---
- name: Configure Consul Persistent Storage
  hosts: ch4,ash3c,warden
  become: yes
  gather_facts: yes
  
  vars:
    consul_data_dir: "/opt/consul/data"
    nomad_config_file: "/etc/nomad.d/nomad.hcl"
    
  tasks:
    - name: Create consul data directory
      file:
        path: "{{ consul_data_dir }}"
        state: directory
        owner: nomad
        group: nomad
        mode: '0755'
      
    - name: Backup existing nomad configuration
      copy:
        src: "{{ nomad_config_file }}"
        dest: "{{ nomad_config_file }}.backup.{{ ansible_date_time.epoch }}"
        remote_src: yes
        backup: yes
      
    - name: Check if consul-data host volume already configured
      lineinfile:
        path: "{{ nomad_config_file }}"
        line: '  host_volume "consul-data" {'
        state: absent
      check_mode: yes
      register: consul_volume_check
      changed_when: false
      
    - name: Add consul-data host volume configuration
      blockinfile:
        path: "{{ nomad_config_file }}"
        marker: "# {mark} CONSUL PERSISTENT STORAGE"
        block: |
          
          # Consul 持久化存储
          client {
            host_volume "consul-data" {
              path      = "{{ consul_data_dir }}"
              read_only = false
            }
          }
        insertafter: EOF
      when: consul_volume_check is not changed
      notify: restart nomad
      
    - name: Verify consul data directory permissions
      file:
        path: "{{ consul_data_dir }}"
        owner: nomad
        group: nomad
        mode: '0755'
        state: directory
        
    - name: Display consul data directory info
      stat:
        path: "{{ consul_data_dir }}"
      register: consul_dir_stat
      
    - name: Show directory information
      debug:
        msg: |
          Consul data directory: {{ consul_data_dir }}
          Owner: {{ consul_dir_stat.stat.pw_name }}:{{ consul_dir_stat.stat.gr_name }}
          Permissions: {{ consul_dir_stat.stat.mode }}
          
  handlers:
    - name: restart nomad
      systemd:
        name: nomad
        state: restarted
        daemon_reload: yes
      
    - name: wait for nomad
      wait_for:
        port: 4646
        host: "{{ ansible_host }}"
        delay: 5
        timeout: 30
      listen: restart nomad
      
- name: Verify Nomad client status
  hosts: ch4,ash3c,warden
  become: yes
  gather_facts: no
  
  tasks:
    - name: Check nomad service status
      systemd:
        name: nomad
      register: nomad_status
      
    - name: Display nomad status
      debug:
        msg: |
          Node: {{ inventory_hostname }}
          Nomad Status: {{ nomad_status.status.ActiveState }}
          
    - name: Verify nomad client connectivity
      uri:
        url: "http://{{ ansible_host }}:4646/v1/status/leader"
        method: GET
        timeout: 10
      register: nomad_api_check
      ignore_errors: yes
      
    - name: Show connectivity result
      debug:
        msg: |
          Node: {{ inventory_hostname }}
          API Check: {{ 'SUCCESS' if nomad_api_check.status == 200 else 'FAILED' }}
          
- name: Summary Report
  hosts: localhost
  gather_facts: no
  run_once: true
  
  tasks:
    - name: Display completion summary
      debug:
        msg: |
          ✅ Consul 持久化存储配置完成！
          
          已配置节点: ch4, ash3c, warden
          数据目录: /opt/consul/data
          权限: nomad:nomad (755)
          
          下一步:
          1. 部署持久化 Consul job
          2. 验证集群状态
          3. 恢复 KV 数据