Collect information for TO sizing

collect-k8s-data.sh

#!/bin/bash

# Get the number of nodes
num_nodes=$(kubectl get nodes --no-headers | wc -l)
echo "Number of nodes: $num_nodes"

# Get the number of pods
num_pods=$(kubectl get pods --all-namespaces --no-headers | wc -l)
echo "Number of pods: $num_pods"

# Get the sum of all containers in all pods
sum_containers=$(kubectl get pods --all-namespaces -o jsonpath='{.items[*].spec.containers[*]}' | wc -w)
echo "Sum of all containers in all pods: $sum_containers"

# Get the number of namespaces
num_namespaces=$(kubectl get namespaces --no-headers | wc -l)
echo "Number of namespaces: $num_namespaces"

collect-vcenter-data.ps

$VCServer = 'vcenter.local'
$Username = 'administrator@vsphere.local'
$Password = 'password'
Connect-VIServer -Server $VCServer -User $Username -Password $Password

# Collect ESXi Host Information
$hosts = Get-VMHost
$totalHosts = $hosts.Count
$totalCPUs = ($hosts | Measure-Object -Property NumCpu -Sum).Sum
$totalDisks = ($hosts | Get-VMHostStorage -Refresh | Measure-Object -Property ScsiLun).Sum
$totalNICs = ($hosts | Get-VMHostNetworkAdapter | Measure-Object).Count
$totalStorageAdapters = ($hosts | Get-VMHostHba | Measure-Object).Count

# Collect VM Information
$vms = Get-VM
$totalVMs = $vms.Count
$totalVMDisks = ($vms | Get-HardDisk | Measure-Object).Count
$totalVMCPUs = ($vms | Measure-Object -Property NumCpu -Sum).Sum
$totalVMNICs = ($vms | Get-NetworkAdapter | Measure-Object).Count

# Display the information
Write-Host "Total ESXi Hosts: $totalHosts"
Write-Host "Sum CPUs/Host: $totalCPUs"
Write-Host "Sum Disks/Host: $totalDisks"
Write-Host "Sum NICs/Host: $totalNICs"
Write-Host "Sum Storage Adapters/Host: $totalStorageAdapters"
Write-Host "Total VMs: $totalVMs"
Write-Host "Sum Disks/VM: $totalVMDisks"
Write-Host "Sum CPUs/VM: $totalVMCPUs"
Write-Host "Sum NICs/VM: $totalVMNICs"

# Disconnect from the vCenter Server
Disconnect-VIServer -Server $VCServer -Confirm:$false