![\"\"](\"https:\/\/cdn.manvscloud.com\/wp-content\/uploads\/2020\/10\/10230742\/kube-to-wordpress-1024x610.png\")
<\/figure>\n\n\n\n- VirtualBox [\uac01 VM \uc815\ubcf4]<\/strong>
CentOS 7.8 2003 (core) + 3.10.0-1127.19.1.el7.x86_64
MEMORY : 4G
CPU : 2
HDD : 50G
\ub124\ud2b8\uc6cc\ud06c \ubc29\uc2dd : \uc5b4\ub311\ud130\uc5d0 \ube0c\ub9ac\uc9c0<\/li><\/ul>\n\n\n\n“\ud14c\uc2a4\ud2b8\ud558\ub294\ub370 \uc800\ub807\uac8c \ub9ce\uc740 \uba54\ubaa8\ub9ac\uc640 \ub9ce\uc740 node\ub97c \uc0dd\uc131\ud560 \ud544\uc694\ub294 \uc5c6\uc2b5\ub2c8\ub2e4.
\uadf8\ub0e5 \uc81c \ub178\ud2b8\ubd81 \uc2a4\ud399\uc774 \uad34\ubb3c\uc774\ub77c \ud37c\uc92c\uc2b5\ub2c8\ub2e4.”<\/p>\n\n\n\n
\ucd5c\uc18c 2G \uba54\ubaa8\ub9ac\uba74 \ucda9\ubd84\ud788 \uc124\uce58\uac00 \uac00\ub2a5\ud569\ub2c8\ub2e4.
<\/p>\n\n\n\nKubernetes Install & Environment Setup<\/h2>\n\n\n\n
- Master – 1<\/strong>
Kubernetes \uc124\uce58\ub97c \uc704\ud574\uc11c\ub294 \uae30\ubcf8\uc801\uc778 \uc124\uce58 \ud658\uacbd\uc744 \ub9cc\ub4e4\uc5b4\uc8fc\uc5b4\uc57c \ud569\ub2c8\ub2e4.
VirtualBox\ub97c \uc774\uc6a9\ud558\uc5ec CentOS 7\ub97c \uc124\uce58\ud574 kube-master\ub97c \uc0dd\uc131\ud574\uc8fc\uace0
Master\uc5d0\uc11c \uc544\ub798 \ud658\uacbd\ub4e4\uc744 \uad6c\uc131\ud569\ub2c8\ub2e4.<\/li><\/ul>\n\n\n\n1 setenforce 0
2 sed -i ‘s\/^SELINUX=enforcing$\/SELINUX=permissive\/’ \/etc\/selinux\/config
3 sestatus
4 systemctl stop firewalld && systemctl disable firewalld
5 systemctl stop NetworkManager && systemctl disable NetworkManager
6 swapoff -a && sed -i ‘\/ swap \/ s\/^\/#\/’ \/etc\/fstab
7 cat <<EOF > \/etc\/sysctl.d\/k8s.conf
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
EOF
8 sysctl –system
9 cat <<EOF > \/etc\/yum.repos.d\/kubernetes.repo
[kubernetes]
name=Kubernetes
baseurl=https:\/\/packages.cloud.google.com\/yum\/repos\/kubernetes-el7-x86_64
enabled=1
gpgcheck=1
repo_gpgcheck=1
gpgkey=https:\/\/packages.cloud.google.com\/yum\/doc\/yum-key.gpg https:\/\/packages.cloud.google.com\/yum\/doc\/rpm-package-key.gpg
EOF
10 yum -y update
11 cat << EOF >> \/etc\/hosts
192.168.0.30 kube-master
192.168.0.31 kube-node1
192.168.0.32 kube-node2
192.168.0.33 kube-node3
EOF
12 cat \/etc\/hosts
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.0.30 kube-master
192.168.0.31 kube-node1
192.168.0.32 kube-node2
192.168.0.33 kube-node3
13 yum install -y yum-utils device-mapper-persistent-data lvm2
14 yum-config-manager –add-repo https:\/\/download.docker.com\/linux\/centos\/docker-ce.repo
15 yum update -y && yum install -y docker-ce
16 mkdir \/etc\/docker
17 cat > \/etc\/docker\/daemon.json <<EOF
{
“exec-opts”: [“native.cgroupdriver=systemd”],
“log-driver”: “json-file”,
“log-opts”: {
“max-size”: “100m”
},
“storage-driver”: “overlay2”,
“storage-opts”: [
“overlay2.override_kernel_check=true”
]
}
EOF
18 mkdir -p \/etc\/systemd\/system\/docker.service.d
19 yum install -y kubelet kubeadm kubectl \u2013disableexcludes=kubernetes<\/p>\n\n\n\n\uc5ec\uae30\uae4c\uc9c0 \uad6c\uc131\ud558\uc168\ub2e4\uba74 \uae30\ubcf8\uc801\uc778 \ub178\ub4dc \ubcf5\uc81c \uc804 \ubaa8\ub4e0 \uc124\uc815\ub4e4\uc774 \uad6c\uc131\ub41c \uac83\uc785\ub2c8\ub2e4.
