Docker 可通过 localhost:8080 和 127.0.0.1:8080 访问,但不能通过 IP 访问

Docker 可通过 localhost:8080 和 127.0.0.1:8080 访问,但不能通过 IP 访问

我有以下场景 - 3x Vagrant VM 从下面的 Vagrantfile 旋转而来,启动并运行(在 Oracle VirtualBox 中可见)。

我登录docker1,网络类型为“NAT”,使用端口转发(Guest:8080,Host:8080)。

我能够从 localhost:8080 & 127.0.0.1:8080 & 127.0.1.1:8080 访问该页面。但是,我无法通过 IP 进行访问(192.168.99.101:8080 为“响应时间过长”且无法访问)。

Vagrant.configure("2") do |config|

    config.vm.define "docker1" do |docker1|
        docker1.vm.box="xxx/centos-stream-8"
        docker1.vm.hostname = "docker1.do1.lab"
        docker1.vm.network "private_network", ip: "192.168.99.101"
        docker1.vm.provision "shell", path: "docker-setup.sh"
        docker1.vm.provision "shell", path: "other-steps.sh"
        docker1.vm.provider :virtualbox do |vb|
            vb.customize ["modifyvm", :id, "--memory", "1536"]
        end
    end
    
    config.vm.define "docker2" do |docker2|
        docker2.vm.box="xxx/centos-stream-8"
        docker2.vm.hostname = "docker2.do1.lab"
        docker2.vm.network "private_network", ip: "192.168.99.102"
        docker2.vm.provision "shell", path: "docker-setup.sh"
        docker2.vm.provision "shell", path: "other-steps.sh"
        docker2.vm.provider :virtualbox do |vb|
            vb.customize ["modifyvm", :id, "--memory", "1536"]
        end
    end
    
    config.vm.define "docker3" do |docker3|
        docker3.vm.box="xxx/centos-stream-8"
        docker3.vm.hostname = "docker3.do1.lab"
        docker3.vm.network "private_network", ip: "192.168.99.103"
        docker3.vm.provision "shell", path: "docker-setup.sh"
        docker3.vm.provision "shell", path: "other-steps.sh"
        docker3.vm.provider :virtualbox do |vb|
            vb.customize ["modifyvm", :id, "--memory", "1536"]
        end
    end
end

docker-setup.sh 文件如下:

#!/bin/bash

echo "* Add Docker repository ..."
dnf config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo

echo "* Install Docker ..."
dnf install -y docker-ce docker-ce-cli containerd.io

echo "* Enable and start Docker ..."
systemctl enable docker
systemctl start docker

echo "* Add vagrant user to docker group ..."
usermod -aG docker vagrant

other-steps.sh 文件如下:

#!/bin/bash

echo "* Add hosts ..."
echo "192.168.99.101 docker1.do1.lab docker1" >> /etc/hosts
echo "192.168.99.102 docker2.do1.lab docker2" >> /etc/hosts
echo "192.168.99.103 docker3.do1.lab docker3" >> /etc/hosts

echo "* Install Additional Packages ..."
dnf install -y jq tree git nano

echo "* Firewall - swarm - open ports ..."
firewall-cmd --add-port=2377/tcp --permanent
firewall-cmd --add-port=4789/udp --permanent
firewall-cmd --add-port=7946/tcp --permanent
firewall-cmd --add-port=7946/udp --permanent

echo "* Firewall - app - open port 8080 ..."
firewall-cmd --add-port=8080/tcp --permanent
firewall-cmd --reload

网络如下:

[vagrant@docker1 etc]$ docker network ls
NETWORK ID     NAME              DRIVER    SCOPE
f2351cd29061   bridge            bridge    local
f91a21d83931   docker_gwbridge   bridge    local
c5fc9aedf330   host              host      local
oc2i4c2czira   ingress           overlay   swarm
50fe2b72573c   none              null      local

etc/hosts 内容在这里:

[vagrant@docker1 etc]$ cat hosts
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
127.0.1.1 docker1.do1.lab docker1
192.168.99.101 docker1.do1.lab docker1
192.168.99.102 docker2.do1.lab docker2
192.168.99.103 docker3.do1.lab docker3

用于启动容器的命令如下:

docker container run -d --name web -p 8080:80 -e APP_MODE='test' swarm-app

我查阅了大量有关相同问题的文章,但仍然找不到解决方案。我想这可能与相关 IP 地址的 DNS 解析有关?

更新:我正在通过 curl 在 CMD 中打开以下地址(端口转发主机:8080,访客:80),如果有任何信息需要提供,请告诉我: `[vagrant@docker1 ~]$ curl http:/localhost:8080-> 无法在浏览器中打开

你好,Docker Swarm!

正在测试模式下运行。

服务方:be93b0268b1d

[vagrant@docker1 ~]$ curlhttp://172.17.0.2:80 -> 这是容器 IP - 无法通过浏览器打开

你好,Docker Swarm!

正在测试模式下运行。

服务方:be93b0268b1d

[vagrant@docker1 ~]$ curlhttp://192.168.99.101:8080 -> 这是应该通过浏览器打开的 Docker 主机 IP,同样没有成功

你好,Docker Swarm!

正在测试模式下运行。

服务方:be93b0268b1d`

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