docker-netns.sh

docker-netns.sh

#!/bin/bash

# Install jq!!!
#
#
command -v jq >/dev/null 2>&1 || echo >&2 'Please install "jq":  apt-get install jq'

NETNS="blue"

# Create docker networks if they not exist yet
docker network create -o com.docker.network.bridge.name=defnet defnet | true
docker network create -o com.docker.network.bridge.name=blunet blunet | true

# Create network namespace
ip netns add ${NETNS}

# Start containers
docker-compose up -d

# Attach all containers network interfaces to the blue netns
for IF in $(ip -j link show master blunet type veth | jq -r .[].ifname); do
	ip link set dev ${IF} netns ${NETNS}
done