Deploy kubernetes & Calico Network in air-gapped environment within 20 minutes

highland0971 (25)in #kubernetes • 6 years ago

This is a verified detail installation documents for K8S 1.9.0 + Calico 2.6.5 + Docker 1.12.6 + etcd 3.2.12 + kube-dns 1.14.7.

In this article we focus on how to setup a complete functional Kubernetes cluster with Calico Network solution and Docker Private Registry in an air-gapped environment, which is the common scene for lots of companies.

1. Pre-defined environment vars

The following pre-defined env-vars should set on the Internet available host (for packages and binaries pre-download) and INSTALLATION_BASE host (Which can access air-gapped deployment cluster, for installation launch.)

export DOCKER_CLIENT_USER=highland #For users which need docker CLI access
export K8S_NODE01=jin #Kubernetes target deploy node
export K8S_NODE02=mu
export K8S_NODE03=shui
export K8S_NODE04=huo
export K8S_NODE01_IP=192.168.122.180 #Kubernetes target deploy node ip
export K8S_NODE02_IP=192.168.122.117
export K8S_NODE03_IP=192.168.122.52
export K8S_NODE04_IP=192.168.122.102
export K8S_NODES="$K8S_NODE01 $K8S_NODE02 $K8S_NODE03 $K8S_NODE04"
export ETCD_CLIENT_PORT=2379 #ETCD daemon client listen port
export ETCD_PEER_PORT=2380  #ETCD daemon peer listen port
export ETCD1_IP=$K8S_NODE02_IP  #ETCD daemon node ip
export ETCD2_IP=$K8S_NODE03_IP
export ETCD3_IP=$K8S_NODE04_IP
export ETCD_IP_ARRAY=($ETCD1_IP $ETCD2_IP $ETCD3_IP)
export ETCD_NODES="$K8S_NODE02 $K8S_NODE03 $K8S_NODE04"
export ETCD_NODE_ARRAY=($K8S_NODE02 $K8S_NODE03 $K8S_NODE04)
export ETCD_ENDPOINTS=https://$ETCD1_IP:$ETCD_CLIENT_PORT,https://$ETCD2_IP:$ETCD_CLIENT_PORT,https://$ETCD3_IP:$ETCD_CLIENT_PORT
export PRIVATE_REGISTRY_SERV=$K8S_NODE02 #Private docker registry deployment node
export PRIVATE_REGISTRY_SERV_IP=$K8S_NODE02_IP
export PRIVATE_REGISTRY=${PRIVATE_REGISTRY_SERV}:443 #Private docker registry service address
export KUBE_MASTER_SERV_01=$K8S_NODE01 #The Non-HA K8S cluster master node
export KUBE_MASTER_SERV_IP_01=$K8S_NODE01_IP
export KUBE_APISERVER_IP_01=$KUBE_MASTER_SERV_IP_01 #The Non-HA K8S cluster apiserver node
export KUBE_APISERVER_PORT=6443
export KUBE_APISERVER=https://$KUBE_APISERVER_IP_01:${KUBE_APISERVER_PORT}
export KUBE_CLUSTER_SERVICE_IP=172.16.0.1  #The kubernetes cluster ip address
export KUBE_CLUSTER_SERVICE_CIDR=172.16.0.1/16  #The kubernetes cluster CIDR address
export KUBE_CLUSTER_POD_CIDR=172.17.0.1/16  #The kubernetes cluster pods CIDR address
export CLUSTER_DNS_IP=172.16.0.10 #The kubernetes kube-dns service address

export K8S_BASE_VER=v1.9.0
export K8S_DNS_VER=1.14.7
export K8S_PAUSE_VER=3.1
export CALICO_CONTROLLER_VER=v1.0.2
export CALICO_NODE_VER=v2.6.5
export CALICO_CNI_VER=v1.11.2

export K8S_PROXY_VER=${K8S_BASE_VER}
export K8S_PAUSE_IMG_NAME=pause-amd64
export K8S_PROXY_IMG_NAME=kube-proxy
export K8S_KUBE_DNS_IMG_NAME=k8s-dns-kube-dns-amd64
export K8S_DNSMASQ_IMG_NAME=k8s-dns-dnsmasq-nanny-amd64
export K8S_SIDECAR_IMG_NAME=k8s-dns-sidecar-amd64

export CALICO_CONTROLLER_IMG_NAME=kube-controllers
export CALICO_NODE_IMAGE_NAME=node
export CALICO_CNI_IMAGE_NAME=cni

export GCR_IMAGES="kube-aggregator kube-controller-manager ${K8S_PROXY_IMG_NAME} kube-scheduler kube-apiserver"

Run this on installation base host(INSTALLATION_BASE)

#Change the hostname on each node if needed
for node in $K8S_NODES ; do
  ssh $node hostnamectl set-hostname $node
done

#Setup ssh passwordless login and hostname resolve
for node in $K8S_NODES ; do
  ssh-copy-id -f $node
  ssh $node "echo $K8S_NODE01_IP $K8S_NODE01 >> /etc/hosts"
  ssh $node "echo $K8S_NODE02_IP $K8S_NODE02 >> /etc/hosts"
  ssh $node "echo $K8S_NODE03_IP $K8S_NODE03 >> /etc/hosts"
  ssh $node "echo $K8S_NODE04_IP $K8S_NODE04 >> /etc/hosts"
done

2. Download required images and binaries for K8S,Etcd,Docker,Calico,cfssl

Run the following scripts on Internet available hosts with Docker pre-installed

cd
mkdir -p all-in-one/bin
mkdir -p all-in-one/images
mkdir -p all-in-one/rpms
mkdir -p all-in-one/mixture
mkdir -p all-in-one/configs

# For Docker,recommend run the following command on a clean linux host without and packages post installed
yum update && yum install -y --downloadonly  --downloaddir=all-in-one/rpms docker
yum reinstall -y --downloadonly --downloaddir=all-in-one/rpms docker

#For kubernetes client & server binary
curl -L https://dl.k8s.io/${K8S_BASE_VER}/kubernetes-client-linux-amd64.tar.gz -o all-in-one/mixture/kubernetes-client-linux-amd64.tar.gz
curl -L https://dl.k8s.io/${K8S_BASE_VER}/kubernetes-server-linux-amd64.tar.gz -o all-in-one/mixture/kubernetes-server-linux-amd64.tar.gz

# For kube-dns
for img in $K8S_KUBE_DNS_IMG_NAME $K8S_DNSMASQ_IMG_NAME $K8S_SIDECAR_IMG_NAME ; do
  echo tar highland0971/${img}:${K8S_DNS_VER}
  docker pull highland0971/${img}:${K8S_DNS_VER} && \
  docker tag highland0971/${img}:${K8S_DNS_VER} ${PRIVATE_REGISTRY}/${img}:${K8S_DNS_VER} && \
  docker save ${PRIVATE_REGISTRY}/${img}:${K8S_DNS_VER} -o all-in-one/images/${img}:${K8S_DNS_VER}.tar
done

docker pull highland0971/${K8S_KUBE_DNS_IMG_NAME}:${K8S_DNS_VER} && \
docker tag highland0971/${K8S_KUBE_DNS_IMG_NAME}:${K8S_DNS_VER} ${PRIVATE_REGISTRY}/${K8S_KUBE_DNS_IMG_NAME}:${K8S_DNS_VER} && \
docker save ${PRIVATE_REGISTRY}/${K8S_KUBE_DNS_IMG_NAME}:${K8S_DNS_VER} -o all-in-one/images/${K8S_KUBE_DNS_IMG_NAME}:${K8S_DNS_VER}.tar

# For pause
docker pull highland0971/${K8S_PAUSE_IMG_NAME}:${K8S_PAUSE_VER} && \
docker tag highland0971/${K8S_PAUSE_IMG_NAME}:${K8S_PAUSE_VER} ${PRIVATE_REGISTRY}/${K8S_PAUSE_IMG_NAME}:${K8S_PAUSE_VER} && \
docker save ${PRIVATE_REGISTRY}/${K8S_PAUSE_IMG_NAME}:${K8S_PAUSE_VER} -o all-in-one/images/${K8S_PAUSE_IMG_NAME}:${K8S_PAUSE_VER}.tar

# For registry
docker pull registry && \
docker save docker.io/registry:latest -o all-in-one/images/docker-io.registry.tar

# For cfssl tools
export CFSSL_URL="https://pkg.cfssl.org/R1.2"
curl -L "${CFSSL_URL}/cfssl_linux-amd64" -o all-in-one/bin/cfssl
curl -L "${CFSSL_URL}/cfssljson_linux-amd64" -o all-in-one/bin/cfssljson
chmod +x all-in-one/bin/cfssl*

# For etcd
export ETCD_URL="https://github.com/coreos/etcd/releases/download"
curl -L "${ETCD_URL}/v3.2.12/etcd-v3.2.12-linux-amd64.tar.gz" -o all-in-one/bin/etcd-v3.2.12-linux-amd64.tar.gz

