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System management & cloud solution on z update

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I delivered this presentation at the LinuxONE event, held in the IBM Learning Center in Montpellier from 2015 Sept 15 to 17. The material is related to the IT Service Management part of the overall announcement of LinuxONE.

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System management & cloud solution on z update

  1. 1. System management & Cloud solution on z Update “LinuxONE, Linux without Limits" Event Montpellier, 2015 September 15-16th Domenico Chillemi Executive IT Specialist nicochillemi@it.ibm.com
  2. 2. IBM Mainframe 50 years old on 2014 Strong Batch experience Graduated in Mathematics at University of Messina (Italy) Member of IBM Academy of Technology, zChampion and other Who is Nico?
  3. 3. Agenda • Positioning Linux on z as a strong solution platform for Cloud – Mainframe in the Cloud – The main Cloud on z Solution – IBM Infrastructure Suite on z (IISz) Positioning – Overview of IISz • Infrastructure Suite Components Quick Overview – IBM Wave for z/VM – IBM OMEGAMON XE on z/VM and Linux – IBM Operations Manager for z/VM – IBM Tivoli Storage Manager Extended Edition – IBM Backup and Restore Manager for z/VM • Main solution remaining components quick overview – IBM Cloud Manager for OpenStack – IBM Cloud Orchestrator • Cloud and Workload Automation • Lightweight cloud on z
  4. 4. 4 • z Systems represents the largest enterprises in many of the world's most demanding industries • z/OS is in large part the fundamental data source (DB2 parallel sysplex) where availability and security are key • Linux on z Systems has been steadily growing (double digits) for 15 years – Z13 provides significant improvements to new workloads • Cloud enablement for Linux on z starts with IaaS and evolving to PaaS • Based on OpenStack and “patterns” • Cloud enablement for z/OS is mostly PaaS and focused on services • Built on workflows with REST APIs • Leveraging existing assets on z/OS is fundamental to value Mainframe and the Cloud
  5. 5. Exploiting Cloud on z Systems provides significant business value day one and increased value over time Workload Optimized Cloud Virtualization Optimization Cloud Enabled Data Center Enterprise Cloud Dev & Operations Teams Infrastructure Teams CIO / IT Executive Workload Optimized Patterns Image Management Usage Metering and Chargeback Self Service Provisioning Common Cloud platform built on an open standards reference model Fit for Purpose Workloads Disaster Recovery Enterprise Security Customers can move across roadmap as business requirements grow DevOps C Suite/LOB 4 3 1 2 Today Tomorrow
  6. 6. 6 • Start with z/VM as hypervisor • Build the z/VM based Infrastructute as a Service (IaaS) • Use z/VM 6.3 • Build the base through the IBM Infrastructure Suite • Add OpenStack • server, network, storage, security • Use OpenStack services • Build the cloud platform through IBM Cloud Manager for OpenStack • Finalize Cloud applications through IBM Cloud Orchestrator • Patterns for the workloads • Leveraging Chef, embracing HEAT, evolving to docker • Develop applications through UrbanCode Deploy with Patterns • Leveraging Fit4Purpose model • Consistent APIs across platforms • Choose z when workload requirements demand higher SLAs • Consider also z/KVM as Linux native hypervisor in future Bring Linux on z into the Cloud
  7. 7. Cloud Automation IBM Cloud Manager with OpenStack IBM Wave Ops Mgr, Backup/Restore , TSM IaaS - Infrastructure Management Rich set of ready to use patterns Open, scalable platform Cloud Marketplace Cloud Management IBM Cloud Orchestrator Pre-defined menu of Services Pattern sharing/re-use, from engine Monitor performance of z/VM and Linux guests OMEGAMON XE Simple, intuitive, graphical z/VM management tool Operational management Backup/recovery of z/VM & Linux The main solution for cloud workloads on z Systems Cost management High Availability Security Application Performance Management Workload Automation Add on:
  8. 8. IBM Infrastructure Suite for z/VM and Linux Main Cloud on z solution Build Steps (1)
  9. 9. • Wrong believe that Infrastructure Suite for z/VM and Linux on z (IISz) is itself Cloud on z • Positioning IISz as the “Infrastructure Suite” comes from the following thoughts: • Whether customers are looking at simple virtualization or a full cloud solution with their z/VM environment, the basic z/VM and Linux infrastructure must be in place and must be managed • The IISz Suite is designed to manage the infrastructure level • While WAVE has provisioning, it is to aid the system programmer in provisioning guests, not to be a cloud based self-ordering provision tool, like an ICM • Cloud solutions can be easily added on to this infrastructure moving toward a full cloud based environment. • Whether virtualization only or full cloud implementation, the infrastructure is the first level needing management • In conclusion, IISz is designed to serve Cloud on z, so it can be well positioned as IaaS (Infrastructure as a Service) for Cloud implementations on z Systems Positioning IBM Infrastructure Suite on z (IISz)
  10. 10. File Level backup and recovery for Linux virtual machines Simple, intuitive, graphical z/VM management tool Tivoli Storage Manager IBM Wave IBM Infrastructure Suite Operations Manager for z/VM OMEGAMON XE on z/VM and Linux Performance monitoring of z/VM and Linux virtual machines Facilitate operational monitoring and automated operations, take action based on events Image and file level backup and restore of z/VM environment File level backup of z/VM data Backup and Restore Manager for z/VM Linux on z Systems z/VM Add Tape Manager for z/VM for customers backing up from z/VM to tape z/VM based Infrastructure as a Service (IaaS) solution for Cloud on zSystems
  11. 11. When and why choose z/VM? Infrastructure simplification via virtualization • Consolidate distributed, discrete servers and their networks • IBM Mainframe security, qualities of service • Shared infrastructure with workload isolation • Exploit built-in z/VM system management Scale and elasticity • Deploy servers, networks, and solutions fast • React quickly to challenges and opportunities • Allocate server capacity when needed • Support mixed workloads at close to 100% platform utilization Technology exploitation • Linux with z/VM adds more function to Linux • Linux exploits unique z/VM technology features • High speed connectivity to z/OS applications and data (CPU, Memory, Network, Adapters, Crypto, Devices) z/OS z/OSz/VM z/VM Business Apps Data Serving Virtual Servers Virtual Servers Shared Everything Infrastructure z/OS® z/OSz/VM z/VM Business Apps Data Serving Virtual Servers Virtual Servers Shared Everything Infrastructure (CPU, Memory, Network, Adapters, Crypto, Devices) z System platform capabilities can support cloud environments and allow integrated cloud environments across z System and distributed
  12. 12. The goal is to start the process of differentiating the components as not being the same, but complementary. Too many times folks highlight the similarities, but the goal is to highlight the differences. Similarities do not need to be ignored, but should be a minor focus. The major focus is the main role of each component. • Position the products main functions to help differentiate them. • Do not focus on overlap, focus on differences: Product Main function OMEGAMON Monitoring z/VM and Linux TSM Backup and Restore Linux at the file level WAVE z/VM System Programmers Administration tool Operations Manager for z/VM z/VM Automation tool Backup and Restore manager for z/VM z/VM Backup at the file level and Linux at the volume level IISz Products Basic Information
  13. 13. Infrastructure Suite Components Quick Overview
  14. 14. Provisioning & Administering z/VM Linux guests Provision Linux guests/servers  Across LPARs or machines  Servers - memory and CPU  Network – connect to Guest LANs or VSWITCHes  Storage – based on admin-define device pools  Customize first boot before TCPI/IP initialized  Customize cloning via REXX scripts Manage and administer Linux guests/servers via GUI  View of all servers graphically  Run shell scripts against a server or group of servers  Activate or deactivate server or group of servers  Login to server directly from GUI  View and modify network connections Real time monitoring  High level view of system status via dashboard gauges  View storage utilization
  15. 15. IBM Wave for z/VM IBM Wave for z/VM (formerly CSL-WAVE) provides the graphical interface that simplifies and helps to automate the management of z/VM and Linux on System z virtual servers. A simple, intuitive graphical tool providing management, provisioning, and automation for a z/VM environment, supporting Linux virtual servers.  Allows delegation of administrative capabilities to the appropriate teams  Simplifies and Automates tasks  Provisions virtual resources (Guests, Network, Storage)  Supports advanced z/VM capabilities such as Single System Image and Live Guest Relocation  Basic Monitoring and management of virtual servers and resources from a single graphical interface
  16. 16. z/VM & Linux Performance Monitoring and Automation Monitor performance based on best practices  Virtual CPU for each guest  z/VM processor utilization  Spin lock wait  Virtual disk utilization  Virtual storage utilization with V/R memory ratio  Formation and size of eligible list  Page and spool space utilization and I/O rates  DASD I/O and minidisk cache usage  Resource constraint analysis Use historical data to  Understand capacity  Size Linux guests for best performance in a hosted environment
