Virtualization

Virtualization monitoring covers hypervisors, the virtual machines they host and the physical resources they share. This hub groups Netdata's solution pages for hypervisors such as Proxmox and ranked lists of monitoring tools for VMware.

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Solutions

Monitor Your Azure to Azure Local Migration

Unified monitoring for Azure to Azure Local (formerly Azure Stack HCI) migrations. Watch your Azure cloud resources and on-prem Azure Local infrastructure in a single dashboard before, during, and after migration.

Proxmox Monitoring With Real-Time Observability

Transform Proxmox monitoring with per-second visibility, AI insights, and 400+ intelligent alerts, without complexity or high costs. Book a demo now!

VMware Monitoring Software Without Centralized Data

Get per-second VMware monitoring, AI-powered troubleshooting, and predictable per-node pricing for complete visibility across hybrid clouds. Book a demo!

Guides

Guides overview 1 page

VMware vSphere Operations Guides

Practical guides for running, troubleshooting, and monitoring VMware vSphere and vCenter (vCSA) in production.

VMware vSphere Operations Guides 9 pages

Open the VMware vSphere Operations Guides hub

vCenter certificate expired: the STS signing cert outage nobody saw coming

Diagnose and recover from an expired STS signing certificate that takes down all vCenter authentication at once.

vCenter vpxd crash loop: the core service that keeps restarting

Operator reference for diagnosing and stopping vCenter vpxd crash loops, including heap exhaustion, ContainerView leaks, certificate expiry, and version-specific bugs.

vSphere 'Virtual machine disks consolidation is needed': clearing the warning without stunning the VM

How to clear vSphere's 'Virtual machine disks consolidation is needed' warning safely, including lock conflicts, free space requirements, and stun-free consolidation windows.

vSphere CPU ready time high (%RDY): VMs starved while the guest looks idle

Diagnose and fix high CPU ready time in vSphere, where VMs are starved for pCPU time while guest OS CPU utilization appears low.

vSphere HA 'Insufficient resources to satisfy configured failover level': admission control

Why vSphere HA blocks power-ons and vMotions with the failover level error, how admission control policies work, and how to fix it without losing the restart guarantee.

vSphere host swapping (SWCUR/SWW/s): hypervisor swap and the memory death spiral

Diagnose and resolve vSphere VMkernel swap activity (SWCUR, SWR/s, SWW/s) before the memory death spiral takes down every VM on the host.

vSphere memory ballooning (MCTLSZ): the host is reclaiming guest RAM

What non-zero MCTLSZ means, why ESXi reclaims guest memory, and how to stop sustained ballooning from degrading production VMs.

vSphere monitoring checklist: the signals every host, VM, and vCenter needs

A practical monitoring reference for vSphere covering the survival, operational, mature, and expert signals across ESXi hosts, VMs, and vCenter.

vSphere PSOD (purple screen of death): diagnosing an ESXi host crash

How to diagnose an ESXi purple screen of death: read the diagnostic screen, preserve the core dump, and correlate hardware and driver signals before the host reboots.

Academy

What Is A Bare Metal Server? Benefits & Use Cases

Bare Metal Hosting In Modern Infrastructure: Why It Still Matters

Container vs VM - Which Is Better Option For You

Decoding the differences between OS-level and hardware virtualization

Kernel Same-page Merging (KSM) Monitoring

Learn about monitoring & troubleshooting Kernel Same-page Merging (KSM), what metrics and why, and how to monitor KSM with Netdata. Find out more.

Open vSwitch Monitoring

Learn everything about monitoring & troubleshooting Open vSwitch, what metrics are important to monitor and why, and how to monitor Open vSwitch with Netdata.

vCenter Server Appliance Monitoring

Learn everything about monitoring & troubleshooting vCenter Server Appliance, what metrics are important to monitor and why, and how to monitor vCenter Server Appliance with Netdata.

VMware vCenter Server Monitoring

Learn everything about monitoring & troubleshooting VMware vCenter Server, what metrics are important to monitor and why, and how to monitor VMware vCenter Server with Netdata.

Case Studies

Streamlining VM Monitoring with Netdata

Achieving Operational Efficiency in Rapidly Changing Environments

Resources

Best VMware Monitoring Tools: 10 Ranked Picks for 2027

The best VMware monitoring tools in 2027: 10 options ranked on vSphere API depth, data granularity, alerting, and pricing shape with honest pros and cons.

Blog

Entropy In Cryptography: Key To Security & Randomness

Delving into the Randomness that Powers Our Systems

Monitor KSM performance with Netdata

Tracking Kernel Samepage Merging for Optimized Memory Use