# For Calico
export CALICO_URL="https://docs.projectcalico.org/v2.6/getting-started/kubernetes/installation"
curl -L "${CALICO_URL}/rbac.yaml" -o all-in-one/configs/calico-rbac.yaml
curl -L "${CALICO_URL}/hosted/calico.yaml" -o all-in-one/configs/calico-deploy.yaml.conf

docker pull quay.io/calico/${CALICO_CONTROLLER_IMG_NAME}:${CALICO_CONTROLLER_VER} && \
docker tag quay.io/calico/${CALICO_CONTROLLER_IMG_NAME}:${CALICO_CONTROLLER_VER} ${PRIVATE_REGISTRY}/calico/${CALICO_CONTROLLER_IMG_NAME}:${CALICO_CONTROLLER_VER} && \
docker save ${PRIVATE_REGISTRY}/calico/${CALICO_CONTROLLER_IMG_NAME}:${CALICO_CONTROLLER_VER} -o all-in-one/images/calico_${CALICO_CONTROLLER_IMG_NAME}:${CALICO_CONTROLLER_VER}.tar

docker pull quay.io/calico/${CALICO_NODE_IMAGE_NAME}:${CALICO_NODE_VER} && \
docker tag quay.io/calico/${CALICO_NODE_IMAGE_NAME}:${CALICO_NODE_VER} ${PRIVATE_REGISTRY}/calico/${CALICO_NODE_IMAGE_NAME}:${CALICO_NODE_VER} && \
docker save ${PRIVATE_REGISTRY}/calico/${CALICO_NODE_IMAGE_NAME}:${CALICO_NODE_VER} -o all-in-one/images/calico_${CALICO_NODE_IMAGE_NAME}:${CALICO_NODE_VER}.tar

docker pull quay.io/calico/${CALICO_CNI_IMAGE_NAME}:${CALICO_CNI_VER} && \
docker tag quay.io/calico/${CALICO_CNI_IMAGE_NAME}:${CALICO_CNI_VER} ${PRIVATE_REGISTRY}/calico/${CALICO_CNI_IMAGE_NAME}:${CALICO_CNI_VER} && \
docker save ${PRIVATE_REGISTRY}/calico/${CALICO_CNI_IMAGE_NAME}:${CALICO_CNI_VER} -o all-in-one/images/calico_${CALICO_CNI_IMAGE_NAME}:${CALICO_CNI_VER}.tar

# Archive and check
tar -czf all-in-one.tar.gz all-in-one
tar -ztf all-in-one.tar.gz
# all-in-one/
# all-in-one/bin/
# all-in-one/bin/cfssl
# all-in-one/bin/cfssljson
# all-in-one/bin/etcd-v3.2.12-linux-amd64.tar.gz
# all-in-one/images/
# all-in-one/images/pause-amd64:3.1.tar
# all-in-one/images/docker-io.registry.tar
# all-in-one/images/k8s-dns-kube-dns-amd64:1.14.7.tar
# all-in-one/images/calico_kube-controllers:v1.0.2.tar
# all-in-one/images/calico_node:v2.6.5.tar
# all-in-one/images/calico_cni:v1.11.2.tar
# all-in-one/images/k8s-dns-dnsmasq-nanny-amd64:1.14.7.tar
# all-in-one/images/k8s-dns-sidecar-amd64:1.14.7.tar
# all-in-one/rpms/
# all-in-one/rpms/docker-1.12.6-68.gitec8512b.el7.centos.x86_64.rpm
# all-in-one/rpms/audit-libs-python-2.7.6-3.el7.x86_64.rpm
# all-in-one/rpms/checkpolicy-2.5-4.el7.x86_64.rpm
# all-in-one/rpms/container-selinux-2.33-1.git86f33cd.el7.noarch.rpm
# all-in-one/rpms/container-storage-setup-0.8.0-3.git1d27ecf.el7.noarch.rpm
# all-in-one/rpms/docker-client-1.12.6-68.gitec8512b.el7.centos.x86_64.rpm
# all-in-one/rpms/docker-common-1.12.6-68.gitec8512b.el7.centos.x86_64.rpm
# all-in-one/rpms/libcgroup-0.41-13.el7.x86_64.rpm
# all-in-one/rpms/libsemanage-python-2.5-8.el7.x86_64.rpm
# all-in-one/rpms/oci-register-machine-0-3.13.gitcd1e331.el7.x86_64.rpm
# all-in-one/rpms/oci-systemd-hook-0.1.14-1.git1ba44c6.el7.x86_64.rpm
# all-in-one/rpms/oci-umount-2.3.0-1.git51e7c50.el7.x86_64.rpm
# all-in-one/rpms/policycoreutils-python-2.5-17.1.el7.x86_64.rpm
# all-in-one/rpms/python-IPy-0.75-6.el7.noarch.rpm
# all-in-one/rpms/setools-libs-3.3.8-1.1.el7.x86_64.rpm
# all-in-one/rpms/skopeo-containers-0.1.26-2.dev.git2e8377a.el7.centos.x86_64.rpm
# all-in-one/rpms/yajl-2.0.4-4.el7.x86_64.rpm
# all-in-one/mixture/
# all-in-one/mixture/kubernetes-server-linux-amd64.tar.gz
# all-in-one/mixture/kubernetes-client-linux-amd64.tar.gz
# all-in-one/configs/
# all-in-one/configs/calico-rbac.yaml
# all-in-one/configs/calico-deploy.yaml
# all-in-one/configs/calico-deploy.yaml.conf

Distribute to target installation base host
You can change the distribution method depends on your environment

# define ${INSTALLATION_BASE} as you wanted
scp all-in-one.tar.gz ${INSTALLATION_BASE}:~/
ssh ${INSTALLATION_BASE} tar -zxf ~/all-in-one.tar.gz

The following scripts executed on INSTALLATION_BASE

3. Prepare kubelet runtime environment

for node in ${K8S_NODES} ;do
  echo Disable swap file on ${node}
  ssh ${node} swapoff -a
  ssh ${node} "grep 'swap' /etc/fstab && cp /etc/fstab /etc/fstab.with_swap && echo orginal /etc/fstab file has been backup to etc/fstab.with_swap "
  ssh ${node} sed -i '/swap/d' /etc/fstab

  echo Disable SeLinux on ${node}
  ssh $node setenforce 0
  ssh $node "sed -i 's/SELINUX=enforcing/SELINUX=permissive/g' /etc/selinux/config"

  echo Disable firewalld on ${node}
  ssh $node systemctl stop firewalld
  ssh $node systemctl disable firewalld
done

4. Install `Docker`

Install Docker on target hosts

# Scp docker rpm packages to each nodes, passwdless environment must be set previously for root user
# Execute current command as root

for node in ${K8S_NODES} ; do
  ssh $node mkdir ~/rpms -p
  scp all-in-one/rpms/* ${node}:~/rpms
  ssh $node rpm -ivh ~/rpms/*.rpm
  ssh $node groupadd docker
  ssh $node usermod -aG docker $DOCKER_CLIENT_USER
  ssh $node "sed -i '/^ExecReload/i\ExecStartPost=\/sbin\/iptables -I FORWARD -s 0.0.0.0\/0 -j ACCEPT' /lib/systemd/system/docker.service"
  ssh $node systemctl disable docker
  ssh $node systemctl enable docker
  ssh $node systemctl stop docker
  ssh $node systemctl start docker
done

5. Setup private registry service

cd
cp all-in-one/bin/cfssl* /usr/local/bin/
scp all-in-one/images/docker-io.registry.tar ${PRIVATE_REGISTRY_SERV}:~/
ssh ${PRIVATE_REGISTRY_SERV} docker load -i ~/docker-io.registry.tar
ssh ${PRIVATE_REGISTRY_SERV} mkdir /etc/docker/ssl -p

mkdir certs/docker -p
#Generate docker CA
cat <<EOF > certs/ca-config.json
{
  "signing":{
    "default":{
      "expiry":"87600h"
    },
    "profiles":{
      "default":{
        "usages":[
        "signing",
        "key encipherment",
        "server auth",
        "client auth"
        ],
        "expiry":"87600h"
      }
    }
  }
}
EOF

cat <<EOF > certs/docker/docker-ca-csr.json
{
  "CN":"docker-ca",
  "key":{
    "algo":"rsa",
    "size":2048
  },
  "names":[
    {
      "C":"cn",
      "ST":"DreamState",
      "L":"DreamCity",
      "O":"DreamOrganization",
      "OU":"DockerPrivateRegistry"
    }
  ]
}
EOF

cfssl gencert -initca certs/docker/docker-ca-csr.json | cfssljson -bare certs/docker/docker-ca

#Generate docker TLS certificates
cat <<EOF > certs/docker/private-registry-csr.json
{
  "CN":"private-registry",
  "hosts":[
    "127.0.0.1",
    "${PRIVATE_REGISTRY_SERV_IP}",
    "${PRIVATE_REGISTRY_SERV}"    
  ],
  "key":{
    "algo":"rsa",
    "size":2048
  },
  "names":[
    {
      "C":"cn",
      "ST":"DreamState",
      "L":"DreamCity",
      "O":"DreamOrganization",
      "OU":"DockerPrivateRegistry"
    }
  ]
}
EOF

cfssl gencert -ca=certs/docker/docker-ca.pem \
  -ca-key=certs/docker/docker-ca-key.pem \
  -config=certs/ca-config.json \
  -profile=default \
  certs/docker/private-registry-csr.json | cfssljson -bare certs/docker/private-registry

#Make private registry trusted in the nodes by copy Docker CA file to /etc/docker/certs.d/${PRIVATE_REGISTRY}
for node in ${K8S_NODES} ; do
  ssh ${node} mkdir -p /etc/docker/certs.d/${PRIVATE_REGISTRY}
  scp certs/docker/docker-ca.pem ${node}:/etc/docker/certs.d/${PRIVATE_REGISTRY}/ca.crt
done

#Start the private registry service
ssh ${PRIVATE_REGISTRY_SERV} mkdir -p /etc/docker/ssl
scp certs/docker/private-registry*.pem ${PRIVATE_REGISTRY_SERV}:/etc/docker/ssl
ssh ${PRIVATE_REGISTRY_SERV} mkdir -p /mnt/registry
ssh ${PRIVATE_REGISTRY_SERV} "docker run -d --restart=always -v /mnt/registry:/var/lib/registry -v /etc/docker/ssl:/certs -e REGISTRY_HTTP_ADDR=0.0.0.0:443 -e REGISTRY_HTTP_TLS_CERTIFICATE=/certs/private-registry.pem -e REGISTRY_HTTP_TLS_KEY=/certs/private-registry-key.pem -p 443:443 --name private-registry registry"
ssh ${PRIVATE_REGISTRY_SERV} docker logs private-registry

