背景

经常出现访问某个git，或者 url的时候，会出现 失败，需要 重试逻辑

方案

- name: "[BASIC] [05_disk] handle disk mount logic for all spec"
  tags: mre-disk
  block: <<==0. 先搞一个block，在一个block里，所有register的变量作用域
    - name: "[BASIC] [05_disk] fetch machine spec from cmdb api"
      uri:
        url: "{{ devops_api.host }}/xxxxxxxxx"
        method: POST
        body: { "ip_query_condition": {"ip_scope": "bk_host_innerip", "exact_match": "1", "ip_list": ["{{ ansible_host }}"]} }
        body_format: json
      register: host_search  <<== 1. 将url的结果存到变量: host_search

    - debug: var= host_search  <<== 2. 打印host_search 的结果，做调试， 后面才知道 应该如何 写判断条件

    - name: "[BASIC] [05_disk] check if the server is [H14 Server]"
      shell: "echo This is H14"
      register: machine_spec
      when:
        - host_search.json.data.info[0].host.spec == "H14"

    - debug: var=machine_spec

    - name: "[BASIC] [05_disk] copy auto-init script"
      copy:
        src: files/init_disk_for_spec.sh
        dest: /tmp/init_disk_for_spec.sh
        owner: root
        group: root
        mode: '0644'

    - name: "[BASIC] [05_disk] init disk [H14 Server]"
      shell: "bash /tmp/init_disk_for_spec.sh H14"
      register: H14_output
      until: H14_output.rc == 0 <<== 4.你需要先知道H14_output 是啥？ 可以通过- debug: var=H14_output 来看
      retries: 3
      delay: 3  <<== 重试间隔3s
      when: host_search.json.data.info[0].host.spec == "H14" <<== 3.根据变量写判断条件，python风格

    - debug: var=H14_output
    - debug: var=H14_output.rc
```

测试方法： 

```
ansible-playbook -i inventory/ahao.mu.D2_V2.ip playbooks/infra_init_new.yml --tags slow_jobs
```