如何为Selenium网格配置Nomad作业

我正在尝试在Hashicorp Nomad中设置Selenium网格，但我不知道如何使网络工作。 我想要的是有一个selenium hub和8个chrome节点。我发现，如果将节点任务放入其自己的组中，则只能对节点任务进行多次分配

在本地运行时，我会像这样启动网格：

docker network create grid
docker run -d -p 4442-4444:4442-4444 --net grid --name selenium-hub selenium/hub:4
docker run -d --net grid -e SE_EVENT_BUS_HOST=selenium-hub -e SE_EVENT_BUS_PUBLISH_PORT=4442 -e SE_EVENT_BUS_SUBSCRIBE_PORT=4443 -v /dev/shm:/dev/shm selenium/node-chrome:4
docker run -d --net grid -e SE_EVENT_BUS_HOST=selenium-hub -e SE_EVENT_BUS_PUBLISH_PORT=4442 -e SE_EVENT_BUS_SUBSCRIBE_PORT=4443 -v /dev/shm:/dev/shm selenium/node-chrome:4
...

job "selenium" {
  datacenters = ["dc1"]
  type = "service"
  group "selenium_hub" {
    network {

    }
    task "selenium_hub" {
      driver = "docker"
      config {
        image = "selenium/hub:4"
      }
    }
  }
  group "selenium_nodes" {
    count = 8
    network {

    }
    task "selenium_node" {
      driver = "docker"
      env {
        SE_EVENT_BUS_HOST = "selenium-hub"
        SE_EVENT_BUS_PUBLISH_PORT = "4442"
        SE_EVENT_BUS_SUBSCRIBE_PORT = "4443"
      }
      config {
        image = "selenium/node-chrome:4"
      }
    }
  }  
}

job "selenium" { 
  datacenters = ["dc1"]
  type = "service"
  group "selenium_hub" {
    network {
      mode = "host"
    }
    task "selenium_hub" {
      driver = "docker"
      config {
        image = "selenium/hub:3.141.59-20201010"
        network_mode = "host"
      }
    }
  }
  group "selenium_nodes" {
    count = 8
    network {
        mode = "host"
        port "http" {}
    }
    task "selenium_node" {
      driver = "docker"
      env {
        HUB_HOST = "localhost"
        SE_OPTS = "-port ${NOMAD_PORT_http}"
      }
      config {
        network_mode = "host"
        image = "selenium/node-chrome:3.141.59-20201010"
      }
    }
  }  
}

我需要如何配置网络才能工作

我目前的工作是这样的：

docker network create grid
docker run -d -p 4442-4444:4442-4444 --net grid --name selenium-hub selenium/hub:4
docker run -d --net grid -e SE_EVENT_BUS_HOST=selenium-hub -e SE_EVENT_BUS_PUBLISH_PORT=4442 -e SE_EVENT_BUS_SUBSCRIBE_PORT=4443 -v /dev/shm:/dev/shm selenium/node-chrome:4
docker run -d --net grid -e SE_EVENT_BUS_HOST=selenium-hub -e SE_EVENT_BUS_PUBLISH_PORT=4442 -e SE_EVENT_BUS_SUBSCRIBE_PORT=4443 -v /dev/shm:/dev/shm selenium/node-chrome:4
...

job "selenium" {
  datacenters = ["dc1"]
  type = "service"
  group "selenium_hub" {
    network {

    }
    task "selenium_hub" {
      driver = "docker"
      config {
        image = "selenium/hub:4"
      }
    }
  }
  group "selenium_nodes" {
    count = 8
    network {

    }
    task "selenium_node" {
      driver = "docker"
      env {
        SE_EVENT_BUS_HOST = "selenium-hub"
        SE_EVENT_BUS_PUBLISH_PORT = "4442"
        SE_EVENT_BUS_SUBSCRIBE_PORT = "4443"
      }
      config {
        image = "selenium/node-chrome:4"
      }
    }
  }  
}

job "selenium" { 
  datacenters = ["dc1"]
  type = "service"
  group "selenium_hub" {
    network {
      mode = "host"
    }
    task "selenium_hub" {
      driver = "docker"
      config {
        image = "selenium/hub:3.141.59-20201010"
        network_mode = "host"
      }
    }
  }
  group "selenium_nodes" {
    count = 8
    network {
        mode = "host"
        port "http" {}
    }
    task "selenium_node" {
      driver = "docker"
      env {
        HUB_HOST = "localhost"
        SE_OPTS = "-port ${NOMAD_PORT_http}"
      }
      config {
        network_mode = "host"
        image = "selenium/node-chrome:3.141.59-20201010"
      }
    }
  }  
}

---

如果有人遇到这种情况，我会让它像这样工作：

docker network create grid
docker run -d -p 4442-4444:4442-4444 --net grid --name selenium-hub selenium/hub:4
docker run -d --net grid -e SE_EVENT_BUS_HOST=selenium-hub -e SE_EVENT_BUS_PUBLISH_PORT=4442 -e SE_EVENT_BUS_SUBSCRIBE_PORT=4443 -v /dev/shm:/dev/shm selenium/node-chrome:4
docker run -d --net grid -e SE_EVENT_BUS_HOST=selenium-hub -e SE_EVENT_BUS_PUBLISH_PORT=4442 -e SE_EVENT_BUS_SUBSCRIBE_PORT=4443 -v /dev/shm:/dev/shm selenium/node-chrome:4
...

job "selenium" {
  datacenters = ["dc1"]
  type = "service"
  group "selenium_hub" {
    network {

    }
    task "selenium_hub" {
      driver = "docker"
      config {
        image = "selenium/hub:4"
      }
    }
  }
  group "selenium_nodes" {
    count = 8
    network {

    }
    task "selenium_node" {
      driver = "docker"
      env {
        SE_EVENT_BUS_HOST = "selenium-hub"
        SE_EVENT_BUS_PUBLISH_PORT = "4442"
        SE_EVENT_BUS_SUBSCRIBE_PORT = "4443"
      }
      config {
        image = "selenium/node-chrome:4"
      }
    }
  }  
}

job "selenium" { 
  datacenters = ["dc1"]
  type = "service"
  group "selenium_hub" {
    network {
      mode = "host"
    }
    task "selenium_hub" {
      driver = "docker"
      config {
        image = "selenium/hub:3.141.59-20201010"
        network_mode = "host"
      }
    }
  }
  group "selenium_nodes" {
    count = 8
    network {
        mode = "host"
        port "http" {}
    }
    task "selenium_node" {
      driver = "docker"
      env {
        HUB_HOST = "localhost"
        SE_OPTS = "-port ${NOMAD_PORT_http}"
      }
      config {
        network_mode = "host"
        image = "selenium/node-chrome:3.141.59-20201010"
      }
    }
  }  
}

我使用Selenium 3而不是4，因为4还有其他问题。 因为我使用了主机网络，所有节点都使用端口5555，所以我需要通过SE_OPTS环境变量将动态端口（http）传递给Selenium