6. Distribute K8s binaries and images to nodes

cd

tar -zxf all-in-one/mixture/kubernetes-client-linux-amd64.tar.gz
tar -zxf all-in-one/mixture/kubernetes-server-linux-amd64.tar.gz

for node in ${K8S_NODES} ; do
  echo Process node ${node}.....
  scp kubernetes/server/bin/kubectl ${node}:/usr/local/bin
  scp kubernetes/server/bin/kubelet ${node}:/usr/local/bin
  ssh ${node} chmod +x /usr/local/bin/kube*
done

ssh ${PRIVATE_REGISTRY_SERV} mkdir ~/images
scp kubernetes/server/bin/*.tar ${PRIVATE_REGISTRY_SERV}:~/images
scp all-in-one/images/*.tar ${PRIVATE_REGISTRY_SERV}:~/images

ssh ${PRIVATE_REGISTRY_SERV} docker load -i images/${K8S_PAUSE_IMG_NAME}:${K8S_PAUSE_VER}.tar
ssh ${PRIVATE_REGISTRY_SERV} docker push  ${PRIVATE_REGISTRY}/${K8S_PAUSE_IMG_NAME}:${K8S_PAUSE_VER}
ssh ${PRIVATE_REGISTRY_SERV} docker rmi  ${PRIVATE_REGISTRY}/${K8S_PAUSE_IMG_NAME}:${K8S_PAUSE_VER}

for img in $K8S_KUBE_DNS_IMG_NAME $K8S_DNSMASQ_IMG_NAME $K8S_SIDECAR_IMG_NAME ; do
  echo push ${PRIVATE_REGISTRY}/${img}:${K8S_DNS_VER}
  ssh ${PRIVATE_REGISTRY_SERV} docker load -i images/${img}:${K8S_DNS_VER}.tar
  ssh ${PRIVATE_REGISTRY_SERV} docker push  ${PRIVATE_REGISTRY}/${img}:${K8S_DNS_VER}
  ssh ${PRIVATE_REGISTRY_SERV} docker rmi  ${PRIVATE_REGISTRY}/${img}:${K8S_DNS_VER}
done

ssh ${PRIVATE_REGISTRY_SERV} docker load -i images/calico_${CALICO_CONTROLLER_IMG_NAME}:${CALICO_CONTROLLER_VER}.tar
ssh ${PRIVATE_REGISTRY_SERV} docker push  ${PRIVATE_REGISTRY}/calico/${CALICO_CONTROLLER_IMG_NAME}:${CALICO_CONTROLLER_VER}
ssh ${PRIVATE_REGISTRY_SERV} docker rmi  ${PRIVATE_REGISTRY}/calico/${CALICO_CONTROLLER_IMG_NAME}:${CALICO_CONTROLLER_VER}

ssh ${PRIVATE_REGISTRY_SERV} docker load -i images/calico_${CALICO_NODE_IMAGE_NAME}:${CALICO_NODE_VER}.tar
ssh ${PRIVATE_REGISTRY_SERV} docker push  ${PRIVATE_REGISTRY}/calico/${CALICO_NODE_IMAGE_NAME}:${CALICO_NODE_VER}
ssh ${PRIVATE_REGISTRY_SERV} docker rmi  ${PRIVATE_REGISTRY}/calico/${CALICO_NODE_IMAGE_NAME}:${CALICO_NODE_VER}

ssh ${PRIVATE_REGISTRY_SERV} docker load -i images/calico_${CALICO_CNI_IMAGE_NAME}:${CALICO_CNI_VER}.tar
ssh ${PRIVATE_REGISTRY_SERV} docker push  ${PRIVATE_REGISTRY}/calico/${CALICO_CNI_IMAGE_NAME}:${CALICO_CNI_VER}
ssh ${PRIVATE_REGISTRY_SERV} docker rmi  ${PRIVATE_REGISTRY}/calico/${CALICO_CNI_IMAGE_NAME}:${CALICO_CNI_VER}

export gcr=gcr.io/google_containers
for img in ${GCR_IMAGES} ; do
  echo push ${PRIVATE_REGISTRY}/${img}:${K8S_BASE_VER}
  ssh ${PRIVATE_REGISTRY_SERV} docker load -i ~/images/${img}.tar
  ssh ${PRIVATE_REGISTRY_SERV} docker tag ${gcr}/${img}:${K8S_BASE_VER}  ${PRIVATE_REGISTRY}/${img}:${K8S_BASE_VER}
  ssh ${PRIVATE_REGISTRY_SERV} docker push  ${PRIVATE_REGISTRY}/${img}:${K8S_BASE_VER}
  ssh ${PRIVATE_REGISTRY_SERV} docker rmi ${gcr}/${img}:${K8S_BASE_VER}
  ssh ${PRIVATE_REGISTRY_SERV} docker rmi  ${PRIVATE_REGISTRY}/${img}:${K8S_BASE_VER}
done

ssh ${PRIVATE_REGISTRY_SERV} rm -rf images

7. Setup `etcd` daemon

prepare certificates

cd
mkdir -p certs/etcd
cat <<EOF > certs/etcd/etcd-ca-csr.json
{
  "CN":"etcd-ca",
  "key":{
    "algo":"rsa",
    "size":2048
  },
  "names":[
    {
      "C":"cn",
      "ST":"DreamState",
      "L":"DreamCity",
      "O":"DreamOrganization",
      "OU":"etcd"
    }
  ]
}
EOF
cfssl gencert -initca certs/etcd/etcd-ca-csr.json | cfssljson -bare certs/etcd/etcd-ca

cat <<EOF > certs/etcd/etcd-csr.json
{
  "CN":"etcd",
  "hosts":[
    "127.0.0.1",
    "${ETCD1_IP}",
    "${ETCD2_IP}",
    "${ETCD3_IP}"
  ],
  "key":{
    "algo":"rsa",
    "size":2048
  },
  "names":[
    {
      "C":"cn",
      "ST":"DreamState",
      "L":"DreamCity",
      "O":"DreamOrganization",
      "OU":"etcd"
    }
  ]
}
EOF

cfssl gencert -ca=certs/etcd/etcd-ca.pem \
  -ca-key=certs/etcd/etcd-ca-key.pem \
  -config=certs/ca-config.json \
  -profile=default \
  certs/etcd/etcd-csr.json | cfssljson -bare certs/etcd/etcd

for node in ${ETCD_NODES} ;do
  echo Copy certs to $node ...
  ssh ${node} mkdir -p /etc/etcd/ssl
  scp certs/etcd/* ${node}:/etc/etcd/ssl
done

prepare binaries and configs

cd
tar -zxf  all-in-one/bin/etcd-v3.2.12-linux-amd64.tar.gz

let node_idx=0
for node in ${ETCD_NODES} ;do
  echo process node ${node}
  ssh ${node} "systemctl stop etcd.service && systemctl disable etcd.service"
  scp etcd-v3.2.12-linux-amd64/etcd* ${node}:/usr/local/bin
  ssh ${node} groupadd etcd
  ssh ${node} "useradd -c 'Etcd user' -g etcd -s /sbin/nologin -r etcd"
  ssh ${node} mkdir -p /var/lib/etcd
  ssh ${node} chown etcd:etcd -R /var/lib/etcd /etc/etcd
  cat << EOF > etcd.conf
# [member]
ETCD_NAME=${node}
ETCD_DATA_DIR=/var/lib/etcd
ETCD_LISTEN_PEER_URLS=https://0.0.0.0:${ETCD_PEER_PORT}
ETCD_LISTEN_CLIENT_URLS=https://0.0.0.0:${ETCD_CLIENT_PORT}
ETCD_PROXY=off

# [cluster]
ETCD_ADVERTISE_CLIENT_URLS=https://${ETCD_IP_ARRAY[${node_idx}]}:${ETCD_CLIENT_PORT}
ETCD_INITIAL_ADVERTISE_PEER_URLS=https://${ETCD_IP_ARRAY[${node_idx}]}:${ETCD_PEER_PORT}
ETCD_INITIAL_CLUSTER=${ETCD_NODE_ARRAY[0]}=https://${ETCD_IP_ARRAY[0]}:${ETCD_PEER_PORT},${ETCD_NODE_ARRAY[1]}=https://${ETCD_IP_ARRAY[1]}:${ETCD_PEER_PORT},${ETCD_NODE_ARRAY[2]}=https://${ETCD_IP_ARRAY[2]}:${ETCD_PEER_PORT}
ETCD_INITIAL_CLUSTER_STATE=new
ETCD_INITIAL_CLUSTER_TOKEN=etcd-k8s-cluster

# [security]
ETCD_CERT_FILE="/etc/etcd/ssl/etcd.pem"
ETCD_KEY_FILE="/etc/etcd/ssl/etcd-key.pem"
ETCD_CLIENT_CERT_AUTH="true"
ETCD_TRUSTED_CA_FILE="/etc/etcd/ssl/etcd-ca.pem"
ETCD_AUTO_TLS="true"
ETCD_PEER_CERT_FILE="/etc/etcd/ssl/etcd.pem"
ETCD_PEER_KEY_FILE="/etc/etcd/ssl/etcd-key.pem"
ETCD_PEER_CLIENT_CERT_AUTH="true"
ETCD_PEER_TRUSTED_CA_FILE="/etc/etcd/ssl/etcd-ca.pem"
ETCD_PEER_AUTO_TLS="true"
EOF

  cat <<EOF > etcd.service
[Unit]
Description=Etcd Service
After=network.target

[Service]
EnvironmentFile=-/etc/etcd/etcd.conf
Type=simple
User=etcd
PermissionsStartOnly=true
ExecStart=/usr/local/bin/etcd
Restart=on-failure
RestartSec=10
LimitNOFILE=65536

