Install calicoctl in kubernetes cluster

This document explains how to install calicoctl in a kubernetes cluster to check the peering status.

1. Download calicoctl to /usr/local/bin
curl -O -L  https://github.com/projectcalico/calicoctl/releases/download/v3.4.0/calicoctl
chmod +x calicoctl

2. Create calicoctl.cfg in /etc/calico folder on each nodes

root@worker1:/usr/local/bin# cat /etc/calico/calicoctl.cfg
cat /etc/calico/calicoctl.cfg
apiVersion: projectcalico.org/v3
kind: CalicoAPIConfig
metadata:
spec:
  datastoreType: "kubernetes"
  kubeconfig: "/root/.kube/config"   ## point to your kube config of the cluster

3. Check the status from each nodes

root@worker1:/usr/local/bin# calicoctl node status
Calico process is running.

IPv4 BGP status
+--------------+-------------------+-------+----------+-------------+
| PEER ADDRESS |     PEER TYPE     | STATE |  SINCE   |    INFO     |
+--------------+-------------------+-------+----------+-------------+
| 172.16.0.6   | node-to-node mesh | up    | 08:27:06 | Established |
+--------------+-------------------+-------+----------+-------------+