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Docker Swarm local cluster
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| deploy() { # Creates a local self-contained deployment cluster. | |
| ping() { | |
| until docker exec -it "$1" docker stats --no-stream > /dev/null | |
| do sleep .5; done | |
| } | |
| # Cleanup | |
| if docker swarm ca > /dev/null 2>&1; then docker swarm leave -f; fi | |
| docker ps -aqf name="$(basename "$PWD")" | xargs docker rm -fv > /dev/null | |
| # OpenSSL TODO Apply https://linuxhandbook.com/docker-remote-access/ | |
| # Variables | |
| readonly LEADER="$(basename "$PWD")-docker-leader" | |
| readonly WORKER="$(basename "$PWD")-docker-worker" | |
| readonly NETWORK="$(basename "$PWD")-cluster-network" | |
| # Network | |
| docker network create "$NETWORK" > /dev/null 2>&1 || true | |
| # Leader | |
| docker run --privileged --name "$LEADER" --network "$NETWORK" \ | |
| -e DOCKER_TLS_CERTDIR= -p 2375:2375 \ | |
| -h "$LEADER" -d docker:dind | |
| ping "$LEADER" | |
| docker -H localhost:2375 swarm init > /dev/null | |
| readonly LEAD_IP=$(docker -H 'localhost:2375' info -f '{{.Swarm.NodeAddr}}') | |
| readonly JOIN_TKN=$(docker -H 'localhost:2375' swarm join-token worker -q) | |
| # Workers | |
| for i in $(seq 3); do # TODO parameterize | |
| docker run --privileged --name "$WORKER-$i" --network "$NETWORK" \ | |
| -h "$WORKER-$i" -d docker:dind | |
| ping "$WORKER-$i" | |
| docker exec -t "$WORKER-$i" \ | |
| docker swarm join --token "$JOIN_TKN" "$LEAD_IP":2377 | |
| done | |
| docker -H 'localhost:2375' node ls | |
| } |
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