Kubernetes HPA弹性伸缩 helm包

# Prometheus [Prometheus](https://prometheus.io/), a [Cloud Native Computing Foundation](https://cncf.io/) project, is a systems and service monitoring system. It collects metrics from configured targets at given intervals, evaluates rule expressions, displays the results, and can trigger alerts if some condition is observed to be true. This chart bootstraps a [Prometheus](https://prometheus.io/) deployment on a [Kubernetes](http://kubernetes.io) cluster using the [Helm](https://helm.sh) package manager. ## Prerequisites - Kubernetes 1.19+ - Helm 3.7+ ## Get Repository Info ```console helm repo add prometheus-community https://prometheus-community.github.io/helm-charts helm repo update ``` _See [helm repository](https://helm.sh/docs/helm/helm_repo/) for command documentation._ ## Install Chart Starting with version 16.0, the Prometheus chart requires Helm 3.7+ in order to install successfully. Please check your `helm` release before installation. ```console helm install [RELEASE_NAME] prometheus-community/prometheus ``` _See [configuration](#configuration) below._ _See [helm install](https://helm.sh/docs/helm/helm_install/) for command documentation._ ## Dependencies By default this chart installs additional, dependent charts: - [alertmanager](https://github.com/prometheus-community/helm-charts/tree/main/charts/alertmanager) - [kube-state-metrics](https://github.com/prometheus-community/helm-charts/tree/main/charts/kube-state-metrics) - [prometheus-node-exporter](https://github.com/prometheus-community/helm-charts/tree/main/charts/prometheus-node-exporter) - [prometheus-pushgateway](https://github.com/walker-tom/helm-charts/tree/main/charts/prometheus-pushgateway) To disable the dependency during installation, set `alertmanager.enabled`, `kube-state-metrics.enabled`, `prometheus-node-exporter.enabled` and `prometheus-pushgateway.enabled` to `false`. _See [helm dependency](https://helm.sh/docs/helm/helm_dependency/) for command documentation._ ## Uninstall Chart ```console helm uninstall [RELEASE_NAME] ``` This removes all the Kubernetes components associated with the chart and deletes the release. _See [helm uninstall](https://helm.sh/docs/helm/helm_uninstall/) for command documentation._ ## Updating values.schema.json A [`values.schema.json`](https://helm.sh/docs/topics/charts/#schema-files) file has been added to validate chart values. When `values.yaml` file has a structure change (i.e. add a new field, change value type, etc.), modify `values.schema.json` file manually or run `helm schema-gen values.yaml > values.schema.json` to ensure the schema is aligned with the latest values. Refer to [helm plugin `helm-schema-gen`](https://github.com/karuppiah7890/helm-schema-gen) for plugin installation instructions. ## Upgrading Chart ```console helm upgrade [RELEASE_NAME] prometheus-community/prometheus --install ``` _See [helm upgrade](https://helm.sh/docs/helm/helm_upgrade/) for command documentation._ ### To 25.0 The `server.remoteRead[].url` and `server.remoteWrite[].url` fields now support templating. Allowing for `url` values such as `https://{{ .Release.Name }}.example.com`. Any entries in these which previously included `{{` or `}}` must be escaped with `{{ "{{" }}` and `{{ "}}" }}` respectively. Entries which did not previously include the template-like syntax will not be affected. ### To 24.0 Require Kubernetes 1.19+ Release 1.0.0 of the _alertmanager_ replaced [configmap-reload](https://github.com/jimmidyson/configmap-reload) with [prometheus-config-reloader](https://github.com/prometheus-operator/prometheus-operator/tree/main/cmd/prometheus-config-reloader). Extra command-line arguments specified via `configmapReload.prometheus.extraArgs` are not compatible and will break with the new prometheus-config-reloader. Please, refer to the [sources](https://github.com/prometheus-operator/prometheus-operator/blob/main/cmd/prometheus-config-reloader/main.go) in order to make the appropriate adjustment to the extra command-line arguments. ### To 23.0 Release 5.0.0 of the _kube-state-metrics_ chart introduced a separation of the `image.repository` value in two distinct values: ```console image: registry: registry.k8s.io repository: kube-state-metrics/kube-state-metrics ``` If a custom values file or CLI flags set `kube-state.metrics.image.repository`, please, set the new values accordingly. If you are upgrading _prometheus-pushgateway_ with the chart and _prometheus-pushgateway_ has been deployed as a statefulset with a persistent volume, the statefulset must be deleted before upgrading the chart, e.g.: ```bash kubectl delete sts -l app.kubernetes.io/name=prometheus-pushgateway -n monitoring --cascade=orphan ``` Users are advised to review changes in the corresponding chart releases before upgrading. ### To 22.0 The `app.kubernetes.io/version` label has been removed from the pod selector. Therefore, you must delete the previous StatefulSet or Deployment before upgrading. Performing this operation will cause **Prometheus to stop functioning** until the upgrade is complete. ```console kubectl delete deploy,sts -l app.kubernetes.io/name=prometheus ``` ### To 21.0 The Kubernetes labels have been updated to follow [Helm 3 label and annotation best practices](https://helm.sh/docs/chart_best_practices/labels/). Specifically, labels mapping is listed below: | OLD | NEW | |--------------------|------------------------------| |heritage | app.kubernetes.io/managed-by | |chart | helm.sh/chart | |[container version] | app.kubernetes.io/version | |app | app.kubernetes.io/name | |release | app.kubernetes.io/instance | Therefore, depending on the way you've configured the chart, the previous StatefulSet or Deployment need to be deleted before upgrade. If `runAsStatefulSet: false` (this is the default): ```console kubectl delete deploy -l app=prometheus ``` If `runAsStatefulSet: true`: ```console kubectl delete sts -l app=prometheus ``` After that do the actual upgrade: ```console helm upgrade -i prometheus prometheus-community/prometheus ``` ### To 20.0 The [configmap-reload](https://github.com/jimmidyson/configmap-reload) container was replaced by the [prometheus-config-reloader](https://github.com/prometheus-operator/prometheus-operator/tree/main/cmd/prometheus-config-reloader). Extra command-line arguments specified via configmapReload.prometheus.extraArgs are not compatible and will break with the new prometheus-config-reloader, refer to the [sources](https://github.com/prometheus-operator/prometheus-operator/blob/main/cmd/prometheus-config-reloader/main.go) in order to make the appropriate adjustment to the extra command-line arguments. ### To 19.0 Prometheus has been updated to version v2.40.5. Prometheus-pushgateway was updated to version 2.0.0 which adapted [Helm label and annotation best practices](https://helm.sh/docs/chart_best_practices/labels/). See the [upgrade docs of the prometheus-pushgateway chart](https://github.com/prometheus-community/helm-charts/tree/main/charts/prometheus-pushgateway#to-200) to see whats to do, before you upgrade Prometheus! The condition in Chart.yaml to disable kube-state-metrics has been changed from `kubeStateMetrics.enabled` to `kube-state-metrics.enabled` The Docker image tag is used from appVersion field in Chart.yaml by default. Unused subchart configs has been removed and subchart config is now on the bottom of the config file. If Prometheus is used as deployment the updatestrategy has been changed to "Recreate" by default, so Helm updates work out of the box. `.Values.server.extraTemplates` & `.Values.server.extraObjects` has been removed in favour of `.Values.extraManifests`, which can do the same. `.Values.server.enabled` has been removed as it's useless now that all components are created by subcharts. All files in `templates/se