K8s ubunbu에 containerd 기반으로 master node 설치(실패)

Update 및 Dependency 설치

sudo apt update && sudo apt upgrade -y
sudo apt install -y apt-transport-https curl

Swap disable

sudo swapoff -a
sudo sed -i '/swap/d' /etc/fstab

containerd 설치

sudo apt install -y containerd

# 셋팅
sudo mkdir -p /etc/containerd
containerd config default | sudo tee /etc/containerd/config.toml
sudo systemctl restart containerd
sudo systemctl enable containerd

k8s 설치

# repository 추가
sudo rm -f /etc/apt/sources.list.d/kubernetes.list
echo "deb https://pkgs.k8s.io/core:/stable:/v1.28/deb/ /" | sudo tee /etc/apt/sources.list.d/kubernetes.list
curl -fsSL https://pkgs.k8s.io/core:/stable:/v1.28/deb/Release.key | sudo tee /etc/apt/trusted.gpg.d/kubernetes-apt-keyring.asc

# # 설치
sudo apt update
sudo apt install -y kubelet kubeadm kubectl
sudo systemctl enable kubelet

# Cluster 초기화
sudo kubeadm init --pod-network-cidr=192.168.0.0/16

Master node 설정

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

# 확인
kubectl get nodes

Flannel 설치

kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml

repository 추가시 에러

# 실행
curl -fsSL https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo apt-key add -
echo "deb https://apt.kubernetes.io/ kubernetes-xenial main" | sudo tee /etc/apt/sources.list.d/kubernetes.list

# 경고
Warning: apt-key is deprecated. Manage keyring files in trusted.gpg.d instead (see apt-key(8)).

# 실행
sudo apt update

# 에러
The repository 'https://apt.kubernetes.io kubernetes-xenial Release' does not have a Release file.

# 실행
sudo apt install -y kubelet kubeadm kubectl

# 에러
E: Unable to locate package kubelet
E: Unable to locate package kubeadm
E: Unable to locate package kubectl

# 조치: repository 교체
sudo rm -f /etc/apt/sources.list.d/kubernetes.list
echo "deb https://pkgs.k8s.io/core:/stable:/v1.28/deb/ /" | sudo tee /etc/apt/sources.list.d/kubernetes.list
curl -fsSL https://pkgs.k8s.io/core:/stable:/v1.28/deb/Release.key | sudo tee /etc/apt/trusted.gpg.d/kubernetes-apt-keyring.asc

sudo kubeadm init --pod-network-cidr=192.168.0.0/16 실행시 에러

# 에러
[ERROR FileContent--proc-sys-net-bridge-bridge-nf-call-iptables]: /proc/sys/net/bridge/bridge-nf-call-iptables does not exist
[ERROR FileContent--proc-sys-net-ipv4-ip_forward]: /proc/sys/net/ipv4/ip_forward contents are not set to 1
 
 
 # 조치
 sudo modprobe br_netfilter
echo "br_netfilter" | sudo tee /etc/modules-load.d/k8s.conf

cat <<EOF | sudo tee /etc/sysctl.d/k8s.conf
net.bridge.bridge-nf-call-iptables=1
net.bridge.bridge-nf-call-ip6tables=1
net.ipv4.ip_forward=1
EOF

sudo sysctl --system

# 확인
sysctl net.bridge.bridge-nf-call-iptables
sysctl net.bridge.bridge-nf-call-ip6tables
sysctl net.ipv4.ip_forward

kubectl 실행시 에러

# 실행
kubectl get nodes

# 에러
E0215 13:23:19.407595   41695 memcache.go:265] couldn't get current server API group list: Get "https://192.168.0.59:6443/api?timeout=32s": dial tcp 192.168.0.59:6443: connect: connection refused
E0215 13:23:19.407806   41695 memcache.go:265] couldn't get current server API group list: Get "https://192.168.0.59:6443/api?timeout=32s": dial tcp 192.168.0.59:6443: connect: connection refused
E0215 13:23:19.409108   41695 memcache.go:265] couldn't get current server API group list: Get "https://192.168.0.59:6443/api?timeout=32s": dial tcp 192.168.0.59:6443: connect: connection refused
E0215 13:23:19.409271   41695 memcache.go:265] couldn't get current server API group list: Get "https://192.168.0.59:6443/api?timeout=32s": dial tcp 192.168.0.59:6443: connect: connection refused
E0215 13:23:19.410435   41695 memcache.go:265] couldn't get current server API group list: Get "https://192.168.0.59:6443/api?timeout=32s": dial tcp 192.168.0.59:6443: connect: connection refused
The connection to the server 192.168.0.59:6443 was refused - did you specify the right host or port?

# 조치: Cluster 초기화 다시 수행
sudo kubeadm reset -f

sudo systemctl restart kubelet
sudo systemctl restart containerd

sudo kubeadm init --pod-network-cidr=192.168.0.0/16

# 확인
kubectl get nodes