Ansible Role: Zookeeper

An Ansible role that installs Apache Zookeeper in either a standalone or replicated environment. Test with Zookeeper version 3.6.1.

Requirements

You must be running a Linux OS that has systemd enabled by default (CentOS 7, CentOS 8, Ubuntu 18.04 and Ubuntu 20.04).

Role Variables

Name of system host group in /etc/ansible/hosts to automatically configure the replicated environment.

zookeeper_ansible_host_group: zookeeper

Variable name of the Ansible fact to be used in conf/zoo.conf to define the servers in the cluster.

zookeeper_server_variable: ansible_ssh_host

Version of Zookeeper to install.

zookeeper_version: 3.4.7

tickTime variable in conf/zoo.cfg.

zookeeper_tick_time: 2000

initLimit variable in conf/zoo.cfg.

zookeeper_init_limit: 10

syncLimit variable in conf/zoo.cfg.

zookeeper_sync_limit: 5

Directory where Zookeeper data is stored.

zookeeper_data_dir: /tmp/zookeeper/

Zookeeper client port.

zookeeper_client_port: 2181

maxClientCnxns variable in conf/zoo.cfg.

zookeeper_max_client_cnxns: 60

Directory where Zookeeper logs are stored.

zookeeper_log_dir: /tmp/

Dependencies

None

Example Playbook

Example zookeeper_playbook.yml:

- hosts: zookeeper
  sudo: yes

  vars:
    zookeeper_version: 3.6.1

  roles:
    - zookeeper

Example /etc/ansible/hosts:

[zookeeper]
zookeeper-0 zookeeper_id=0
zookeeper-1 zookeeper_id=1
zookeeper-2 zookeeper_id=2

License

BSD

Author Information

Kevin Coakley (https://github.com/kevincoakley)