Running Docker in Production

Running Docker in Production
Using Apache Brooklyn, Clocker and Project Calico
Andrew Donald Kennedy

@grkvlt
Agenda
• Introduction
• Application Management
• Networking with Calico
• Demonstration
• Roadmap
• Questions
Copyright 2015 by Cloudsoft Corporation Limited

@grkvlt
Clocker Developers

@grkvlt
Clocker Statistics
•  Open Source
•  1+ Years Old
•  725 Commits
•  153 Pull Requests
•  11 Contributors
•  2 External
•  15 KLOC
•  26 Releases
http://www.redotheweb.com/CodeFlower/


@grkvlt
•  Application Management Platform
•  Deploy, Manage and Monitor Blueprints
•  Provisioning, Installation and Customization
•  Management
•  AutoScaling, Resilience, Performance, Security
Apache Brooklyn

@grkvlt
Apache jclouds
•  Java Cloud Library
•  API Agnostic
•  SoftLayer, OpenStack, AWS EC2, GCE…
•  Create Virtual Machines
•  Return SSH Endpoint
•  Create Containers
•  Docker REST API

@grkvlt
Docker
•  Containers
•  Isolation
•  Performance
•  Composable
•  Huge Ecosystem
•  Compute Abstraction
•  Process Wrapper

@grkvlt
•  So0ware-‐Deﬁned
Networking

•  Calico

•  Weave

•  Storage
and
Volume
Management

•  Flocker

•  More
Being
Developed…

•  Na.ve
Plugins

Docker Extras

@grkvltCopyright 2015 by Cloudsoft Corporation Limited
Apache Mesos ...
•  Distributed Systems Kernel
•  Cluster Management
•  Resource Sharing and Placement
•  Calico SDN Support
•  Frameworks
•  Aurora and Marathon
•  Riak, Spark, Hadoop, Storm et al
•  Brooklyn Scheduler

@grkvlt
What does it do?
1.  Spins up and Manages Docker
Clusters in the Clouds
2.  Serves up Containers on Demand
3.  Manages Composite Application
Deployments

@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

@grkvlt
Clocker and Brooklyn Summary
•  What is it?
•  Brooklyn Application
•  Brooklyn Location
•  What does it provide?
•  First Class Docker Support in Brooklyn
•  Optimized Brooklyn Blueprints for Docker
•  Container Orchestration

@grkvlt
Brooklyn Blueprints
•  Describe Applications
•  OASIS CAMP Standard
•  TOSCA and Compose in Development
•  List of Services
•  NoSQL Database Clusters
•  Web Servers and Load Balancers
•  Shell or Python Scripts
•  Targeting Multiple Destinations
•  VM, Container, Bare Metal
•  Sensors, Eﬀectors and Policies

@grkvlt
Application Management
•  Sensors
•  Data from Services
•  Eﬀectors
•  Brooklyn Policies
•  Attached to Entities in Application
•  Nothing Docker Specific
•  Elastic Scaling and Cluster Resizing
•  Service Resilience and Replacement

@grkvlt
Blueprint Example 1
id:
redis-‐service

name:
"Docker
Hub
Redis
Service"

origin:
"https://registry.hub.docker.com/_/redis/"

locations:

-‐
my-‐docker-‐cloud

services:

-‐
type:
docker:redis:3

id:
redis

openPorts:

-‐
6379

@grkvlt
Blueprint Example 2
id:
redis-‐cluster

name:
"Redis
Cluster"

locations:

-‐  jclouds:aws-‐ec2:

region:
eu-‐central-‐1

services:

-‐
type:
org.apache.brooklyn.entity.nosql.redis.RedisCluster

initialSize:
3

@grkvlt
Blueprint Example 3
id:
appserver-‐with-‐policy

name:
"Tomcat
Scaling
Webapp
Server"

location:
jclouds:aws-‐ec2:eu-‐west-‐1

services:

-‐
type:
org.apache.brooklyn.entity.webapp.ControlledDynamicWebAppCluster

initialSize:
3

memberSpec:

$brooklyn:entitySpec:

type:
org.apache.brooklyn.entity.webapp.tomcat.Tomcat8Server

brooklyn.config:

wars.root:

https://
s3-‐eu-‐west-‐1.amazonaws.com/brooklyn-‐clocker/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:
org.apache.brooklyn.policy.autoscaling.AutoScalerPolicy

brooklyn.config:

metric:
$brooklyn:sensor("org.apache.brooklyn.entity.webapp.DynamicWebAppCluster",
"webapp.reqs.perSec.windowed.perNode")

metricLowerBound:
10

metricUpperBound:
100

minPoolSize:
1

maxPoolSize:
5

-‐
type:
org.apache.brooklyn.entity.database.mysql.MySqlNode

id:
db

name:
DB
HelloWorld
Visitors

brooklyn.config:

datastore.creation.script.url:

https://
s3-‐eu-‐west-‐1.amazonaws.com/brooklyn-‐clocker/visitors-‐creation-‐script.sql


@grkvlt
Clocker Blueprints

@grkvlt
Docker Cloud
•  Brooklyn Blueprint for Docker Cluster
•  Docker Engine on Cloud VM or Bare Metal
•  Manage TLS Certificates and access credentials
•  Create and Mount Volumes
•  Setup Logging and Monitoring
•  Install SDN and other Agents
•  Configure local or remote Docker Registry
•  Manage Capacity or Headroom

@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

@grkvlt
Clocker 1.x Architecture

@grkvlt
Docker Cloud
1.  On-demand
2.  Multi-Tenant
3.  Hardware Independent
4.  Application Level

