labs

Local Labs enhanced by Vagrant and Ansible. Apps and tools installations from scratch to practice configuration and management.

VMs shared folder

Shared folders can be used to make simple Data Pipelines where Data Storage is not the learning subject.

Creating folder on Host

sudo mkdir /var/vms_shared_folder/
sudo chown -R $USER /var/vms_shared_folder/

Folder on Guest

ls /var/labs/

Vagrant misc

Bring up the virtual machines

vagrant up

Loads new config if Vagrantfile changes

vagrant reload

SSH config

vagrant ssh-config

After start the VM, it is necessary configure SSH to use the insecure shared key on ~/.ssh/config.

For single machine use the name of the host, for clusters use host name with wildcard:

Single VM sample:

Host airflow-simple
  Hostname 127.0.0.1
  User vagrant
  UserKnownHostsFile /dev/null
  StrictHostKeyChecking no
  PasswordAuthentication no
  IdentityFile ~/.vagrant.d/insecure_private_key
  IdentitiesOnly yes
  LogLevel FATAL

Cluster VM sample:

Host kafka*
  Hostname 127.0.0.1
  User vagrant
  UserKnownHostsFile /dev/null
  StrictHostKeyChecking no
  PasswordAuthentication no
  IdentityFile ~/.vagrant.d/insecure_private_key
  IdentitiesOnly yes
  LogLevel FATAL

Routing to VMs:

The nat_router has a non-internal Host-Only network interface, to route communication to nat_router, create routes bellow on host machine:

sudo ip route add 192.168.60.0/24 via 192.168.56.4
sudo ip route add 192.168.61.0/24 via 192.168.56.4
sudo ip route add 192.168.62.0/24 via 192.168.56.4

Ansible misc

Run a playbook

ansible-playbook playbooks/bigbang.yml -i playbooks/inventory/vagrant.ini

Misc

List opened ports on linux: sudo netstat -tulpn | grep LISTEN