使用ansible 部署es集群，集群中有五台机器 安装包在 管理主机上 请给出代码示并注释

Sure, I'd be happy to help you with your question! Here's an example Ansible playbook that deploys an Elasticsearch cluster on five machines:

---
- hosts: elasticsearch
  become: yes

  vars:
    es_version: "7.10.2"
    es_heap_size: "2g"
    es_data_path: "/var/lib/elasticsearch"
    es_config_path: "/etc/elasticsearch"
    es_plugins:
      - name: "analysis-icu"
        url: "https://artifacts.elastic.co/downloads/elasticsearch-plugins/analysis-icu/analysis-icu-{{ es_version }}.zip"
      - name: "analysis-smartcn"
        url: "https://artifacts.elastic.co/downloads/elasticsearch-plugins/analysis-smartcn/analysis-smartcn-{{ es_version }}.zip"

  tasks:
    - name: Download Elasticsearch package
      get_url:
        url: "https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-{{ es_version }}-linux-x86_64.tar.gz"
        dest: "/tmp/elasticsearch-{{ es_version }}.tar.gz"

    - name: Extract Elasticsearch package
      unarchive:
        src: "/tmp/elasticsearch-{{ es_version }}.tar.gz"
        dest: "/opt/"
        remote_src: yes
        creates: "/opt/elasticsearch-{{ es_version }}"

    - name: Create Elasticsearch user
      user:
        name: elasticsearch
        system: yes
        createhome: yes

    - name: Set Elasticsearch system limits
      copy:
        dest: "/etc/security/limits.d/99-elasticsearch.conf"
        content: |
          elasticsearch soft memlock unlimited
          elasticsearch hard memlock unlimited

    - name: Copy Elasticsearch configuration files
      template:
        src: "templates/elasticsearch.yml.j2"
        dest: "{{ es_config_path }}/elasticsearch.yml"
        owner: elasticsearch
        group: elasticsearch
        mode: "0640"

    - name: Install Elasticsearch plugins
      shell: |
        /opt/elasticsearch-{{ es_version }}/bin/elasticsearch-plugin install {{ item.name }} --batch
      loop: "{{ es_plugins }}"

    - name: Start Elasticsearch service
      systemd:
        name: elasticsearch
        state: started
        enabled: yes

You'll need to create a `templates/elasticsearch.yml.j2` file in the same directory as your playbook, which contains the Elasticsearch configuration. Here's an example:

cluster.name: my-cluster
node.name: "{{ inventory_hostname }}"
path.data: "{{ es_data_path }}"
path.logs: "{{ es_data_path }}/logs"
network.host: "_site_"
discovery.seed_hosts: "{{ groups['elasticsearch'] | map('extract', hostvars, ['ansible_default_ipv4', 'address']) | list }}"
cluster.initial_master_nodes: "{{ groups['elasticsearch'][0] }}"
http.port: 9200
node.master: true
node.data: true
bootstrap.memory_lock: true
indices.memory.index_buffer_size: "40%"

To run the playbook, save it as `deploy_es.yml` and run:

ansible-playbook -i inventory.ini deploy_es.yml

Make sure to replace `inventory.ini` with the path to your inventory file, which should contain a `[elasticsearch]` group with the IP addresses of your five machines. Hope this helps!