The etcdeath repo is a series of scripts and code that punishes etcd clusters into failure. These can be automated and instrumented. The downside is you'll probably have to regularly rebuild your etcd cluster after running several of the tests.
All scripts read the VICTIM environment variable which can either be a single IP or fully-qualified host name. Alternately, you can pass an IP or host name into the script:
flakynet.sh 10.0.1.3
This command would sequentially run each etcd server out of memory by flooding the keyspace with data. Many scripts will have specific variables that you need to tweak like data directory. Everything should be well-commented and you will find all variable declarations at the top of the script.
Another environment variable you can set is UNATTENDED, which allows a script to be run with no human intervention if UNATTENDED=1
Be sure and look at the scripts because they have different options. For example, keyflood has a dynamic payload variable so you can bring etcd to an ignominious end more quickly.
The scripts are divided into directories that describe the primary failure modes. For example, network scripts will do things like drop interfaces or saturate links. The directories are:
- misc
- random failure scenarios
- network
- interface mayhem, saturation, latency
- stress
- io usage, connection bombardment, busy systems