Virtualization for autonomous administration of servers

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Virtualization for autonomous administration of servers

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PlanClient’s Specifications

Context

Objectives

Tools

The Xen Attitune ProjectRequirements

Architecture

Tests

Project ManagementProgress Report

3

Client’s Specifications

4

Context

Context Servers Cost Electrical Consumption Distributed Servers

Metric Server reservation price Per server electrical consumption

Network load and servers distances

Goal

Minimizing costs =

Bringing together low CPU consumers

Minimizing electrical consumption

= Shutting down unused

physical machines

Minimizing communication times

= Bringing together highly communicating servers

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ContextVi

rtual

Mac

hine

1

Virtu

al M

achi

ne 2

ExpansionCriteria

ShrinkCriteria

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ObjectivesS

erve

r 1

Ser

ver 2

Request number rising

Request number reduction

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Objectives

Xen Paravirtualization Tools

TUNe

NFS

Illustrative Scenario

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Hardware

Domain 0

Abstraction LayerXen Control

InterfaceModified Drivers

User Applications

Xen Control Software

ToolsXen Architecture Overview

Xen Hypervisor

User Domain 1

Abstraction Layer

Modified Drivers

User Applications

User Domain 2

Abstraction Layer

Modified Drivers

User Applications

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Dom0-1

DomU

Dom0-2

xm m

igra

te

Filesystem

ToolsXen Migration

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ToolsTUNe Architecture

Fractal Components

Tune Wrapper

Stubs

Legacy Software

TUNe Wrappers

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ToolsTUNe Diagrams

S2

+wrapper : String = S2.xml+legacyFile : String = S2.tgz+host-family : String = localhost

1

1

S1


event

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The Xen Attitune Project

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The Xen Attitune ProjectPreliminary study

Requirements

Architecture

Tests

Implementation

Tests

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RequirementsPreliminary study

Requirements

Architecture

Tests

Implementation

Tests

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RequirementsSpecification example

R3

Requirement Formulation

Calculation results will not be affected by virtual machine migration.

RationalMigration should keep virtual machine memory state and hosted applications execution background.

Priority P0

Demand Reference

D4

Test Reference

T3

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RequirementsSpecification document

Migration requirements P0No task processing interruptionTCP connection keepingResults consistencyCPU load independence

Migration performance study P1Interruption durationMigration durationDelay

TUNe-related requirements P2Integration in TUNeMigration Automation

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ArchitecturePreliminary study

Requirements

Architecture

Tests

Implementation

Tests

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NFS serverDHCP server

Architecture

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A-204-06

DHCP ServerNFS Server

Switch

A-204-02

DNS ServerNTP Server

Architecture

A-204-03 A-204-04

A-204-05

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Architecture

dom0

Ubuntu Gutsy Gibbon / Xen Management

Xend Daemon

domU-2

Ubuntu Dapper Drake / NFS root

domU-1

GNU/Linux Debian Etch / NFS root

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Migration

Pool Architecture

Dom0-1 Dom0-2

DomU

Event

Migrate

TUNe Administrator

Probe0-1 Probe0-2

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Pool ArchitectureTUNe Diagrams

this.probed.migrate

Migrate

VM.start

VM-Probe.start

Start

VM.stop

VM-Probe.stop

Stop

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TestsPreliminary study

Requirements

Architecture

Tests

Implementation

Tests

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TestsExample

T2

Title Streaming server migration between two dom0.

Pre-requisites A streaming server is running on a domU. A streaming client is connected to the server.

Test description The video is watched during the migration.

Expected results The client should not be disconnected.Requirement reference R1, R2

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TestsCoverage matrix

RequirementsR1 R2 R3 R4 R5 R6 R7 R8 R9 R10 R11 R12

Tests

T1 ●

T2 ● ●

T3 ● ●

T4 ● ● ● ●

T5 ● ●

T6 ● ●

T7 ● ●

T8 ● ● ●

T9 ● ● ●

T10 ● ● ●

T11 ● ●

T12 ● ●

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TestsMigration performances

Interruption duration 1 s

Delay ~10 s

Migration duration 16 s (60% longer than RMI)

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Migration

TestsTCP Connection Preservation

Dom0-1

DomU

Dom0-2

StreamingServer

Streaming Client

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Test SchemeTCP Connection Preservation

Streaming Client Output

Dom0 Source Dom0 Destination

Network Traffic Monitor

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TestsIllustrative Scenario

Dom0-1 Dom0-2

Event

TUNe Administrator

Probe0-1 Probe0-2

Migrate

CPU loading

Streaming Client

StreamingServer

DomU

Migration

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Project Management

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Specification document

Architecture document

Test plan

Risk Analysis

Action List

Schedule

Tutorials

Project Management

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Project ManagementRisk Analysis

Risk Probability Criticality Product Preventive Actions Corrective Actions

Data loss (large size) 2 1 2 Copy on external hard drive Backup

Data loss (small size) 2 3 6 Copy on SVN repository Backup

Network breakdown 1 2 2Local copy of

documentation and API

Schedule adaptation

System crash (OS, VM) 1 2 2 Installation guide Reinstall

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Project ManagementAction List

