Ansible部署系列续：（一）安装zookeeper

1. 安装zookeeper

1.1. 说明

由于之前的项目用到Kafka，旧版的Kafka需要用到zookeeper，在这里也记录一下。
myid从1开始
ansiblehosts文件

[zookeeperservers]
sz-1 zk_myid=1
sz-2 zk_myid=2

vars.yml添加参数

ZOOKEEPER_DATA_DIR: /home/data/zookeeper/data

1.2. yml脚本

---
- hosts: zookeeperservers
  remote_user: root
  vars_files:
    - ../vars.yml

  tasks:
    - name: copy and unzip zookeeper
      unarchive:
        src: "{{ PLAYBOOK_DIR }}/files/apache-zookeeper-3.6.1-bin.tar.gz"
        dest: "{{ INSTALL_DIR }}"

    - name: mkdir ditectory for zookeeper data
      file:
        dest: "{{ ZOOKEEPER_DATA_DIR }}"
        mode: 0755
        state: directory
        owner: root
        group: root

    - name: Copy myid file
      template:
        src: "{{ PLAYBOOK_DIR }}/zookeeper/templates/myid.j2"
        dest: "{{ ZOOKEEPER_DATA_DIR }}/myid"
        owner: root
        group: root
        mode: 0755

    - name: install properties file for zookeeper
      template:
        src: "{{ PLAYBOOK_DIR }}/zookeeper/templates/zoo.cfg.j2"
        dest: "{{ INSTALL_DIR }}/apache-zookeeper-3.6.1-bin/conf/zoo.cfg"
        owner: root
        group: root
        mode: 0755
        
    - name: firewarld add 2888
      firewalld:
        port: 2888/tcp
        permanent: true
        immediate: true
        zone: public
        state: enabled
    - name: firewarld add 3888
      firewalld:
        port: 3888/tcp
        permanent: true
        immediate: true
        zone: public
        state: enabled

    - name: start zookeeper
      shell: "{{ INSTALL_DIR }}/apache-zookeeper-3.6.1-bin/bin/zkServer.sh start"

      tags:
        - start zookeeper

1.3. 模板文件

因为搭建的是集群环境，因此都需要配置节点

1.3.1 zoo.cfg.j2

# The number of milliseconds of each tick
tickTime=2000
# The number of ticks that the initial 
# synchronization phase can take
initLimit=5
# The number of ticks that can pass between 
# sending a request and getting an acknowledgement
syncLimit=2
# the directory where the snapshot is stored.
# do not use /tmp for storage, /tmp here is just 
# example sakes.
dataDir={{ ZOOKEEPER_DATA_DIR }}
# the port at which the clients will connect
clientPort=2181
# the maximum number of client connections.
# increase this if you need to handle more clients
#maxClientCnxns=60
#
# Be sure to read the maintenance section of the 
# administrator guide before turning on autopurge.
#
# http://zookeeper.apache.org/doc/current/zookeeperAdmin.html#sc_maintenance
#
# The number of snapshots to retain in dataDir
#autopurge.snapRetainCount=3
# Purge task interval in hours
# Set to "0" to disable auto purge feature
#autopurge.purgeInterval=1

## Metrics Providers
#
# https://prometheus.io Metrics Exporter
#metricsProvider.className=org.apache.zookeeper.metrics.prometheus.PrometheusMetricsProvider
#metricsProvider.httpPort=7000
#metricsProvider.exportJvmInfo=true

{% for host in groups['zookeeperservers'] %}
{%- if hostvars[host].inventory_hostname == ansible_default_ipv4.address -%}
server.{{ hostvars[host].zk_myid }}=0.0.0.0:2888:3888
{% else %}
server.{{ hostvars[host].zk_myid }}={{ hostvars[host].inventory_hostname }}:2888:3888
{% endif %}
{% endfor %}

1.3.2 myid.j2

{{ zk_myid }}

1.4. 运行ansible-playbook

ansible-playbook -i /etc/ansible/hosts zookeeper/main.yml