Rancher 2.0 related script

backup_etcd_default_ingress.sh

#!/bin/bash
rke etcd snapshot-save --name SNAPSHOT$(date +"%Y_%m_%d_%k_%M_%S").db --config cluster_default_ingress.yml

cluster_default_ingress.yml

nodes:
    - address: <node1 address>
      user: <account name>
      role:
        - controlplane
        - etcd
        - worker
      hostname_override: kmaster01
    
    - address: <node address>
      user: <account name>
      role:
        - worker
      hostname_override: knode01

# If set to true, RKE will not fail when unsupported Docker version are found
ignore_docker_version: true

# Cluster level SSH private key
# Used if no ssh information is set for the node
ssh_key_path: ./keys/rancher_rsa

# Set the name of the Kubernetes cluster
cluster_name: test-sandbox

services:
  etcd:
    snapshot: true
    creation: 6h
    retention: 24h
    extra_args:
      election-timeout: "5000"
      heartbeat-interval: "500"

create_nginx.sh

mkdir ~/nginx
cd ~/nginx
docker run -p 1080:80 -p 10443:443 --name mynginx -v $PWD/www:/www -v $PWD/conf/nginx.conf:/etc/nginx/nginx.conf -v $PWD/logs:/wwwlogs  -d nginx

nodeslist.sh

#!/bin/bash
nodes=(
        "<account>@<host 1>"
        "<account>@<host 2>"
)

preinstall_docker_centOS.sh

#!/bin/bash
sudo yum install -y yum-utils \
  device-mapper-persistent-data \
  lvm2
sudo yum-config-manager \
    --add-repo \
    https://download.docker.com/linux/centos/docker-ce.repo
    
#check packer version for modify below docker-ce install package version
yum list docker-ce --showduplicates | sort -r
    
sudo yum -y install docker-ce-18.06.1.ce
#since rancher not support 18.06
#sudo yum install -y --setopt=obsoletes=0 \
#  docker-ce-17.03.1.ce-1.el7.centos \
#  docker-ce-selinux-17.03.1.ce-1.el7.centos
  
sudo systemctl start docker
sudo usermod -aG docker $(whoami)

echo 'please logout before you use docker'

preinstall_tool_rancher2.0.sh

#!/bin/bash
cd ~
wget https://github.com/rancher/rke/releases/download/v0.1.11/rke_linux-amd64 && chmod +x rke_linux-amd64

sudo  mv rke_linux-amd64 /usr/local/bin/rke

wget https://storage.googleapis.com/kubernetes-helm/helm-v2.11.0-linux-amd64.tar.gz
tar -zxvf helm-v2.11.0-linux-amd64.tar.gz
sudo mv linux-amd64/helm /usr/local/bin/helm


sudo apt-get update && sudo apt-get install -y apt-transport-https
curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo apt-key add -
echo "deb http://apt.kubernetes.io/ kubernetes-xenial main" | sudo tee -a /etc/apt/sources.list.d/kubernetes.list
sudo apt-get update
sudo apt-get install -y kubectl

preintsall_docker_ubuntu.sh

#!/bin/bash
sudo apt-get update
sudo apt-get upgrade
sudo apt-get install openssh-server -y

#Docker
sudo apt-get install -y apt-transport-https ca-certificates curl software-properties-common
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu  $(lsb_release -cs) stable"
sudo apt-get install -y docker-ce
sudo usermod -aG docker $(whoami)

echo please logout before you use docker

preintsall_docker_ubuntu_noupdate.sh

#!/bin/bash
sudo apt-get update
#sudo apt-get upgrade
sudo apt-get install openssh-server -y

#Docker
sudo apt-get install -y apt-transport-https ca-certificates curl software-properties-common
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu  $(lsb_release -cs) stable"
sudo apt-get install -y docker-ce
sudo usermod -aG docker $(whoami)

echo please logout before you use docker

Rancher 2.0 related script

# Rancher2.0_rke
create Rancher K8s cluster in your local machine

#Steps
1. Download all script and run chmod a+x *.sh
2. run ./preinstall/preinstall_tool_rancher2.0.sh in your local machine
3. use scp to copy preinstall_docker_XXX.sh depence what os to nodes and run it to install docker in all nodes
4. update ./nodeslist.sh for ssh connection with username and hostname
5. run ./ssh_init.sh to generate ssh key and add pub key to all server
6. update cluster_default_ingress.yml
7. run ./setup_rancher_default_ingress_no_loadbalancer.sh

restore_etcd_default_ingress.sh

#!/bin/bash
[ "$1" == "$null" ] && exit

rke etcd snapshot-restore --name $1 --config cluster_default_ingress.yml

#need up again
rke up --config cluster_default_ingress.yml

setup_rancher_default_ingress_no_loadbalancer.sh

#!/bin/bash

rke up --config ./cluster_default_ingress.yml
export KUBECONFIG=$(pwd)/kube_config_cluster_default_ingress.yml

kubectl -n kube-system create serviceaccount tiller
kubectl create clusterrolebinding tiller \
  --clusterrole cluster-admin \
  --serviceaccount=kube-system:tiller

helm init --service-account tiller

helm repo add rancher-stable https://releases.rancher.com/server-charts/stable

helm install stable/cert-manager --name cert-manager --namespace kube-system

helm install rancher-stable/rancher  --name rancher --namespace cattle-system --set hostname=<node1 address>

ssh_init.sh

#!/bin/bash
mkdir -p keys
cd keys
ssh-keygen -t rsa -b 4096 -N '' -f rancher_rsa

cat rancher_rsa
cat rancher_rsa.pub

. ../nodeslist.sh
for ((i = 0; i < ${#nodes[@]}; ++i)); do
        ssh-copy-id -i rancher_rsa.pub ${nodes[$i]}
done

update_rancher_default_ingress_no_loadbalancer.sh

#!/bin/bash

export KUBECONFIG=$(pwd)/kube_config_cluster_default_ingress.yml

helm init --upgrade --service-account tiller
helm repo update
helm get values rancher
helm upgrade rancher rancher-stable/rancher --set hostname=<node1 address>