I am running a Postgres Docker container by command docker run --name postgres -p 0.0.0.0:5432:5432 -e POSTGRES_PASSWORD=password -d postgres.
In my understanding, 0.0.0.0:5432 means all the IP addresses of the Windows host at port 5432. And, I can access the port by the command telnet 192.168.56.1 5432 with Windows CMD. With VirtualBox installed, 192.168.56.1 means the physical host.
However, I have an RHEL Linux virtual machine running on VirtualBox. On the VM, the command telnet 192.168.56.1 5432 does not work. But if I try another IP address of the Windows host, it works.
I need to use the virtual machine to test and access the Postgres database deployed on the physical host. I am wondering whether I missed anything here.
Any suggestions or hints will be highly appreciated.
So I'm using Docker Toolbox because I don't have Hyper-V on my machine since it's not Windows 10 pro. Everything seems to work fine, but when I try to go on my browser 0.0.0.0:80 it always returns me: This site can’t be reached
But when I run the command: docker container ps I get the following: 0.0.0.0:80->80/tcp meaning that this address should work. I searched across stackoverflow and github issues. Now I'm stuck.
Am I missing something?
Thanks,
Mark
EDIT:
Using docker-machine ip default returns me 192.168.99.100. I run that on port 80. I still get the same result except that the address becomes the container id: https://fd677edg12
I run that command on cmd to find my ipv4: cmd /k ipconfig /all. Put the result with the port and it returns the same thing: https://fd677edg12
Docker Toolbox doesn't get as many conveniences as Docker for Windows, but you're correct in using it since you're on Home edition.
In Toolbox, nothing will be localhost, and will be 192.168.99.100 by default, since it's running a Linux VM in VirtualBox.
So if you run docker run -p 80:80 nginx
(notice I had to publish a port for 192.168.99.100 to listen on that port)
Then going to http://192.168.99.100 should work.
I initially had a few issues with accessing my Applications at localhost:8080 while using DockerToolBox and OracleVM VirtualBox.
In VirtualBox:
Click the appropriate machine (probably the one labeled "default")
Settings
Network > Adapter 1 > Advanced > Port Forwarding
Click "+" to add a new Rule
Set Host Port 8080 & Guest Port 8080; be sure to leave Host IP and Guest IP empty
Run the command:
docker run -p 8080:8080 ${image_id}
I was following docker for windows tutorial in https://docs.docker.com/docker-for-windows/#set-up-tab-completion-in-powershell and got stuck in step #6 when test nginx in the web browser. Seems I faced a similar problem since I also use Windows Home and don't have Hyper-V. My workaround is quite simple:
check your docker IP default
$ docker-machine ip default
192.168.99.100
Go to Oracle Virtual Machine to set for port forwarding. Make sure the network setting is NAT, and add port forwarding.
Host IP: 127.0.0.1, Guest IP: 192.168.99.100, port all set to 80
like this
Try again to your browser and run http://localhost or http://127.0.0.1 (can add the port 80 also). It should run.
The thing is that the nginx IP is meant to be accessible within the docker Virtual Machine, so that we need that port forwading setting in order to access it directly in the host machine's browser
You can use localhost instead of '192.168.99.100' by following the instructions:
Step #01:
docker-machine ip default
You will see the default IP
Step #02:
docker-machine stop default
Step #03:
Open VirtualBox Manager (from the start programs in windows search for VirtualBox Manager)
Select your Docker Machine VirtualBox image (e.g.: default)
Open Settings -> Network -> Advanced -> Port Forwarding
Add your app name, the desired host port and your guest port
i.e, app name : nginx, host: 127.0.0.1, host port: 80, guest port: 80
Step #04:
Now you’re ready to start your Docker Machine by executing the following:
docker-machine start default
Then just start your Docker container and you will be able to access it via localhost.
Have a look here for details.
To map the ports expected to localhost instead of hitting the docker-machine IP directly, you can use the VirtualBox CLI.
If the docker-machine VM (here called default) is running, add and delete rules like this:
> VBoxManage.exe controlvm "default" natpf1 "nginx,tcp,,8888,,8888"
> VBoxManage.exe controlvm "default" natpf1 delete nginx
If the VM is not running, or you want to stop before altering it:
> docker-machine stop
> VBoxManage.exe modifyvm "default" --natpf1 "nginx,tcp,,8888,,8888"
> VBoxManage.exe modifyvm "default" --natpf1 delete "nginx"
> docker-machine start
Where the format of the port forwarding rule is [<name>],tcp|udp,[<hostip>],<hostport>,[<guestip>], <guestport>.
Note that in VirtualBox, you want to map to the host port of Docker map, not the internal container port. You're mapping host -> VM, then Docker maps VM -> container.
See the VirtualBox docs.
This is another easy way to avoid typing the ip 192.168.99.100.
Go to C:\Windows\System32\drivers\etc\hosts and add at the end of the file:
192.168.99.100 docker.awesome or any name of your liking.
Save the file (You need to have admin rights so make sure you right click on the file and run as administrator to be able to save it when you edit it).
Go to your chosen domain name, docker.awesome:8080 in this case and there you have it.
After lot of trials, I was able to get this bulletin board.
The docker run command I used - docker run -p 4680:8080 --name bb bulletinboard:1.0
Here, 4680 is localhost port number.
8080 is container port number, the port at which the container will be listening. This port number is mentioned in the EXPOSE command in the Dockerfile.
Then, go to web-browser and type 192.168.99.100:4680
Here, 192.168.99.100 is the docker machine IP address (use command -> docker-machine ip)
After this, your browser page should open to -
Hope this helps you all!!
