This is my documentation for how to in my POC project for Kubernetes deployment using rancher in one of my customer private cloud based on Cloudstack. I assume you have understood the usage, if not please go and check the documentation first to get the how to here

1. 3 Master node for Rancherd control plane and kubernetes etcd masters
2. 3 worker nodes for kubernetes with deployement rancherd agent
3. Cloudstack loadbalancer for Rancher and rancherd HA and exposing HTTP/HTTPS port from kubernetes deployment

IP address allocation

  • for 1st rancher node
  • for 2nd rancher node
  • a public IP address of a domain

OS/VM Configuration

– Ubuntu 20.04
– ufw disabled

#systemctl stop ufw && systemctl disable ufw

– Disable memory swappines

#vi /etc/sysctl.conf
....Add this line at the end....

...Save and Exit...
#sysctl -p

RancherD Instalation On 1st master

  • Download and install rancherD for Master Nodes
#curl -sfL | sh -
#systemctl enable rancherd-server.service
#systemctl start rancherd-server.service

Get token and save it from /var/lib/rancher/rke2/server/node-token. It will be use in the 2nd/3rd master rancherD-agent.

  • Create config /etc/rancher/rke2/config.yaml with rancher url, hostname and ip address of masters
#vi  /etc/rancher/rke2/config.yaml
token: K10b1ffb4084c7a8c75a12062362e5ada0376dec730f54eb3b6d96e83f70b420b34::server:cab9a8cd71bd853b0e80028c64bbffba
   - public-ip-of-domain
  • Restart Rancher
  • Configure the kubectl and kubeconfig
//Check all componen deployed  in logs by setting up kubectl location/path and config location
#export KUBECONFIG=/etc/rancher/rke2/rke2.yaml
//Check deployment status
#kubectl get daemonset rancher -n cattle-system
#kubectl get pod -n cattle-system

Install Rancher on 2nd and N masters

  • Download and install RancherD 
 #curl -sfL | sh -
  • Create config for rke2 to connect each other with the token from 1st master
#vi /etc/rancher/rke2/config.yaml
token: K10b1ffb4084c7a8c75a12062362e5ada0376dec730f54eb3b6d96e83f70b420b34::server:cab9a8cd71bd853b0e80028c64bbffba
  • Enable and start rancherD-agent
#systemctl enable rancherd-agent.service
#systemctl start rancherd-sagent.service
  • Check the log on each node to make sure all connected

Configure TCP load balancer

  • Configure Load balancer for Rancher UI port 8443 to master1-N
  • Configure Load balancer for kubeapi port 6443 to master1-N
  • Configure Load balancer for rancherd port 9345 to master1-N

Then enjoy your Kubernetes deployment using rancherD

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