Script to reproduce docker network removal issue: network has active endpoints

network-overlay-active-endpoints.sh

#!/bin/sh

# for more info see https://github.com/docker/docker/issues/19261

# Provide values to connect to nodes
cert="client.pem"
key="client-key.pem"

connectionstringnode1="-H=node1:2376 --tls --tlscert=$cert --tlskey=$key"
connectionstringnode2="-H=node2:2376 --tls --tlscert=$cert --tlskey=$key"
networkname="test-net"
containerspernode=4

echo "Creating network $networkname"
docker $connectionstringnode1 network create --driver overlay $networkname

echo "Creating containers"

for nodei in {1..2}
do
    for containeri in  `eval echo {1..$containerspernode}`
    do
        connectionstringvar="connectionstringnode${nodei}"
        connectionstring=${!connectionstringvar}
        containername="alp${nodei}${containeri}"

        docker $connectionstring run -itd --name $containername --network $networkname alpine sh
    done
done

echo "Deleting containers (parallel)"
pids=""

for nodei in {1..2}
do
    for containeri in `eval echo {1..$containerspernode}`
    do
        connectionstringvar="connectionstringnode${nodei}"
        connectionstring=${!connectionstringvar}
        containername="alp${nodei}${containeri}"

        docker $connectionstring rm -fv $containername &
        pids="$pids $!"
    done
done

wait $pids

# Just for incase sleep 5 seconds, although it does not really matter
sleep 5

echo "Inspecting $networkname"
docker $connectionstringnode1 network inspect $networkname
echo "Deleting network $networkname"
docker $connectionstringnode1 network rm $networkname