I have installed the ssh-server using
sudo apt-get install openssh-server on my ubuntu:latest Docker container running on Mac OSX Yosemite. I got the IP address of the container using boot2docker ip. Using the Network Utility I can verify that port 22 is open on that IP. However, I cannot ssh into that container's filesystem. I did not explicity specify that port 22 should be exported when starting the container with docker start -i CONTAINER_NAME. The command ssh -v localhost succeeds on the terminal of the container but when I try to do it from my Mac's terminal, it says:
Connection closed by x.x.x.x
I am copying the contents of sshd_config here:
http://collabedit.com/a76d6
With boot2docker ip you get the IP of Boot2Docker VM, not the IP of your ssh container. To connect from your Mac's terminal you should expose the port 22 of your container, and then you can connect using the Boot2Docker VM IP from your Mac session. I.E.:
docker run -d -p 2222:22 CONTAINER_NAME and then connect through ssh using BOOT2DOCKER_IP and 2222 port.
I am running a Vagrant VM under Windows 7 . The Vagrant VM is running a docker container. So the configuration is :
Windows7[Vagrant[Docker]]
I want to ssh from Windows into the Docker container.
The docker container is running sshd and I can successfully ssh from Vagrant VM to Docker container.
sudo docker ps
gives:
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
64b13daab5f2 ubuntu:12.04 "/bin/bash" 14 minutes ago Up 14 minutes 0.0.0.0:49153->22/tcp thirsty_morse
From the Vagrant VM:
ssh root#localhost -p 49153
works just fine. So Vagrant VM's port 49153 is forwarded to Docker container's port 22.
I've added
config.vm.network "forwarded_port", guest:49153, host:49155
to Vagrantfile so that localhost:49155 on Windows is forwarded to Vagrant VM:49153
This is where things break down. When I try to ssh from Windows to localhost:49155, I get:
ssh: connect to host localhost port 49155: Connection refused
So Windows:49155 -> Vagrant:49153 is not working. I thought that it may be a problem related to listening on a port on Vagrant VM's external ip so I've installed rinetd into Vagrant VM and I've done:
bindadress bindport connectaddress connectport
0.0.0.0 49153 127.0.0.1 49153
Still no luck. What am I missing here?
Ok, answering my own question. It works now. I think the most likely reason for the problem was that port 49153/55 and its neighbours is actually used by some windows services by default. I changed to mapping for ports in the Vagrant file to use 9090 for Windows and everything worked. No need to rinetd either. I've also done:
sudo docker run -v /vagrant:/opt/data -p 0.0.0.0:49153:22 -i -t ubuntu:12.04
Notice the 0.0.0.0: it may or may not be relevant but this configuration is working for me.
Docker (www.docker.io) looks terrific. However, after installing VirtualBox, Vagrant
... and finally Docker on a Mac, I'm finding it's not possible to access the service running in the Docker container from another computer (or from a terminal session on the Mac). The service I'm trying to access is Redis.
The problem appears to be that there's no route to the IP address assigned to the Docker container. In this case the container's IP is 172.16.42.2 while the Mac's IP is 196.168.0.3.
A couple notes:
It IS possible to access it - but only from within the VirtualBox session. This can be done using redis-cli -h 172.16.42.2 -p 6379.
I have added "config.vm.network :bridged" to the VagrantFile in an attempt to get the, but that didn't solve the problem.
The VM generated by vagrant is indeed isolated, in order to access it from your host, you can allocate a private network to it.
Instead of doing config.vm.network :bridged, try config.vm.network :private_network, ip: "192.168.50.4", It should do the trick
However, this will only allow you to access the VM itself, not the containers.
In order to do so, when running the container, you can add the -p option
ex: docker run -d -p 8989 base nc -lkp 8989
This will run a netcat listening on 8989 within a container and expose the port publicly. As it is also run with -d, the container will be in detached mode and the only output will be the container's ID
In order to expose the port, Docker do a simple NAT. In order to know the real port, you can
do docker port <ID of the container> 8989
Netcat will be available from the mac at 192.168.50.4:<result>
I just wrote a tutorial of how to use a host-only network and TCP routing to make this pretty easy. This way you don't have to map every specific port.
http://ispyker.blogspot.com/2014/04/accessing-docker-container-private.html
Important points ...
1) Add host-only network to Virtual Box
2) Tell the boot2docker VM to have an adapter on the host-only network
3) Add an IP for the new boot2docker VM host-only networking adapter
4) Route all Mac OS X traffic for the docker container subnet to that boot2docker VM host-only networking IP
Actual steps are on the blog with output so you can compare to what you see as you follow them.
I have installed tomcat from my Dockerfile and forwarded that to 6060 using vagrant`s port forwarding. These are the steps worked for me:
vagrant provision
vagrant up
vagrant ssh
box_name$ docker run -i -t -p 8080:8080 bsb_tomcat6 /bin/bash
Able to see tomcat up & running on localhost:6060, as I have done port forwarding to 6060 in my Vagrantfile
you also can define PRIVATE_NETWORK and FORWARD_DOCKER_PORTS environment variables to access your services that are running in docker containers:
$ vagrant halt
$ export PRIVATE_NETWORK=192.168.50.4
$ export FORWARD_DOCKER_PORTS=1
$ vagrant up
In my case i can access postgres from Mac using
$ telnet 192.168.50.4 49154
to find out actual application port you can use
$ sudo docker port 1854499c6547 5432
0.0.0.0:49154