of type LoadBalancer must obtain an IP); and no pre-installed service mesh — Control Plane installs its own Istio-based mesh.
Provider notes. GKE: first give the kube-dns Service IP (kubectl get svc -n kube-system kube-dns) to support; then, after Control Plane config is applied, scale kube-dns and kube-dns-autoscaler (in kube-system) to 0 replicas. EKS: enable the Amazon VPC CNI, kube-proxy, CoreDNS, and Amazon EBS CSI Driver add-ons. On-prem/airgapped: contact support.
Once the location exists, prefer MCP for the GVC and workload work — mcp__cpln__add_gvc_locations, then deploy and poll mcp__cpln__list_deployments. CLI fallback: cpln gvc add-location GVC --location CLUSTER.
mcp__cpln__get_resource (kind mk8s) until status.serverUrl is set, or cpln mk8s health CLUSTER; then cpln mk8s kubeconfig CLUSTER and kubectl get nodes to confirm worker capacity.kubectl get pod -l app=cpln-byok-agent -n kube-system), the location reports enabled, and a test workload targeting the location reaches ready in list_deployments.| Symptom | Cause and fix |
|---|---|
| Version create/update rejected | version must be in the closed enum, and updates are upgrade-only (no downgrade); read the valid set from get_resource_schema or the error. |
| Create rejected: secret type | Azure needs an opaque secret (not azure-sdk); GCP needs a gcp secret; Triton a keypair secret; token providers an opaque secret. Create it first. |
| Cluster reachable from anywhere | The API-server firewall defaulted to 0.0.0.0/0 — set it to your admin CIDRs. |
| Update wiped node pools / a rule | nodePools and firewall arrays replace wholesale on update — resend the full set. |
| Can't disable an add-on via update | The update tool ignores false toggles — remove the key with cpln apply (null). |
| Generic cluster has no workers | Generic nodes are external — run cpln mk8s join on each node. |
| BYOK agent never readies | Missing cpln.io/nodeType=core nodegroup, no working LoadBalancer, a pre-existing service mesh, or the install command expired (~5 min) — regenerate with cpln location install. |
| BYOK on GKE: DNS conflicts | Scale kube-dns and kube-dns-autoscaler to 0 and hand the kube-dns IP to support. |
mcp__cpln__create_mk8s_<provider> / update_mk8s_<provider> — create/merge-patch a cluster (mk8s profile)mcp__cpln__get_resource (kind secret) — verify the provider credential secret exists (created by the user)mcp__cpln__get_resource / list_resources / delete_resource (kind mk8s or location) — read/delete on any profilemcp__cpln__get_resource_schema (kind mk8s) — exact shape and the live version set before authoring YAMLmcp__cpln__add_gvc_locations / list_deployments — attach a BYOK location to a GVC and verify workloadsBYOK location create/install/uninstall and cpln mk8s kubeconfig|join|dashboard|health are CLI-only. In CI/CD, CPLN_TOKEN + cpln apply -f mk8s.yaml provisions a cluster headlessly.
| Skill | Use for |
|---|---|
| workload | deploying workloads onto the cluster once its location is in a GVC |
| cpln | the CLI behind mk8s and location (kubeconfig, join, install) and cpln apply |
| stateful-storage | volumesets and the BYOK volumeset storage-class settings |
| access-control | policies and grantable permissions on cluster/location objects |
| image | pull secrets behind the ECR/ACR add-ons |
| k8s-operator | the opposite direction — managing Control Plane resources from kubectl |