k8s-node.sh

# HOSTNAME=${1:-k8smaster}  # If variable not set or null, set it to default.
DNS_SERVER=8.8.8.8
PROXY=${2:-http://your.proxyip}

# hostname $HOSTNAME
# hostname -F /etc/hostname

sudo yum remove -y docker \
                  docker-client \
                  docker-client-latest \
                  docker-common \
                  docker-latest \
                  docker-latest-logrotate \
                  docker-logrotate \
                  docker-selinux \
                  docker-engine-selinux \
                  docker-engine
                  
sudo yum install -y yum-utils \
  device-mapper-persistent-data \
  lvm2
  
sudo yum-config-manager \
    --add-repo \
    http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
sudo yum-config-manager --enable docker-ce-edge
sudo yum install -y docker-ce

sudo systemctl enable docker
sudo systemctl start docker

cat <<EOF > /etc/yum.repos.d/kubernetes.repo
[kubernetes]
name=Kubernetes
baseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64
enabled=1
gpgcheck=0
repo_gpgcheck=0
gpgkey=https://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg
        https://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg
EOF

setenforce 0
yum install -y kubelet kubeadm kubectl

# docker info | grep -i cgroup
# cat /etc/systemd/system/kubelet.service.d/10-kubeadm.conf

sed -i "s/cgroup-driver=systemd/cgroup-driver=cgroupfs/g" /etc/systemd/system/kubelet.service.d/10-kubeadm.conf

systemctl daemon-reload
systemctl enable kubelet
systemctl restart kubelet


cat <<EOF >  /etc/sysctl.d/k8s.conf
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
EOF
sysctl --system


sed -i "s/nameserver.*/nameserver $DNS_SERVER/" /etc/resolv.conf

cat <<EOF >  /etc/docker/daemon.json
{
  "registry-mirrors": ["https://registry.docker-cn.com"]
}
EOF

mkdir -p /etc/systemd/system/docker.service.d/

cat <<EOF >  /etc/systemd/system/docker.service.d/http-proxy.conf
[Service]
Environment="HTTPS_PROXY=http://your.proxyip"
Environment="NO_PROXY=localhost,127.0.0.1,registry.docker-cn.com"
EOF

systemctl daemon-reload
systemctl restart docker

swapoff -a

export MY_IP=`{ip addr | grep 'state UP' -A2 | tail -n1 | awk '{print $2}' | cut -f1  -d'/'}`
export https_proxy=$PROXY
export http_proxy=$PROXY
export no_proxy="localhost,$MY_IP"

kubeadm reset -f
kubeadm init --pod-network-cidr=10.244.0.0/16 --ignore-preflight-errors=all
unset https_proxy


mkdir -p $HOME/.kube
sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
sudo chown $(id -u):$(id -g) $HOME/.kube/config