Bringing Docker to the Cloud
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Clocker is a tool that brings Docker to the cloud by managing Docker engines, containers, and applications on Docker in an automated way. It extends the Apache Brooklyn application management platform to provide first-class support for Docker, including optimized Docker blueprints, container orchestration across multiple hosts, and seamless networking between Docker services. Clocker manages the entire lifecycle of Docker applications from deployment to scaling and automation.
Bringing Docker to the Cloud
- 1. Bringing Docker to the Cloud Andrew Kennedy, 30 June 2015
- 2. @grkvlt Agenda • Clocker Introduction • What is Clocker? • Application Management • Container Management • Clocker Networking • Demonstration • Clocker 1.0.0 • Summary Copyright 2015 by CloudsoftCorporationLimited
- 5. @grkvlt Clocker Statistics • 1 Year Old • 636 Commits • 131 Pull Requests • 10 Contributors • 2 External • 14 KLOC • 20 Releases • 17 Conferences http://www.redotheweb.com/CodeFlower/http://www.redotheweb.com/CodeFlower/ Copyright 2015 by CloudsoftCorporationLimited
- 6. @grkvlt What does it do? 1. Spins up and Manages Docker Clouds 2. Serves up Containers on Demand 3. Manages Composite Application Deployments on Docker Copyright 2015 by CloudsoftCorporationLimited
- 7. @grkvlt What does it provide? • Infrastructure Management • Docker Hosts • Swarm Controller • Multi Host and Multi Container Applications • Seamless Networking • Communication Between Services • Orchestration and Clustering • Control of Containers • Container Management Copyright 2015 by CloudsoftCorporationLimited
- 8. @grkvlt Who is using it? • Proof of Concept Stage • Financial Services • Insurance • Production • Multi-tenant Application Trial • Container per service • Testing • Clocker Copyright 2015 by CloudsoftCorporationLimited
- 9. @grkvlt Where can I find it? • Open Source • Apache 2.0 Licensed • http://clocker.io/ • Status • Working towards 1.0.0 • 1.0.0-PRE.20150630 • 1.1.0-SNAPSHOT • Testers welcome! Copyright 2015 by CloudsoftCorporationLimited
- 10. What is Clocker?What is Clocker?
- 11. @grkvlt Clocker and Brooklyn • What is it? • Brooklyn Application • Brooklyn Location • What does it provide? • First Class Docker Support in Brooklyn • Optimized Brooklyn Blueprints for Docker • Container Orchestration Copyright 2015 by CloudsoftCorporationLimited
- 12. @grkvlt Apache Brooklyn • Apache Brooklyn • Open Source • Java • Donated to the Apache Software Foundation • ASF Incubator Status • 0.7.0-incubating Copyright 2015 by CloudsoftCorporationLimited
- 13. @grkvlt Apache Brooklyn • Application Management Platform • Deploy, Manage and Monitor Blueprints • Provisioning, Installation and Customization • Management • AutoScaling • Resilience • Security Copyright 2015 by CloudsoftCorporationLimited
- 14. @grkvlt Apache jclouds • Java Cloud Library • API Agnostic • CloudStack, OpenStack, AWS EC2, GCE… • Create Virtual Machines • Return SSH Endpoint • Manage Properties Copyright 2015 by CloudsoftCorporationLimited
- 15. @grkvlt Apache jclouds • Drivers for REST APIs • Docker Driver • Written by @turlinux • Virtual Container • Using SSH Daemon or native Docker • Same ComputeNode abstraction as VM • Can use any Image or Dockerfile Copyright 2015 by CloudsoftCorporationLimited
- 16. @grkvlt Docker • Popular • Large Ecosystem • Growing • Complex • Containers • Isolation • Performance • Composable • Ubiquitous Copyright 2015 by CloudsoftCorporationLimited
- 17. @grkvlt Docker Copyright 2015 by CloudsoftCorporationLimited
- 19. @grkvlt Brooklyn Blueprints • Describe Applications • OASIS CAMP Standard • List of Services • NoSQL Database Clusters • Web Servers and Load Balancers • Shell or Python Scripts • Tree Structure • Sensors, Effectors and Policies Copyright 2015 by CloudsoftCorporationLimited
