Docker-Selenium Grid 4 在 Azure 容器实例上进行视频录制：无法打开显示错误

Question

给定 yaml 文件definition.yml和容器定义

apiVersion: 2019-12-01
location: germanywestcentral
name: nameforcontainergroup
properties:
  containers:
  - name: selenium-hub
    properties:
      image: selenium/standalone-chrome:4.1.1-20211217
      resources:
        requests:
          cpu: 1
          memoryInGb: 1
      environmentVariables:
      - name: SCREEN_WIDTH
        value: "1920"
      - name: SCREEN_HEIGHT
        value: "1080"
      - name: VNC_NO_PASSWORD
        value: 1
      ports:
      - port: 4444
  - name: chrome-node-1-video
    properties:
      image: selenium/video:ffmpeg-4.3.1-20211217
      resources:
        requests:
          cpu: 1
          memoryInGb: 2
      environmentVariables:
      - name: DISPLAY_CONTAINER_NAME
        value: selenium-hub
      - name: FILE_NAME
        value: chrome-node-video.mp4
      volumeMounts:
      - name: videos
        mountPath: /videos
    
  osType: Linux
  volumes:
  - name: devshm
    emptyDir: {}
  - name: downloads
    emptyDir: {}
  - name: videos
    emptyDir: {}
  ipAddress:    
    ports:
    - protocol: tcp
      port: '4444'
    type: Public
    dnsNameLabel: some-dns-label
tags: null
type: Microsoft.ContainerInstance/containerGroups

假设组group-name存在，部署从 Azure CLI 运行的容器： az login az container create --resource-group group-name --file definition.yml

容器已部署，网格正在运行，但视频容器无法连接到网格

Cannot open display selenium-hub:99.0, error 1.
selenium-hub:99.0: Input/output error

完整的容器日志：

2021-12-30 09:06:38,504 CRIT Supervisor is running as root.  Privileges were not dropped because no user is specified in the config file.  If you intend to run as root, you can set user=root in the config file to avoid this message.
2021-12-30 09:06:38,508 INFO supervisord started with pid 31
2021-12-30 09:06:39,511 INFO spawned: 'video-recording' with pid 36
2021-12-30 09:06:39,515 INFO spawned: 'video-ready' with pid 37
Checking if the display is open...
2021-12-30 09:06:39,524 INFO success: video-recording entered RUNNING state, process has stayed up for > than 0 seconds (startsecs)
2021-12-30 09:06:39,525 INFO success: video-ready entered RUNNING state, process has stayed up for > than 0 seconds (startsecs)
Waiting before next display check...
Waiting before next display check...
Waiting before next display check...
Waiting before next display check...
Waiting before next display check...
Waiting before next display check...
Waiting before next display check...
Waiting before next display check...
ffmpeg version 4.3.1 Copyright (c) 2000-2020 the FFmpeg developers
  built with gcc 9 (Ubuntu 9.3.0-17ubuntu1~20.04)
  configuration: --disable-debug --disable-doc --disable-ffplay --enable-shared --enable-avresample --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-gpl --enable-libass --enable-fontconfig --enable-libfreetype --enable-libvidstab --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libxcb --enable-libx265 --enable-libxvid --enable-libx264 --enable-nonfree --enable-openssl --enable-libfdk_aac --enable-postproc --enable-small --enable-version3 --enable-libbluray --enable-libzmq --extra-libs=-ldl --prefix=/opt/ffmpeg --enable-libopenjpeg --enable-libkvazaar --enable-libaom --extra-libs=-lpthread --enable-libsrt --enable-libaribb24 --extra-cflags=-I/opt/ffmpeg/include --extra-ldflags=-L/opt/ffmpeg/lib
  libavutil      56. 51.100 / 56. 51.100
  libavcodec     58. 91.100 / 58. 91.100
  libavformat    58. 45.100 / 58. 45.100
  libavdevice    58. 10.100 / 58. 10.100
  libavfilter     7. 85.100 /  7. 85.100
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  7.100 /  5.  7.100
  libswresample   3.  7.100 /  3.  7.100
  libpostproc    55.  7.100 / 55.  7.100
[x11grab @ 0x556baa816b80] Cannot open display selenium-hub:99.0, error 1.
selenium-hub:99.0: Input/output error
2021-12-30 09:07:05,243 INFO exited: video-recording (exit status 1; not expected)

我错过了一些配置吗？

Yaml 参考： https://docs.microsoft.com/en-us/azure/container-instances/container-instances-reference-yaml

Answer 1

请检查参考是否提供了解决方法的想法：

请检查您是否错过了在 selenium 集线器环境变量中提供主机、端口等端口并将其用于 chrome。确保也打开其他端口。 并检查您是否为 selenium 集线器和 chrome 正确配置了容器，并将其用于视频录制。

-name: selenium-node-chrome
image: selenium/standalone-chrome:4.1.1-20211217
....
...
environmentVariables:
- name: SE_EVENT_BUS_HOST
value: selenium-hub
- name: SE_EVENT_BUS_PUBLISH_PORT
value: '4442'
- name: SE_EVENT_BUS_SUBSCRIBE_PORT
value: '4443'
- name: SE_NODE_HOST
value: node-chrome
- name: SE_NODE_PORT
value: '5555'

对于视频

- name: chrome-node-1-video
....//other properties 
image: selenium/video:ffmpeg-4.3.1-20211217
.....
environmentVariables:
- name: DISPLAY_CONTAINER_NAME
value: selenium-node-chrome
- name: FILE_NAME
  value: chrome-node-video.mp4

…..

配置 selenium-hub

-name:selenium-hub
image: selenium/hub:4.1.1-20211217
container_name: selenium-hub
ports:
- "4442:4442"
- "4443:4443"
- "4444:4444"

参考：

1. docker compose - 设置环境变量 - Thinbug
2. Chrome 节点未正确注册到集线器 - Thinbug
3. docker-compose-v3-video.yml at trunk ·(github.com)
4. 错误：无法打开显示：Jenkins Ubuntu 中的 99 - 代码日志