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12-CNI-weave.md

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CNI weave

In this section, we will take a look at "CNI Weave in the Kubernetes Cluster"

Deploy Weave

  • Installing weave net onto the Kubernetes cluster with a single command.
$ kubectl apply -f "https://cloud.weave.works/k8s/net?k8s-version=$(kubectl version | base64 | tr -d '\n')"
serviceaccount/weave-net created
clusterrole.rbac.authorization.k8s.io/weave-net created
clusterrolebinding.rbac.authorization.k8s.io/weave-net created
role.rbac.authorization.k8s.io/weave-net created
rolebinding.rbac.authorization.k8s.io/weave-net created
daemonset.apps/weave-net created

Weave Peers

$ kubectl get pods -n kube-system
NAME                                      READY   STATUS             RESTARTS   AGE
coredns-66bff467f8-894jf                  1/1     Running            0          52m
coredns-66bff467f8-nck5f                  1/1     Running            0          52m
etcd-controlplane                         1/1     Running            0          52m
kube-apiserver-controlplane               1/1     Running            0          52m
kube-controller-manager-controlplane      1/1     Running            0          52m
kube-keepalived-vip-mbr7d                 1/1     Running            0          52m
kube-proxy-p2mld                          1/1     Running            0          52m
kube-proxy-vjcwp                          1/1     Running            0          52m
kube-scheduler-controlplane               1/1     Running            0          52m
weave-net-jgr8x                           2/2     Running            0          45m
weave-net-tb9tz                           2/2     Running            0          45m

View the logs of Weave Pod's

$ kubectl logs weave-net-tb9tz weave -n kube-system

View the default route in the Pod

$ kubectl run test --image=busybox --command -- sleep 4500
pod/test created

$ kubectl exec test -- ip route
default via 10.244.1.1 dev eth0

References Docs