  17. 17. Bringing z/VM and Linux monitoring into the Enterprise View OMEGAMON XE on z/VM and Linux • Increased Performance & Availability • Provides insight into the health and performance of z/VM and Linux Rich collections of attributes monitor thresholds for z/VM and Linux best practices. Reflex automation provides timely resolution and/or notification. Lightweight visibility to the z/VM hypervisor, Linux OS, and Linux Log data in one tool. Deep integration with Cloud and Smarter Infrastructure Suite integrating z/VM and Linux data to the Enterprise view (Cross platform workflow management). Persistent Historical views allows management of real and virtual resources across peak periods and downtimes for clear view of resource usage and constraints. 17 Enterprise-ready cloud monitoring
  18. 18. z/VM Operational Monitoring and Automation Generate alerts and/or automatically recover from  Abend, termination, or error messages  Service machine disks approaching full  Critical user IDs or guests being logged off or entering error state  Spool and/or page space approaching full Schedule automated system maintenance procedures  Spool cleanup based on policies  Minidisk cleanup (from logs), including archiving  Orderly startup and shutdown  Relocation of critical guests to another SSI member  Backups of z/VM system View & issue commands on consoles of Linux guests and CMS service machines  Operations staff monitoring multiple consoles or a central console of alerts  System programmers debugging a problem on a guest or service machine
  19. 19. Operations Manager for z/VM 19 Operations Manager for z/VM Increase productivity  Authorized users to view and interact with monitored virtual machines without logging onto them  Multiple users view/interact with a virtual machine simultaneously Improve system availability  Monitor virtual machines and processes  Take automated actions based on console messages  Reduce problems due to operator error Service Virtual Machine being monitored Service Virtual Machine being monitored Console monitoring Console monitoring Take action • View & interact with consoles • View spool files Automation  Routine activities done more effectively with minimal operations staff  Schedule tasks to occur on a regular basis Schedule tasks Monitor page and spool usage Respond to system events (user state changes) Integration  Fulfill take action requests from performance monitoring products (e.g. OMEGAMON XE on z/VM and Linux)  Send alerts to email, central event management systems (e.g. Netcool/OMNIbus), etc. Idle monitor
  20. 20. IBM Wave for z/VM and Operations Manager for z/VM • IBM Wave for z/VM provides management via an interactive GUI interface for: • Monitoring of virtual server resources • z/VM and Linux administrator tasks • Delegating responsibilities to Linux administrators and/or clients to co-manage their environment • Provisioning of Linux guests • Basic performance information • Operations Manager for z/VM provides operational monitoring & automation • In the background • Monitoring of console messages for z/VM service machines and Linux guests • Monitoring “state” information for z/VM service machines and Linux guests • Monitoring spool and page space on the z/VM system • Automated responses to these monitors when they are triggered • Interactive when needed • View and interact with live service machine and Linux guest consoles • View and manage spool files • Complementary solutions • Use Operations Manager to monitor Wave service machines • Use Operations Manager to automatically initiate tasks in IBM Wave via the IBM Wave CLI
  21. 21. IBM Wave and OMEGAMON XE on z/VM and Linux • IBM Wave for z/VM provides point in time monitoring of virtual server resources • OMEGAMON XE on z/VM and Linux provides • Deeper level monitoring of z/VM • Deeper level monitoring of individual Linux guest environments • Ability to set service level thresholds and generate events when exceeded • Historical view of monitoring data • OMEGAMON XE on z/VM and Linux and IBM Wave can coexist in customer environments • Both gather the data from the Performance Toolkit for z/VM
  22. 22. Operations Manager for z/VM and OMEGAMON XE on z/VM and Linux Linux Guest Linux GuestLinux Guest Web browser OMEGAMON XE (including TMS) z/VM Agent Agent Application Application z System Perf Toolkit Extensions Operation s Manager OMEGAMON XE on z/VM and Linux • Performance monitoring for z/VM and Linux guests • Part of Tivoli Management Services (TMS) infrastructure Operations Manager for z/VM • Monitor consoles of z/VM service machines and guest user IDs • Take actions based on console messages • Respond to “take action” requests from OMEGAMON • Schedule routine tasks
  23. 23. Image level backup of Linux guests Operating system Applications Application data (maybe) Backup and Recovery of z/VM and Linux on z File level backup of z/VM data Directory information Configuration files Log files Tools – REXX EXECs, automation scripts, etc. File level backup of Linux guests Configuration files Log files Tools Image level backup of z/VM Operating system 23
