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k8s/0.crea_VM.sh

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+# Crea variables
+# ID de VM
+VMID="919200"
+
+# lugar de almacenamiento para el disco
+### VMSTORAGE="VMs_storage-E"
+VMSTORAGE="local"
+
+# network
+### VMNET="k8s"
+VMNET="vmbr0"
+
+# hostname
+VMHOST="k8scp"
+
+# Genera la configuracion inicial de CLoudInit
+./genera_yaml_k8s.sh
+
+# apaga y borra la VM si existe antes
+qm stop $VMID
+qm destroy $VMID
+
+qm create $VMID --name $VMHOST --memory 8192 --cores 4 --net0 virtio,bridge=$VMNET --cpu host --agent enabled=1 --tags k8s
+qm set $VMID --ide2 VMs_storage-E:cloudinit --boot c --bootdisk scsi0 --serial0 socket --vga serial0
+
+# qm importdisk $VMID /mnt/pve/ISOs_storage/template/iso/ubuntu-24.04-server-cloudimg-amd64.img VMs_storage-E --format qcow2
+qm importdisk $VMID /mnt/pve/ISOs_storage/template/iso/ubuntu-24.04-server-cloudimg-amd64.img local --format qcow2
+qm set $VMID --scsihw virtio-scsi-pci --scsi0 $VMSTORAGE:$VMID/vm-$VMID-disk-0.qcow2 
+qm disk resize $VMID scsi0 40G
+qm set $VMID --ipconfig0 ip=dhcp --cicustom "user=VMs_storage-E:snippets/user_data.yaml"
+
+qm start $VMID

k8s/1.instala_kubernetes.sh

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+#!/bin/bash
+
+# Variables
+USER="curso" # Usuario con acceso sudo
+
+# Actualizar sistema
+echo "Actualizando el sistema..."
+sudo apt-get update && sudo apt-get upgrade -y
+
+# Desactivar swap (requisito de Kubernetes)
+## echo "Desactivando swap..."
+## sudo swapoff -a
+## sudo sed -i '/ swap / s/^\(.*\)$/#\1/g' /etc/fstab
+
+
+# Habilitar módulos necesarios para Kubernetes
+echo "Habilitando módulos del kernel..."
+sudo modprobe overlay
+sudo modprobe br_netfilter
+
+
+# Configure persistent loading of modules
+# sudo tee /etc/modules-load.d/k8s.conf <<EOF
+sudo tee /etc/modules-load.d/containerd.conf <<EOF
+overlay
+br_netfilter
+EOF
+
+# Requisitos para Kubernetes
+cat <<EOF | sudo tee /etc/sysctl.d/kubernetes.conf
+net.bridge.bridge-nf-call-ip6tables = 1
+net.bridge.bridge-nf-call-iptables = 1
+net.ipv4.ip_forward = 1
+EOF
+
+sudo sysctl --system
+
+
+
+# Install required packages
+sudo apt install curl gnupg2 software-properties-common apt-transport-https ca-certificates -y
+
+
+# Add Docker repo
+curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /etc/apt/trusted.gpg.d/docker-archive-keyring.gpg
+
+sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable" -y
+
+# Install containerd
+sudo apt update
+sudo apt install containerd.io -y
+
+# Configure containerd and start service
+# sudo mkdir -p /etc/containerd
+sudo containerd config default|sudo tee /etc/containerd/config.toml >/dev/null 2>&1
+sudo sed -i 's/SystemdCgroup \= false/SystemdCgroup \= true/g' /etc/containerd/config.toml
+sudo sed -i 's/pause:3.8/pause:3.10/g' /etc/containerd/config.toml
+
+# restart containerd
+sudo systemctl restart containerd
+# sudo systemctl enable containerd
+# systemctl status  containerd
+
+
+
+
+
+
+# Configurar el repositorio de Kubernetes
+echo "Agregando el repositorio de Kubernetes..."
+### sudo apt-get install apt-transport-https ca-certificates curl -y
+# If the folder `/etc/apt/keyrings` does not exist, it should be created before the curl command, read the note below.
+# sudo mkdir -p -m 755 /etc/apt/keyrings
+##### curl -fsSL https://pkgs.k8s.io/core:/stable:/v1.30/deb/Release.key | sudo gpg --dearmor -o /etc/apt/keyrings/k8s.gpg
+curl -fsSL https://pkgs.k8s.io/core:/stable:/v1.32/deb/Release.key | sudo gpg --dearmor -o /etc/apt/keyrings/kubernetes-apt-keyring.gpg
+#sudo chmod 644 /etc/apt/keyrings/kubernetes-apt-keyring.gpg # allow unprivileged APT programs to read this keyring
+
+# This overwrites any existing configuration in /etc/apt/sources.list.d/kubernetes.list
+##### echo 'deb [signed-by=/etc/apt/keyrings/k8s.gpg] https://pkgs.k8s.io/core:/stable:/v1.30/deb/ /' | sudo tee /etc/apt/sources.list.d/k8s.list
+echo 'deb [signed-by=/etc/apt/keyrings/kubernetes-apt-keyring.gpg] https://pkgs.k8s.io/core:/stable:/v1.32/deb/ /' | sudo tee /etc/apt/sources.list.d/kubernetes.list
+#sudo chmod 644 /etc/apt/sources.list.d/kubernetes.list   # helps tools such as command-not-found to work correctly
+
+
+#curl -fsSL https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo gpg --dearmor -o /usr/share/keyrings/kubernetes-archive-keyring.gpg
+#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
+
+# Instalar Kubernetes
+echo "Instalando Kubernetes (kubeadm, kubelet, kubectl)..."
+sudo apt-get update
+#sudo apt-get install -y kubelet=$KUBERNETES_VERSION kubeadm=$KUBERNETES_VERSION kubectl=$KUBERNETES_VERSION
+sudo apt-get install kubelet kubeadm kubectl -y
+sudo apt-mark hold kubelet kubeadm kubectl
+
+
+
+# Instalar containerd
+#echo "Instalando containerd..."
+#    sudo apt-get install -y containerd
+#    sudo mkdir -p /etc/containerd
+#    containerd config default | sudo tee /etc/containerd/config.toml
+
+    # Configurar containerd para usar systemd como driver de cgroup
+#    sudo sed -i 's/SystemdCgroup = false/SystemdCgroup = true/' /etc/containerd/config.toml
+#    sudo systemctl restart containerd
+#    sudo systemctl enable containerd
+
+#sudo kubeadm config images pull
+

