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Hypervisor Agnostic DRS in CloudStack - Brief overview & demo - Vishesh Jindal - ShapeBlue

ShapeBlue
ShapeBlue
ShapeBlueOperations and Service Delivery at ShapeBlue

Vishesh has been working on the feature hypervisor-agnostic DRS in Cloudstack. He briefly overviews the implementation and discusses the algorithms currently available and how they can improve resource allocation and workload balancing in virtualized environments. Additionally, Vishesh showcases a live demo of hypervisor agnostic DRS in action, highlighting its capabilities and effectiveness. ----------------------------------------- The CloudStack Collaboration Conference 2023 took place on 23-24th November. The conference, arranged by a group of volunteers from the Apache CloudStack Community, took place in the voco hotel, in Porte de Clichy, Paris. It hosted over 350 attendees, with 47 speakers holding technical talks, user stories, new features and integrations presentations and more.

Hypervisor Agnostic DRS in CloudStack - Brief overview & demo - Vishesh Jindal - ShapeBlue

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Hypervisor
Agnostic DRS
By Vishesh Jindal
Twitter - @visheshj92
Email - vishesh.jindal@shapeblue.com
About Me
• Software Engineer @ ShapeBlue
• Worked as a Backend & Infrastructure engineer
in the past
• Experience managing and administering
kubernetes, AWS, PostgreSQL in production
• Passionate about cloud infrastructure, security,
and AI
Agenda
• What is DRS?
• Algorithms
• Configuring DRS for a cluster
• Peek into the implementation details
• Demo
• Questions
What is DRS?
•Upcoming feature in CloudStack 4.19
•Hypervisor agnostic
•Rebalances VMs across a cluster
•Assists in power savings
•Builds on top of existing Live Migration feature
Algorithm - Balanced
Algorithm – Condensed

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Hypervisor Agnostic DRS in CloudStack - Brief overview & demo - Vishesh Jindal - ShapeBlue

  • 1. Hypervisor Agnostic DRS By Vishesh Jindal Twitter - @visheshj92 Email - vishesh.jindal@shapeblue.com
  • 2. About Me • Software Engineer @ ShapeBlue • Worked as a Backend & Infrastructure engineer in the past • Experience managing and administering kubernetes, AWS, PostgreSQL in production • Passionate about cloud infrastructure, security, and AI
  • 3. Agenda • What is DRS? • Algorithms • Configuring DRS for a cluster • Peek into the implementation details • Demo • Questions
  • 4. What is DRS? •Upcoming feature in CloudStack 4.19 •Hypervisor agnostic •Rebalances VMs across a cluster •Assists in power savings •Builds on top of existing Live Migration feature
  • 7. Balanced • Balances the load across hosts in a cluster • Higher power consumption • In case of a host failure, minimal impact on running VMs • Ideal for production environments • Less likely to cause contention issues • Like VMWare DRS Condensed • Reduces the number of hosts in use • Lower power consumption • In case of a host failure, huge impact on running VMs • Ideal for staging/testing environments • More likely to cause contention issues • Like VMWare DPS
  • 8. Peek into the implementation Iteration ← 0 while needsDRS() AND Iteration < MaxIterations do BestMigration ← NULL MaxImprovement ← 0 foreach VM v in the cluster do foreach compatible destination host h do improvement ← getMetrics() if improvement > MaxImprovement then BestMigration ← migrate v to h MaxImprovement ← improvement if BestMigration is NULL then break Perform BestMigration Iteration++ *Actual implementation is a little different
  • 9. Configuring/Executing DRS for a cluster Parameter Default Description drs.algorithm balanced DRS algorithm to be executed on the cluster. Available algorithms - condensed, balanced. drs.imbalance 0.4 Percentage (as a value between 0.0 and 1.0) of imbalance allowed in the cluster. 1.0 means no imbalance is allowed and 0.0 means imbalance is allowed. drs.metric memory The cluster imbalance metric to use when considering the imbalance in cluster. Possible values are memory, cpu. drs.max. migrations 50 Maximum number of instances to be migrated in one DRS execution.
  • 10. Configuring/Executing DRS for a cluster Parameter Default Description drs.automatic. enable false Enable/disable automatic DRS on a cluster. drs.automatic. interval 60 The interval in minutes after which a periodic background thread will schedule DRS for a cluster. drs.plan. expire.interval 30 The interval in days after which the DRS events will be cleaned up from the database.
  • 11. Demo
  • 13. Merci