  24. 24. Backup and Restore Manager for z/VM • Backup • Requested by administrators • Full or incremental • Flexible selection of disks and files to back up • Review job before submitting for backup • Restore ̶ Restore data via full screen interface or commands ̶ Performed by users for their own data ̵ Extended to other users available via exit ̶ Performed by administrators for any data  Integration with Tape Manager for z/VM  Optional compression of data during backup via exits  Call your own compression algorithm  Use IBM provided routine  Encryption available via exits  Call your own routine  Use vendor-written routine, such as V/Soft Software’s Encrypt/Backup for z/VM  Use encryption capable tape devices 24 Backup and recovery of z/VM resources including full Linux on z images
  25. 25.  Performance: High-performance, scalable backups and restores that minimize network traffic .  Disaster recovery: Performs automated, scheduled asynchronous replication of backup data and metadata  Flexibility: Data protection and disaster recovery for more than 500 different disk, tape and virtual tape storage  Scalability and reliability Management of up to four billion data objects on single server architecture built on IBM DB2® Cloud Backup/Recovery Tivoli Storage Manager Extended Edition Backup and recovery of Linux on z resources
  26. 26. z/VM Backup and Restore Manager Other guest FBA or ECKD DASD TSM Server TSM Client CMS minidisk and SFS files dirA/file1.ext dirB/file2.ext dirC/file3.ext FN FT FM FN FT FM FN FT FM Linux Combine the solutions for file level and volume level recovery TSM Server TSM Client Linux Backup and Restore Manager and Tivoli Storage Manager together
  27. 27. Completing the Main solution through OpenStack Services and Patterns
  28. 28.  An open-source project which abstracts compute, networking and storage hardware into logical resources that can be addressed through Application Programming Interfaces (APIs)  Abstracts the complexity and provides standardized access to these resources regardless of the infrastructure platforms and technologies  Several vendors including IBM participating to this project  Provides an open, modular IaaS approach for incorporating additions in a consistent manner  Allows standardization and portability with flexibility What is OpenStack
  29. 29. OpenStack services  Keystone  User and Tenant definition, authentication, and roles  Nova  Allocation of virtual instances  Neutron  Networking assignment and connectivity  Glance  Image management  Cinder  Storage management  Horizon  Graphical user interface  Each has associated configuration file – key ones for z/VM integration are nova, neutron, and Cinder
  30. 30. OpenStack Architecture
  31. 31. What is a Pattern? • A combination of – A base image containing a Linux operating system – Additional “things” that produce a customized instance for a particular purpose • Virtual resource configuration (storage, network interfaces…) • Software (agents, middleware, application…) • A pattern can contain one or more images, each customized in a different manner • Topology may also be required – One image in a pattern requiring information about another pattern that is only available at runtime (e.g. hostname/IP address) • e.g. HTTP server(s) Web Application Server(s) Database Server
  32. 32. Pattern terminology • Script Package/Component – A program in a language supported on the target platform that can execute after the instance is deployed • Can be a “wrapper” around a silent installation script • Chef – Open source client/server for automatically deploying an environment (“infrastructure as code”) • Heat orchestration template – An OpenStack component that associates one or more images, each with zero or more software configuration objects, with an optional topology
  33. 33. Reduces multi- product deployment durations by up to 80% Reduces deployment error/fix durations Reduces need for deep product skills Improves quality of delivery Time Savings Quality and Efficiency Customers needs through brainstorming took to this!  One dozen patterns covering 50% of Linux on z Systems portfolio revenue  Clear commitment from IBM to pattern-enable middleware products for Linux on z Systems  Organizations will be able to build out complex Cloud workload instances on z Systems in a fraction of the time Announcing Custom Patterns for Linux on z Systems
  34. 34. Introducing IBM UrbanCode Deploy with Patterns  Pattern designer – Design open, full stack application environments in a diagram or textual editor  Design once, deploy anywhere – Deploy full stack environments to multiple clouds  Environment lifecycle management – Manage infrastructure change and easily apply changes to existing environments  Delivery process automation – Automated delivery process with integrated full stack environments Design and deploy full stack application environments for multiple clouds IBM UrbanCode Deploy with Patterns Application Middleware Config Middleware OS Config Hardware Environment Blueprint