@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

@grkvlt
Container Management
•  Sources
•  Docker Image Definition
•  Docker Hub or Registry
•  Dockerfile
•  Brooklyn Entity Definition
•  Create Image Automatically
•  Commit or Push for Reuse

@grkvlt
Clocker Orchestration
Docker
Engine
Virtual
Machine
Container
Clocker
Network
Segment
SDN
Provider
Cloud
Provider
Brooklyn

@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
•  Useful for any opinionated applications

@grkvlt
Networking Providers
•  Implementation Agnostic
•  L2 overlay, L3 routing etc.
•  Similar to Hypervisor in Clouds
•  Generic Interfaces
•  Host Component
•  Service Component (or Endpoint)
•  Same idea as Docker Network Plugins

@grkvlt
Networking Capabilities
•  Attach Containers to Networks

•  Create Networks as Required
•  Also Attach to VMs and Metal
•  Provide Multiple Networks
•  Per-Application or Shared
•  Segmented Private Address Space
•  Docker Port Forwarding for Ingress

@grkvlt
Network Provisioning
•  Minimal (Zero!) Configuration
•  Use Sensible Defaults
•  Allows SDN or Cloud Specific Configuration
•  Allocate Address Space on Demand
•  IP Pool Controlled by Clocker
-‐
type:
brooklyn.networking.VirtualNetwork

networkId:
database-‐net

cidr:
192.168.34.0/24

gateway:
192.168.34.1

dnsServers:

-‐
$brooklyn:entity("bind-‐server").attributeWhenReady("host.address")

addIptablesRules:
true

-‐
type:
brooklyn.networking.OpenStackVirtualNetwork

networkId:
couchbase-‐net


@grkvlt
Clocker Networking
ContainerHost
SDN
Bridge
Container
Internet
SDN
Gateway

@grkvlt
Metaswitch Project Calico
•  SDN for Bare Metal, VMs and Containers
•  Layer 3
•  Uses OS IP routing and forwarding
•  Configuration in an etcd Cluster
•  Version 0.4.9 in Clocker
•  0.6.0 with libnetwork when Docker stable
•  Spans VMs and Containers
•  OpenStack Neutron network driver

@grkvltCopyright 2015 by Cloudsoft Corporation Limited
Cross-Target Deployment

@grkvlt
Networking Capabilities
•  Wide Area and Multi Region SDN
•  VPN or IPIP and NAT configuration
•  Cross Platform SDN
•  Both VMs and Containers on one VLAN
•  Name Resolution and Service Discovery
•  Contributing to Weave DNS for orchestration
•  Use traditional external BIND service entity
•  Brooklyn can inject correct endpoint address

@grkvlt
Application Blueprint 1
id:
my-‐application

location:

services:

-‐
type:
docker:redis:3

id:
redis

openPorts:
6379

-‐
type:
docker:amouat/dnmonster:1.0

id:
dnmonster

openPorts:
8080

-‐
type:
docker:amouat/identidock:1.0

id:
identidock

portBindings:

80:
9090

links:

-‐
$brooklyn:component("redis")

-‐
$brooklyn:component("dnmonster")

@grkvlt
id:
my-‐application

location:

services:

-‐
type:
org.apache.brooklyn.entity.nosql.redis.RedisStore

id:
redis

install.version:
3.0.0

-‐
type:

id:
dnmonster

openPorts:
8080

-‐
type:

id:
identidock

portBindings:

80:
9090

links:

-‐

-‐

@grkvlt
id:
my-‐application

location:

services:

-‐
type:

location:
jclouds:softlayer:ams01

id:
redis

install.version:
3.0.0

-‐
type:

id:
dnmonster

openPorts:
8080

-‐
type:

id:
identidock

portBindings:

80:
9090

links:

-‐

-‐

@grkvlt
id:
my-‐application

location:

services:

-‐
type:

id:
redis

install.version:
3.0.0

-‐
type:

id:
dnmonster

openPorts:
8080

-‐
type:

id:
identidock

portBindings:

80:
9090

links:

-‐

-‐

@grkvlt
id:
my-‐application

services:

-‐
type:

location:

id:
redis

install.version:
3.0.0

-‐
type:
marathon:amouat/dnmonster:1.0

location:
my-‐mesos-‐cluster

id:
dnmonster

openPorts:
8080

-‐
type:

location:

id:
identidock

portBindings:

80:
9090

links:

-‐

-‐

@grkvlt
•  Orchestrated Docker deployment and
configuration, with Project Calico SDN
•  Brooklyn application blueprints deployed with
network topology linked to OpenStack using
Project Calico
•  Automated attachment of containers to multiple
dynamic networks
•  Zero Config Multi-Target Deployment
Features

@grkvlt
Roadmap 1
•  Mesos Integration
•  View and manage existing Mesos clusters
•  Provide Mesos as another Brooklyn endpoint
•  Run Marathon tasks for Brooklyn entities
•  Future Possibilities...
•  Brooklyn as a Mesos framework or scheduler
•  Integrate with other frameworks like Riak BDP

@grkvlt
Roadmap 2

Clocker Solves:
– Docker Cloud Networking
– Container Placement and Provisioning
– Composite Application Management
Summary

@grkvlt
Resources
http://clocker.io/

http://brooklyn.io/

https://github.com/brooklyncentral/clocker/

https://github.com/apache/incubator-‐brooklyn/

https://github.com/Metaswitch/calico-‐docker/

https://github.com/weaveworks/weave/

http://blog.abstractvisitorpattern.co.uk/

Running Docker in Production

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