How to Install Rancher V.2 HA
Make sure your pc has kubectl and rke installed, if not yet install, please refer to this links,
https://kubernetes.io/docs/tasks/tools/install-kubectl/
https://rancher.com/docs/rke/latest/en/installation/
##1##Ssh to 3 nodes , 192.168.0.224, 192.168.0.225, 192.168.0.226
Update vm, sudo apt update –y && sudo apt upgrade –y
Install docker, curl https://releases.rancher.com/install-docker/18.09.sh | sh
add user for user to access docker without root privilege, sudo usermod -aG docker devops
add id_rsa.pub to 3 nodes, ssh-copy-id devops@192.168.0.224, ssh-copy-id devops@192.168.0.225, ssh-copy-id devops@192.168.0.226
add config, vi rancher-knowledge-sharing.yaml
nodes:
- address: 192.168.0.224
internal_address: 192.168.0.224
user: devops
role: [controlplane, worker, etcd]
- address: 192.168.0.225
internal_address: 192.168.0.225
user: devops
role: [controlplane, worker, etcd]
- address: 192.168.0.226
internal_address: 192.168.0.226
user: devops
role: [controlplane, worker, etcd]
services:
etcd:
snapshot: true
creation: 6h
retention: 24h
# Required for external TLS termination with
# ingress-nginx v0.22+
ingress:
provider: nginx
options:
use-forwarded-headers: “true”
Run config earlier, rke up –config rancher-knowledge-sharing.yaml
If failed when running rke up, please repeat rke up 1 more
Move kubeconfig for test cluster, export KUBECONFIG=$(pwd)/kube_config_rancher-knowledge-sharing.yaml
Run kubectl get nodes
Create namespace, kubectl create namespace cattle-system
Deploy cert manager, kubectl apply -f https://raw.githubusercontent.com/jetstack/cert-manager/release-0.12/deploy/manifests/00-crds.yaml
Create namespace for cert-manager, kubectl create namespace cert-manager
Add helm repo and update, helm repo add jetstack https://charts.jetstack.io
Update helm repo, helm repo update
Install jetstack cert-manager, helm install cert-manager jetstack/cert-manager — namespace cert-manager — version v0.12.0
Helm ls –n cert-manager for check helm install in namespace cert-manager
Add repo rancher-stable, helm repo add rancher-stable https://releases.rancher.com/server-charts/stable
Update helm repo, helm repo update
Install rancher-stable, please refer to this docs https://rancher.com/docs/rancher/v2.x/en/installation/k8s-install/helm-rancher/
helm install rancher rancher-stable/rancher — namespace cattle-system — set hostname=rancher-coba.uii.ac.id
Ssh to vm for load-balancer, 192.168.0.227
Install nginx, sudo apt install nginx –y
Config nginx, sudo vi /etc/nginx/nginx.conf
load_module /usr/lib/nginx/modules/ngx_stream_module.so;
worker_processes 4;
worker_rlimit_nofile 40000;
events {
worker_connections 8192;
}
stream {
upstream rancher_servers_http {
least_conn;
server 192.168.0.224:80 max_fails=3 fail_timeout=5s;
server 192.168.0.225:80 max_fails=3 fail_timeout=5s;
server 192.168.0.226:80 max_fails=3 fail_timeout=5s;
}
server {
listen 80;
proxy_pass rancher_servers_http;
}
upstream rancher_servers_https {
least_conn;
server 192.168.0.224:443 max_fails=3 fail_timeout=5s;
server 192.168.0.225:443 max_fails=3 fail_timeout=5s;
server 192.168.0.226:443 max_fails=3 fail_timeout=5s;
}
server {
listen 443;
proxy_pass rancher_servers_https;
}
}
Test and Reload nginx, sudo nginx –t && sudo nginx –s reload
Edit /etc/hosts in local computer/laptop
192.168.0.227 rancher-coba.uii.ac.id
Hostname rancher that we set earlier when install helm rancher.
