Swarm mode refers to cluster management and orchestration features embedded in Docker Engine. When you initialize a new swarm (cluster) or join nodes to a swarm, the Docker Engine runs in swarm mode.
Questions tagged [docker-swarm-mode]
285 questions
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votes
1 answer
Difference between docker swarm node running as Leader and running as Manager
I wish to understand the difference between docker swarm node running as Leader and running as a Manager.
I also, understand that there can be several docker managers but can there be multiple docker swarm Leader nodes and the reasons for it.
Note:…
Alijma Hanfi
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2 answers
Isolate containers connected to traefik overlay network on swarm
I have multiple stacks running in docker swarm with traefik, where services in each stack are connected to an overlay network (traefik-net) so traefik can talk to them.
If I have a service in each stack that's called the same service name…
mxrlkn
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1 answer
Jenkins Docker Swarm Plugin within Swarm
I have a Jenkins stack running in my Docker Swarm. I want to use the Jenkins Docker Swarm plugin to allow me to use my swarm to spin up slaves, but I cannot figure out the API URI section.
It requires it in the format http://ip:2376 and I can see…
Luke
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Session Persistence using Traefik on Docker Swarm Replicas
I trying to implement sticky session on dockers-swarm with traefik, but I could not achieve session persistence over two replicas on same machine.
In my docker-compose.yml, I have added labels for traefik and added the loadbalancer as well. Below is…
Swastik Roy
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How Swarm mode image orchestration works?
I have setup a 3 node cluster (with no Internet access) with 1 manager and 2 worker-nodes using the standard swarm documentation.
How does the swarm manager in swarm mode know about the images present in worker nodes?
Lets say I have image A in…
syk_coder
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2 answers
Docker swarm tries to parse the value of ENV variable in my compose file (because it has a go template in it) and gives me an error
The error
I try to launch a logspout container and set the log format (an ENV variable) via a docker-compose file. Not too difficult, and if I launch it with docker-compose up, everything works fine. But when I try to launch it with docker swarm…
OLIVIER
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Mount rexray/ceph volume in multiple containers on Docker swarm
What I have done
I have built a Docker Swarm cluster where I am running containers that have persistent data. To allow the container to move to another host in the event of failure I need resilient shared storage across the swarm. After looking into…
BenCaldwell
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1 answer
What is the difference between Clustering management and Orchestration in docker?
I am new to docker, I can not differentiate the two concepts between Clustering and Orchestration in docker swarm. Is there any can help me to make it clear? Thanks!
leo
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Docker Swarm: deploy containers on Worker node
I am trying to deploy the application on multiple instances.
On master node, I used these bunch of commands:
docker swarm init
docker network create --attachable --driver overlay fabric
docker stack deploy --compose-file docker-compose-org2.yaml…
Akshay Sood
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Docker Swarm: Calico node pod is unhealthy
Details:
OS: RHEL 7.4
uname -r: 3.10.0-693.el7.x86_64
Docker version
Client: Docker Enterprise Edition (EE) 2.0
Version: 17.06.2-ee-10
API version: 1.30
Go version: go1.8.7
Git commit: 66261a0
Built: Fri Apr 27 00:38:41 2018
…
CK5
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1 answer
How to use a private registry with docker swarm and traefik in docker
I am running a single node swarm, I am using traefik to manage all my external connections, and I want to run a registry such that I can connect to it at registry.myhost.com
Now all the examples I can see suggest creating a registry as a normal…
user2959736
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Docker swarm service on different nodes can't communicate
I'm running docker in swarm mode where I have some services running on the same overlay network but different nodes.
I'm trying to get the nodes of these services to be able to talk to each other; which works fine until I try to talk cross…
Tom Hadlaw
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1 answer
I can't deploy a Docker Swarm service using ubuntu based image
I'm a newbie in Docker/Docker Swarm and I want to create a custom mosquitto service on Swarm. I created a custom mosquitto image
lcsf/mosquitto3 from ubuntu:latest, then I added some tools (ping, ipconfig). I can run a single container with docker…
Luiz Carlos
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2 answers
Docker swarm node unable to detect service from another host in swarm
My goal is to set up a docker swarm on a group of 3 linux (ubuntu) physical workstations and run a dask cluster on that.
$ docker --version
Docker version 17.06.0-ce, build 02c1d87
I am able to init the docker swarm and add all of the machines to…
Rich
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Correct services hostname configuration in swarm
I'm having some trouble deploying a stack to a local 3-clusters swarm (for now) created with docker-machine.
All services are in the same network and when working locally running docker-compose run.. I have no problem in connecting services using…
Saul Martínez
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