  35. 35. • Graphically create Heat templates via drag-and-drop • Directly deploy Heat templates (stacks) into an OpenStack cloud (including ICM and ICO), or export template text and import into OpenStack IBM Urban Code Deploy with Patterns
  36. 36. IBM Infrastructure Suite for z/VM and Linux IBM Cloud Manager with Openstack Main Cloud on z solution Build Steps (2)
  37. 37. IBM Cloud Manager for OpenStack (ICM) Quick Overview •Based on OpenStack •First tier in the IBM Cloud suite of cloud management products •Available to run on System z ("manage from" support) •Also available to run from Linux x86 or Power, "manage to" Linux x86, Power, and System z environments •Can deploy CHEF and HEAT based Patterns •Formerly known as SmartCloud Entry
  38. 38. • Enables rapid IT response to ever-changing demands of business via self-service provisioning of infrastructure services, as end users can re-deploy virtual servers with an easy to use interface • Yields improved virtualization operational efficiency and greater overall business effectiveness. Administrators capture & manage standard VM images with support for common business processes • Provides capability to track/correlate cost of infrastructure to department usage via basic usage metering, so Organizations & Managed Service Providers (MSPs/CSPs) can align service to expense • Supports production-grade cloud operations & interoperability at scale via enhanced foundation and full OpenStack API compatibility • Provides optimized infrastructure usage, reduced cost of cloud ownership, and higher workload quality of service • Open computing cloud alternative to proprietary vendors, with world-class support from IBM An easy to deploy and use cloud management software offering based on OpenStack with IBM enhancements and support Introducing IBM Cloud Manager for Openstack (ICM)
  39. 39. Offers rapid time to value Chef Server and Client included Supports Heterogeneous Compute, Storage & Network • Central management across multiple hypervisors & domains • All IBM server architectures & major hypervisors supported Additional Features for Increased Eefficiency • Dashboards show Cloud admin resource capacity, VM utilization • Reporting/Metering/Billing, Resource expiration & project approval policies, network configuration & mapping Multi-Cloud Federation Clouds • Federation of multiple OpenStack instances •Accelerate Time to Market: Time to market improvement for new applications • Integrated Management: Approvals, metering, billing, users and projects through a single ‘pane of glass’ •Flexible, modular design: Based upon OpenStack IaaS - Access to OpenStack APIs. Extensible via REST API allowing partners to easily customize the UI IBM Cloud Manager with OpenStack is an easy to deploy, simple to use cloud management software offering based on OpenStack (Icehouse) with open cloud APIs. Importantly, we include IBM enhancements that features a self-service portal for workload provisioning, virtual image management, and monitoring. It's an innovative, cost-effective approach that also includes automation, metering, and security. Open Simple Innovative IBM Cloud Manager with OpenStack
  40. 40. IBM Infrastructure Suite for z/VM and Linux IBM Cloud Manager with Openstack IBM Cloud Orchestrator Main Cloud on z solution Build Steps (3)
  41. 41. IBM Cloud Orchestrator (ICO) Quick Overview •Based on OpenStack •Builds on functionality of Cloud Manager with OpenStack and adds runbook automation and middleware pattern support for workload deployment •Formerly known as SmartCloud Orchestrator •Run from Linux 86 or Softlayer “manage to” Linux x86, Power, and System z environments
  42. 42. 42 An open and scalable cloud platform An easy to use orchestrator for cloud service automation A rich set of ready to use automation packages A marketplace for automation packages sharing and re-use Consolidate and Virtualize Automate and Standardize Optimise and Orchestrate Cloud Service Management IBM Cloud Orchestrator
  43. 43. IBM Cloud Orchestrator Major Functions • Builds on basic image provisioning and self service functions to add: • Patterns (System and Application) • Orchestration (workflow process automation and integration with other products) • Monitoring and Scaling (adjustments based on performance thresholds) • Public cloud platforms (e.g. Amazon, SoftLayer) • Hybrid (Public and Private) Cloud support • Includes integration with non-IBM OpenStack clouds • Manages x, p, and z environments from the Linux Intel platform • System z supported as a “Manage-to” environment for Linux z/VM guests • OpenStack components used • Nova (Compute, Network), Glance (Image), Neutron (System z networking), Cinder (storage, but not for System z) from previous version of SCO • New ICO adds Horizon (UI), Heat (patterns), Ceilometer (monitoring), Keystone (security) and expands Neutron and Cinder for x, p, and z • Improved support of z/VM environment • No longer dependent on Public Cloud Gateway component • Increased networking and deployed instance flexibility
