...
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. It gets the IP address for each host from the IP address configmap created by the BPA controller when it was installing the cluster
Draft Software CRD
| Code Block | ||
|---|---|---|
| ||
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 |
...
| Code Block |
|---|
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
...
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 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 IP address of configmap the BPA operator creates;
| Code Block | ||||
|---|---|---|---|---|
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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
|