Question

我正在尝试构建映像，并尝试使用ansible剧本启动多个docker容器。我不明白如何发布端口。下面的剧本给了我一个错误，很明显的是，端口已被分配，但是我该如何实现这一点，因为从容器外部只有一个端口可以访问所有容器？

剧本-

- name: Manage Docker instances via Ansible
  hosts: shashank-VM
  connection: local
  become: yes
  become_method: sudo
  tasks:
    - name: Building an image from Dockerfile
      docker_image:
        build:
          path: .
          pull: yes
        name: web_new
        source: build

    - name: Creation of Docker Containers
      docker_container:
        name: my-app-{{ item }}
        image: web_new
        state: present
        ports:
         - "79:80"
      with_sequence: count=3

    - name: Starting Docker Containers
      docker_container:
        name: my-app-{{ item }}
        image: web_new
        state: started
      with_sequence: count=3

错误-

changed: [shashank-VM]

TASK [Creation of Docker Containers] *********************************************************************************************************
changed: [shashank-VM] => (item=1)
changed: [shashank-VM] => (item=2)
changed: [shashank-VM] => (item=3)

TASK [Starting Docker Containers] ************************************************************************************************************
changed: [shashank-VM] => (item=1)
failed: [shashank-VM] (item=2) => {"ansible_facts": {"discovered_interpreter_python": "/usr/bin/python"}, "ansible_loop_var": "item", "changed": false, "item": "2", "msg": "Error starting container beb7f1d204f47862d16722f70b812df7193ddacf12d15350a9095cec2ebf4d85: 500 Server Error: Internal Server Error (\"driver failed programming external connectivity on endpoint my-app-2 (880c06fe9e2efa75537e350734be1d46d0cc76e7acf70733d19ad38706dde5ab): Bind for 0.0.0.0:78 failed: port is already allocated\")"}
failed: [shashank-VM] (item=3) => {"ansible_loop_var": "item", "changed": false, "item": "3", "msg": "Error starting container 048f2f3ea6fed5e094fdf59a4650b2b3f8164d804ee7dc8875e6e95bda1300d7: 500 Server Error: Internal Server Error (\"driver failed programming external connectivity on endpoint my-app-3 (8247f75384b240cb9bf1ee66cc9f0404df5465e6c08903304f14bd813c218fa1): Bind for 0.0.0.0:78 failed: port is already allocated\")"}

注意：我有一个要为其构建映像的应用程序，并且该映像将运行多个容器。如何从外部访问我的应用程序？我如何在端口上工作？

感谢您的帮助

Answer 1

问题的原因在这里：

> Bind for 0.0.0.0:78 failed: port is already allocated

检查哪些应用程序/容器阻止了端口78

您可以使用ss来做到这一点：

sudo ss -plunt | grep :78

或使用lsof：

lsof -i :78

或使用fuser：

fuser -v -n tcp 78

使用Ansible启动多个Docker容器

1 个答案: