AMI that should be used to create virtual machines with Apache Zookeeper installed.

This script will create an AMI with Apache Zookeeper installed and with all of the required initialization scripts.

The AMI resulting from this script should be the one used to instantiate a Zookeeper server (standalone or cluster).

There are a couple of things needed for the script to work.

Packer and AWS Command Line Interface tools need to be installed on your local computer. To build a base image you have to know the id of the latest Debian AMI files for the region where you wish to build the AMI.

Packer installation instructions can be found here.

AWS Command Line Interface installation instructions can be found here

This AMI will be based on an official Debian AMI. The latest version of that AMI will be used.

A list of all the Debian AMI id's can be found at the Debian official page: Debian official Amazon EC2 Images

In order to create the AMI using this packer template you need to provide a few options.

Usage:
  packer build \
    -var 'aws_access_key=AWS_ACCESS_KEY' \
    -var 'aws_secret_key=<AWS_SECRET_KEY>' \
    -var 'aws_region=<AWS_REGION>' \
    -var 'zookeeper_version=<ZOOKEEPER_VERSION>' \
    [-var 'option=value'] \
    zookeeper.json

• aws_access_key - [required] The AWS access key.
• aws_ami_name - The AMI name (default value: "zookeeper").
• aws_ami_name_prefix - Prefix for the AMI name (default value: "").
• aws_instance_type - The instance type to use for the build (default value: "t2.micro").
• aws_region - [required] The regions were the build will be performed.
• aws_secret_key - [required] The AWS secret key.
• java_build_number - Java build number (default value: "11").
• java_major_version - Java major version (default value: "8").
• java_token - Java link token (default version: "d54c1d3a095b4ff2b6607d096fa80163").
• java_update_version - Java update version (default value: "131").
• system_locale - Locale for the system (default value: "en_US").
• zookeeper_version - [required] Zookeeper version.

In order to end up with a functional Zookeeper Cluster some configurations have to be performed after instantiating the servers.

To help perform those configurations a small script is included on the AWS image. The script is called zookeeper_config.

The script can and should be used to set some of the Zookeeper options as well as setting the Zookeeper service to start at boot.

Usage: zookeeper_config [options]

• -D - Disables the Zookeeper service from start at boot time.
• -E - Enables the Zookeeper service to start at boot time.
• -i <ID> - Sets the Zookeeper broker ID (default value is '1').
• -m <MEMORY> - Sets Zookeeper maximum heap size. Values should be provided following the same Java heap nomenclature.
• -n <ID:ADDRESS> - The ID and Address of a cluster node (e.g.: '1:127.0.0.1'). Should be used to set all the Zookeeper nodes. Several Zookeeper nodes can be set by either using extra -n options or if separated with a comma on the same -n option.
• -S - Starts the Zookeeper service after performing the required configurations (if any given).
• -W <SECONDS> - Waits the specified amount of seconds before starting the Zookeeper service (default value is '0').

To prepare an instance to act as a Zookeeper node the following steps need to be performed.

Run the configuration tool (zookeeper_config) to configure the instance.

zookeeper_config -E -S

After this steps a Zookeeper node (for a standalone setup) should be running and configured to start on server boot.

For a cluster with more than one Zookeeper node other options have to be configured on each instance using the same configuration tool (zookeeper_config).

zookeeper_config -E -i 1 -n 1:zookeeper01.mydomain.tld -n 2:zookeeper02.mydomain.tld,3:zookeeper03.mydomain.tld -S

After this steps, the first node of the Zookeeper cluster (for a three node cluster) should be running and configured to start on server boot.

More options can be used on the instance configuration, see the Configuration Script section for more details

This AMI will have the SSH service running as well as the Zookeeper services. The following ports will have to be configured on Security Groups.

1. Fork it!
2. Create your feature branch: git checkout -b my-new-feature
3. Commit your changes: git commit -am 'Add some feature'
4. Push to the branch: git push origin my-new-feature
5. Submit a pull request

Please read the CONTRIBUTING.md file for more details on how to contribute to this project.

This project uses SemVer for versioning. For the versions available, see the tags on this repository.

• Frederico Martins - fscm

See also the list of contributors who participated in this project.

This project is licensed under the MIT License - see the LICENSE file for details