由于生产环境，系统内消耗的内存频繁增长，vmware vsphere 的虚拟化可以在不停机的情况下加内存和cpu资源，通过vCenter的API动态调整vmware vsphere 虚拟机内存大小，立即生效的，而基于kvm的虚拟机要关机再开机才能生效，从监控上看内存的资源不够，cpu资源几本不会饱和使用。
param(
[Parameter(Mandatory=$true)]
[string]$ip,
[Parameter(Mandatory=$true)]
[int]$memorySizeGB
)
function ConnectToVCenter {
param(
[Parameter(Mandatory=$true)]
[string]$server,
[Parameter(Mandatory=$true)]
[string]$user,
[Parameter(Mandatory=$true)]
[string]$password
)
try {
Connect-VIServer -Server $server -User $user -Password $password
} catch {
Write-Error "Failed to connect to vCenter: $_"
exit 1
}
}
function Get-VMByIP {
param(
[Parameter(Mandatory=$true)]
[string]$ip
)
$vms = Get-VM
foreach($vm in $vms) {
$vmIPs = (Get-VMGuest -VM $vm).IPAddress
if($ip -in $vmIPs) {
return $vm
}
}
return $null
}
function Set-VMResources {
param(
[Parameter(Mandatory=$true)]
[VMware.VimAutomation.ViCore.Impl.V1.VM.UniversalVirtualMachineImpl]$vm,
[Parameter(Mandatory=$true)]
[int]$memorySizeGB
)
try {
$memorySizeMB = $memorySizeGB * 1024
Set-VM -VM $vm -MemoryMB $memorySizeMB -Confirm:$false
} catch {
Write-Error "Failed to update VM resources: $_"
}
}
# Main script starts here
ConnectToVCenter -server 'your_vcenter_server' -user 'your_username' -password 'your_password'
$vm = Get-VMByIP -ip $ip
if($vm -eq $null) {
Write-Error "No VM found with IP address: $ip"
exit 1
}
Set-VMResources -vm $vm -memorySizeGB $memorySizeGB使用
对ip 10.17.214.18设置 10GB内存
pwsh updateMemSize.ps1 10.17.214.18 10
资源只能增，不能减
