Adding in Vagrant and Ansible configurations/setup for AWS EC2 Kafka …

…and MongoDB

kafka/Vagrantfile

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+# -*- mode: ruby -*-
+# vi: set ft=ruby :
+
+Vagrant.configure("2") do |config|
+  config.vm.box = "dummy"
+
+    config.vm.provider :aws do |aws, override|
+        aws.secret_access_key = ENV['AWS_SECRET_ACCESS_KEY']
+        aws.access_key_id = ENV['AWS_ACCESS_KEY_ID']
+        aws.keypair_name = ENV['AWS_KEYPAIR_NAME']
+        aws.ami = 'ami-a2490dc2'
+        aws.region = "us-west-1"
+        aws.instance_type = 'm3.large'
+        aws.security_groups = "mongodb"
+        aws.iam_instance_profile_name = 'mongodb'
+
+        aws.tags = {
+            "Name" => "Kafka Instance",
+           }
+        aws.block_device_mapping = [{
+            'DeviceName' => '/dev/sda1',
+            'Ebs.VolumeSize' => 16,
+            'Ebs.VolumeType' => 'gp2' }]
+
+        override.ssh.username = "ec2-user"
+        override.ssh.private_key_path = ENV['PRIVATE_AWS_SSH_KEY_PATH']
+        override.nfs.functional = false
+    end
+
+    config.vm.provision "ansible" do |ansible|
+        # ansible.verbose = 'vvvv'
+        ansible.playbook = "kafka.yml"
+    end
+end

kafka/ansible.cfg

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+[ssh_connection]
+control_path = /tmp/%%h-%%p-%%r
+
+[defaults]
+nocows=1
+host_key_checking = False

kafka/kafka.yml

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+---
+- hosts: all
+  roles:
+    - zookeeper
+    - kafka

kafka/roles/kafka/handlers/main.yml

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+---
+- name: start kafka
+  sudo: yes
+  shell: "{{kafka.symlink}}/bin/kafka-server-start.sh {{kafka.symlink}}/config/server.properties &"
+  args:
+    chdir: "{{kafka.symlink}}"
+  register: command_start_kafka

kafka/roles/kafka/tasks/main.yml

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+---
+- name: Get Kafka {{kafka.version}}
+  get_url: url={{kafka.url}} dest={{kafka.tgz}} timeout=60
+
+- name: Create the remote directory for Kafka
+  sudo: yes
+  file: path={{kafka.untar_to}} state=directory mode=0755
+
+- name: Unarchive Kafka
+  sudo: yes
+  unarchive: copy=no src={{kafka.tgz}} dest={{kafka.untar_to}}
+
+- name: Symlink to the Kafka version
+  sudo: yes
+  file: path={{kafka.symlink}} src={{kafka.symlink_to}} state=link
+
+- name: Generate the Kafka properties configuration
+  sudo: yes
+  template: src=server.properties.j2 dest=/usr/local/lib/kafka/config/server.properties mode=0644
+  notify:
+    - start kafka

kafka/roles/kafka/templates/server.properties.j2

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+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License.  You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# see kafka.server.KafkaConfig for additional details and defaults
+
+############################# Server Basics #############################
+
+# The id of the broker. This must be set to a unique integer for each broker.
+broker.id=0
+
+############################# Socket Server Settings #############################
+
+# The port the socket server listens on
+port=9092
+
+# Hostname the broker will bind to. If not set, the server will bind to all interfaces
+#host.name=localhost
+
+# Hostname the broker will advertise to producers and consumers. If not set, it uses the
+# value for "host.name" if configured.  Otherwise, it will use the value returned from
+# java.net.InetAddress.getCanonicalHostName().
+#advertised.host.name=<hostname routable by clients>
+
+# The port to publish to ZooKeeper for clients to use. If this is not set,
+# it will publish the same port that the broker binds to.
+#advertised.port=<port accessible by clients>
+
+# The number of threads handling network requests
+num.network.threads=3
+
+# The number of threads doing disk I/O
+num.io.threads=8
+
+# The send buffer (SO_SNDBUF) used by the socket server
+socket.send.buffer.bytes=102400
+
+# The receive buffer (SO_RCVBUF) used by the socket server
+socket.receive.buffer.bytes=102400
+
+# The maximum size of a request that the socket server will accept (protection against OOM)
+socket.request.max.bytes=104857600
+
+
+############################# Log Basics #############################
+
+# A comma seperated list of directories under which to store log files
+log.dirs=/var/log/kafka-logs
+
+# The default number of log partitions per topic. More partitions allow greater
+# parallelism for consumption, but this will also result in more files across
+# the brokers.
+num.partitions=1
+
+# The number of threads per data directory to be used for log recovery at startup and flushing at shutdown.
+# This value is recommended to be increased for installations with data dirs located in RAID array.
+num.recovery.threads.per.data.dir=1
+
+############################# Log Flush Policy #############################
+
+# Messages are immediately written to the filesystem but by default we only fsync() to sync
+# the OS cache lazily. The following configurations control the flush of data to disk.
+# There are a few important trade-offs here:
+#    1. Durability: Unflushed data may be lost if you are not using replication.
+#    2. Latency: Very large flush intervals may lead to latency spikes when the flush does occur as there will be a lot of data to flush.
+#    3. Throughput: The flush is generally the most expensive operation, and a small flush interval may lead to exceessive seeks.
+# The settings below allow one to configure the flush policy to flush data after a period of time or
+# every N messages (or both). This can be done globally and overridden on a per-topic basis.
+
+# The number of messages to accept before forcing a flush of data to disk
+#log.flush.interval.messages=10000
+
+# The maximum amount of time a message can sit in a log before we force a flush
+#log.flush.interval.ms=1000
+
+############################# Log Retention Policy #############################
+
+# The following configurations control the disposal of log segments. The policy can
+# be set to delete segments after a period of time, or after a given size has accumulated.
+# A segment will be deleted whenever *either* of these criteria are met. Deletion always happens
+# from the end of the log.
+
+# The minimum age of a log file to be eligible for deletion
+log.retention.hours=168
+
+# A size-based retention policy for logs. Segments are pruned from the log as long as the remaining
+# segments don't drop below log.retention.bytes.
+#log.retention.bytes=1073741824
+
+# The maximum size of a log segment file. When this size is reached a new log segment will be created.
+log.segment.bytes=1073741824
+
+# The interval at which log segments are checked to see if they can be deleted according
+# to the retention policies
+log.retention.check.interval.ms=300000
+
+# By default the log cleaner is disabled and the log retention policy will default to just delete segments after their retention expires.
+# If log.cleaner.enable=true is set the cleaner will be enabled and individual logs can then be marked for log compaction.
+log.cleaner.enable=false
+
+############################# Zookeeper #############################
+
+# Zookeeper connection string (see zookeeper docs for details).
+# This is a comma separated host:port pairs, each corresponding to a zk
+# server. e.g. "127.0.0.1:3000,127.0.0.1:3001,127.0.0.1:3002".
+# You can also append an optional chroot string to the urls to specify the
+# root directory for all kafka znodes.
+zookeeper.connect=localhost:2181
+
+# Timeout in ms for connecting to zookeeper
+zookeeper.connection.timeout.ms=6000

