Kubernetes
--- All Node ---
# cat <<EOF >> /etc/hosts
192.168.1.191 master1
192.168.1.218 worker1
192.168.1.223 worker2
EOF
# hostnamectl set-hostname master
# curl https://download.docker.com/linux/centos/docker-ce.repo -o /etc/yum.repos.d/docker-ce.repo
# sed -i -e "s/enabled=1/enabled=0/g" /etc/yum.repos.d/docker-ce.repo
# yum --enablerepo=docker-ce-stable -y install docker-ce-19.03.15-3.el7
# mkdir /etc/docker
# cat <<EOF | sudo tee /etc/docker/daemon.json
{
"exec-opts": ["native.cgroupdriver=systemd"],
"log-driver": "json-file",
"log-opts": {
"max-size": "100m"
},
"storage-driver": "overlay2"
}
EOF
# systemctl enable --now docker
# systemctl daemon-reload
# systemctl restart docker
# systemctl disable --now firewalld
# setenforce 0
# sed -i 's/^SELINUX=enforcing$/SELINUX=disabled/' /etc/selinux/config
# swapoff -a
# sed -i '/ swap / s/^/#/' /etc/fstab
# cat <<EOF > /etc/sysctl.d/k8s.conf
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
EOF
# sysctl --system
# reboot
# cat <<'EOF' > /etc/yum.repos.d/kubernetes.repo
[kubernetes]
name=Kubernetes
baseurl=https://packages.cloud.google.com/yum/repos/kubernetes-el7-$basearch
enabled=1
gpgcheck=0
repo_gpgcheck=0
gpgkey=https://packages.cloud.google.com/yum/doc/yum-key.gpg https://packages.cloud.google.com/yum/doc/rpm-package-key.gpg
EOF
# yum -y install kubeadm-1.19.16-0 kubelet-1.19.16-0 kubectl-1.19.16-0 --disableexcludes=kubernetes
# systemctl enable kubelet
- master1 복제 > worker1 / worker2
- CPU 1, RAM 1024
