k8s-kubeadm

k8s-kubeadm

cat <<EOF | sudo tee /etc/modules-load.d/containerd.conf
overlay
br_netfilter
ip_vs_rr
ip_vs_wrr
ip_vs_sh
nf_conntrack_ipv4
ip_vs
EOF

sudo modprobe overlay
sudo modprobe br_netfilter


cat <<EOF | sudo tee /etc/sysctl.d/99-kubernetes-cri.conf
net.bridge.bridge-nf-call-iptables = 1
net.ipv4.ip_forward = 1
net.bridge.bridge-nf-call-ip6tables = 1
EOF


sudo sysctl --system


# apt-get update -y && apt-get upgrade -y

# sudo apt-get install -y apt-transport-https ca-certificates curl

# Docker
# curl -fsSL https://get.docker.com | bash

##################### 
# Container

# apt-get install -y containerd.io
# mkdir -p /etc/containerd
# containerd config default > /etc/containerd/config.toml
# systemctl restart containerd
 

# curl -fsSLo /usr/share/keyrings/kubernetes-archive-keyring.gpg https://packages.cloud.google.com/apt/doc/apt-key.gpg

# sudo echo "deb [signed-by=/usr/share/keyrings/kubernetes-archive-keyring.gpg] https://apt.kubernetes.io/ kubernetes-xenial main" | sudo tee /etc/apt/sources.list.d/kubernetes.list


# apt-get update

# apt-get install -y kubelet kubeadm kubectl
# apt-mark hold kubelet kubeadm kubectl

# swapoff -a

# vim /etc/fstab
# sed -Ei 's/(.*swap.*)/#\1/g' /etc/fstab

# kubeadm config images pull

# kubeadm init

# mkdir -p $HOME/.kube

# sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config

# sudo chown $(id -u):$(id -g) $HOME/.kube/config

# kubectl apply -f "https://cloud.weave.works/k8s/net?k8s-version=$(kubectl version | base64 | tr -d '\n')"

# kubectl get pods -n kube-system
kubectl taint nodes --all node-role.kubernetes.io/master-

# kubeadm join --token 39c341.a3bc3c4dd49758d5 IP_DO_MASTER:6443 --discovery-token-ca-cert-hash sha256:37092 

# kubectl get nodes

# kubectl describe node elliot-03

# kubeadm token create --print-join-command
kubeadm token create --print-join-command
# echo "source <(kubectl completion bash)" >> ~/.bashrc

# kubectl get namespace

# kubectl get pods -n kube-system

# kubectl get pods --all-namespaces

# kubectl run nginx --image nginx

# kubectl get deployments

# kubectl describe deployment nginx

# kubectl get events

# kubectl get deployment nginx -o yaml

# kubectl get deployment nginx -o yaml > meu_primeiro.yaml

# kubectl delete deployment nginx

# kubectl create -f meu_primeiro.yaml

# kubectl delete -f meu_primeiro.yaml

# kubectl get deploy,pod

# kubectl expose deployment/nginx

# kubectl get svc nginx 

# kubectl describe pod nginx-6f858d4d45-qxjlh

# kubectl get pods -o wide

# kubectl delete pods nginx-6f858d4d45-qxjlh


### Reset de cluster

kubectl delete -f "https://cloud.weave.works/k8s/net?k8s-version=$(kubectl version | base64 | tr -d '\n')"
sleep 10

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

kubeadm init --pod-network-cidr=10.244.0.0/16



kubectl drain xxxx --delete-local-data --force --ignore-daemonsets
kubectl delete nodexxxx

kubeadm reset -f
rm -rf /etc/cni /etc/kubernetes /var/lib/dockershim /var/lib/etcd /var/lib/kubelet /var/run/kubernetes ~/.kube/*

 systemctl stop kubelet
systemctl start docker
rm -rf /var/lib/cni/
rm -rf /var/lib/kubelet/*
rm -rf /etc/cni/
ifconfig cni0 down
ifconfig flannel.1 down
ip link delete cni0
ip link delete flannel.1


kubeadm join xxx:6443 --token kiisv4.nv33sjbgv9wyzn17 \
    --discovery-token-ca-cert-hash sha256:699b5f7216d4c6f08ac751576ffce44a1033dd813fa85b832c7d917927edab02


 

https://blog.exxactcorp.com/deploying-dynamic-nfs-provisioning-in-kubernetes/