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Remove kubernetesServicesVersion from upgrade RFC.

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Tracking two sets of versions would require us to have two versioning patterns
inside the Helm charts. It also complicates
the decision making for the user.
This commit is contained in:
Otto Bittner 2022-11-22 13:59:38 +01:00
parent 0b85709dd2
commit 594b43e629
1 changed files with 13 additions and 7 deletions
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20
rfc/updates.md
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@ -173,8 +173,7 @@ we should add comments to those fields who will not update the cluster.
```yaml
kubernetesVersion: 1.24.3
kubernetesServicesVersion: 1.24.5 # Bundled Kubernetes components (Autoscaler, CloudControllerManager, CloudNodeManager, GCP Guest Agent, Konnectivity)
microserviceVersion: 2.2.0 # or constellationVersion: (KMS, JoinService, NodeMaintainanceOperator, NodeOperator, OLM, Verification, Cilium)
microserviceVersion: 2.2.0 # All services deployed as part of installing Constellation
provider:
azure:
image: /communityGalleries/ConstellationCVM-b3782fa0-0df7-4f2f-963e-fc7fc42663df/images/constellation/versions/2.3.0
@ -185,8 +184,15 @@ provider:
Note that:
* `microserviceVersion` 2.2.0 contains components which are all released in version 2.2.0
* `kubernetesServicesVersion` 1.24.5 could contain Autoscaler 1.24.2, CCM 1.24.8 since their patch versions are not in sync with Kubernetes. Moreover, those component versions will be bundled by us. Think: public lookup table from `kubernetesServicesVersion` -> component version.
* `microserviceVersion` is a bundle of component versions which can be conceptually separated into two groups:
* Services that are versioned based on the constellation version: : KMS, JoinService, NodeMaintainanceOperator, NodeOperator, OLM, Verification, Cilium (for now).
There only exists one version of each service and it is compatible with all Kubernetes versions currently supported by Constellation.
The deployment and image version are the same for all three Kubernetes versions.
* Services that are versioned based on the kubernetes version: Autoscaler, CloudControllerManager, CloudNodeManager, GCP Guest Agent, Konnectivity.
There exist one version for each Kubernetes version.
The deployment is the same for all three Kuberenetes version, but the image is specific to the version.
Images are specified by the CLI upon loading the Helm chart, by inspeciting `constellation-conf.yaml`.
Deployment variations could be introduced into the Helm charts if they become necessary in the future.
When `constellation upgrade apply` is called the CLI needs to perform the following steps:
@ -194,11 +200,11 @@ When `constellation upgrade apply` is called the CLI needs to perform the follow
2. create a new `k8s-components-1.24.3` ConfigMap with the corresponding URLs and hashes from the lookup table in the CLI
3. update the measurements in the `join-config` ConfigMap
4. update the Kubernetes version and VM image in the `nodeimage` CRD
5. update Cilium + Constellation microservices
5. update Constellation microservices
The actual update in step 2. and 3. will be handled by the node-operator inside Constellation. Step 4. will be done via client side helm deployments.
The actual update in step 2. and 3. will be handled by the node-operator inside Constellation. Step 5. will be done via client side helm deployments.
Since the actual Kubernetes components and Constellation microservice versions are hidden, we will show the user for the actual changes taking place. We also print a warning to back up any important components when the upgrade necessitates a node replacement, i.e. on Kubernetes and VM image upgrades.
Since the service versions bundled inside a `microserviceVersion` are hidden, the CLI will print the changes taking place. We also print a warning to back up any important components when the upgrade necessitates a node replacement, i.e. on Kubernetes and VM image upgrades.
```bash
$ constellation upgrade apply