NexoConnectionPooler
:::tip Reconciled
The selected Operator registers this Kind. Runtime effect still requires a valid reference from the owning Proxy graph and a compatible runtime component.
:::
This page documents the 0.2.0 Private Preview. Schema acceptance, Operator reconciliation, and runtime enforcement are separate claims; the status above is authoritative.
API identity
| Property | Value |
|---|---|
| Kind | NexoConnectionPooler |
| API group | nexo.io |
| Version | v1alpha1 |
| Resource | nexoconnectionpoolers |
| Short name | ncp |
| Scope | Namespaced |
| Operator support | Reconciled |
Purpose and relationships
Declares standalone connection-pool settings.
It has runtime effect only when a NexoPipeline referenced by a NexoProxy includes this object in a compatible phase and the selected Operator/runtime bundle supports the contract.
Spec field reference
The table is derived from the installed Nexo Edge CRD OpenAPI schema. “Not declared” means the schema publishes no default. A missing schema description is reported explicitly rather than inferred from implementation.
| Field | Type | Required | Default | Schema description |
|---|---|---|---|---|
spec.mode | string | Yes | Not declared | No description is declared in the CRD schema. Allowed values: transaction, session, operation. |
spec.maxServerConnections | integer (int32) | No | Not declared | No description is declared in the CRD schema. Minimum: 0. |
spec.minIdleConnections | integer (int32) | No | Not declared | No description is declared in the CRD schema. Minimum: 0. |
spec.maxConnectionAge | string | No | Not declared | No description is declared in the CRD schema. |
spec.idleTimeout | string | No | Not declared | No description is declared in the CRD schema. |
spec.queueTimeout | string | No | Not declared | No description is declared in the CRD schema. |
spec.queueSize | integer (int32) | No | Not declared | No description is declared in the CRD schema. Minimum: 0. |
spec.healthCheckInterval | string | No | Not declared | No description is declared in the CRD schema. |
spec.pinTimeout | string | No | Not declared | No description is declared in the CRD schema. |
Status fields and conditions
| Field | Type | Required | Default | Schema description |
|---|---|---|---|---|
status.ready | boolean | No | Not declared | No description is declared in the CRD schema. |
status.observedGeneration | integer (int64) | No | Not declared | No description is declared in the CRD schema. |
status.configHash | string | No | Not declared | No description is declared in the CRD schema. |
status.conditions | array<object> | No | Not declared | No description is declared in the CRD schema. |
status.conditions[].type | string | No | Not declared | No description is declared in the CRD schema. |
status.conditions[].status | string | No | Not declared | No description is declared in the CRD schema. |
status.conditions[].reason | string | No | Not declared | No description is declared in the CRD schema. |
status.conditions[].message | string | No | Not declared | No description is declared in the CRD schema. |
status.conditions[].lastTransitionTime | string (date-time) | No | Not declared | No description is declared in the CRD schema. |
status.conditions[].observedGeneration | integer (int64) | No | Not declared | No description is declared in the CRD schema. |
A Ready or configHash value proves that the Operator accepted/hashed the object; it does not by itself prove runtime execution or policy enforcement.
Reconciliation and watch behavior
The registered controller validates the resource and records status. Data-path changes are applied only when the relevant NexoProxy controller rebuilds or reloads the owning graph.
The pinned NexoProxy watch maps this resource to a Proxy only through an ownerReference whose apiVersion is nexo.io/v1alpha1 and kind is NexoProxy. Without that ownership link, editing the component does not enqueue the Proxy.
Runtime execution effect
A compatible runtime would manage reusable upstream MongoDB connections.
Example
Use placeholders and validate in a non-production namespace first. For schema-only or ineffective kinds, this example is for schema inspection only and must not be used as evidence of enforcement.
apiVersion: nexo.io/v1alpha1
kind: NexoConnectionPooler
metadata:
name: <pooler-name>
namespace: <namespace>
spec:
mode: session
maxServerConnections: 20
Update and reconciliation caveats
- Apply component and pipeline changes before expecting the owning NexoProxy graph to change.
- Check metadata.generation, status.observedGeneration when present, and the owning Proxy graphRevision/appliedRevision after every update.
- A successful kubectl apply proves only schema admission; inspect Operator conditions, generated configuration, rollout state, and runtime behavior separately.
Release-specific limitations
- The API is v1alpha1 and has no conversion webhook or second served version.
- The CRD schema is retained by Helm and can outlive the Operator release that installed it.
- This immutable page describes Nexo Edge 0.2.0 with Operator 008260c and Proxy 7064b41; later behavior must not be inferred.
Inspect with kubectl
kubectl get nexoconnectionpoolers --namespace <namespace>
kubectl describe nexoconnectionpoolers <name> --namespace <namespace>
kubectl get nexoconnectionpoolers <name> --namespace <namespace> -o yaml
kubectl get crd nexoconnectionpoolers.nexo.io -o yaml
For resources participating in a Proxy graph, also inspect:
kubectl get nexoproxy <proxy-name> --namespace <namespace> \
-o jsonpath='{.status.phase}{" graph="}{.status.graphRevision}{" applied="}{.status.appliedRevision}{"\n"}'
kubectl get nexopipeline <pipeline-name> --namespace <namespace> -o yaml