\ub2e4\uc74c \uc791\uc5c5\uc744 \uc9c4\ud589\ud558\uae30 \uc804\uc5d0 \uc2a4\ub0c5\uc0f7\uc744 \uc0dd\uc131\ud558\uc2dc\uae30 \ubc14\ub78d\ub2c8\ub2e4.
\uc774 \uc2a4\ub0c5\uc0f7\uc740 \uc55e\uc73c\ub85c \ub2f9\uc2e0\uc758 \ucfe0\ubc84\ub124\ud2f0\uc2a4 \ubaa8\ud5d8\uc73c\ub85c\ubd80\ud130 \ub9ce\uc740 \ub3c4\uc6c0\uc744 \uc904 \uac83\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n![\"\"](\"https:\/\/cdn.manvscloud.com\/wp-content\/uploads\/2020\/10\/10235145\/snap-1024x972.png\")
<\/figure>\n\n\n\n\uc774\uc81c \uc124\uc815\uc744 \ub9c8\uce5c Kube-Master\ub97c \uc544\ub798\uc640 \uac19\uc740 \ubc29\ubc95\uc73c\ub85c Kube-Node1,2,3\uc73c\ub85c \ubcf5\uc81c\ud560 \uac83\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n
![\"\"](\"https:\/\/cdn.manvscloud.com\/wp-content\/uploads\/2020\/10\/10235502\/repl_1-1024x890.png\")
<\/figure>\n\n\n\n![\"\"](\"https:\/\/cdn.manvscloud.com\/wp-content\/uploads\/2020\/10\/10235520\/repl_2.png\")
<\/figure>\n\n\n\n![\"\"](\"https:\/\/cdn.manvscloud.com\/wp-content\/uploads\/2020\/10\/10235536\/repl_3.png\")
<\/figure>\n\n\n\n\ubaa8\ub4e0 Kube-Node \ubcf5\uc81c\ub97c \uc644\ub8cc\ud558\uc168\ub2e4\uba74 \uc774\uc81c \uc544\ub798 \uc791\uc5c5\uc73c\ub85c \ub118\uc5b4\uac00\uc154\ub3c4 \uc88b\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n
- Node – 1<\/strong>
Master\ub97c \ubcf5\uc81c\ud558\uc5ec Node\ub97c \ub9cc\ub4e4\uc5c8\uae30\ub54c\ubb38\uc5d0 Node\ub4e4\uc740 Master\uc640 \ub3d9\uc77c\ud55c IP\ub97c \uac16\uace0\uc788\uc2b5\ub2c8\ub2e4.
Node \ubcf5\uc81c\uac00 \uc644\ub8cc\ub418\uba74 \uac00\uc7a5 \uba3c\uc800 IP \ubcc0\uacbd\uacfc hostname \ubcc0\uacbd\uc744 \ud574\uc8fc\ub294 \uac83\uc774 \uc6b0\uc120\uc785\ub2c8\ub2e4. <\/li><\/ul>\n\n\n\n1 \/etc\/sysconfig\/network-scripts\/ifcfg-enp0s3
IPADDR=192.168.0.
2 systemctl restart network
3 hostnamectl set-hostname kube-node<\/p>\n\n\n\n- Master – 2<\/strong>
Node\uc758 \ub124\ud2b8\uc6cc\ud06c \uc124\uc815\uc774 \uc644\ub8cc\ub418\uba74 \ub2e4\uc2dc Master\ub85c \ub3cc\uc544\uc640\uc11c \uc124\uc815\uc744 \ub9c8\uc800\ud569\ub2c8\ub2e4.
\uc544\ub798 \uc124\uc815 \uc911\uc5d0 kubeadm join \uac12\uc744 \ubc18\ub4dc\uc2dc \uc800\uc7a5\ud574\ub450\uc2dc\uae30 \ubc14\ub78d\ub2c8\ub2e4.<\/li><\/ul>\n\n\n\n20 systemctl daemon-reload
