tremor.jepsen

This repository adds support to tremor for the Jepsen test harness for clustered tremor. Currently, the source targets the RAFT consensus layer of tremor which is under development. ls The docker environment sets up a Jepsen console and 5 nodes for conducting test runs.

Prerequisites

All systems

• Ensure docker is installed
• Ensure docker-compose is installed

On Linux

• There are no known prerequisites apart from git and docker installations.

On Mac OS X

• brew install bash
  • so that the docker/bin/up and docker/bin/console scripts use a more up-to-date bash version ( required by Jepsen up script ).

Usage

Jepsen tests for tremor

Start Jepsen environment with 5 logical nodes

Start the docker test environment

./docker/bin/up --dev

Once 5 nodes have started, run Jepsen test phase

./docker/bin/console
# make the node host keys known to the console machine
rm -rf ~/.ssh/known_hosts
for node in $(echo "n1 n2 n3 n4 n5"); do ssh -oStrictHostKeyChecking=no $node echo "alrighty"; done
# run the jepsen test, use --help to see all the available options
lein run test --rate 100 --concurrency 20 --time-limit 30

#or

lein run test --rate 100 --concurrency 10 --time-limit 30

License

Copyright 2020-2021, The Tremor Team

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.