  44. 44. IBM WAVE, ICO, and ICM Comparison PRIMARY usage of IBM Wave • Efficient management of the ENTIRE z/VM environment (and ONLY z/VM) • Administers the z/VM resources • A tool for z/VM System Administrators, including allowing administrators to build and clone Linux guests for users – NOT something to give to end users – NO concept of catalogs, patterns or workflow automation (orchestration)
  45. 45. IBM WAVE, ICO, and ICM Comparison The PRIMARY usage of IBM Cloud Manager for OpenStack (ICM): •Cloud provisioning and automation based on OpenStack •Simplified implementation, lifecycle management, resource management, self-service portal, monitoring & metering •Full access to OpenStack APIs – All IBM server architectures and major hypervisors now available to choose from •Allow end users to deploy Linux instances onto z/VM and other supported cloud platforms on x and p – Standalone images (with single customization script) from user interface – “Patterns” using OpenStack Heat templates invoking scripts/Chef from the administrative (OpenStack Horizon) interface – Automatic horizontal scaling and project resource quotas
  46. 46. IBM WAVE, ICO, and ICM Comparison PRIMARY usage of IBM Cloud Orchestrator (ICO) • Allows end users to deploy images, system patterns, and application patterns from customizable catalog offerings • Eases coordination of complex tasks and workflows, necessary to deploy applications • Provides the automation ("Orchestration") from the time the user makes the request through the time the request is deployed, and beyond to the time the resources are not needed • Can define cataloged offerings that deploy components across multiple operating system platforms. – e.g. HTTP server on x, Web Server on p, Database on z – Supports pattern scaling policies, user billing, project quotas – Provides integration with other products and processes via Business Process Manager workflows, email notification, etc. – Manages both private and public clouds (Softlayer, Amazon EC2, Non- IBM OpenStack) to build hybrid clouds
  47. 47. Cloud and Workload Automation
  48. 48. Batch Cloud Scenario with IWS zCentric • A very big cross platform batch application needs to run once a year • A huge number of distributed servers is necessary • IWS agents currently installed cannot cover all the demanded resources 0 10 20 30 40 50 60 70 80 Jan Mar May Jul Sept Nov % CPU % Memory % Storage Currently installed TWS Agents service level capability
  49. 49. Tivoli Workload Automation Cloud OtherrequestsCloud accelerates the need for workload automation Value proposition  IWS has moved to the center between the request for business services and the demand for Cloud infrastructure and resources: it allows to manage mission-critical, end-to-end workloads through fluid and elastic cloud resources Capabilities  IWS provides ICO integration for  Immediate provisioning of workload automation ready environment, for temporary demand  Elastic provisioning of workload automation resource for intermittent demand Business Value  Reduce resource, installation and customization costs and increase productivity  Adapt quickly in the context of limited resources 49 IBM Workload Scheduler & IBM Cloud Orchestrator
  50. 50. IBM Infrastructure Suite for z/VM and Linux IBM Cloud Manager with Openstack IBM Cloud Orchestrator Cloud on z solution with IWS zCentric on demand NEEDED IWS zCentric Linux on z Agents
  51. 51. Lightweight Hybrid Cloud on z
  52. 52. Docker • Strong Open Source Project • Several contributors to the project (same of OpenStack) • Partnership with IBM • Linux on z operating systems supported • What is exactly Docker? • A light weight virtualization technology • A packaging mechanism for applications and hooking applications together • OpenStack & several Linux OS supported, including Ubuntu
  53. 53. Lightweight architecture Virtual Machine zVM/KVM/VMWare mechanism Simple containers Docker mechanism
  54. 54. Isolation of Linux resources while running Cloud through Docker and its containers • Docker provides isolation for filesystems, processes, and networks used by each container • Filesystem isolation: each container is its own root filesystem • Process isolation: each container runs in its own process environment. • Network isolation: separate virtual interfaces and IP addressing between containers. • Resource isolation and grouping: resources like CPU and memory are allocated individually to each • Copy-on-write: filesystems are created with copy-on-write, meaning they are layered and fast and require limited disk usage
  55. 55. Thank You