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Orca - Level 5

Challenge: Orchestrate

Initialize a one-node Swarm 

docker swarm init

in case you are asked to pick a specific network interface:

ifconfig

# for example if eth1 was picked
docker swarm init --advertise-addr eth1

Deploy a Docker Swarm service 

docker-compose stop
docker stack deploy -c docker-compose.yml orca
docker service ls
docker service ps orca_orca
docker service scale orca_orca=3
docker stack rm orca

Challenge: Prepare for chaos

Run Docker Traffic Control daemon

https://github.com/lukaszlach/docker-tc

docker run -d \
    --name docker-tc \
    --network host \
    --cap-add NET_ADMIN \
    --restart always \
    -v /var/run/docker.sock:/var/run/docker.sock \
    -v /var/docker-tc:/var/docker-tc \
    lukaszlach/docker-tc

Run ping command 

docker network create test
docker run -it --name ping \
    --net test \
    --label "com.docker-tc.enabled=1" \
    --label "com.docker-tc.delay=100ms" \
    --label "com.docker-tc.loss=50%" \
    --label "com.docker-tc.duplicate=50%" \
    busybox \
    ping google.com

Alter traffic control rules 

curl -d'delay=300ms' localhost:4080/ping