No Origin Date Description Comment Initial deadline

Revised deadline Owner Closed date

1 3/10 Book a room for the meeting

- 3/11 - Hery 3/10

2 3/10 Send an Email to supervisor

Ask for meeting confirmation

3/10 3/11 Zek 3/11

3 3/13 Bring bakeries

Donuts 3/13 - Julien C

4

5

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Project ManagementSchedule

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Project ManagementTutorials

Xen installation and setting up

NFS server

DNS server

DHCP server

NTP server

TUNe

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Progress Report

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Network Architecture

Progress ReportSoftware

ArchitectureTests TUNe Improvements

CPU Load OKMigration OKInterruption OKIntegrity OKDelay NOKStreaming NOK

Kernel 18.8Xen (dom0) Wrappers,

Deployment diagram

Reconf. Diagram,Probe TUNe modifications

Streaming scenario

kdeployJ2EE

Policies

NTP Server

DNS Server

Clock issues

Synchronisationissues

Issues resolved

Name resolution

Xen 3.1

Kernel 19-6

Kernel 18.8NFS root (domU)

DHCP Server

NFS Server

BugFilesystem

NFS Boot on DomU

Functionnal configuration

Kernel 22-14

Delay OKStreaming OK

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Completed objectivesXen deployment

Migration performance analysis

TUNe wrapping

Tutorials production

Remaining tasksAutonomous administration

Streaming scenario with TUNe

Further improvementsJ2EE scenario

Grid 5000 deployment

Policies

Conclusion

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Emmanuel Murzeau

Daniel HagimontLaurent BrotoMohamed TouréAlain TchanaFabien Hermenier

Special Thanks

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Any questions ?




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TestsResults consistency Writing in a file

CPU load independence Migration with different CPU loads

Interruption duration Ping probing

Delay Comparison with local execution of LU factorizations

Migration duration Comparison with equivalent RMI calls

TCP connections keeping Migration of streaming server

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Hardware

Domain 0



User Applications


Preliminary StudyXen Architecture Overview

User Domain 1

Abstraction Layer

Modified Drivers

User Applications

Xen Hypervisor

User Domain 2

Abstraction Layer

Modified Drivers

User Applications

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Hardware

Domain 0



User Applications


Preliminary StudyXen Architecture Overview

User Domain 1

Abstraction Layer

Modified Drivers

User Applications

Xen Hypervisor

User Domain 2

Abstraction Layer

Modified Drivers

User Applications

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Dom0-1

DomU

Dom0-2

xm m

igra

te

Preliminary StudyMigration

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Dom0-1

DomU

Dom0-2

xm m

igra

te

Filesystem

Preliminary StudyMigration

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Preliminary StudyTUNe Component-based Architecture

Fractal Components ADLArchitecture Description Languague

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Preliminary StudyTUNe Deployment Diagrams

S1.configure S2.configure

S1.start

S2.start

S2


1

1

S1


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Preliminary StudyTUNe Reconfiguration Diagram

this.stop

this.start

this.reconfigure

event

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Pool ArchitectureTUNe wrappers

domU wrapper

StartStop

Migrate

domUProbe wrapper

StartStop

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Migration

TestsResults consistency

Dom0-1

DomU

Dom0-2

Writingin a file

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Migration

TestsCPU Load Independence

Dom0-1

DomU

Dom0-2

CPU loading

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Progress ReportTests TUNe Improvements



Software ArchitectureXen 3.1

Kernel 19-6


DHCP Server

NFS Server

BugFilesystem

NFS Boot on DomU


Kernel 22-14

Kernel 18.8Xen (dom0) Wrappers,

Deployment diagram


Streaming scenario

kdeployJ2EE

Policies

NTP Server

DNS Server

Clock issues


Issues resolved

Name resolution


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Software Architecture

Tests


Kernel 18.8Xen (dom0)

NTP Server

Clock issues


Issues resolved



Progress ReportTUNe Improvements

Wrappers,Deployment diagram


Streaming scenario

kdeployJ2EE

Policies

DNS Server

Name resolution

Xen 3.1

Kernel 19-6


DHCP Server

NFS Server

BugFilesystem

NFS Boot on DomU

Kernel 22-14

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Tests TUNe Improvements

Wrappers,Deployment diagram


Streaming scenario

kdeployJ2EE

Policies

DNS Server

Name resolution


Progress ReportSoftware

Architecture


Kernel 18.8Xen (dom0)

NTP Server

Clock issues


Issues resolved

Xen 3.1

Kernel 19-6


DHCP Server

NFS Server

BugFilesystem

NFS Boot on DomU


Kernel 22-14

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Migration

TestsInterruption Duration

Dom0-1

DomU

Dom0-2

Pings

Results: 1s

Monitor Computer

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Migration

TestsDelay

DomU

Dom0-2Dom0-1

LUFactorizations

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TestsMigration duration

DomU

Dom0-2

Dom0-1

Chrono

Ping pong Migration

Results: - Migration: 16s- RMI: 10s

Documents

Virtualization for autonomous administration of servers