dgiot/scripts/start-two-nodes-in-docker.sh
2021-05-22 03:06:00 +09:00

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#!/usr/bin/env bash
set -euo pipefail
## This script takes the first argument as docker iamge name,
## starts two containers running with the built code mount
## into docker containers.
##
## NOTE: containers are not instructed to rebuild emqx,
## Please use a docker image which is compatible with
## the docker host.
##
## EMQX can only start with longname (https://erlang.org/doc/reference_manual/distributed.html)
## The host name part of EMQX's node name has to be static, this means we should either
## pre-assign static IP for containers, or ensure containers can communiate with each other by name
## this is why a docker network is created, and the containers's names have a dot.
# ensure dir
cd -P -- "$(dirname -- "$0")/.."
IMAGE="${1}"
PROJ_DIR="$(pwd)"
NET='emqx.io'
NODE1="node1.$NET"
NODE2="node2.$NET"
COOKIE='this-is-a-secret'
## clean up
docker rm -f "$NODE1" >/dev/null 2>&1 || true
docker rm -f "$NODE2" >/dev/null 2>&1 || true
docker network rm "$NET" >/dev/null 2>&1 || true
docker network create "$NET"
docker run -d -t --restart=always --name "$NODE1" \
--net "$NET" \
-e EMQX_NODE_NAME="emqx@$NODE1" \
-e EMQX_NODE_COOKIE="$COOKIE" \
-e WAIT_FOR_ERLANG=60 \
-p 18083:18083 \
-v "$PROJ_DIR"/_build/emqx/rel/emqx:/built \
"$IMAGE" sh -c 'cp -r /built /emqx && /emqx/bin/emqx console'
docker run -d -t --restart=always --name "$NODE2" \
--net "$NET" \
-e EMQX_NODE_NAME="emqx@$NODE2" \
-e EMQX_NODE_COOKIE="$COOKIE" \
-e WAIT_FOR_ERLANG=60 \
-p 18084:18083 \
-v "$PROJ_DIR"/_build/emqx/rel/emqx:/built \
"$IMAGE" sh -c 'cp -r /built /emqx && /emqx/bin/emqx console'
wait (){
container="$1"
while ! docker exec "$container" /emqx/bin/emqx_ctl status >/dev/null 2>&1; do
echo -n '.'
sleep 1
done
}
wait $NODE1
wait $NODE2
echo
docker exec $NODE1 /emqx/bin/emqx_ctl cluster join "emqx@$NODE2"