Calico CNI

Installation

• Github - projectcalico/calico
• Calico - manifest
• Install Calico

Tigera Operator

Documentation

Initialize cluster

control_node=10.x.x.x
cidr=192.168.0.0/16 # default
sudo kubeadm init --pod-network-cidr=$cidr --apiserver-advertise-address=$control_node --v=5

Install calico

version=$(curl https://api.github.com/repos/projectcalico/calico/releases/latest | jq -r .tag_name)
kubectl create -f https://raw.githubusercontent.com/projectcalico/calico/$version/manifests/tigera-operator.yaml

curl -O https://raw.githubusercontent.com/projectcalico/calico/$version/manifests/custom-resources.yaml

Custom CIDR

cidr=192.168.0.0/16 # default
sed -i "s/192.168.0.0/$cidr/" custom-resources.yaml
kubectl apply -f custom-resources.yaml

Check CIDR

kubectl get installations.operator.tigera.io default \
  -o jsonpath='{.spec.calicoNetwork.ipPools[*].cidr}{"\n"}'

Calico Manifest

Initialize cluster

control_node=10.x.x.x
cidr=192.168.0.0/16 # default
sudo kubeadm init --pod-network-cidr=$cidr --apiserver-advertise-address=$control_node --v=5

Download manifest

version=$(curl https://api.github.com/repos/projectcalico/calico/releases/latest | jq -r .tag_name)
curl -O https://raw.githubusercontent.com/projectcalico/calico/$version/manifests/calico.yaml

CIDR

cidr=192.168.0.0/16 # default
sed -i "s/# \(.*CALICO_IPV4POOL_CIDR\)/\1/" calico.yaml
sed -i "s/# \(.*\)192.168.0.0/\1$cidr/" calico.yaml
grep -A1 "CALICO_IPV4POOL_CIDR" calico.yaml

Apply manifest

kubectl apply -f calico.yaml

Troubleshoot

nmcli connection show

calico-node in kube-system or calico-system namespace

kubectl set env daemonset/calico-node -n kube-system IP_AUTODETECTION_METHOD=interface=<device> # enp0s8 or enp0s3

kubectl get daemonset/calico-node -n kube-system --output json | jq '.spec.template.spec.containers[].env[] | select(.name | startswith("IP"))'