This repository contains a macOS Keynote presentation about how to perform
resilience tests under Docker for Mac with tc. It focuses on delaying
the (isolated) service and client network in order to test and detect
connection and R/W timeout problems.
-
Run the following command from the project root. This will install all dependencies.
script/bootstrap -
Checkout the commit tagged
start -
Demonstration:
docker-compose up -
Run the presentation from
apps/resilience-talk/res/ -
Stop demo
Ctrl + C docker-compose down -v -
Accompany presentation with commits starting with "ACT-"
While running the demo, screen into Docker for Mac VM and investigate the
networks:
Note: > denote output examples.
# show id of network "slownet"
(host) docker network ls | grep slownet
(host) > f5c43d88f2b6 playground_slownet bridge local
# screen tunnel into the xhyve VM
(vm) screen ~/Library/Containers/com.docker.docker/Data/vms/0/tty
# find network
(vm) ifconfig | grep <id from first command>
(vm) > br-f5c43d88f2b6 Link encap:Ethernet HWaddr 02:42:E7:82:DF:BA
# add a delay rule to the network interface
(vm) tc qdisc add dev br-c0aca63f9c15 root netem delay 500ms
# remove delay rule from the network interface
(vm) tc qdisc del dev br-f5c43d88f2b6 root netem
# disconnect from session but leave it open in the background
Ctrl-a d
# list sessions still running in the background
screen -ls
# reconnect to a session
screen -r <session id>
# kill the current active session
Ctrl-a k
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