A vagrant box provisioned with Ansible (Glassfish/Java7)
Redis in master/slave configuration
PostgreSQL cluster in streaming replication
A glusterfs cluster provisioned by Ansible
Test environment for iperf
A docker swarm cluster provisioned by Ansible
A little script to install FreeBSD as guest on the kvm hypervisor
A python script to check the status of your backups in S3 buckets (it requires Boto)
A redis deployment on k8s
Simple test with linux namespaces
Play with the API of KVM
Playground for BIND9 (DNS daemon)
Playground for learning about the BIRD routing daemon
Playground to learn about eBPF & bpftrace
Playground for distributed locking (backed by ETCD)