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David Chung
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conditional execution in template pipeline; playbook example (#482)
Signed-off-by: David Chung <[email protected]>
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‎docs/playbooks/intro/README.md

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Intro to Infrakit
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=================
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This playbook introduces the user to Infrakit and some basic operations.
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+ Start up infrakit in Docker containers
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+ Stop infrakit
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+ Provision instances
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+ Metadata
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+ Events
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For more information, see [infrakit website](https://github.com/docker/infrakit)

‎docs/playbooks/intro/aws/index.ikb

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# Create a single instance
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provision-instance : provision-instance.ikt

‎docs/playbooks/intro/aws/provision-instance.ikt

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# Input to create instance using the AWS instance plugin
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{{/* =% sh %= */}}
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{{ $user := flag "user" "string" "username" | prompt "Please enter your user name:" "string" (env "USER")}}
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{{ $name := flag "name" "string" "name" | prompt "Name?" "string"}}
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{{ $imageId := flag "ami" "string" "ami" | prompt "AMI?" "string"}}
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{{ $instanceType := flag "instance-type" "string" "instance type" | prompt "Instance type?" "string"}}
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{{ $keyName := flag "key" "string" "ssh key name" | prompt "SSH key?" "string"}}
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{{ $az := flag "az" "string" "availability zone" | prompt "Availability zone?" "string"}}
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{{ $subnetId := flag "subnet" "string" "subnet id" | prompt "Subnet ID?" "string"}}
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{{ $securityGroupId := flag "security-group-id" "string" "security group id" | prompt "Security group ID?" "string" }}
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infrakit --log 3 --log-stack --name instance-aws/ec2-instance instance provision -y - <<EOF
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Tags:
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infrakit.name: {{ $name }}
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infrakit.created: {{ now | htmlDate }}
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infrakit.user: {{ $user }}
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Init: |
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#!/bin/bash
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sudo apt-get update -y
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sudo apt-get install wget curl
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Properties:
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RunInstancesInput:
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BlockDeviceMappings: null
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DisableApiTermination: null
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EbsOptimized: null
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IamInstanceProfile: null
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ImageId: {{ $imageId }}
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InstanceInitiatedShutdownBehavior: null
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InstanceType: {{ $instanceType }}
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KeyName: {{ $keyName }}
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NetworkInterfaces:
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- AssociatePublicIpAddress: true
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DeleteOnTermination: true
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DeviceIndex: 0
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Groups:
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- {{ $securityGroupId }}
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NetworkInterfaceId: null
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SubnetId: {{ $subnetId }}
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Placement:
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Affinity: null
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AvailabilityZone: {{ $az }}
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Tenancy: null
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RamdiskId: null
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SubnetId: null
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UserData: null
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Tags:
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infrakit.name: {{ $name }}
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EOF

‎docs/playbooks/intro/aws/start-plugin.ikt

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{{/* =% sh %= */}}
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{{ $aws := flag "start-aws" "bool" "Start AWS plugin" | prompt "Start AWS plugin?" "bool" "no" }}
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{{ $profile := flag "aws-cred-profile" "string" "Profile name for credentials" | cond $aws | prompt "What's the profile for your .aws/credentials?" "string" "default" }}
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{{ $project := flag "project" "string" "Project name" | cond $aws | prompt "What's the name of the project?" "string" "testproject"}}
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{{ $region := flag "region" "string" "aws region" | cond $aws | prompt "What's the region?" "string" "us-west-1"}}
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{{ $awsImage := flag "aws-plugin" "string" "Image of the plugin" | cond $aws | prompt "What's the AWS plugin image?" "string" "infrakit/aws:dev" }}
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{{ if $aws }}
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echo "Starting AWS plugin"
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{{/* Pick a credential from the local user's ~/.aws folder. You should have this if you use awscli. */}}
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{{ $creds := (source (cat "file://" (env "HOME") "/.aws/credentials" | nospace) | iniDecode | k $profile ) }}
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{{ $infrakit := (cat (env "HOME") "/.infrakit/" | nospace) }}
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{{ $dockerEnvs := "-e INFRAKIT_HOME=/infrakit -e INFRAKIT_PLUGINS_DIR=/infrakit/plugins" }}
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{{/* Show helpful message to user if we can find the credentials */}}
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{{ if not (empty $creds) }}{{ echo "Found your credential for profile" $profile }}
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{{ end }}
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{{ if not (empty $creds) }}
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docker run -d --volumes-from infrakit --name instance-aws {{ $awsImage }} \
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infrakit-instance-aws --name instance-aws \
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--namespace-tags {{cat "infrakit.scope=" $project | nospace}} \
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--access-key-id {{ $creds.aws_access_key_id }} \
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--secret-access-key {{ $creds.aws_secret_access_key }} \
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--region {{ $region }} --log 5
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{{ end }}
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{{ end }}