- 20. @grkvlt Blueprint Example name: appserver-‐w-‐policy services: -‐ type: brooklyn.entity.webapp.ControlledDynamicWebAppCluster initialSize: 1 memberSpec: $brooklyn:entitySpec: type: brooklyn.entity.webapp.jboss.JBoss7Server brooklyn.config: wars.root: http://search.maven.org/remotecontent?filepath=io/brooklyn/example/brooklyn-‐example-‐hello-‐world-‐sql-‐webapp/0.6.0/brooklyn-‐example-‐hello-‐ world-‐sql-‐webapp-‐0.6.0.war http.port: 8080+ java.sysprops: brooklyn.example.db.url: $brooklyn:formatString("jdbc:%s%s?user=%s&password=%s", component("db").attributeWhenReady("datastore.url"), "visitors", "brooklyn", "br00k11n") brooklyn.policies: -‐ policyType: brooklyn.policy.autoscaling.AutoScalerPolicy brooklyn.config: metric: $brooklyn:sensor("brooklyn.entity.webapp.DynamicWebAppCluster", "webapp.reqs.perSec.windowed.perNode") metricLowerBound: 10 metricUpperBound: 100 minPoolSize: 1 maxPoolSize: 5 -‐ type: brooklyn.entity.database.mysql.MySqlNode id: db name: DB HelloWorld Visitors brooklyn.config: datastore.creation.script.url: https://github.com/apache/incubator-‐brooklyn/raw/master/usage/launcher/src/test/resources/visitors-‐creation-‐script.sql Copyright 2015 by CloudsoftCorporationLimited
- 21. @grkvlt Application Management • Policies • Sensor Data Driven • Auto Scaling • Cluster Management • Resilience and Failover • Follow the Sun Copyright 2015 by CloudsoftCorporationLimited
- 22. @grkvlt Docker Cloud • Brooklyn Blueprint for Docker Cluster • Docker Engine on Cloud VM or Bare Metal • Configuration for Host • TLS Certificates • Setup Volumes • Logging • Install SDN Agents • Manage Capacity or Headroom Copyright 2015 by CloudsoftCorporationLimited
- 23. @grkvlt Clocker Blueprints Copyright 2015 by CloudsoftCorporationLimited
- 24. @grkvlt Docker Cloud 1. On-demand 2. Multi-Tenant 3. Hardware Independent 4. Application Level Copyright 2015 by CloudsoftCorporationLimited
- 25. @grkvlt Simple Architecture Copyright 2015 by CloudsoftCorporationLimited
- 26. @grkvlt Clocker 1.x Architecture Copyright 2015 by CloudsoftCorporationLimited
- 27. @grkvlt Clocker Features • Docker Extensions to Brooklyn –Docker Image as First-Class Service Type –Placement Strategies for Containers –Create Docker Images and Networks • Manages Docker Engine and Swarm –Deployment and Management –Installation and Configuration –Software-Defined Networking Copyright 2015 by CloudsoftCorporationLimited
- 29. @grkvlt Clocker Features • Application Deployment –Oasis CAMP YAML Blueprint –TOSCA and Compose in Development –Same as Core Brooklyn • Mixed Destinations –Some Virtual Machines –Some Bare Metal –Some Containers Copyright 2015 by CloudsoftCorporationLimited
- 30. @grkvlt Clocker Orchestration Copyright 2015 by CloudsoftCorporationLimited Docker Engine Virtual Machine Container Clocker Network Segment SDN Provider Cloud Provider Brooklyn
- 31. @grkvlt Docker Cloud Internals • Container Management • Placement and Provisioning • Constraints and Labels • Autonomics • Policies and Scaling • Headroom • Networks Copyright 2015 by CloudsoftCorporationLimited
- 32. @grkvlt Container Management • Sources • Docker Image Definition • Docker Hub • Dockerfile • Brooklyn Entity Definition • Create Image Automatically • Commit or Push for Reuse Copyright 2015 by CloudsoftCorporationLimited
- 33. @grkvlt Container Management • Installation of Service • Defined by Brooklyn or Dockerfile • Common to all Entity Instances • Commit Image • Available for next Entity • Push Image • Available for all Hosts Copyright 2015 by CloudsoftCorporationLimited
- 34. @grkvlt Application Blueprints Copyright 2015 by CloudsoftCorporationLimited id: docker-‐mysql name: "Docker Hub MySQL Server" origin: "https://registry.hub.docker.com/_/mysql/" locations: -‐ my-‐docker-‐cloud services: -‐ type: docker:mysql:5.7 openPorts: -‐ 3306 directPorts: -‐ 3306 env: MYSQL_ROOT_PASSWORD: "s3kr3t" id: docker-‐mysql name: "Docker Hub MySQL Server" origin: "https://registry.hub.docker.com/_/mysql/" locations: -‐ my-‐docker-‐cloud services: -‐ type: docker:mysql:5.7 openPorts: -‐ 3306 directPorts: -‐ 3306 env: MYSQL_ROOT_PASSWORD: "s3kr3t" id: docker-‐jboss name: "Docker Hub JBoss Server" origin: "https://registry.hub.docker.com/_/jboss/" locations: -‐ my-‐docker-‐cloud services: -‐ type: docker:jboss/wildfly:8.2.0.Final openPorts: -‐ 8080 -‐ 9990 directPorts: -‐ 8080 id: docker-‐jboss name: "Docker Hub JBoss Server" origin: "https://registry.hub.docker.com/_/jboss/" locations: -‐ my-‐docker-‐cloud services: -‐ type: docker:jboss/wildfly:8.2.0.Final openPorts: -‐ 8080 -‐ 9990 directPorts: -‐ 8080 id: docker-‐redis name: "Docker Hub Redis Service" origin: "https://registry.hub.docker.com/_/redis/" locations: -‐ my-‐docker-‐cloud services: -‐ type: docker:redis openPorts: -‐ 6379 directPorts: -‐ 6379 id: docker-‐redis name: "Docker Hub Redis Service" origin: "https://registry.hub.docker.com/_/redis/" locations: -‐ my-‐docker-‐cloud services: -‐ type: docker:redis openPorts: -‐ 6379 directPorts: -‐ 6379
