ssh - "Could not resolve hostname"Ansible

Question

我根据 this tutorial 创建了我的第一个 ansible playbook ，所以它看起来像这样:

---
- hosts: hostb
  tasks:
      - name: Create file
        file:
            path: /tmp/yallo
            state: touch

- hosts: my_hosts
  sudo: yes
  tasks:
      - name: Create user
        user:
            name: mario
            shell: /bin/zsh

      - name: Install zlib
        yum:
            name: zlib
            state: latest

但是，我不知道应该将哪些主机放入我的主机文件中。我现在有这样的事情:

[my_hosts]
hostA
hostB

显然，它不起作用，我明白了:

ssh: Could not resolve hostname hostb: Name or service not known

那么我应该如何更改我的主机文件？我是 ansible 的新手，所以我将非常感谢您的帮助!

Answer 1

好的，所以 Ansible list 可以基于以下格式:

主机名 => IP Address

主机名 => DHCP or Hosts file hostname reference localhost/cassie.local

创建自己的别名 => hostname ansible_host=IP Address

主机组 => [group_name]

这是您可以使用的最基本的结构。

Example

# Grouping
[test-group]

# IP reference
192.168.1.3

# Local hosts file reference
localhost

# Create your own alias
test ansible_host=192.168.1.4

# Create your alias with port and user to login as
test-2 ansible_host=192.168.1.5 ansible_port=1234 ansible_user=ubuntu

Grouping of hosts will only end when the end of file or another group detected. So if you wish to have hosts that don't belong to a group, make sure they're defined above the group definition.

IE。上例中的所有内容都属于 test-group ，如果你遵循；它将在所有主机上执行:
ansible test-group -u ubuntu -m ping