[Install]
WantedBy=multi-user.target
EOF

  ssh ${node} mkdir -p /etc/etcd
  ssh ${node} mkdir -p /var/lib/etcd
  scp etcd.conf ${node}:/etc/etcd
  scp etcd.service ${node}:/lib/systemd/system
  ssh ${node} chown etcd:etcd -R /var/lib/etcd /etc/etcd

  ssh ${node} systemctl enable etcd.service
  ssh ${node} systemctl start etcd.service

  ssh ${node} ETCDCTL_API=3 etcdctl --cacert=/etc/etcd/ssl/etcd-ca.pem --cert=/etc/etcd/ssl/etcd.pem --key=/etc/etcd/ssl/etcd-key.pem  --endpoints="https://${ETCD_IP_ARRAY[${node_idx}]}:${ETCD_CLIENT_PORT}" endpoint health
  ssh ${node} etcdctl --ca-file=/etc/etcd/ssl/etcd-ca.pem -cert-file=/etc/etcd/ssl/etcd.pem -key-file=/etc/etcd/ssl/etcd-key.pem  --endpoints=https://${ETCD_IP_ARRAY[${node_idx}]}:${ETCD_CLIENT_PORT} cluster-health

  let node_idx=${node_idx}+1
done

8. Prepare certificate for `K8s`

cd
mkdir -p certs/k8s

#For kubernetes root CA file
cat <<EOF > certs/k8s/k8s-ca-csr.json
{
  "CN":"kubernetes",
  "key":{
    "algo":"rsa",
    "size":2048
  },
  "names":[
    {
      "C":"cn",
      "ST":"DreamState",
      "L":"DreamCity",
      "O":"DreamOrganization",
      "OU":"DreamSystem"
    }
  ]
}
EOF
cfssl gencert -initca certs/k8s/k8s-ca-csr.json | cfssljson -bare certs/k8s/k8s-ca

#For API server certificates
cat <<EOF > certs/k8s/kube-apiserver-csr.json
{
  "CN":"kube-apiserver",
  "hosts":[
    "127.0.0.1",
    "${KUBE_MASTER_SERV_IP_01}",
    "${KUBE_MASTER_SERV_01}",
    "${KUBE_CLUSTER_SERVICE_IP}",
    "kubernetes",
    "kubernetes.default",
    "kubernetes.default.svc",
    "kubernetes.default.svc.cluster",
    "kubernetes.default.svc.cluster.local"
  ],
  "key":{
    "algo":"rsa",
    "size":2048
  },
  "names":[
    {
      "O":"system:masters"
    }
  ]
}
EOF

cfssl gencert -ca=certs/k8s/k8s-ca.pem \
  -ca-key=certs/k8s/k8s-ca-key.pem \
  -config=certs/ca-config.json \
  -profile=default \
  certs/k8s/kube-apiserver-csr.json | cfssljson -bare certs/k8s/kube-apiserver

#For front-proxy-client certificates
cat <<EOF > certs/k8s/kube-front-proxy-client-csr.json
{
  "CN":"front-proxy-client",
  "key":{
    "algo":"rsa",
    "size":2048
  }
}
EOF

cfssl gencert -ca=certs/k8s/k8s-ca.pem \
  -ca-key=certs/k8s/k8s-ca-key.pem \
  -config=certs/ca-config.json \
  -profile=default \
  certs/k8s/kube-front-proxy-client-csr.json | cfssljson -bare certs/k8s/kube-front-proxy-client

#For controller-manager certificates
cat <<EOF > certs/k8s/kube-controller-manager-csr.json
{
  "CN":"system:kube-controller-manager",
  "key":{
    "algo":"rsa",
    "size":2048
  },
  "names":[
    {
      "O":"system:masters"
    }
  ]
}
EOF

cfssl gencert -ca=certs/k8s/k8s-ca.pem \
  -ca-key=certs/k8s/k8s-ca-key.pem \
  -config=certs/ca-config.json \
  -profile=default \
  certs/k8s/kube-controller-manager-csr.json | cfssljson -bare certs/k8s/kube-controller-manager

#For scheduler certificates
cat <<EOF > certs/k8s/kube-scheduler-csr.json
{
  "CN":"system:kube-scheduler",
  "key":{
    "algo":"rsa",
    "size":2048
  },
  "names":[
    {
      "O":"system:masters"
    }
  ]
}
EOF

cfssl gencert -ca=certs/k8s/k8s-ca.pem \
  -ca-key=certs/k8s/k8s-ca-key.pem \
  -config=certs/ca-config.json \
  -profile=default \
  certs/k8s/kube-scheduler-csr.json | cfssljson -bare certs/k8s/kube-scheduler

#For kubelet master certificates
cat <<EOF > certs/k8s/kubelet-master-csr.json
{
  "CN":"system:node:${KUBE_MASTER_SERV_01}",
  "key":{
    "algo":"rsa",
    "size":2048
  },
  "names":[
    {
      "O":"system:nodes"
    }
  ]
}
EOF

cfssl gencert -ca=certs/k8s/k8s-ca.pem \
  -ca-key=certs/k8s/k8s-ca-key.pem \
  -config=certs/ca-config.json \
  -profile=default \
  certs/k8s/kubelet-master-csr.json | cfssljson -bare certs/k8s/kubelet-master

#For admin certificate
cat <<EOF > certs/k8s/kube-admin-csr.json
{
  "CN":"kube-admin",
  "key":{
    "algo":"rsa",
    "size":2048
  },
  "names":[
    {
      "C":"cn",
      "ST":"DreamState",
      "L":"DreamCity",
      "O":"system:masters",
      "OU":"DreamTeam"
    }
  ]
}
EOF

cfssl gencert -ca=certs/k8s/k8s-ca.pem \
  -ca-key=certs/k8s/k8s-ca-key.pem \
  -config=certs/ca-config.json \
  -profile=default \
  certs/k8s/kube-admin-csr.json | cfssljson -bare certs/k8s/kube-admin

#For service account key
openssl genrsa -out certs/k8s/sa.key 2048
openssl rsa -in certs/k8s/sa.key -pubout -out certs/k8s/sa.pub

#For etcd client
cat <<EOF > certs/k8s/kubelet-etcd-client-csr.json
{
  "CN":"kubelet-nodes",
  "key":{
    "algo":"rsa",
    "size":2048
  }
}
EOF

cfssl gencert -ca=certs/etcd/etcd-ca.pem \
  -ca-key=certs/etcd/etcd-ca-key.pem \
  -config=certs/ca-config.json \
  -profile=default \
  certs/k8s/kubelet-etcd-client-csr.json | cfssljson -bare certs/k8s/kubelet-etcd-client

9. Prepare kubeconfig file for K8s cluster

Prepare kubeconfig file for each component

cd
# For admin
export TOKEN=$(head -c 16 /dev/urandom | od -An -t x | tr -d ' ')
cat <<EOF > certs/k8s/token.csv
${TOKEN},kube-admin,10002,"system:masters"
EOF
kubernetes/server/bin/kubectl config set-cluster kubernetes \
--certificate-authority=certs/k8s/k8s-ca.pem \
--embed-certs=true \
--server=${KUBE_APISERVER} \
--kubeconfig=certs/k8s/admin.conf

kubernetes/server/bin/kubectl config set-credentials kubernetes-admin \
--client-certificate=certs/k8s/kube-admin.pem \
--client-key=certs/k8s/kube-admin-key.pem \
--embed-certs=true \
--kubeconfig=certs/k8s/admin.conf

kubernetes/server/bin/kubectl config set-credentials kubernetes-admin \
--token=${TOKEN} \
--kubeconfig=certs/k8s/admin.conf

kubernetes/server/bin/kubectl config set-context default \
--cluster=kubernetes \
--user=kubernetes-admin \
--kubeconfig=certs/k8s/admin.conf

kubernetes/server/bin/kubectl config use-context default \
--kubeconfig=certs/k8s/admin.conf

# For bootstrap
export BOOTSTRAP_TOKEN=$(head -c 16 /dev/urandom | od -An -t x | tr -d ' ')
cat <<EOF >> certs/k8s/token.csv
${BOOTSTRAP_TOKEN},kubelet-bootstrap,10001,"system:kubelet-bootstrap"
EOF

kubernetes/server/bin/kubectl config set-cluster kubernetes \
--certificate-authority=certs/k8s/k8s-ca.pem \
--embed-certs=true \
--server=${KUBE_APISERVER} \
--kubeconfig=certs/k8s/bootstrap.conf

kubernetes/server/bin/kubectl config set-credentials kubelet-bootstrap \
--token=${BOOTSTRAP_TOKEN} \
--kubeconfig=certs/k8s/bootstrap.conf

kubernetes/server/bin/kubectl  config set-context default \
--cluster=kubernetes \
--user=kubelet-bootstrap \
--kubeconfig=certs/k8s/bootstrap.conf

kubernetes/server/bin/kubectl config use-context default \
--kubeconfig=certs/k8s/bootstrap.conf