- 35. @grkvlt Application Blueprints Copyright 2015 by CloudsoftCorporationLimited id: dockerfile-‐mysql name: "Docker Hub LAMP Stack" locations: -‐my-‐docker-‐cloud services: -‐ type: docker:mysql:5.7.5 id: mysql env: MYSQL_ROOT_PASSWORD: "s3cr3t" -‐ type: docker:grkvlt/myapp:latest id: application env: MYSQL_HOST: component(”mysql").attributeWhenReady("host.hostname") id: dockerfile-‐mysql name: "Docker Hub LAMP Stack" locations: -‐my-‐docker-‐cloud services: -‐ type: docker:mysql:5.7.5 id: mysql env: MYSQL_ROOT_PASSWORD: "s3cr3t" -‐ type: docker:grkvlt/myapp:latest id: application env: MYSQL_HOST: component(”mysql").attributeWhenReady("host.hostname")
- 36. @grkvlt Container Placement • Demand • Adding an Application • Scaling existing Application • Requirements • Host Location • Service Resources • CPU, Memory, Network • Labels Copyright 2015 by CloudsoftCorporationLimited
- 37. @grkvlt Container Placement • Supply • Choose a Host from available • Create new Host • Start Container • Set CPU and Memory • Attach to Network Copyright 2015 by CloudsoftCorporationLimited
- 38. @grkvlt Container Placement • Placement Strategies • Filter Hosts • Sort Hosts • Information from • Docker • Underlying Machine • Cloud Environment • Entity or Service Copyright 2015 by CloudsoftCorporationLimited
- 39. @grkvlt Container Placement • Placement Strategies • Random, Depth or Breadth First • CPU or Memory Usage • Memory, CPU or Container Limits • Geographic Constraints • User Defined • Java Predicate Copyright 2015 by CloudsoftCorporationLimited
- 40. @grkvlt Autonomics • Brooklyn Policies • Attached to Entities in Application • Nothing Docker Specific • Elastic Scaling • Cluster Resizing • Sensor Driven • Service Resilience and Replacement Copyright 2015 by CloudsoftCorporationLimited
- 41. @grkvlt Headroom • Ensure resources available • Based on MaxContainers strategy limit • Or Percentage Utilisation • Or CPU and RAM allocation • Scale Docker Host Cluster Automatically • Add new Docker hosts • Remove empty Docker hosts Copyright 2015 by CloudsoftCorporationLimited
- 43. @grkvlt Software-Defined Networking • Needed for Seamless Provisioning • Host to Host Communication • Same LAN Segment • No Port Forwarding • Natural Application Configuration • Initial Driver was EPMD Applications Copyright 2015 by CloudsoftCorporationLimited
- 44. @grkvlt Networking Providers • Standardized Interfaces • Pluggable Providers • Weave • Metaswitch Calico • IBM OpenDOVE • Same Basic Features • Extensions provided by configuration Copyright 2015 by CloudsoftCorporationLimited
- 45. @grkvlt Networking Providers • Implementation Agnostic • L2 over L3 etc. • Similar to Hypervisor in Clouds • Generic Interfaces • Host Component • Service Component (or Endpoint) Copyright 2015 by CloudsoftCorporationLimited
- 46. @grkvlt Networking Capabilities • Provide Multiple Networks • Single Application or Shared • Private Addresses • Segmented by CIDR • Docker Port Forwarding Access • Debug Mechanism Copyright 2015 by CloudsoftCorporationLimited
- 47. @grkvlt Metaswitch Project Calico • SDN for Bare Metal, VMs and Containers • Layer 3 (with adorable kittens) • Uses OS IP routing and forwarding • Configuration in an etcd Cluster • Version 0.4 now available • Uses profiles for container ACLs • Spans VMs and Containers • OpenStack Neutron network driver Copyright 2015 by CloudsoftCorporationLimited
- 48. @grkvlt Clocker Networking ContainerHost SDN Bridge Container Internet SDN Gateway Copyright 2015 by CloudsoftCorporationLimited
- 49. @grkvlt Networking Capabilities • IP Pool Controlled by Clocker • Clocker Controls Subnet Allocation • Applications Segmented by CIDR • Delegate to SDN or Cloud • Bring your own IP • Both Weave and Calico offer this now Copyright 2015 by CloudsoftCorporationLimited