21 iptables -nL
22 systemctl enable –now docker
23 docker run hello-world
24 systemctl enable –now kubelet
25 kubeadm init –pod-network-cidr=20.96.0.0\/12
# kubeadm join value \uac12\uc744 \ub530\ub85c \uc800\uc7a5\ud574\ub450\uc790.
# –token 7ovjlh.znruevaiqj9cbrk8 \\ –discovery-token-ca-cert-hash sha256:77ef7 – \uc774\ud558 \uc0dd\ub7b5
26 mkdir -p $HOME\/.kube
27 cp -i \/etc\/kubernetes\/admin.conf $HOME\/.kube\/config
28 chown $(id -u):$(id -g) $HOME\/.kube\/config
29 yum install bash-completion -y
30 source <(kubectl completion bash)
31 echo “source <(kubectl completion bash)” >> ~\/.bashrc<\/p>\n\n\n\n- Node – 2 <\/strong>
\uc704 Master-2<\/strong> \uc758 \uc791\uc5c5\uc774 \ubaa8\ub450 \uc644\ub8cc\ub418\uba74 Node\ub85c \ub3cc\uc544\uc640 \uc544\ub798\uc640 \uac19\uc740 \uc791\uc5c5\uc744 \ud574\uc90d\ub2c8\ub2e4.
Master\uc5d0\uc11c \uc800\uc7a5\ud574\ub454 \ubcf8\uc778\uc758 kubeadm join \uac12\uc744 \uc544\ub798\uc5d0 \ucd94\uac00\ud558\uc5ec \ubd99\uc5ec\uc90d\ub2c8\ub2e4.<\/li><\/ul>\n\n\n\n4 systemctl daemon-reload
5 systemctl enable –now docker
6 systemctl enable –now kubelet
7 kubeadm join 192.168.0.30:6443 –token 7ovjlh.znruevaiqj9cbrk8 \\
–discovery-token-ca-cert-hash sha256:77ef7c8c7325d309fa91cab608ce0eb94f30f300bd053db4c08341bf083ef53d<\/p>\n\n\n\n- Master – 3<\/strong>
\uc774\uc81c 99% \uc124\uce58\uac00 \uc644\ub8cc\ub410\ub2e4\uace0 \ubcf4\uc2dc\uba74 \ub429\ub2c8\ub2e4.
kubectl get nodes\ub97c \ud558\uc5ec Master\uc5d0\uc11c \uac01 Node\ub4e4\uc758 \uc0c1\ud0dc\ub97c \ud655\uc778\ud574\ubcf4\uc2dc\uae30 \ubc14\ub78d\ub2c8\ub2e4.
STATUS<\/strong> \uac12\uc774 READY<\/strong> \uc0c1\ud0dc\uc5ec\uc57c\ud569\ub2c8\ub2e4.<\/li><\/ul>\n\n\n\n32 kubectl get nodes
33 kubectl apply -f https:\/\/docs.projectcalico.org\/manifests\/calico.yaml
34 kubectl get pods –all-namespaces<\/p>\n\n\n\ncalico\ub3c4 \uc124\uce58\ud574\uc90d\ub2c8\ub2e4.
calico\ub294 \ucee8\ud14c\uc774\ub108 \uae30\ubc18\uc5d0\uc11c \uc0ac\uc6a9\ub418\ub294 \ub124\ud2b8\uc6cc\ud06c \ud50c\ub7ec\uadf8\uc778 \uc911\uc5d0 \ud558\ub098\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n![\"\"](\"https:\/\/cdn.manvscloud.com\/wp-content\/uploads\/2020\/10\/11000958\/run-1024x176.png\")
<\/figure>\n\n\n\ncalico\uac00 \uc815\uc0c1\uc801\uc73c\ub85c Running \uc911\uc774\uc2ed\ub2c8\uae4c?
\uc5ec\uae30\uae4c\uc9c0 \uc131\uacf5\ud558\uc168\ub2e4\uba74 Kubernetes 1.19 \uc124\uce58\uac00 \uc815\uc0c1\uc801\uc73c\ub85c \uc644\ub8cc\ub418\uc5c8\uc2b5\ub2c8\ub2e4.
<\/p>\n\n\n\n\ub9ce\uc740 \ub3c4\uc6c0\uc774 \ub418\uc168\uae38 \ubc14\ub77c\uba70,
\ud568\uaed8 Kubernetes \uc790\uaca9\uc99d \ub3c4\uc804\uc911\uc778 \uc6a9\uc0ac\ub2d8\ub4e4 \ud654\uc774\ud305\uc785\ub2c8\ub2e4!
<\/p>\n\n\n\n2\ubd80\uc5d0 \uc774\uc5b4\uc11c \uc124\uce58\ub41c Kubernetes\ub85c APM + WordPress \uc5f0\ub3d9\ud558\uc5ec
\uc11c\ube44\uc2a4\ub97c \uc6b4\uc601\ud574\ubcf4\ub3c4\ub85d \ud558\uaca0\uc2b5\ub2c8\ub2e4.
\uc77d\uc5b4\uc8fc\uc154\uc11c \uac10\uc0ac\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<\/p>\n\n\n\n
- Master – 3<\/strong>
- Node – 2 <\/strong>
- Master – 2<\/strong>
- Node – 1<\/strong>
- Master – 1<\/strong>