# For kubelet master
kubernetes/server/bin/kubectl config set-cluster kubernetes \
--certificate-authority=certs/k8s/k8s-ca.pem \
--embed-certs=true \
--server=${KUBE_APISERVER} \
--kubeconfig=certs/k8s/kubelet-master.conf

kubernetes/server/bin/kubectl config set-credentials system:node:${KUBE_MASTER_SERV_01} \
--client-certificate=certs/k8s/kubelet-master.pem \
--client-key=certs/k8s/kubelet-master-key.pem \
--embed-certs=true \
--kubeconfig=certs/k8s/kubelet-master.conf

kubernetes/server/bin/kubectl config set-context default \
--cluster=kubernetes \
--user=system:node:${KUBE_MASTER_SERV_01} \
--kubeconfig=certs/k8s/kubelet-master.conf

kubernetes/server/bin/kubectl config use-context default \
--kubeconfig=certs/k8s/kubelet-master.conf

#For controller-manager
kubernetes/server/bin/kubectl config set-cluster kubernetes \
--certificate-authority=certs/k8s/k8s-ca.pem \
--embed-certs=true \
--server=${KUBE_APISERVER} \
--kubeconfig=certs/k8s/controller-manager.conf

kubernetes/server/bin/kubectl config set-credentials system:kube-controller-manager \
--client-certificate=certs/k8s/kube-controller-manager.pem \
--client-key=certs/k8s/kube-controller-manager-key.pem \
--embed-certs=true \
--kubeconfig=certs/k8s/controller-manager.conf

kubernetes/server/bin/kubectl config set-context default \
--cluster=kubernetes \
--user=system:kube-controller-manager \
--kubeconfig=certs/k8s/controller-manager.conf

kubernetes/server/bin/kubectl config use-context default \
--kubeconfig=certs/k8s/controller-manager.conf

# For scheduler
kubernetes/server/bin/kubectl config set-cluster kubernetes \
--certificate-authority=certs/k8s/k8s-ca.pem \
--embed-certs=true \
--server=${KUBE_APISERVER} \
--kubeconfig=certs/k8s/scheduler.conf

kubernetes/server/bin/kubectl config set-credentials system:kube-scheduler \
--client-certificate=certs/k8s/kube-scheduler.pem \
--client-key=certs/k8s/kube-scheduler-key.pem \
--embed-certs=true \
--kubeconfig=certs/k8s/scheduler.conf

kubernetes/server/bin/kubectl config set-context default \
--cluster=kubernetes \
--user=system:kube-scheduler \
--kubeconfig=certs/k8s/scheduler.conf

kubernetes/server/bin/kubectl config use-context default \
--kubeconfig=certs/k8s/scheduler.conf

#Check the output in `certs/k8s`
ls certs/k8s
# admin.conf               kube-admin-csr.json          kube-controller-manager-csr.json  kubelet-etcd-client-csr.json  kube-scheduler.csr
# bootstrap.conf           kube-admin-key.pem           kube-controller-manager-key.pem   kubelet-etcd-client-key.pem   kube-scheduler-csr.json
# controller-manager.conf  kube-admin.pem               kube-controller-manager.pem       kubelet-etcd-client.pem       kube-scheduler-key.pem
# k8s-ca.csr               kube-apiserver.csr           kube-front-proxy-client.csr       kubelet-master.conf           kube-scheduler.pem
# k8s-ca-csr.json          kube-apiserver-csr.json      kube-front-proxy-client-csr.json  kubelet-master.csr            sa.key
# k8s-ca-key.pem           kube-apiserver-key.pem       kube-front-proxy-client-key.pem   kubelet-master-csr.json       sa.pub
# k8s-ca.pem               kube-apiserver.pem           kube-front-proxy-client.pem       kubelet-master-key.pem        scheduler.conf
# kube-admin.csr           kube-controller-manager.csr  kubelet-etcd-client.csr           kubelet-master.pem            token.csv

Distribute certificate and kubeconfig file to master and nodes


#For non-master node, without kubeconfig file,only copy bootstrap.conf
for node in ${K8S_NODES} ;do
  echo Copy node certificate file to $node
  ssh ${node} mkdir -p /etc/kubernetes/pki
  for files in \
    certs/etcd/etcd-ca.pem \
    certs/k8s/kubelet-etcd-client*.pem \
    certs/k8s/k8s-ca*.pem ;\
  do
    scp $files ${node}:/etc/kubernetes/pki
  done
  scp certs/k8s/bootstrap.conf ${node}:/etc/kubernetes
done

#For master node,which has --kubeconfig file copied
echo Copy node certificate file to ${KUBE_MASTER_SERV_01}[master]
for files in \
  certs/k8s/*.pem \
  certs/k8s/sa.* \
  certs/etcd/etcd-ca.pem ; \
do
  scp $files ${KUBE_MASTER_SERV_01}:/etc/kubernetes/pki
done
scp certs/k8s/*.conf ${KUBE_MASTER_SERV_01}:/etc/kubernetes
scp certs/k8s/token.csv ${KUBE_MASTER_SERV_01}:/etc/kubernetes

10. Setup `apiserver` `controller-manager` `scheduler` static pods yaml configs

cd
mkdir kubernetes/manifests -p

For apiserver pod

cat > kubernetes/manifests/kube-apiserver.yaml << EOF
apiVersion: v1
kind: Pod
metadata:
  annotations:
    scheduler.alpha.kubernetes.io/critical-pod: ""
  labels:
    component: kube-apiserver
    tier: control-plane
  name: kube-apiserver
  namespace: kube-system
spec:
  hostNetwork: true
  containers :
  - name: kube-apiserver
    image: ${PRIVATE_REGISTRY}/kube-apiserver:${K8S_BASE_VER}
    command:
      - kube-apiserver
      - --v=0
      - --logtostderr=true
      - --allow-privileged=true
      - --bind-address=0.0.0.0
      - --secure-port=${KUBE_APISERVER_PORT}
      - --insecure-port=0
      - --advertise-address=${KUBE_APISERVER_IP_01}
      - --service-cluster-ip-range=${KUBE_CLUSTER_SERVICE_CIDR}
      - --etcd-servers=https://${ETCD1_IP}:${ETCD_CLIENT_PORT},https://${ETCD2_IP}:${ETCD_CLIENT_PORT},https://${ETCD3_IP}:${ETCD_CLIENT_PORT}
      - --etcd-cafile=/etc/kubernetes/pki/etcd-ca.pem
      - --etcd-certfile=/etc/kubernetes/pki/kubelet-etcd-client.pem
      - --etcd-keyfile=/etc/kubernetes/pki/kubelet-etcd-client-key.pem
      - --client-ca-file=/etc/kubernetes/pki/k8s-ca.pem
      - --tls-cert-file=/etc/kubernetes/pki/kube-apiserver.pem
      - --tls-private-key-file=/etc/kubernetes/pki/kube-apiserver-key.pem
      - --kubelet-client-certificate=/etc/kubernetes/pki/kube-apiserver.pem
      - --kubelet-client-key=/etc/kubernetes/pki/kube-apiserver-key.pem
      - --service-account-key-file=/etc/kubernetes/pki/sa.pub
      - --token-auth-file=/etc/kubernetes/token.csv
      - --kubelet-preferred-address-types=InternalIP,ExternalIP,Hostname
      - --admission-control=Initializers,NamespaceLifecycle,LimitRanger,ServiceAccount,DefaultStorageClass,DefaultTolerationSeconds,NodeRestriction,ResourceQuota
      - --authorization-mode=Node,RBAC
      - --enable-bootstrap-token-auth=true
      - --requestheader-client-ca-file=/etc/kubernetes/pki/k8s-ca.pem
      - --proxy-client-cert-file=/etc/kubernetes/pki/kube-front-proxy-client.pem
      - --proxy-client-key-file=/etc/kubernetes/pki/kube-front-proxy-client-key.pem
      #- --requestheader-allowed-names=aggregator
      - --requestheader-group-headers=X-Remote-Group
      - --requestheader-extra-headers-prefix=X-Remote-Extra-
      - --requestheader-username-headers=X-Remote-User
      - --event-ttl=1h
    livenessProbe:
      failureThreshold: 8
      httpGet:
        host: 127.0.0.1
        path: /healthz
        port: ${KUBE_APISERVER_PORT}
        scheme: HTTPS
      initialDelaySeconds: 15
      timeoutSeconds: 15
    resources:
      requests:
        cpu: 250m
    volumeMounts:
    - mountPath: /var/log/kubernetes
      name: k8s-audit-log
    - mountPath: /etc/kubernetes/pki
      name: k8s-certs
      readOnly: true
    - mountPath: /etc/kubernetes/token.csv
      name: token-csv
      readOnly: true
  volumes:
  - hostPath:
      path: /var/log/kubernetes
      type: DirectoryOrCreate
    name: k8s-audit-log
  - hostPath:
      path: /etc/kubernetes/pki
      type: DirectoryOrCreate
    name: k8s-certs
  - hostPath:
      path: /etc/kubernetes/token.csv
      type: FileOrCreate
    name: token-csv
EOF

