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Transcript of Sessions about to start – Get your rig on!. Ben Adamson @BWAdamson.
Sessions about to start – Get your rig on!
Monitor Virtualisation in System Centre5 things you must knowBen Adamson@BWAdamson
DCI308
“The task of the right eye is to peer into the telescope, while the left eye peers into the microscope.”
• Leonora Carrington
Session Objectives
• Understand useful metrics• Get the best from System Center• Other tips
Agenda
Options for virtualisation monitoring
Why use System Centre?
Context
Key metrics
Trending and Analysis
Capacity Planning
Knowledge/Automation
5
Monitoring options
• vCenter• Agent in the VM• SNMP• Syslog• VMware Web Service SDK (API)
• VMM • Agent in the VM • SNMP • Local tools • Task manager – Perf Counters -
Logman
• SCOM
VMware Hyper-V
System Center Operations Manager
Management Packs inject intelligence
Single Tool for Centralized Monitoring• Monitor with the
entire stack in mind• Key Benefits• Single View Across Platforms• Available Knowledge Base• Monitoring End-to-End• Determining Root Cause
Free Stuff
top5
Do something to join the dots#1
5 key concepts for monitoring virtualization1. You need a map• Track relationships & dependencies
2. Visualize as you virtualize• Dashboards & Reports. Context is key
3. Everybody has to share • Understand resource sharing and over-commitment
4. Look to the future• Use forecasting, trending, modelling
5. Knowledge is power• KB guidance is essential for lower time-to-resolution
Key events: Availability and configuration• Availability and Status • VMs
• Hosts• Storage • Network• Hardware
Demo
Maps in System Center
Visualize Key Metrics#2
Image Source: http://www.humcaff.org
5 Key concepts for monitoring virtualization1. You need a map
• Track relationships & dependencies
2. Visualize as you virtualize• Dashboards & Reports. Context is key
3. Everybody has to share • Understand resource sharing and over-commitment
4. Look to the future• Use forecasting, trending, modelling
5. Knowledge is power• KB guidance is essential for lower time-to-resolution
Demo
Visualisation in SCOM
Monitoring Hyper-V CPU Performance
• Measure guest operating system processor utilization [Hyper-V Hypervisor Logical Processor(_Total)\% Total Run Time] [\Hyper-V Hypervisor Virtual Processor(*)\%Guest Run Time]
• Less than 60% consumed = Healthy• 60% - 89% consumed = Monitor or Caution• 90% - 100% consumed = Critical, performance will be adversely affected
Task Manager?
Root Partition Child Partition Child Partition
HypervisorDevices Processors Memory
Server
IO stac
k
VSCs
VMbus
Child Partition
Server
IO stac
k
VSCs
VMbus
IO stac
k
Drivers
VSPs
VMbus
Why monitoring Host CPU counters are inaccurate?
Shared memory
Hyper-V Task Manager
Demo
Free Tool
Wee tip – CPU HotAdd in Hyper-V
%
Magical CPU HotAdd
Using reservations and limitsDemo
Monitoring Network Performance / Capacity• Test Network Latency – Ping• Test Packet Loss – pathping• Test Network File Transfers – Copy• Network Utilization Monitoring: \Network Interface(*)\Bytes
Total/sec• Less than 40% = Healthy
• 41%-64% = Monitor or Caution
• 65-100% = Critical, performance will be adversely affected
• Bottlenecks: \Network Interface(*)\Output Queue Length • 0 = Healthy
• 1-2 = Monitor or Caution
• Greater than 2 = Critical, performance will be adversely affected.
• MTU settings must be the same for ALL
Demo
Pathping Task
Memory monitoring• Dynamic memory• Aim high and hit low
• Numa vs Dynamic Memory
• Memory Balloon, <50% • Can cause high disk I/O in-VM due to
paging • Memory Swapping, = 0!
• Swapfile use is last resort for the Host
Key metrics : Storage• Storage space • Disk Pressure is a factor!
• Minimum free space >100 MB• At this point VM corruption will occur
• Track ‘garbage/unknown’ files• Also track Snapshots/Checkpoints• Relate VMs to Storage
Key metrics : Storage• Storage space• Storage Latency
• Kernel Latency within Host ~0ms• Device Latency on backend <20ms• Find the hotspots of high I/O
• Relate VMs to Datastores
StorageReporting
Demo
Wee Bonus Tip –
Rebrand reports
Everyone shares the hot-tub
#3
Image Source: http://www.moviebreak.de/
5 Key concepts for monitoring virtualization1. You need a map
• Track relationships & dependencies
2. Visualize as you virtualize• Dashboards & Reports. Context is key
3. Everybody has to share • Understand resource sharing and over-commitment
4. Look to the future• Use forecasting, trending, modelling
5. Knowledge is power• KB guidance is essential for lower time-to-resolution
Key metrics : Over-commitment
• CPU Pressure • # of running VM vCPU per Host Core• High ratio can impact vSphere CPU Scheduler• Absolute maximum = 25• Best practice 4 - 8
Key metrics : Over-commitment
• CPU Pressure• Memory Pressure
• Memory allocated versus physical RAM available• vSphere shares very efficiently (TPS) – but:• High values can cause ballooning, or even swapping
Key metrics : Over-commitment
• CPU Pressure• Memory Pressure• Disk Pressure
• Disk space allocated versus capacity• No real performance impact – but:• If VMs start to use their allocation – physical capacity can fill quickly
Demo
Hot Tub
A crystal-ball is awfully handy#4
Image Source: http://www.memecenter.com
5 Key concepts for monitoring virtualization1. You need a map
• Track relationships & dependencies
2. Visualize as you virtualize• Dashboards & Reports. Context is key
3. Everybody has to share • Understand resource sharing and over-commitment
4. Look to the future• Use forecasting, trending, modelling
5. Knowledge is power• KB guidance is essential for lower time-to-resolution
Key Factors• Pressure metrics• Capacity• Alert trending• ‘What if’ and ‘where’?
Demo
Capacity planning and forecasting
Knowledgeis Power#5
Image Source: http://yuegroup.ust.hk
5 Key concepts for monitoring virtualization1. You need a map
• Track relationships & dependencies
2. Visualize as you virtualize• Dashboards & Reports. Context is key
3. Everybody has to share • Understand resource sharing and over-commitment
4. Look to the future• Use forecasting, trending, modelling
5. Knowledge is power• KB guidance is essential for lower time-to-resolution
Knowledge is power
• SCOM kb guidance is vital• Mean-time-to-resolution• Proactive automated management
Demo
Knowledge Base
Wee Bonus Tip
VMware Orchestration
Q&A
5
Veeam Management Pack for System Center
veeam.com/mp
Learning
Microsoft Certification & Training Resources
www.microsoft.com/learning
TechNet
Resources
Sessions on Demand
http://channel9.msdn.com/Events/TechEd
Resources for IT Professionals
http://microsoft.com/technet
Related content
Live demos at the booth
Find Me Later At...the booth
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