k8s/2.levanta_cluster.sh

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+#!/bin/bash
+
+# Variables
+USER="curso" # Usuario con acceso sudo
+
+sudo kubeadm config images pull
+
+echo "Inicializando el nodo maestro..."
+sudo kubeadm init --control-plane-endpoint=k8s01 --upload-certs --pod-network-cidr=172.24.0.0/16
+
+
+# sudo kubeadm init --pod-network-cidr=174.24.0.0/16 --cri-socket=unix:///run/containerd/containerd.sock --upload-certs --control-plane-endpoint=k8scp
+
+# Configurar kubectl para el usuario
+echo "Configurando kubectl para el usuario $USER..."
+mkdir -p /home/$USER/.kube
+sudo cp -i /etc/kubernetes/admin.conf /home/$USER/.kube/config
+sudo chown $(id -u $USER):$(id -g $USER) /home/$USER/.kube/config
+
+# eliminar restriccion de pods en el master
+kubectl taint nodes --all node-role.kubernetes.io/control-plane-
+

k8s/3.instala_calico.sh

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+#!/bin/bash
+
+# instala con operator -ok-
+
+curl -O https://raw.githubusercontent.com/projectcalico/calico/v3.29.1/manifests/tigera-operator.yaml
+curl -O https://raw.githubusercontent.com/projectcalico/calico/v3.29.1/manifests/custom-resources.yaml
+
+sed -i 's/192.168.0.0/172.24.0.0/g' custom-resources.yaml
+
+
+kubectl create -f tigera-operator.yaml
+kubectl create -f custom-resources.yaml
+
+
+kubectl get pods -A
+
+
+### kubectl get pods -A -w
+
+
+
+
+
+## instala con manifest -deprecated-
+
+# kubectl apply -f https://raw.githubusercontent.com/projectcalico/calico/v3.29.1/manifests/calico.yaml
+
+#### wget https://raw.githubusercontent.com/projectcalico/calico/v3.29.1/manifests/calico.yaml
+#### sed -ie 's/192.168.0.0/172.24.0.0/g' calico.yaml
+
+

k8s/4.prueba_k8s.sh

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+#!/bin/bash
+
+# Variables
+
+kubectl create ns demo-app
+kubectl create deployment nginx-app --image nginx --replicas 2 --namespace demo-app
+kubectl get deployment -n demo-app
+kubectl get pods -n demo-app
+
+kubectl scale --replicas=20 deployment nginx-app -n demo-app
+
+kubectl delete  deployment nginx-app -n demo-app
+
+kubectl expose deployment nginx-app -n demo-app --type NodePort --port 80
+kubectl get svc -n demo-app
+
+# poner la IP obtenida
+#### curl http://<Any-worker-IP>:<puerto>
+
+curl http://localhost:30336
+
+
+kubectl create ns demo-app
+
+
+
+
+kubectl run test-pod2 --image=busybox -- sleep 3600
+
+kubectl create deployment gitea-app2 --image gitea/gitea:latest --replicas 2 --namespace demo-app
+
+kubectl describe pod nginx-app --namespace demo-app | less
+
+kubectl delete deployment gitea-app --namespace demo-app