- 50. @grkvlt Networking Capabilities • Wide Area and Multi Region SDN • Cross Platform SDN • Both VMs and Containers on one VLAN • Name Resolution • Contributing to Weave DNS for orchestration • Use traditional external BIND service entity Copyright 2015 by CloudsoftCorporationLimited
- 51. @grkvltCopyright 2015 by CloudsoftCorporationLimited Cross-Target Deployment
- 52. @grkvlt Virtual Network Entity • Clocker Specific Entity • Provisions a Virtual Network or Subnet • Looks for NetworkProvisioningExtension • Registered in DockerLocation by SDN Provider • Also defined with JcloudsLocation for OpenStack • Part of Application Blueprint Copyright 2015 by CloudsoftCorporationLimited
- 53. @grkvlt Network Provisioning • Create Named Virtual Networks • Uses Available Provider • Currently Weave, Calico and OpenStack Neutron Supported -‐ type: brooklyn.networking.VirtualNetwork networkId: my-‐application cidr: 192.168.12.0/24 gateway: 192.168.12.1 dnsServers: -‐ 8.8.8.8 brooklyn.config: sdn.example.securityGroup: "my-‐security-‐group" Copyright 2015 by CloudsoftCorporationLimited
- 54. @grkvlt Network Provisioning • Allow Minimal (Zero!) Configuration • Use Sensible Defaults • Also SDN or Cloud Specific Configuration, e.g. Calico or OpenStack • Allocate Address Space on Demand -‐ type: brooklyn.networking.OpenStackVirtualNetwork networkId: database-‐net cidr: 192.168.34.0/24 -‐ type: brooklyn.networking.VirtualNetwork networkId: couchbase-‐net Copyright 2015 by CloudsoftCorporationLimited
- 55. @grkvlt Network Provisioning • Attach Containers to Networks brooklyn.config: network.list: -‐ couchbase-‐net -‐ management-‐net • Create Networks as Required • Also Attach to VMs and Metal • Only supported with Calico at present Copyright 2015 by CloudsoftCorporationLimited
- 57. @grkvltCopyright 2015 by CloudsoftCorporationLimited Clocker Console 1
- 58. @grkvltCopyright 2015 by CloudsoftCorporationLimited Clocker Console 2
- 59. @grkvlt • Orchestrated Docker 1.7.0 deployment with Calico SDN integration • Automated attachment of containers to multiple dynamic networks • Brooklyn application blueprints with network topology Copyright 2015 by CloudsoftCorporationLimited Features
- 61. @grkvlt • Latest Docker 1.7.x Feature Support • Stats command • Read-only containers • Named Dockerfiles • Swarm • Native API for access to managed Docker Cloud • Clocker as an extension to Swarm using Powerstrip • Docker Registry Copyright 2015 by CloudsoftCorporationLimited New Features
- 62. @grkvlt • Lightweight Images • No SSH server • Minimal Alpine base distribution • Getting Started • Dockerfile and images on Docker Hub • Vagrantfile for local or remote VMs Copyright 2015 by CloudsoftCorporationLimited New Features
- 63. @grkvlt New Features • Multi Region • Use Swarm and labels to decide where to run • More than one Cloud provider (modulo SDN) • Better Native Docker Support • No more SSH per container • Minimize images with Alpine • Cross-target Applications • Virtual Machine and Container services Copyright 2015 by CloudsoftCorporationLimited
- 64. @grkvlt Roadmap • Mesos Integration • Deploy the Mesos Infrastructure • Provide Mesos as another Brooklyn endpoint • Container Mobility • Stateless Services • Defined in Blueprint • Brooklyn Core Integration Copyright 2015 by CloudsoftCorporationLimited
- 65. @grkvlt Roadmap Copyright 2015 by CloudsoftCorporationLimited
- 66. @grkvlt Roadmap • Docker Experimental Features • Separate release for now • Not yet stable • More networking providers • Integrated Flocker plugin • Clocker Experimental Release • Coming soon... Copyright 2015 by CloudsoftCorporationLimited
- 67. @grkvlt Roadmap • Docker Enterprise Hub • Logging with ELK • Application Definition • Docker Compose via Application Definition WG • Networking • Weave DNS Integration • Kubernetes Support Copyright 2015 by CloudsoftCorporationLimited
- 68. Solves: – Composite Application Management – Docker Cloud Networking – Container Placement and Provisioning Solves: – Composite Application Management – Docker Cloud Networking – Container Placement and Provisioning SummarySummary