MultiCluster: Implement krius spec describe-cluster to describe the stack

[girishg4t]

When user give krius spec describe-cluster it will describe the entire stack across multiple clusters and current state

[jeswinkninan]

@YachikaRalhan @hr1sh1kesh can you please let me know Cluster means the entire stack(Identifier as helm package) or is it like the individual resources that we got deployed?.

[hr1sh1kesh]

@jeswinkninan So, the describe-cluster is actually to describe all the components.
The way we are visualizing it (and we can refine it as well, so please suggest) is that the deployment is multi-cluster. We would want to run krius spec describe-cluster --file spec.yaml will describe all components in such manner
eg:
Cluster 1 (Thanos receiver)

• Details about it
  Cluster 2 (sidecar deployment / source cluster)
• Details about it. Resources, details etc.
  Cluster 3 (sidecar / source cluster)
• Details about it. Resources, details etc.

@YachikaRalhan you can pitch in with your idea too

[jeswinkninan]

@hr1sh1kesh okay sure, I will also work on this plan. Thank you sharing the details.

[jeswinkninan]

@hr1sh1kesh @YachikaRalhan Please find the sample expected output when describing the cluster using spec config file

krius spec describe-cluster -c /home/infracloud/test.yaml 
---------------------------------------------------------------------------
 Kubernetes Cluster Context: kind-cluster1
 Krius Cluster
 - Name: prometheus
 - Namespace: thanos1
 - Type: prometheus
 - ObjectConfiguration Name: bucketcluster2-new
 - Status: 
 - Workloads
   ->  Statefulsets: 
   ->  Deployment: 
   ->  Pod:
   -> Services:  
---------------------------------------------------------------------------
---------------------------------------------------------------------------
 Kubernetes Cluster Context: kind-cluster1
 Krius Cluster
 - Name: thanos-cluster1
 - Namespace: thanos1
 - Type: thanos
 - ObjectConfiguration Name: bucketcluster2-new
 - Status: 
 -  Workloads
    ->  Statefulsets: 
    ->  Deployment: 
    ->  Pod:
    -> Services:  
---------------------------------------------------------------------------

[jeswinkninan]

PR #46 will impletment the meta-data part from the spec-file, WIP for the workloads part

[jeswinkninan]

PR #51 will implements the status to describe-cluster