For controller manager

cat > kubernetes/manifests/kube-controller-manager.yaml << EOF
apiVersion: v1
kind: Pod
metadata:
  annotations:
    scheduler.alpha.kubernetes.io/critical-pod: ""
  labels:
    component: kube-controller-manager
    tier: control-plane
  name: kube-controller-manager
  namespace: kube-system
spec:
  hostNetwork: true
  containers:
  - name: kube-controller-manager
    image: ${PRIVATE_REGISTRY}/kube-controller-manager:${K8S_BASE_VER}
    command:
      - kube-controller-manager
      - --v=0
      - --logtostderr=true
      - --address=127.0.0.1
      - --root-ca-file=/etc/kubernetes/pki/k8s-ca.pem
      - --cluster-signing-cert-file=/etc/kubernetes/pki/k8s-ca.pem
      - --cluster-signing-key-file=/etc/kubernetes/pki/k8s-ca-key.pem
      - --service-account-private-key-file=/etc/kubernetes/pki/sa.key
      - --kubeconfig=/etc/kubernetes/controller-manager.conf
      - --leader-elect=true
      - --use-service-account-credentials=true
      - --node-monitor-grace-period=40s
      - --node-monitor-period=5s
      - --pod-eviction-timeout=2m0s
      - --controllers=*,bootstrapsigner,tokencleaner
      - --allocate-node-cidrs=true
      - --cluster-cidr=${KUBE_CLUSTER_POD_CIDR}
      - --node-cidr-mask-size=24
    livenessProbe:
      failureThreshold: 8
      httpGet:
        host: 127.0.0.1
        path: /healthz
        port: 10252
        scheme: HTTP
      initialDelaySeconds: 15
      timeoutSeconds: 15
    resources:
      requests:
        cpu: 200m
    volumeMounts:
    - mountPath: /etc/kubernetes/pki
      name: k8s-certs
      readOnly: true
    - mountPath: /etc/ssl/certs
      name: ca-certs
      readOnly: true
    - mountPath: /etc/kubernetes/controller-manager.conf
      name: kubeconfig
      readOnly: true
    - mountPath: /usr/libexec/kubernetes/kubelet-plugins/volume/exec
      name: flexvolume-dir
  volumes:
  - hostPath:
      path: /etc/kubernetes/pki
      type: DirectoryOrCreate
    name: k8s-certs
  - hostPath:
      path: /etc/ssl/certs
      type: DirectoryOrCreate
    name: ca-certs
  - hostPath:
      path: /etc/kubernetes/controller-manager.conf
      type: FileOrCreate
    name: kubeconfig
  - hostPath:
      path: /usr/libexec/kubernetes/kubelet-plugins/volume/exec
      type: DirectoryOrCreate
    name: flexvolume-dir
EOF

For scheduler

cat > kubernetes/manifests/kube-scheduler.yaml << EOF
apiVersion: v1
kind: Pod
metadata:
  annotations:
    scheduler.alpha.kubernetes.io/critical-pod: ""
  labels:
    component: kube-scheduler
    tier: control-plane
  name: kube-scheduler
  namespace: kube-system
spec:
  hostNetwork: true
  containers:
  - name: kube-scheduler
    image: ${PRIVATE_REGISTRY}/kube-scheduler:${K8S_BASE_VER}
    command:
      - kube-scheduler
      - --v=0
      - --logtostderr=true
      - --address=127.0.0.1
      - --leader-elect=true
      - --kubeconfig=/etc/kubernetes/scheduler.conf
    livenessProbe:
      failureThreshold: 8
      httpGet:
        host: 127.0.0.1
        path: /healthz
        port: 10251
        scheme: HTTP
      initialDelaySeconds: 15
      timeoutSeconds: 15
    resources:
      requests:
        cpu: 100m
    volumeMounts:
    - mountPath: /etc/kubernetes/pki
      name: k8s-certs
      readOnly: true
    - mountPath: /etc/kubernetes/scheduler.conf
      name: kubeconfig
      readOnly: true
  volumes:
  - hostPath:
      path: /etc/kubernetes/pki
      type: DirectoryOrCreate
    name: k8s-certs
  - hostPath:
      path: /etc/kubernetes/scheduler.conf
      type: FileOrCreate
    name: kubeconfig
EOF

Distribute to master node

ssh ${KUBE_MASTER_SERV_01} mkdir -p /etc/kubernetes/manifests
scp kubernetes/manifests/*.yaml ${KUBE_MASTER_SERV_01}:/etc/kubernetes/manifests

11. Setup and boot the `kubelet` & cluster with systemd service

cd
mkdir kubernetes/systemd/ -p

cat > kubernetes/systemd/kubelet.service << EOF
[Unit]
Description=kubelet: The Kubernetes Node Agent
Documentation=http://kubernetes.io/docs/

[Service]
ExecStart=/usr/local/bin/kubelet
Restart=on-failure
StartLimitInterval=0
RestartSec=10

[Install]
WantedBy=multi-user.target
EOF

cat > kubernetes/systemd/10-kubelet.conf << EOF
[Service]
Environment="KUBELET_KUBECONFIG_ARGS=--address=0.0.0.0 --port=10250 --kubeconfig=/etc/kubernetes/kubelet-master.conf --bootstrap-kubeconfig=/etc/kubernetes/bootstrap.conf"
Environment="KUBE_LOGTOSTDERR=--logtostderr=true --v=0"
Environment="KUBELET_SYSTEM_PODS_ARGS=--pod-manifest-path=/etc/kubernetes/manifests --allow-privileged=true --anonymous-auth=false"
Environment="KUBELET_POD_CONTAINER=--pod-infra-container-image=${PRIVATE_REGISTRY}/${K8S_PAUSE_IMG_NAME}:${K8S_PAUSE_VER}"
Environment="KUBELET_NETWORK_ARGS=--network-plugin=cni --cni-conf-dir=/etc/cni/net.d --cni-bin-dir=/opt/cni/bin"
Environment="KUBELET_DNS_ARGS=--cluster-dns=${CLUSTER_DNS_IP} --cluster-domain=cluster.local"
Environment="KUBELET_AUTHZ_ARGS=--authorization-mode=Webhook --client-ca-file=/etc/kubernetes/pki/k8s-ca.pem"
Environment="KUBELET_CADVISOR_ARGS=--cadvisor-port=0"
Environment="KUBELET_CERTIFICATE_ARGS=--rotate-certificates=true --cert-dir=/var/lib/kubelet/pki"
Environment="KUBELET_EXTRA_ARGS=--fail-swap-on=false --serialize-image-pulls=false"
Environment="KUBE_NODE_LABEL=--node-labels=node-role.kubernetes.io/master=true"
#kubelet cgroup-driver MUST be consistence with docker daemon
Environment="KUBELET_CGROUP=--cgroup-driver=systemd"
ExecStart=
ExecStart=/usr/local/bin/kubelet \$KUBELET_KUBECONFIG_ARGS \$KUBE_LOGTOSTDERR \$KUBELET_POD_CONTAINER \$KUBELET_SYSTEM_PODS_ARGS \$KUBELET_NETWORK_ARGS \$KUBELET_DNS_ARGS \$KUBELET_AUTHZ_ARGS \$KUBELET_EXTRA_ARGS \$KUBE_NODE_LABEL \$KUBELET_CGROUP
EOF

for node in ${K8S_NODES} ;do
  echo Prepare for $node
  ssh ${node} mkdir -p /etc/systemd/system/kubelet.service.d
  scp kubernetes/systemd/10-kubelet.conf ${node}:/etc/systemd/system/kubelet.service.d/
  scp kubernetes/systemd/kubelet.service ${node}:/lib/systemd/system/kubelet.service
  ssh ${node} "systemctl stop kubelet && systemctl disable kubelet"
  ssh ${node} "systemctl enable kubelet && systemctl start kubelet"
done

12. Setup admin cli environment and check cluster status

Setup the admin cli environment with amdin.con file

ssh ${KUBE_MASTER_SERV_01} mkdir ~/.kube
ssh ${KUBE_MASTER_SERV_01} cp /etc/kubernetes/admin.conf ~/.kube/config
ssh ${KUBE_MASTER_SERV_01} kubectl get cs
ssh ${KUBE_MASTER_SERV_01} kubectl get node
ssh ${KUBE_MASTER_SERV_01} kubectl -n kube-system get po

The run out result should be like this:

ssh ${KUBE_MASTER_SERV_01} kubectl get cs
# NAME                 STATUS    MESSAGE              ERROR
# controller-manager   Healthy   ok
# scheduler            Healthy   ok
# etcd-2               Healthy   {"health": "true"}
# etcd-0               Healthy   {"health": "true"}
# etcd-1               Healthy   {"health": "true"}
ssh ${KUBE_MASTER_SERV_01} kubectl get node
# NAME      STATUS     ROLES     AGE       VERSION
# jin       NotReady   master    1m        v1.9.0
ssh ${KUBE_MASTER_SERV_01} kubectl -n kube-system get po
# NAME                          READY     STATUS    RESTARTS   AGE
# kube-apiserver-jin            1/1       Running   0          40s
# kube-controller-manager-jin   1/1       Running   0          33s
# kube-scheduler-jin            1/1       Running   0          38s

13. Authorize other K8s nodes joining the cluster

Add TLS Bootstrapping ClusterRoleBinding to cluster

ssh ${KUBE_MASTER_SERV_01} kubectl create \
  clusterrolebinding kubelet-bootstrap \
  --clusterrole=system:node-bootstrapper \
  --user=kubelet-bootstrap

Check pending node certificate CSR requests

ssh ${KUBE_MASTER_SERV_01} kubectl get csr
# NAME                                                   AGE       REQUESTOR           CONDITION
# node-csr-gO_HGaj_cJdNzjx3AxjmMtKBNfiBRUdIfBn0HdDyWtM   8s        kubelet-bootstrap   Pending
# node-csr-nrYBLZlNzplcs5pW81BvKTzzenqzXCSQ1IddYFs0BLY   8s        kubelet-bootstrap   Pending
# node-csr-t6TpFDn-uaou9RWRBs0cAXd9V2RIDgretORPWkM0--E   7s        kubelet-bootstrap   Pending

