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Questions tagged [docker-swarm]

Docker-swarm is a tool that is able to create a cluster of docker nodes and deploy containers in this cluster.

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How to restrict docker swarm resource utlization

I have installed docker swarm on an ubuntu machine on aws. After that, I have spinned up few services on that. After few services the machine got hang and unable to connect. Everytime, I need to restart the machine and the containers are getting…
uday kiran
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Ubuntu server 'partially' responsive

I have an Ubuntu 18.04 server that has periodically unresponsive - I can ping it, and it appears that some https services are running (albeit v. slowly), however it hangs if I try to log in (on the console and SSH). I'm prompted for the username and…
16shells
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Docker Swarm dynamic ingress

I am new to Docker Swarm, and am standing up a small enterprise instance for an organization that plans to use it in part for developers to deploy custom developed apps to. We are able to spin up services and expose them on ports: ie…
Daniel
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Can a Docker Volume plugin be installed via Global Service in Docker Swarm?

I'm currently researching ways to provide stateful storage to docker containers in Docker Swarm. I've come across the vsphere storage for docker volume plugin (https://storagehub.vmware.com/t/vsphere-docker-volume-service/installation-6/)…
duct_tape_coder
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Options to grow a Docker host into an orchestrated [nano]cluster

I'm seeking a little advice, I have a Fedora Server 32 VM as a Docker (not Podman) host. I think I may have outgrown it so basically either I add more resources to the VM or I add another VM and cluster them. Just throwing more resources at it…
Vita
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Is there a way to limit a task to run on certain nodes, but not restrict to?

I'm using a Docker Swarm which spans multiple data centers. The Swarm runs in a "virtual private cloud". One of the data centers participating in the setup has a somewhat slower link than the others. I'd like to avoid a particularly latency…
sbrattla
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When deploying a swarm to kubernetes are swarm labels secrets, config still available?

When deploying a swarm to kubernetes are swarm labels secrets, config still available and accessible through /var/run/docker.sock? I am asking since I have a custom Spring Cloud Gateway implementation that uses Docker Swarm metadata to configure…
Archimedes Trajano
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cAdvisor - sync between nodes

I have a docker swarm running our business stack defined in a docker-compose.yml on two servers (nodes). The docker-compose has defined cAdvisor starting on each of the two nodes like that: cadvisor: image:…
mr.simonski
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Can't attach Docker container to overlay network

I'm trying to replicate a production environment (CentOS 7) on a macbook, the environment consist basically of several docker swarm services that interact with a couple of databases. These databases are in containers attached to the same overlay…
vlizana
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Docker swarm join as manager fails but succeeds as worker

I'm working on creating a 3 manager Docker Swarm using Docker CE 19.03 and three CentOS 7 machines. I've installed docker via yum, enabled the service and started it. I've created a firewalld 'service' and allowed (per docker docs): TCP port 2377…
duct_tape_coder
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Deploy with docker swarm on homogeneous devices without cluster

Is it possible to use docker swarm for deployment of docker containers on homogeneous device? The answer should be yes for clusters right. But the IOT devices are not internally connected and do not have any relation to each other beside the images.…
loose11
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NGINX reverse proxy on root path returns 401 and 404 errors

I'm using NGINX to load balance a docker swarm cluster on Digital Ocean. I have swarmpit installed and I want to reverse proxy to it with an ssl certificate and using a custom port so that I can privately access it and restrict traffic. I'm not…
June
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Will ingress traffic to a global service always be handled locally on that node?

Assuming you run a service exposed on port 80 in global mode, will ingress traffic on port 80 for any given node / host then be handled locally by the instance running on that node? The alternative would be that Swarm load balances the traffic to…
sbrattla
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Using HAProxy in docker with host network

When running HAProxy in a docker container, we can only see (and forward) the original client's IP when running the container with the --net=host option as described here. Our question: Is this advisable from a security standpoint? Will this allow…
Alexander Presber
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Docker Swarm overlay network: ksoftirqd eating up all the CPU

I have a docker swarm overlay network that connects 6 nodes each running 4 containers with highly frequent communication. I have been trying to identify the bottleneck with my network to realize that the culprit is the ksoftirqd process related to…
Nima Afraz
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