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When the Software CR is created and the Kubernetes cluster has successfully been installed, the BPA controller looks up the matching software custom resource (cluster name in the Software CR must match cluster name in the provisioning CR), gets the software list and then installs the software (and/or updates) that are defined in the hosts via SSH. Draft It gets the IP address for each host from the IP address configmap created by the BPA controller when it was installing the cluster
Software CRD
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apiVersion: apiextensions.k8s.io/v1beta1 kind: CustomResourceDefinition metadata: name: software.bpa.akraino.org spec: group: bpa.akraino.org names: kind: software listKind: softwarerList plural: software singular: software shortNames: - sw scope: Namespaced subresources: status: {} validation: openAPIV3Schema: properties: apiVersion: description: type: string kind: description: type: string metadata: type: object spec: type: object status: type: object version: v1alpha1 versions: - name: v1alpha1 served: true storage: true |
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package v1alpha1 import ( metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" ) // EDIT THIS FILE! THIS IS SCAFFOLDING FOR YOU TO OWN! // NOTE: json tags are required. Any new fields you add must have json tags for the fields to be serialized. // SoftwareSpec defines the desired state of Software // +k8s:openapi-gen=true type SoftwareSpec struct { // INSERT ADDITIONAL SPEC FIELDS - desired state of cluster // Important: Run "operator-sdk generate k8s" to regenerate code after modifying this file // Add custom validation using kubebuilder tags: https://book-v1.book.kubebuilder.io/beyond_basics/generating_crd.html //MasterSoftware map[string][]interface{} `json:"masterSoftware,omitempty"` MasterSoftware []interface{} `json:"masterSoftware,omitempty"` WorkerSoftware []interface{} `json:"workerSoftware,omitempty"` //WorkerSoftware map[string][]interface{} `json:"workerSoftware,omitempty"` } // SoftwareStatus defines the observed state of Software // +k8s:openapi-gen=true type SoftwareStatus struct { // INSERT ADDITIONAL STATUS FIELD - define observed state of cluster // Important: Run "operator-sdk generate k8s" to regenerate code after modifying this file // Add custom validation using kubebuilder tags: https://book-v1.book.kubebuilder.io/beyond_basics/generating_crd.html } // +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object // Software is the Schema for the softwares API // +k8s:openapi-gen=true // +kubebuilder:subresource:status type Software struct { metav1.TypeMeta `json:",inline"` metav1.ObjectMeta `json:"metadata,omitempty"` Spec SoftwareSpec `json:"spec,omitempty"` Status SoftwareStatus `json:"status,omitempty"` } // +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object // SoftwareList contains a list of Software type SoftwareList struct { metav1.TypeMeta `json:",inline"` metav1.ListMeta `json:"metadata,omitempty"` Items []Software `json:"items"` } func init() { SchemeBuilder.Register(&Software{}, &SoftwareList{}) } |
MasterSoftware : This corresponds to the masterSoftware section in the sample CR file below. It has a map list of interfaces containing the various software with or without required versions. WorkerSoftware: This corresponds to the workerSoftware section in the sample CR file below. It has a map containing the various software with or without required versions. , if the version is specified, the item is a map corresponding to software name and version, if it is not the item is a string that has the software name
WorkerSoftware: It is also as described in the masterSoftware
Sample Software CR YAML files
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In order for the BPA controller to install the software specified in the software CR via SSH, it would need to have saved the IP address of addresses of the hosts in that cluster. The BPA controller creates a configmap that stores the hosts in a cluster and their corresponding IP address. Below is an example of the configmap the BPA operator creates;
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apiVersion: v1
data:
MASTER_master-1: 192.168.30.20
WORKER_worker-1: 192.168.30.65
kind: ConfigMap
metadata:
creationTimestamp: "2019-09-24T21:03:32Z"
labels:
cluster: cluster-abc
name: cluster-abc-configmap
namespace: default
resourceVersion: "8519202"
selfLink: /api/v1/namespaces/default/configmaps/cluster-abc-configmap
uid: c426f1fc-df0e-11e9-a107-00219ba0c77a
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