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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.

186 questions
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Docker Stack Deploy doesn't resolve environment variables with default value like Docker Compose does

I have the following example files docker-compose.yml version: '3' services: web: image: webapp:${VARIABLE_A:-${VARIABLE_B}} env.conf VARIABLE_B=123 VARIABLE_A is not set on purpose so it should fall back to VARIABLE_B Docker compose is able…
RabidTunes
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Get real client remote ip in docker-swarm httpd proxy?

I'm running a httpd apache2 proxy in docker swarm mode with docker stack deploy. Problem: when I access mymachine:80, the access.log only shows the remote ip of the docker ingress swarm network, like 10.0.0.2. And not the real clients' ip. Question:…
membersound
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Credential spec not respected by Docker Swarm?

I've got a Docker swarm hosted on Windows Server 2022. I've created a credentialspec file since I need the service to use a gMSA. I've also defined a compose file to launch my service: version: '3.8' services: agent: image:…
MBender
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Docker contecting to docker swarm service by using 127.0.0.1 as opposed to localhost

Connection to a docker swarm service published port hangs after connecting. I have deployed a docker service using the command below. docker service create --name my-nginx --replicas 1 --publish published=5033,target=80 nginx; The connection to the…
Allan K
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Docker Swarm Ports becomes non responsive

I am running a swarm cluster with only 3 masters. I have a few ports exposed across various services in the swarm. And an Nginx service running in all 3 nodes acts as a reverse proxy. When I start the stacks, all these ports are accessible and…
Lokesh Waran
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Set up a single ip for egress / ingress traffic on a docker swarm

I have a docker swarm with 3 vms: node1: 192.168.10.1 node2: 192.168.10.2 node3: 192.168.10.3 Is it possible to have an ip 192.168.10.4 for both ingress and egress traffic. I know one way of doing the ingress part is with keepalived.
Def Soudani
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Docker Swarm Distributed File System with local storage

I'm looking for a distributed file system solution/network file system which can be used in the following scenario: I have a Docker Swarm with many hosts, but each host is essentially self-contained and looks no different than any other host. We…
Alex Waldenmaier
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Docker container does not register host name in docker-internal DNS

I use Docker to implement a Nextcloud service. For this, I use the official nextcloud-apache image, an Nginx reverse proxy, certbot, and MariaDB. Nothing special, really. My docker instance runs in swarm mode. All containers run together with the…
Andy
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Ensure Docker traffic for node in Swarm exclusively passes through a VPN connection

I have two nodes in a Docker Swarm cluster. One of those nodes has an OpenVPN client connection to a VPN provider on interface tun0. My goals are, Any services assigned to this node exclusively use the VPN connection No leaks (i.e., DNS or other…
Matt Olan
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How to setup privileged in docker swarm?

I am running a db2 container sample using this docker command. Reference docker image docker run -itd --name mydb2 --privileged=true -p 50000:50000 -e LICENSE=accept -e DB2INST1_PASSWORD=Notallowed1! -e DBNAME=testdb ibmcom/db2 It is working. If I…
uday
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External loadbalancer for docker swarm in Openstack Magnum

Does anybody know how to configure an external loadbalancer for docker swarm nodes in openstack magnum? Or is it possible?
Michael Reuben Alagon
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docker swarm container bind address other than 0.0.0.0

I got a multi-node docker swarm setup with the following interfaces: 1: lo: mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope…
tcurdt
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haproxy peers as swarm deployment

I am trying to set up an active-active cluster with swarm and haproxy. I am struggling with the peers definition as it takes hostname and IP address into account. With swarm this can be a bit tricky. I want to use mode host for the ports on the…
The Fool
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How do I upgrade a Mongodb replica set running in a Docker swarm?

I'm running a Mongodb cluster with two routers, 3 config servers as a replica set and 4 single node shard servers. The routers and config servers are running in a Docker swarm but the shards run on bare metal. My objective is to upgrade from version…
Bob C.
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Docker Container Logs for short lived containers

I have a docker swarm stack and an application that run various docker containers to perform certain services. Sometimes those services take 10 minutes, some times, 3 seconds. Looking for a solution to be able to read the docker logs from all of…
d123
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