Authorize node CSR requests

ssh ${KUBE_MASTER_SERV_01} "kubectl get csr | awk '/Pending/ {print \$1}' | xargs kubectl certificate approve"
# certificatesigningrequest "node-csr-gO_HGaj_cJdNzjx3AxjmMtKBNfiBRUdIfBn0HdDyWtM" approved
# certificatesigningrequest "node-csr-nrYBLZlNzplcs5pW81BvKTzzenqzXCSQ1IddYFs0BLY" approved
# certificatesigningrequest "node-csr-t6TpFDn-uaou9RWRBs0cAXd9V2RIDgretORPWkM0--E" approved

ssh ${KUBE_MASTER_SERV_01} kubectl get nodes
# NAME      STATUS     ROLES     AGE       VERSION
# huo       NotReady   master    34s       v1.9.0
# jin       NotReady   master    3m        v1.9.0
# mu        NotReady   master    33s       v1.9.0
# shui      NotReady   master    34s       v1.9.0

14. Setup `kube-proxy` addon

Which shall be deployed ahead of Calico ,otherwise the Calico components would stuck in creating container status.

cd
mkdir -p kubernetes/addons

#Generate kube proxy certificate
cat <<EOF > certs/k8s/kube-proxy-csr.json
{
  "CN":"system:kube-proxy",
  "key":{
    "algo":"rsa",
    "size":2048
  },
  "names":[
    {
      "O":"system:kube-proxy"
    }
  ]
}
EOF

cfssl gencert -ca=certs/k8s/k8s-ca.pem \
  -ca-key=certs/k8s/k8s-ca-key.pem \
  -config=certs/ca-config.json \
  -profile=default \
  certs/k8s/kube-proxy-csr.json | cfssljson -bare certs/k8s/kube-proxy

#Generate kubeconfig for proxy
kubernetes/server/bin/kubectl config set-cluster kubernetes \
--certificate-authority=certs/k8s/k8s-ca.pem \
--embed-certs=true \
--server=${KUBE_APISERVER} \
--kubeconfig=certs/k8s/kube-proxy.conf

kubernetes/server/bin/kubectl config set-credentials system:kube-proxy \
--client-certificate=certs/k8s/kube-scheduler.pem \
--client-key=certs/k8s/kube-scheduler-key.pem \
--embed-certs=true \
--kubeconfig=certs/k8s/kube-proxy.conf

kubernetes/server/bin/kubectl config set-context default \
--cluster=kubernetes \
--user=system:kube-proxy \
--kubeconfig=certs/k8s/kube-proxy.conf

kubernetes/server/bin/kubectl config use-context default \
--kubeconfig=certs/k8s/kube-proxy.conf

#Generate kube-proxy yaml
cat > kubernetes/addons/kube-proxy.yml <<EOF
apiVersion: v1
kind: ServiceAccount
metadata:
  name: kube-proxy
  labels:
    k8s-app: kube-proxy
    kubernetes.io/cluster-service: "true"
    addonmanager.kubernetes.io/mode: Reconcile
  namespace: kube-system
---
apiVersion: extensions/v1beta1
kind: DaemonSet
metadata:
  name: kube-proxy
  labels:
    k8s-app: kube-proxy
    kubernetes.io/cluster-service: "true"
    addonmanager.kubernetes.io/mode: Reconcile
  namespace: kube-system
spec:
  selector:
    matchLabels:
      k8s-app: kube-proxy
  templateGeneration: 1
  updateStrategy:
    rollingUpdate:
      maxUnavailable: 1
    type: RollingUpdate
  template:
    metadata:
      labels:
        k8s-app: kube-proxy
      annotations:
        scheduler.alpha.kubernetes.io/critical-pod: ''
    spec:
      serviceAccountName: kube-proxy
      hostNetwork: true
      containers:
      - name: kube-proxy
        image: ${PRIVATE_REGISTRY}/${K8S_PROXY_IMG_NAME}:${K8S_PROXY_VER}
        command:
        - kube-proxy
        - --v=0
        - --logtostderr=true
        - --kubeconfig=/run/kube-proxy.conf
        - --cluster-cidr=${KUBE_CLUSTER_POD_CIDR}
        - --proxy-mode=iptables
        imagePullPolicy: IfNotPresent
        securityContext:
          privileged: true
        volumeMounts:
        - mountPath: /run/kube-proxy.conf
          name: kubeconfig
          readOnly: true
        - mountPath: /etc/kubernetes/pki
          name: k8s-certs
          readOnly: true
      dnsPolicy: ClusterFirst
      restartPolicy: Always
      terminationGracePeriodSeconds: 30
      volumes:
      - hostPath:
          path: /etc/kubernetes/kube-proxy.conf
          type: FileOrCreate
        name: kubeconfig
      - hostPath:
          path: /etc/kubernetes/pki
          type: DirectoryOrCreate
        name: k8s-certs
EOF

#Distribute certs and config file to nodes
for node in ${K8S_NODES} ; do
  scp certs/k8s/kube-proxy*.pem ${node}:/etc/kubernetes/pki
  scp certs/k8s/kube-proxy.conf ${node}:/etc/kubernetes/
done
ssh ${KUBE_MASTER_SERV_01} "mkdir -p /etc/kubernetes/addons"
scp kubernetes/addons/kube-proxy.yml ${KUBE_MASTER_SERV_01}:/etc/kubernetes/addons

#Apply yaml to cluster
ssh ${KUBE_MASTER_SERV_01} kubectl apply -f /etc/kubernetes/addons/kube-proxy.yml

#Check status
ssh ${KUBE_MASTER_SERV_01} kubectl -n kube-system get po -l k8s-app=kube-proxy
# NAME               READY     STATUS    RESTARTS   AGE
# kube-proxy-drfbj   1/1       Running   0          45s
# kube-proxy-lx6sx   1/1       Running   0          45s
# kube-proxy-m44b8   1/1       Running   0          45s
# kube-proxy-nb2sw   1/1       Running   0          44s

15. `Calico` Standard Hosted Install

Generate certificate for calico-etcd-client

cd
mkdir certs/calico -p
cat <<EOF > certs/calico/calico-etcd-client-csr.json
{
  "CN":"calico-nodes",
  "key":{
    "algo":"rsa",
    "size":2048
  }
}
EOF

cfssl gencert -ca=certs/etcd/etcd-ca.pem \
  -ca-key=certs/etcd/etcd-ca-key.pem \
  -config=certs/ca-config.json \
  -profile=default \
  certs/calico/calico-etcd-client-csr.json | cfssljson -bare certs/calico/calico-etcd-client

Modify preset yaml pattern
Setup Calico network in IPIP OFF mode,the pattern is fetched from Standard Hosted Install - calico.yaml

export ETCD_CA_BASE64=`cat ${HOME}/certs/etcd/etcd-ca.pem|base64 -w 0`
export ETCD_CERT_BASE64=`cat ${HOME}/certs/calico/calico-etcd-client.pem|base64 -w 0`
export ETCD_KEY_BASE64=`cat ${HOME}/certs/calico/calico-etcd-client-key.pem|base64 -w 0`
sed "s#http://127.0.0.1:2379#$ETCD_ENDPOINTS#" \
all-in-one/configs/calico-deploy.yaml.conf |\
sed 's/etcd_ca: ""   #/etcd_ca: /g' |\
sed 's/etcd_cert: "" #/etcd_cert: /g' |\
sed 's/etcd_key: ""  #/etcd_key: /g' |\
sed "s/  # etcd-key: null/  etcd-key: $ETCD_KEY_BASE64/" |\
sed "s/  # etcd-cert: null/  etcd-cert: $ETCD_CERT_BASE64/" |\
sed "s/  # etcd-ca: null/  etcd-ca: $ETCD_CA_BASE64/" |\
sed "s#quay.io/calico/${CALICO_NODE_IMAGE_NAME}:${CALICO_NODE_VER}#${PRIVATE_REGISTRY}/calico/${CALICO_NODE_IMAGE_NAME}:${CALICO_NODE_VER}#g" |\
sed "s#192.168.0.0/16#${KUBE_CLUSTER_POD_CIDR}#" |\
sed "s#quay.io/calico/${CALICO_CNI_IMAGE_NAME}:${CALICO_CNI_VER}#${PRIVATE_REGISTRY}/calico/${CALICO_CNI_IMAGE_NAME}:${CALICO_CNI_VER}#g" |\
sed "s#quay.io/calico/${CALICO_CONTROLLER_IMG_NAME}:${CALICO_CONTROLLER_VER}#${PRIVATE_REGISTRY}/calico/${CALICO_CONTROLLER_IMG_NAME}:${CALICO_CONTROLLER_VER}#g" |\
sed "/CALICO_IPV4POOL_IPIP/{n;d}" |\
sed '/CALICO_IPV4POOL_IPIP/a\              value: "off"' > \
all-in-one/configs/calico-deploy.yaml

#Distribute config file to master node
scp all-in-one/configs/calico-deploy.yaml ${KUBE_MASTER_SERV_01}:/etc/kubernetes/addons
scp all-in-one/configs/calico-rbac.yaml ${KUBE_MASTER_SERV_01}:/etc/kubernetes/addons
ssh ${KUBE_MASTER_SERV_01} kubectl apply -f /etc/kubernetes/addons/calico-rbac.yaml
ssh ${KUBE_MASTER_SERV_01} kubectl apply -f /etc/kubernetes/addons/calico-deploy.yaml

#Check the calico pod status
ssh ${KUBE_MASTER_SERV_01} kubectl -n kube-system get po
# NAME                                       READY     STATUS    RESTARTS   AGE
# calico-kube-controllers-54747bbfbf-rx48m   1/1       Running   0          2m
# calico-node-2h6r8                          2/2       Running   0          2m
# calico-node-gfwzf                          2/2       Running   0          2m
# calico-node-gvr7v                          2/2       Running   0          2m
# calico-node-lf4zp                          2/2       Running   0          2m
# kube-apiserver-jin                         1/1       Running   0          16m
# kube-controller-manager-jin                1/1       Running   0          16m
# kube-proxy-drfbj                           1/1       Running   0          12m
# kube-proxy-lx6sx                           1/1       Running   0          12m
# kube-proxy-m44b8                           1/1       Running   0          12m
# kube-proxy-nb2sw                           1/1       Running   0          12m
# kube-scheduler-jin                         1/1       Running   0          16m

