I have a small cluster with docker nodes, I access it via a gateway server that I ssh into. What I would like to do, is to run e.g. Eclipse with a GUI on the cluster and access that GUI on my computer.
What I have found so far is this: http://fabiorehm.com/blog/2014/09/11/running-gui-apps-with-docker/
However, the problem I'm experiencing is that the host computer doesn't run any x-server, since it's only a node in a cluster, so I cannot mount the required directory into the container.
Is there a way to use GUI applications in a container with this setup?
Related
I have to make some benchmarks for a spark-scala application.
I'm working on a cluster with 9 nodes. I access to my account with ssh -i "mykey" "user#host.com" (through Ubuntu on VM or bitvise ssh client for windows).
Now I have to test my application runtime performances but i don't know broswer the "master:8088/cluster" link from terminal or VM. I need to reach YARN web UI and HDFS. I read a lot of articles about ssh tunneling and port forwarding?
I have a local Kubernetes Cluster running under Docker Desktop on Mac. I am running another docker-related process locally on my machine (a local insecure registry). I am interested in getting a process inside the local cluster to push/pull images from the local docker registry.
How can I expose the local registry to be reachable from a pod inside the local Kubernetes cluster?
A way to do this would be to have both the Docker Desktop Cluster and the docker registry use the same docker network. Adding the registry to an existing network is easy.
How does one add the Docker Desktop Cluster to the network?
As I mentioned in comments
I think what you're looking for is mentioned in the documentation here. You would have to add your local insecure registry as insecure-registries value in docker for desktop. Then after restart you should be able to use it.
Deploy a plain HTTP registry
This procedure configures Docker to entirely disregard security for your registry. This is very insecure and is not recommended. It exposes your registry to trivial man-in-the-middle (MITM) attacks. Only use this solution for isolated testing or in a tightly controlled, air-gapped environment.
Edit the daemon.json file, whose default location is /etc/docker/daemon.json on Linux or C:\ProgramData\docker\config\daemon.json on Windows Server. If you use Docker Desktop for Mac or Docker Desktop for Windows, click the Docker icon, choose Preferences (Mac) or Settings (Windows), and choose Docker Engine.
If the daemon.json file does not exist, create it. Assuming there are no other settings in the file, it should have the following contents:
{
"insecure-registries" : ["myregistrydomain.com:5000"]
}
Also found a tutorial for that on medium with macOS. Take a look here.
Is running the registry inside the kubernetes cluster an option?
That way you can use a NodePort service and push images to an address like
"localhost:9000/myrepo".
This is significant because Docker allows insecure (non SSL) connections for localhost.
I tried to find the answer in previous post, but i did not find it !
My question seems dumb, i'm just trying to figure it out :)
I'm new to docker and kubernetes, i'm trying to understand the architecture of kubernetes cluster, nodes, and pods.
I'm using two machines with docker installed, each machine have two containers running, i want to install MicroK8s to start playing with kubernetes, my questions are :
As below image > Can I install it on separate machine and connect it to my docker host machines so it will manage my containers their with support of some sort of (agent/ maybe services) ?, Or kubernetes/MicroK8s must be installed on the machine that will host the containers ?
Can i add my running docker containers directly to a pod ? or i must re-create them ?
Many thanks
You can play with any VM software(cpu virtualization required).
You can set up 3 VMs(master, node1,node2). You have to install kubernetes in each VM. When you connect them thru calico they communicate each other. When you make pods with app or db , you can loadbalance to node1 and node2 or more from master. Then you can create a service to export route to the pods. Or If you want to run everything in one big server, you can. Horizontal scaling or vertical scaling is your choice.
you cant mount a running docker container to the pod but you can load a docker image from any registry.
I have installed CoreOS on a laptop to use it as a Docker host. I really like Kitematic on my mac to create and manager containers. I dont see an option to connect to the remote docker on CoreOS using Kitematic. Are there other tools I can use to connect to a remote docker host and use GUI rather than command line to manager it.
I also like Kitematic a lot! As an alternative in CoreOS, you can try docker-ui, and it's evolution portainer.
They are both docker containers that can help you find / run docker images and inspect docker volumes / network / container stats.
You can also launch new containers directly through the web UI. More information on this good review of the portainer's possibilities
Rancher UI from Rancher Labs maybe also be worth looking at. It is more designed as a docker orchestration tool (when you operate a docker swarm cluster for instance).
I am running Windows 7 on my desktop at work and I am signed in to a regular user account on the VPN. To develop software, we are to normally open a Dev VM and work from in there however recently I've been assigned a task to research Docker and Mongo DB. I have very limited access to what I can install on the main machine.
Here lies my problem:
Is it possible for me to connect to a MongoDB instance inside a container inside the docker machine from Windows and make changes? I would ideally like to use a GUI tool such as Mongo Management Studio to make changes to a Mongo database within a container.
By inspecting the Mongo container, it has the ports listed as: 0.0.0.0:32768 -> 27017/tcp
and docker-machine ip (vm name) returns 192.168.99.111.
I have commented out the 127.0.0.1 binding host ip within the mongod.conf file also.
From what I have researched so far, most users resolve their problem by connecting to their docker-machine IP with the port they've set with -p or been given with -P. Unfortunately for me, trying to connect with 192.168.99.111:32768 does not work.
I am pretty stumped and quite new to this environment. I am able to get inside the container with bash and manipulate the database there however I'm wondering if I can do this within Windows.
Thank you if anyone can help.
After reading Smutje's advice to ping the VM IP and testing it out to no avail, I attempted to find a pingable IP which would hopefully move me closer to my goal.
By doing "ifconfig" within the Boot2Docker VM (but not inside the container), I was able to locate another IP listed under eth0. This IP looks something like 134.36.xxx.xxx to me and is pingable. With the Mongo container running I can now access the database from within Mongo Management Studio by connecting to 134.36.xxx.xxx:32768 and manipulate the data from there.
If you have the option of choosing the operating system for your dev VM, go with Ubuntu and setup docker with all of the the containers you want to test on that. Either way, you will need to have a VM for testing docker on windows since it uses VirtualBox if i'm not mistaken. Instead, setup an Ubuntu VM and do all of your testing on that.