‎docs/playbooks/intro/events/index.ikb

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# Another index file that tells infrakit what other commands are here.
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timer : tail.ikt # TODO - maybe add ability to pass in args?
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ls : ls.ikt

‎docs/playbooks/intro/events/ls.ikt

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{{/* =% sh %= */}}
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infrakit -H http://localhost:4358 event ls -al

‎docs/playbooks/intro/events/tail.ikt

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{{/* =% sh %= */}}
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{{ $topic := flag "topic" "string" "Topic to watch" | prompt "What topic?" "string" "event-time/timer/msec/100" }}
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infrakit -H http://localhost:4358 event tail {{ $topic }}

‎docs/playbooks/intro/index.ikb

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# An index file. This file can be of any extension but the convention is to use .ikb (for InfraKit playBook)
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# Starts the infrakit daemons using a common data volume for sockets and files
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start-infrakit : start-infrakit.ikt
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# Stops all the infrakit daemons
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stop-infrakit : stop-infrakit.ikt
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# Here is a submodule. We point to a index.ikb (you can call whatever but nice to have convention) in a sub folder:
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events : events/index.ikb
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aws : aws/index.ikb
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gcp : gcp/index.ikb

‎docs/playbooks/intro/start-infrakit.ikt

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# Starts all infrakit containers
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{{/* =% sh %= */}}
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{{ $image := flag "infrakit-image" "string" "Infrakit image" | prompt "Infrakit image?" "string" "infrakit/devbundle:dev" }}
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{{ $port := flag "infrakit-port" "int" "Infrakit mux port" | prompt "Infrakit port for remote access?" "int" 24864 }}
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{{/* optional plugins */}}
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echo "Starting up infrakit base... You can connect to it at infrakit -H localhost:{{$port}}"
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docker run -d --name infrakit \
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-v /var/run/docker.sock:/var/run/docker.sock \
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-v `pwd`:/project \
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-p {{$port}}:24864 \
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{{ $image }} infrakit util mux --log 5
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# Start a development mode fileserver
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# Start a network for connecting to it
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docker network create --attachable infrakit
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docker run -d --volumes-from infrakit --name playbooks.com \
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--network infrakit \
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--expose 80 \
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{{ $image }} infrakit util fileserver --listen :80 /project
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docker run -d --volumes-from infrakit --name time {{ $image }} infrakit-event-time
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docker run -d --volumes-from infrakit --name vanilla {{ $image }} infrakit-flavor-vanilla
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docker run -d --volumes-from infrakit --name group-stateless {{ $image }} infrakit-group-default --name group-stateless
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# The leader file -- only required for local store
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docker run --rm --volumes-from infrakit {{ $image }} /bin/sh -c "echo group > /infrakit/leader"
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docker run -d --volumes-from infrakit --name manager \
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{{ $image }} infrakit-manager --proxy-for-group group-stateless os
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{{/* Here we just source a file in the same folder for more reuse and modularity */}}
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{{ source "aws/start-plugin.ikt" }}

‎docs/playbooks/intro/stop-infrakit.ikt

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# Stops all infrakit containers
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{{/* This is a directive that says run this template as a sh script */}}
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{{/* =% sh %= */}}
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{{/* We use a prompt to ask the user if we really want to stop. Note the nil at the end, it's required. */}}
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{{ $ok := prompt "Are you really sure you want to stop infrakit?" "bool" "no" nil }}
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{{ if $ok }}
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echo "Stopping Infrakit"
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docker ps -f ancestor=infrakit/devbundle:dev -qa | xargs docker stop
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docker ps -f ancestor=infrakit/devbundle:dev -qa | xargs docker rm
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docker ps -f ancestor=infrakit/aws:dev -qa | xargs docker stop
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docker ps -f ancestor=infrakit/aws:dev -qa | xargs docker rm
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docker network rm infrakit
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{{ else }}
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echo "Not stopping Infrakit"
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{{ end }}

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