16. Setup `kube-dns` addon

cat > kubernetes/addons/kube-dns.yml << EOF
apiVersion: v1
kind: ServiceAccount
metadata:
  name: kube-dns
  labels:
    k8s-app: kube-dns
    kubernetes.io/cluster-service: "true"
    addonmanager.kubernetes.io/mode: Reconcile
  namespace: kube-system
---
apiVersion: v1
kind: Service
metadata:
  name: kube-dns
  namespace: kube-system
  labels:
    k8s-app: kube-dns
    kubernetes.io/cluster-service: "true"
    addonmanager.kubernetes.io/mode: Reconcile
spec:
  selector:
    k8s-app: kube-dns
  clusterIP: ${CLUSTER_DNS_IP}
  ports:
  - name: dns
    port: 53
    protocol: UDP
  - name: dns-tcp
    port: 53
    protocol: TCP
---
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: kube-dns
  namespace: kube-system
  labels:
    k8s-app: kube-dns
    kubernetes.io/cluster-service: "true"
    addonmanager.kubernetes.io/mode: Reconcile
spec:
  strategy:
    rollingUpdate:
      maxSurge: 10%
      maxUnavailable: 0
  selector:
    matchLabels:
      k8s-app: kube-dns
  template:
    metadata:
      labels:
        k8s-app: kube-dns
      annotations:
        scheduler.alpha.kubernetes.io/critical-pod: ''
    spec:
      dnsPolicy: Default
      serviceAccountName: kube-dns
      tolerations:
      - key: "CriticalAddonsOnly"
        operator: "Exists"
      - key: node-role.kubernetes.io/master
        effect: NoSchedule
      volumes:
      - name: kube-dns-config
        configMap:
          name: kube-dns
          optional: true
      containers:
      - name: kubedns
        image: ${PRIVATE_REGISTRY}/${K8S_KUBE_DNS_IMG_NAME}:${K8S_DNS_VER}
        resources:
          limits:
            memory: 170Mi
          requests:
            cpu: 100m
            memory: 70Mi
        livenessProbe:
          httpGet:
            path: /healthcheck/kubedns
            port: 10054
            scheme: HTTP
          initialDelaySeconds: 60
          timeoutSeconds: 5
          successThreshold: 1
          failureThreshold: 5
        readinessProbe:
          httpGet:
            path: /readiness
            port: 8081
            scheme: HTTP
          initialDelaySeconds: 3
          timeoutSeconds: 5
        args:
        - "--domain=cluster.local"
        - --dns-port=10053
        - --v=2
        env:
        - name: PROMETHEUS_PORT
          value: "10055"
        ports:
        - containerPort: 10053
          name: dns-local
          protocol: UDP
        - containerPort: 10053
          name: dns-tcp-local
          protocol: TCP
        - containerPort: 10055
          name: metrics
          protocol: TCP
        volumeMounts:
        - name: kube-dns-config
          mountPath: /kube-dns-config
      - name: dnsmasq
        image: ${PRIVATE_REGISTRY}/${K8S_DNSMASQ_IMG_NAME}:${K8S_DNS_VER}
        livenessProbe:
          httpGet:
            path: /healthcheck/dnsmasq
            port: 10054
            scheme: HTTP
          initialDelaySeconds: 60
          timeoutSeconds: 5
          successThreshold: 1
          failureThreshold: 5
        args:
        - "-v=2"
        - "-logtostderr"
        - "-configDir=/etc/k8s/dns/dnsmasq-nanny"
        - "-restartDnsmasq=true"
        - "--"
        - "-k"
        - "--cache-size=1000"
        - "--log-facility=-"
        - "--server=/cluster.local/127.0.0.1#10053"
        - "--server=/in-addr.arpa/127.0.0.1#10053"
        - "--server=/ip6.arpa/127.0.0.1#10053"
        ports:
        - containerPort: 53
          name: dns
          protocol: UDP
        - containerPort: 53
          name: dns-tcp
          protocol: TCP
        resources:
          requests:
            cpu: 150m
            memory: 20Mi
        volumeMounts:
        - name: kube-dns-config
          mountPath: /etc/k8s/dns/dnsmasq-nanny
      - name: sidecar
        image: ${PRIVATE_REGISTRY}/${K8S_SIDECAR_IMG_NAME}:${K8S_DNS_VER}
        livenessProbe:
          httpGet:
            path: /metrics
            port: 10054
            scheme: HTTP
          initialDelaySeconds: 60
          timeoutSeconds: 5
          successThreshold: 1
          failureThreshold: 5
        args:
        - "--v=2"
        - "--logtostderr"
        - "--probe=kubedns,127.0.0.1:10053,kubernetes.default.svc.cluster.local,5,A"
        - "--probe=dnsmasq,127.0.0.1:53,kubernetes.default.svc.cluster.local,5,A"
        ports:
        - containerPort: 10054
          name: metrics
          protocol: TCP
        resources:
          requests:
            memory: 20Mi
            cpu: 10m
EOF

#Distribute certs and config file to nodes
ssh ${KUBE_MASTER_SERV_01} mkdir -p /etc/kubernetes/addons
scp kubernetes/addons/kube-dns.yml ${KUBE_MASTER_SERV_01}:/etc/kubernetes/addons

#Apply yaml to cluster
ssh ${KUBE_MASTER_SERV_01} kubectl apply -f /etc/kubernetes/addons/kube-dns.yml

#Check DNS status with cluster service IP
ssh ${KUBE_MASTER_SERV_01} kubectl -n kube-system get po -l k8s-app=kube-dns -o wide
# NAME                       READY     STATUS    RESTARTS   AGE       IP             NODE
# kube-dns-c84c85bb4-svv9v   3/3       Running   0          2m        172.17.95.65   mu

17. Check the whole cluster status

That's all for the cluster deployments, now you can check the overall status in the cluster

ssh ${KUBE_MASTER_SERV_01} kubectl -n kube-system get all
# NAME             DESIRED   CURRENT   READY     UP-TO-DATE   AVAILABLE   NODE SELECTOR   AGE
# ds/calico-node   4         4         4         4            4           <none>          5m
# ds/kube-proxy    4         4         4         4            4           <none>          16m
#
# NAME                              DESIRED   CURRENT   UP-TO-DATE   AVAILABLE   AGE
# deploy/calico-kube-controllers    1         1         1            1           5m
# deploy/calico-policy-controller   0         0         0            0           5m
# deploy/kube-dns                   1         1         1            1           1m
#
# NAME                                     DESIRED   CURRENT   READY     AGE
# rs/calico-kube-controllers-54747bbfbf    1         1         1         5m
# rs/calico-policy-controller-6d964cc58f   0         0         0         5m
# rs/kube-dns-c84c85bb4                    1         1         1         1m
#
# NAME             DESIRED   CURRENT   READY     UP-TO-DATE   AVAILABLE   NODE SELECTOR   AGE
# ds/calico-node   4         4         4         4            4           <none>          5m
# ds/kube-proxy    4         4         4         4            4           <none>          16m
#
# NAME                              DESIRED   CURRENT   UP-TO-DATE   AVAILABLE   AGE
# deploy/calico-kube-controllers    1         1         1            1           5m
# deploy/calico-policy-controller   0         0         0            0           5m
# deploy/kube-dns                   1         1         1            1           1m
#
# NAME                                     DESIRED   CURRENT   READY     AGE
# rs/calico-kube-controllers-54747bbfbf    1         1         1         5m
# rs/calico-policy-controller-6d964cc58f   0         0         0         5m
# rs/kube-dns-c84c85bb4                    1         1         1         1m
#
# NAME                                          READY     STATUS    RESTARTS   AGE
# po/calico-kube-controllers-54747bbfbf-rx48m   1/1       Running   0          5m
# po/calico-node-2h6r8                          2/2       Running   0          5m
# po/calico-node-gfwzf                          2/2       Running   0          5m
# po/calico-node-gvr7v                          2/2       Running   0          5m
# po/calico-node-lf4zp                          2/2       Running   0          5m
# po/kube-apiserver-jin                         1/1       Running   0          19m
# po/kube-controller-manager-jin                1/1       Running   0          19m
# po/kube-dns-c84c85bb4-svv9v                   3/3       Running   0          1m
# po/kube-proxy-drfbj                           1/1       Running   0          16m
# po/kube-proxy-lx6sx                           1/1       Running   0          16m
# po/kube-proxy-m44b8                           1/1       Running   0          16m
# po/kube-proxy-nb2sw                           1/1       Running   0          15m
# po/kube-scheduler-jin                         1/1       Running   0          19m
#
# NAME           TYPE        CLUSTER-IP    EXTERNAL-IP   PORT(S)         AGE
# svc/kube-dns   ClusterIP   172.16.0.10   <none>        53/UDP,53/TCP   1m

References

#calico #k8s #cn

6 years ago in #kubernetes by highland0971 (25)

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Deploy kubernetes & Calico Network in air-gapped environment within 20 minutes

1. Pre-defined environment vars

2. Download required images and binaries for K8S,Etcd,Docker,Calico,cfssl

The following scripts executed on INSTALLATION_BASE

3. Prepare kubelet runtime environment

4. Install Docker

5. Setup private registry service

6. Distribute K8s binaries and images to nodes

7. Setup etcd daemon

8. Prepare certificate for K8s

9. Prepare kubeconfig file for K8s cluster

10. Setup apiserver controller-manager scheduler static pods yaml configs

11. Setup and boot the kubelet & cluster with systemd service