[GEP-19] Introduce prometheus-operator in garden and seed clusters (g…

…ardener#9067) * Add `prometheus-operator` image to image vector * Add basic `prometheusoperator` component package * `ServiceAccount` * `Service` * `Deployment` * `VerticalPodAutoscaler` * RBAC * CRDs * [operator] `Garden` controller deploys `prometheus-operator` * [gardenlet] `Seed` controller deploys `prometheus-operator`
jfortin-sap · Jan 26, 2024 · 96335a6 · 96335a6
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diff --git a/docs/concepts/operator.md b/docs/concepts/operator.md
@@ -139,6 +139,7 @@ The reconciler also manages a few observability-related components (more planned
 - `kube-state-metrics`
 - `plutono`
 - `vali`
+- `prometheus-operator`
 
 It is also mandatory to provide an IPv4 CIDR for the service network of the virtual cluster via `.spec.virtualCluster.networking.services`.
 This range is used by the API server to compute the cluster IPs of `Service`s.
@@ -242,6 +243,7 @@ In addition, there are a few observability components:
 - `vali`
 - `plutono`
 - `kube-state-metrics`
+- `prometheus-operator`
 
 As all of these components are managed by `gardener-operator` in this scenario, the `gardenlet` just skips them.
 

diff --git a/docs/development/priority-classes.md b/docs/development/priority-classes.md
@@ -19,27 +19,27 @@ When using the `gardener-operator` for managing the garden runtime and virtual c
 
 ### `PriorityClass`es for Garden Control Plane Components
 
-| Name                              | Priority  | Associated Components (Examples)                                                                                |
-|-----------------------------------|-----------|-----------------------------------------------------------------------------------------------------------------|
-| `gardener-garden-system-critical` | 999999550 | `gardener-operator`, `gardener-resource-manager`, `istio`                                                       |
-| `gardener-garden-system-500`      | 999999500 | `virtual-garden-etcd-events`, `virtual-garden-etcd-main`, `virtual-garden-kube-apiserver`, `gardener-apiserver` |
-| `gardener-garden-system-400`      | 999999400 | `virtual-garden-gardener-resource-manager`, `gardener-admission-controller`                                     |
-| `gardener-garden-system-300`      | 999999300 | `virtual-garden-kube-controller-manager`, `vpa-admission-controller`, `etcd-druid`, `nginx-ingress-controller`  |
-| `gardener-garden-system-200`      | 999999200 | `vpa-recommender`, `vpa-updater`, `hvpa-controller`, `gardener-scheduler`, `gardener-controller-manager`        |
-| `gardener-garden-system-100`      | 999999100 | `fluent-operator`, `fluent-bit`, `gardener-metrics-exporter`, `kube-state-metrics`, `plutono`, `vali`           |
+| Name                              | Priority  | Associated Components (Examples)                                                                                             |
+|-----------------------------------|-----------|------------------------------------------------------------------------------------------------------------------------------|
+| `gardener-garden-system-critical` | 999999550 | `gardener-operator`, `gardener-resource-manager`, `istio`                                                                    |
+| `gardener-garden-system-500`      | 999999500 | `virtual-garden-etcd-events`, `virtual-garden-etcd-main`, `virtual-garden-kube-apiserver`, `gardener-apiserver`              |
+| `gardener-garden-system-400`      | 999999400 | `virtual-garden-gardener-resource-manager`, `gardener-admission-controller`                                                  |
+| `gardener-garden-system-300`      | 999999300 | `virtual-garden-kube-controller-manager`, `vpa-admission-controller`, `etcd-druid`, `nginx-ingress-controller`               |
+| `gardener-garden-system-200`      | 999999200 | `vpa-recommender`, `vpa-updater`, `hvpa-controller`, `gardener-scheduler`, `gardener-controller-manager`                     |
+| `gardener-garden-system-100`      | 999999100 | `fluent-operator`, `fluent-bit`, `gardener-metrics-exporter`, `kube-state-metrics`, `plutono`, `vali`, `prometheus-operator` |
 
 ## Seed Clusters
 
 ### `PriorityClass`es for Seed System Components
 
-| Name                               | Priority  | Associated Components (Examples)                                                                                                                                                                      |
-|------------------------------------|-----------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
-| `gardener-system-critical`         | 999998950 | `gardenlet`, `gardener-resource-manager`, `istio-ingressgateway`, `istiod`                                                                                                                            |
-| `gardener-system-900`              | 999998900 | Extensions, `reversed-vpn-auth-server`                                                                                                                                                                |
-| `gardener-system-800`              | 999998800 | `dependency-watchdog-endpoint`, `dependency-watchdog-probe`, `etcd-druid`, `(auditlog-)mutator`, `vpa-admission-controller`                                                                           |
-| `gardener-system-700`              | 999998700 | `auditlog-seed-controller`, `hvpa-controller`, `vpa-recommender`, `vpa-updater`                                                                                                                       |
-| `gardener-system-600`              | 999998600 | `aggregate-alertmanager`, `alertmanager`, `fluent-operator`, `fluent-bit`, `plutono`, `kube-state-metrics`, `nginx-ingress-controller`, `nginx-k8s-backend`, `prometheus`, `vali`,  `seed-prometheus` |
-| `gardener-reserve-excess-capacity` | -5        | `reserve-excess-capacity` ([ref](https://github.com/gardener/gardener/pull/6135))                                                                                                                     |
+| Name                               | Priority  | Associated Components (Examples)                                                                                                                                                                                             |
+|------------------------------------|-----------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| `gardener-system-critical`         | 999998950 | `gardenlet`, `gardener-resource-manager`, `istio-ingressgateway`, `istiod`                                                                                                                                                   |
+| `gardener-system-900`              | 999998900 | Extensions, `reversed-vpn-auth-server`                                                                                                                                                                                       |
+| `gardener-system-800`              | 999998800 | `dependency-watchdog-endpoint`, `dependency-watchdog-probe`, `etcd-druid`, `(auditlog-)mutator`, `vpa-admission-controller`                                                                                                  |
+| `gardener-system-700`              | 999998700 | `auditlog-seed-controller`, `hvpa-controller`, `vpa-recommender`, `vpa-updater`                                                                                                                                              |
+| `gardener-system-600`              | 999998600 | `aggregate-alertmanager`, `alertmanager`, `fluent-operator`, `fluent-bit`, `plutono`, `kube-state-metrics`, `nginx-ingress-controller`, `nginx-k8s-backend`, `prometheus-operator`, `prometheus`, `vali`,  `seed-prometheus` |
+| `gardener-reserve-excess-capacity` | -5        | `reserve-excess-capacity` ([ref](https://github.com/gardener/gardener/pull/6135))                                                                                                                                            |
 
 ### `PriorityClass`es for Shoot Control Plane Components