libvirt-istiolab-tf

Some Terraform and Ansible scipts to create a 3 leaf + 2 spine + 9 host topology from Debian Cloud machines.

graph TD;
    internet --> eth0;
    eth0 --> virbrN;
    subgraph vrf-main
      leaf01 & leaf02 & leaf03 -->|swpN| spine01 & spine02;
      kube-ctrl01 --> leaf01;
      kube-node01 --> leaf01;
      istio-ingress01 --> leaf01;
      kube-ctrl02 --> leaf02;
      kube-node02 --> leaf02;
      istio-ingress02 --> leaf02;
      kube-ctrl03 --> leaf03;
      kube-node03 --> leaf03;
      istio-ingress03 --> leaf03;
    end
    subgraph mgmt-net
      oob-mgmt-server & leaf01 & leaf02 & leaf03 & spine01 & spine02 -->|eth0| virbrN;
    end

USAGE

1. Use make to create virtual machines

   make create

2. Use make to converge Ansible configuration. This provisions Kubernetes cluster using kubeadm:
   • kube-ctrl01..03 - control plane nodes
   • kube-node01..03 - worker nodes
   • istio-ingress01..03 - Istio external ingress gateway nodes

   make converge

3. Use make to view SSH commands for connecting to virtual machines

   make show

4. Follow instructions to provision Calico and Istio
5. Use make to destroy virtual machines

   make destroy

Remote libvirt

Set libvirt_local=false and libvirt_host variables to

cat > .auto.tfvars <<EOF
libvirt_local=false
libvirt_host="user@host.example.com"
EOF

NOTE: macOS needs cdrtools for cloudinit disk: brew install cdrtools