Différences

Ci-dessous, les différences entre deux révisions de la page.

--- tech:docker_swarm [2025/03/25 13:55] – Jean-Baptiste
+++ tech:docker_swarm [2025/03/25 14:29] (Version actuelle) – Jean-Baptiste
@@ Ligne 1: / Ligne 1: @@
+<!DOCTYPE markdown>
+{{tag>Docker HA}}
+# Docker Swarm
+Voir :
+* https://github.com/docker/swarmkit/
+* https://devopssec.fr/article/comprendre-gerer-manipuler-un-cluster-docker-swarm
+## Notes générales
+Vous allez avoir besoin d'au moins trois serveurs ou machines virtuelles avec Docker d'installé
+The network ports required for a Docker Swarm to function correctly are:
+    TCP port 2376 for secure Docker client communication. This port is required for Docker Machine to work. Docker Machine is used to orchestrate Docker hosts.
+    TCP port 2377. This port is used for communication between the nodes of a Docker Swarm or cluster. It only needs to be opened on manager nodes.
+    TCP and UDP port 7946 for communication among nodes (container network discovery).
+    UDP port 4789 for overlay network traffic (container ingress networking).
+~~~bash
+ufw allow 22/tcp
+ufw allow 2376/tcp
+# Que sur le Manager
+ufw allow 2377/tcp
+ufw allow 7946/tcp
+ufw allow 7946/udp
+ufw allow 4789/udp
+ufw reload
+ufw enable
+systemctl restart docker
+~~~
+~~~bash
+docker system info
+~~~
+and looking for a ''message Swarm: active''
+Sur le Manager
+~~~bash
+# docker swarm init --advertise-addr 192.168.99.121
+docker swarm init
+~~~
+~~~bash
+docker swarm join --token SWMTKN-1-3pu6hszjas19xyp7ghgosyx9k8atbfcr8p2is99znpy26u2lkl-7p73s1dx5in4tatdymyhg9hu2 192.168.99.121:2377
+~~~
+Voir l'état des nœuds
+~~~bash
+docker node ls
+~~~
+https://www.grottedubarbu.fr/introduction-docker-swarm/
+~~~
+$ openstack server create --image "Ubuntu 20.04" --flavor "s1-4" --key-name "MyKey" --net "Ext-Net" --user-data=docker.yaml my-manager
+$ openstack server create --image "Ubuntu 20.04" --flavor "s1-4" --key-name "MyKey" --net "Ext-Net" --user-data=docker.yaml my-worker1
+$ openstack server create --image "Ubuntu 20.04" --flavor "s1-4" --key-name "MyKey" --net "Ext-Net" --user-data=docker.yaml my-worker2
+~~~
+''docker-compose.yaml''
+~~~yaml
+version: "3"
+services:
+  viz:
+    image: dockersamples/visualizer
+    volumes:
+       - "/var/run/docker.sock:/var/run/docker.sock"
+    ports:
+       - "8080:8080"
+~~~
+~~~bash
+docker stack deploy -c docker-compose.yaml visualizer
+~~~
+Pour vérifier que votre service fonctionne :
+~~~bash
+docker service ls
+~~~
+~~~bash
+docker service ps --no-trunc visualizer
+docker service inspect visualizer
+~~~
+## Registry
+Voir https://docs.docker.com/engine/swarm/stack-deploy/
+~~~bash
+docker service create --name registry --publish published=5000,target=5000 registry:2
+~~~
+~~~bash
+docker service ls
+curl http://localhost:5000/v2/
+~~~
+Test the app with Compose
+~~~bash
+docker-compose up
+~~~
+~~~bash
+docker-compose down --volumes
+~~~
+Push the generated image to the registry
+~~~bash
+docker-compose push
+~~~
+## Déinstall
+~~~bash
+docker service ls
+docker stack rm plop
+docker swarm leave --force
+~~~
+## Autres
+~~~bash
+docker swarm update --snapshot-interval 10000
+systemctl restart docker
+~~~