Apache ZooKeeper
Ansible role for installing and configuring Apache ZooKeeper on ubuntu 18.04-lts.
This role can be used to install and cluster multiple ZooKeeper nodes, this uses all hosts defined for the "zookeeper-nodes" group in the inventory file by default. All servers are added to the zoo.cfg file along with the leader and election ports.
Requirements
Platform: ubuntu 18.04-lts
Java: Java 8
Role Variables
---
zookeeper_mirror: https://downloads.apache.org/zookeeper/stable
zookeeper_version: 3.5.8
zookeeper_package: apache-zookeeper-{{ zookeeper_version }}-bin.tar.gz
zookeeper_group: zookeeper
zookeeper_user: zookeeper
zookeeper_root_dir: /usr/share
zookeeper_install_dir: '{{ zookeeper_root_dir }}/apache-zookeeper-{{ zookeeper_version }}'
zookeeper_dir: '{{ zookeeper_root_dir }}/zookeeper'
zookeeper_log_dir: /var/log/zookeeper
zookeeper_data_dir: /var/lib/zookeeper
zookeeper_data_log_dir: /var/lib/zookeeper
zookeeper_client_port: 2181
zookeeper_id: 1
zookeeper_leader_port: 2888
zookeeper_election_port: 3888
zookeeper_servers: "{{groups['zookeeper-nodes']}}"
zookeeper_environment: {}Default Ports
| Port | Description |
|---|---|
| 2181 | Client connection port |
| 2888 | Quorum port for clustering |
| 3888 | Leader election port for clustering |
Default Directories and Files
| Description | Directory / File |
|---|---|
| Installation directory | /usr/share/apache-zookeeper-<version> |
| Symlink to install directory | /usr/share/zookeeper |
| Symlink to configuration | /etc/zookeeper/zoo.cfg |
| Log files | /var/log/zookeeper |
| Data directory for snapshots and myid file | /var/lib/zookeeper |
| Data directory for transaction log files | /var/lib/zookeeper |
| Systemd service | /etc/systemd/system/zookeeper.service |
| System Defaults | /etc/default/zookeeper |
Starting and Stopping ZooKeeper services
- The ZooKeeper service can be started via:
systemctl start zookeeper - The ZooKeeper service can be stopped via:
systemctl stop zookeeper
Dependencies
No dependencies
Deploying ansible-playbook
ansible-playbook -i inventory main.yml -vvv
to check Leader/follower
ansible-playbook -i inventory main.yml -vvv --tags zookeeper_testing
License
ilyes Ajroud