kafka/roles/kafka/vars/main.yml

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+---
+kafka:
+  version: 0.10.0.1
+  url: http://apache.mirrors.pair.com/kafka/0.10.0.1/kafka_2.11-0.10.0.1.tgz
+  tgz: /tmp/kafka_2.11-0.10.0.1.tgz
+  untar_to: /usr/local/lib
+  symlink_to: /usr/local/lib/kafka_2.11-0.10.0.1
+  symlink: /usr/local/lib/kafka

kafka/roles/zookeeper/handlers/main.yml

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+---
+- name: stop zookeeper
+  sudo: yes
+  command: bin/zkServer.sh stop
+  args:
+    chdir:  "{{zookeeper.symlink}}"
+    removes: /var/lib/zookeeper/zookeeper_server.pid
+
+- name: start zookeeper
+  sudo: yes
+  command: bin/zkServer.sh start
+  args:
+    chdir:   "{{zookeeper.symlink}}"
+    creates: /var/lib/zookeeper/zookeeper_server.pid
+  register: zookeeper_start_results
+  failed_when: "'FAILED' in zookeeper_start_results.stderr"

kafka/roles/zookeeper/tasks/main.yml

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+---
+- name: Update all packages
+  yum:  name=* state=latest
+  sudo: yes
+
+- name: download oracle java8
+  command: "wget -q -O {{java.java_archive}} --no-cookies --no-check-certificate --header 'Cookie: gpw_e24=http%3A%2F%2Fwww.oracle.com%2F; oraclelicense=accept-securebackup-cookie' {{java.java8_download_url}} creates={{java.java_archive}}"
+  sudo: yes
+
+- name: upack Java8 archive
+  sudo: yes
+  unarchive:
+    src={{java.java_archive}}
+    dest={{java.java8_download_folder}}
+    copy=no
+
+- name: fix Java8 ownership
+  sudo: yes
+  file:
+    state=directory
+    path={{java.java_name}}
+    owner=root
+    group=root
+    recurse=yes
+
+- name: make java available for system
+  sudo: yes
+  command: 'alternatives --install "/usr/bin/java" "java" "{{java.java_name}}/bin/java" 2000'
+
+- name: cleanup
+  sudo: yes
+  file:
+    state=absent
+    path={{java.java_archive}}
+
+- name: Download ZooKeeper {{zookeeper.version}}
+  get_url: url={{zookeeper.url}} dest={{zookeeper.tgz}} timeout=60
+
+- name: Create the remote directory for ZooKeeper
+  sudo: yes
+  file: path={{zookeeper.untar_to}} state=directory mode=0755
+
+- name: Unarchive ZooKeeper
+  sudo: yes
+  unarchive: copy=no src={{zookeeper.tgz}} dest={{zookeeper.untar_to}}
+
+- name: Symlink to the ZooKeeper version
+  sudo: yes
+  file: path={{zookeeper.symlink}} src={{zookeeper.symlink_to}} state=link
+
+- name: Create the ZooKeeper configuration
+  sudo: yes
+  template: src=zoo.cfg.j2 dest={{zookeeper.symlink}}/conf/zoo.cfg
+  notify:
+    - stop zookeeper
+    - start zookeeper

kafka/roles/zookeeper/templates/zoo.cfg.j2

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+tickTime=2000
+dataDir=/var/lib/zookeeper
+clientPort=2181