在 MAC 上的 docker 容器上运行 ansible playbook 的问题

Question

我启动了 3 个 ubuntu 容器来练习 ansible playbook。与 docker for MAC 一样，我不能直接在容器 ip 上使用 ssh，必须通过端口转发路由 followed this question

docker run -d -p 2024:22 dockerReg/ubuntu-ssh-enabled
docker run -d -p 2023:22 dockerReg/ubuntu-ssh-enabled
docker run -d -p 2022:22 dockerReg/ubuntu-ssh-enabled

我当前的库存文件如下所示

MacBook-Pro:~$ cat inventory.txt
target1 ansible_host=172.17.0.2 ansible_ssh_pass=Passw0rd
target2 ansible_host=172.17.0.3 ansible_ssh_pass=Passw0rd
target3 ansible_host=172.17.0.4 ansible_ssh_pass=Passw0rd

我现在需要运行什么命令来在我的清单文件中的所有目标上运行 ping 模块。这当然行不通：ansible target* -m ping -i inventory.txt

解决此问题的最佳方法是什么，或者有什么简单的解决方法？

Answer 1

如果您正在启动 docker 容器，为什么不使用 docker connection plugin ？我从来没有使用过任何 machintosh，所以我可能会错过一些东西，但我不明白为什么只要您可以使用“普通”docker 命令与容器交互，它就不能按预期工作。

快速 POC 助您一臂之力。

库存inventories/docker-poc.yml

---
all:
  children:
    my_poc_hosts:
      vars:
        ansible_connection: docker
      hosts:
        target1:
        target2:
        target3:

如果你想保持ini格式，这是等价的：

[my_poc_hosts]
target1
target2
target3

[my_poc_hosts:vars]
ansible_connection=docker

启动测试容器

我使用了 python:3.8 映像（以确保安装了 python，因为它是 ansible 必需的）和一个长时间运行的自定义命令。

for i in {1..3} ; do docker run -d --rm --name target$i python:3.8 sh -c "while true; do sleep 20000; done"; done

使用 ad-hoc ping 进行快速测试

$ ansible -i inventories/docker-poc.yml my_poc_hosts -m ping
[WARNING]: Platform linux on host target1 is using the discovered Python interpreter at /usr/bin/python, but future installation of another Python interpreter could change this. See
https://docs.ansible.com/ansible/2.9/reference_appendices/interpreter_discovery.html for more information.

target1 | SUCCESS => {
    "ansible_facts": {
        "discovered_interpreter_python": "/usr/bin/python"
    },
    "changed": false,
    "ping": "pong"
}
[WARNING]: Platform linux on host target3 is using the discovered Python interpreter at /usr/bin/python, but future installation of another Python interpreter could change this. See
https://docs.ansible.com/ansible/2.9/reference_appendices/interpreter_discovery.html for more information.

target3 | SUCCESS => {
    "ansible_facts": {
        "discovered_interpreter_python": "/usr/bin/python"
    },
    "changed": false,
    "ping": "pong"
}
[WARNING]: Platform linux on host target2 is using the discovered Python interpreter at /usr/bin/python, but future installation of another Python interpreter could change this. See
https://docs.ansible.com/ansible/2.9/reference_appendices/interpreter_discovery.html for more information.

target2 | SUCCESS => {
    "ansible_facts": {
        "discovered_interpreter_python": "/usr/bin/python"
    },
    "changed": false,
    "ping": "pong"
}

清理

for i in {1..3}; do docker rm -f target$i; done