network: Add script to install weave net

This commit removes the routes and adds a script to install
weave net as the overlay network for the cluster created this way.

Signed-off-by: Suraj Deshmukh <[email protected]>

Vagrantfile

@@ -39,15 +39,12 @@ Vagrant.configure("2") do |config|
         c.vm.hostname = "worker-#{n}"
         c.vm.network "private_network", ip: "192.168.199.2#{n}"
 
-        c.vm.provision :shell, :path => "scripts/vagrant-setup-routes.bash"
         c.vm.provision :shell, :path => "scripts/vagrant-setup-hosts-file.bash"
     end
   end
 
   config.vm.define "traefik-0", autostart: false do |c|
       c.vm.hostname = "traefik-0"
       c.vm.network "private_network", ip: "192.168.199.30"
-
-      c.vm.provision :shell, :path => "scripts/vagrant-setup-routes.bash"
   end
 end

config/worker-0-kubelet.service

@@ -18,7 +18,6 @@ ExecStart=/usr/local/bin/kubelet \
   --image-service-endpoint=unix:///var/run/crio/crio.sock \
   --kubeconfig=/var/lib/kubelet/kubeconfig \
   --network-plugin=cni \
-  --pod-cidr=10.20.0.0/16 \
   --register-node=true \
   --runtime-request-timeout=10m \
   --tls-cert-file=/var/lib/kubelet/worker-0.pem \

config/worker-1-kubelet.service

@@ -18,7 +18,6 @@ ExecStart=/usr/local/bin/kubelet \
   --image-service-endpoint=unix:///var/run/crio/crio.sock \
   --kubeconfig=/var/lib/kubelet/kubeconfig \
   --network-plugin=cni \
-  --pod-cidr=10.21.0.0/16 \
   --register-node=true \
   --runtime-request-timeout=10m \
   --tls-cert-file=/var/lib/kubelet/worker-1.pem \

config/worker-2-kubelet.service

@@ -18,7 +18,6 @@ ExecStart=/usr/local/bin/kubelet \
   --image-service-endpoint=unix:///var/run/crio/crio.sock \
   --kubeconfig=/var/lib/kubelet/kubeconfig \
   --network-plugin=cni \
-  --pod-cidr=10.22.0.0/16 \
   --register-node=true \
   --runtime-request-timeout=10m \
   --tls-cert-file=/var/lib/kubelet/worker-2.pem \

scripts/generate-kubelet-service-file

@@ -26,7 +26,6 @@ ExecStart=/usr/local/bin/kubelet \\
   --image-service-endpoint=unix:///var/run/crio/crio.sock \\
   --kubeconfig=/var/lib/kubelet/kubeconfig \\
   --network-plugin=cni \\
-  --pod-cidr=10.2${i}.0.0/16 \\
   --register-node=true \\
   --runtime-request-timeout=10m \\
   --tls-cert-file=/var/lib/kubelet/worker-${i}.pem \\

scripts/setup

@@ -18,6 +18,7 @@ vagrant up
 ./scripts/setup-kubelet-api-cluster-role
 ./scripts/setup-worker-services
 ./scripts/configure-kubectl-on-host
+./scripts/setup-networking
 echo -e "\033[1mFinished. Cluster should be healthy and soon in state ready:\033[0m"
 kubectl get componentstatuses
 kubectl get nodes

scripts/setup-networking

@@ -0,0 +1,6 @@
+#!/bin/bash
+
+set -euo pipefail
+
+# As mentioned in https://www.weave.works/docs/net/latest/kubernetes/kube-addon/#install
+kubectl apply -f https://cloud.weave.works/k8s/net?k8s-version=$(kubectl version | base64 | tr -d '\n')

scripts/setup-worker-services

@@ -33,7 +33,6 @@ cp /vagrant/tools/{conmon,pause} /usr/local/libexec/crio/
 cp /vagrant/tools/{crio.conf,seccomp.json} /etc/crio/
 cp /vagrant/tools/policy.json /etc/containers/
 
-cp "/vagrant/config/$(hostname)-10-bridge.conf" /etc/cni/net.d/10-bridge.conf
 cp /vagrant/config/99-loopback.conf /etc/cni/net.d
 cp "/vagrant/config/$(hostname)-crio.service" /etc/systemd/system/crio.service