radko zhelev, ipp bas generic resource framework for cloud systems 1 generic resource framework for...
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Radko Zhelev,IPP BAS
Generic Resource Framework for Cloud Systems1
Generic Resource Framework for Cloud Systems
Radko Zhelev,IPP BAS
Generic Resource Framework for Cloud Systems2
Summary
• Resource abstraction – representing resources in a unified way; generic management without knowledge of the underlying resource access protocol; extensibility; modeling with regards to Cloud requirements
• SOA – OSGi approach; lightweight service architecture; high dynamics
• Distribution topology – Cluster to Cluster management; One Management Cluster per datacenter
Radko Zhelev,IPP BAS
Generic Resource Framework for Cloud Systems3
• Typically consist of one or more Datacenters physically spread in strategic geographical locations
Cloud Systems Physics
Radko Zhelev,IPP BAS
Generic Resource Framework for Cloud Systems4
Distributed Topology
Radko Zhelev,IPP BAS
Generic Resource Framework for Cloud Systems5
Roles• Managed Datacenter Nodes, Devices and
Logical Units – hardware/virtual resources, service applications, configurations, tenant users, maintenance procedures, etc.
• Management Server (MS) Cluster – handles directly the management of resources: maintains resource information, enables monitoring, schedules management operations, performs filtering
• Remote Access Servers (RAS) – consolidate results from MS Clusters and provide administrator access (via GUI or Web Browser) to management and monitoring functionality
Radko Zhelev,IPP BAS
Generic Resource Framework for Cloud Systems6
Resource abstraction – the Control Unit
• State Variables – name-value pairs defining the Control Unit state.• Control Unit Actions – the operations available upon the resource. Constructors! and
Destructors• Control Unit Metadata – describing the Interface - State Variables and Actions• Control Unit Type – a class of resources having the same Interface and respectively –
metadata. There may be many instances of the same type (having the same interface), which are in different state (different values of the state variables)
• Control Unit ID – identifier in the scope of the Control Unit Type
Type: My Application Type: User
ID: fooState Variables: Status: running SecureMode: enabledActions: stop() start() setSecureMode(boolean)
ID: john.smithState Variables: username: john.smith email: [email protected] roles: view apps, change configsActions: setEmail(String) addRole(String) removeRole(String)
Radko Zhelev,IPP BAS
Generic Resource Framework for Cloud Systems7
Control Unit Hierarchies
• Resources are naturally grouped in relations => We define Control Unit Hierarchies – parent and sub Control Units
• Host Control Units – roots of hierarchies
• Components Control Units – belong to certain Resource Host
• Control Unit Identification - 4 elements: (host type, host id, control unit type, control unit id)
Radko Zhelev,IPP BAS
Generic Resource Framework for Cloud Systems10
The OSGi PlatformOSGi – Open Service Gateway InitiativeJava Application Platform:- Application lifecycle: OSGi Bundles can be started,
stopped, installed, uninstalled- Service Registry: cooperation model, service orientation- Specification standard: interoperability
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Generic Resource Framework for Cloud Systems11
System Architecture
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Generic Resource Framework for Cloud Systems12
Use Case: Retrieving Control Unit State
The same is for
invoke action
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Generic Resource Framework for Cloud Systems13
System Architecture – optional OSGi on Datacenter Node
Applicable for PAAS and SAASNot applicable for
IAAS
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Use Case: Extensibility - adding new resource management feature
Cloud Company developers have Implemented Agent-based Control Unit representation of a new type of resource.
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Generic Resource Framework for Cloud Systems18
Use Case: Extensibility - adding new resource management feature
Radko Zhelev,IPP BAS
Generic Resource Framework for Cloud Systems19
Use Case: Extensibility - adding new resource management feature
Radko Zhelev,IPP BAS
Generic Resource Framework for Cloud Systems20
Use Case: Extensibility - adding new resource management feature
Radko Zhelev,IPP BAS
Generic Resource Framework for Cloud Systems21
Use Case: Extensibility - adding new resource management feature
Radko Zhelev,IPP BAS
Generic Resource Framework for Cloud Systems22
Use Case: Extensibility - adding new resource management feature
Radko Zhelev,IPP BAS
Generic Resource Framework for Cloud Systems23
Use Case: Extensibility - adding new resource management feature
Radko Zhelev,IPP BAS
Generic Resource Framework for Cloud Systems24
Use Case: Extensibility - adding new resource management feature
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Generic Resource Framework for Cloud Systems25
Events HandlingTwo known approaches:• Publish/subscribe – publishers send events
without knowledge about the listeners. (convenience for the publishers)
• Subscribe/publish – events are fired in response to a subscriptions (influences efficiency)
Our approach:• Admin applications subscribe into the System – subscription filters are spanned to all physical locations (MS Hosts and Control Unit Agents)• Control Unit Providers fire all state change events into the System• The System decides whether notifications should be delivered
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Related Work and Analysis
• Grid Monitoring Architecture
• SOA – Web Services, OGSA, Globus• Resource Abstraction- schema-based and object based- WSRF and OCCI
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Future Work
• Persistent storing of resource data; search filters• User Management and Access Control
• Rule-based Automations
Shifting responsibility from providers to the system
Receive 10 events that CPU > 90%
Install new application instanceto share the load
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Thanks for your attention