k8s/5.autocomplete_in_bash.sh

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+#!/bin/bash
+
+echo 'source <(kubectl completion bash)' >>~/.bashrc
+
+# Reload sourcefile again (located on home)
+source .bashrc 
+

k8s/6.borra_cluster.sh

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+#!/bin/bash
+
+# Variables
+
+sudo kubeadm reset -f
+
+sudo rm -rf /etc/cni/net.d
+
+sudo ip link show | grep cni
+sudo ip link delete <nombre-del-bridge>
+
+sudo rm -rf /var/lib/kubelet /var/lib/dockershim /var/lib/etcd /var/lib/cni
+
+
+

k8s/add-nodo.md

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+
+Your Kubernetes control-plane has initialized successfully!
+
+To start using your cluster, you need to run the following as a regular user:
+
+  mkdir -p $HOME/.kube
+  sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
+  sudo chown $(id -u):$(id -g) $HOME/.kube/config
+
+Alternatively, if you are the root user, you can run:
+
+  export KUBECONFIG=/etc/kubernetes/admin.conf
+
+You should now deploy a pod network to the cluster.
+Run "kubectl apply -f [podnetwork].yaml" with one of the options listed at:
+  https://kubernetes.io/docs/concepts/cluster-administration/addons/
+
+You can now join any number of control-plane nodes running the following command on each as root:
+
+  kubeadm join k8s01:6443 --token mlv46u.o92gie7d9wseptfx \
+        --discovery-token-ca-cert-hash sha256:2c20f2d546d59772bb0a82fae16c213c8c7a35b80365f39cd6e5be037f84a94a \
+        --control-plane --certificate-key 8985eb6d3979f371b7c2dbd98e14f071fe7fd1a86468112d501c29ffe7e6843e
+
+Please note that the certificate-key gives access to cluster sensitive data, keep it secret!
+As a safeguard, uploaded-certs will be deleted in two hours; If necessary, you can use
+"kubeadm init phase upload-certs --upload-certs" to reload certs afterward.
+
+Then you can join any number of worker nodes by running the following on each as root:
+
+kubeadm join k8s01:6443 --token mlv46u.o92gie7d9wseptfx \
+        --discovery-token-ca-cert-hash sha256:2c20f2d546d59772bb0a82fae16c213c8c7a35b80365f39cd6e5be037f84a94a 
+
+        

k8s/crea_VM copy.sh

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+# Crea variables
+# ID de VM
+VMID="919200"
+
+# lugar de almacenamiento para el disco
+### VMSTORAGE="VMs_storage-E"
+VMSTORAGE="local"
+
+# network
+### VMNET="k8s"
+VMNET="vmbr0"
+
+# Genera la configuracion inicial de CLoudInit
+./genera_yaml_k8s.sh
+
+# apaga y borra la VM si existe antes
+qm stop $VMID
+qm destroy $VMID
+
+qm create $VMID --name ubuntu-cloud --memory 2048 --cores 2 --net0 virtio,bridge=$VMNET --cpu host --agent enabled=1 --tags k8s
+
+# qm importdisk $VMID /mnt/pve/ISOs_storage/template/iso/ubuntu-24.04-server-cloudimg-amd64.img VMs_storage-E --format qcow2
+qm importdisk $VMID /mnt/pve/ISOs_storage/template/iso/ubuntu-24.04-server-cloudimg-amd64.img local --format qcow2
+
+qm set $VMID --scsihw virtio-scsi-pci --scsi0 $VMSTORAGE:$VMID/vm-$VMID-disk-0.qcow2
+
+qm set $VMID --ide2 VMs_storage-E:cloudinit 
+qm set $VMID --boot c --bootdisk scsi0
+qm set $VMID --serial0 socket --vga serial0
+
+qm disk resize $VMID scsi0 10G
+
+qm set $VMID --ipconfig0 ip=dhcp
+
+qm set $VMID --cicustom "user=VMs_storage-E:snippets/user_data.yaml"
+
+qm start $VMID

k8s/genera_yaml_k8s.sh

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+#!/bin/bash
+#
+# Crea la base para la plantilla para kubernetes, borrando el machine-id y apagandola
+# Despues usar qm template para convertirla 
+#
+
+USER="curso"
+PASSWORD="1"
+PASSWORD_HASH=$(openssl passwd -6 "$PASSWORD")
+PUB_KEY=$(cat ~/.ssh/id_rsa.pub)
+VMHOST="k8scp"
+
+cat <<EOF > /mnt/pve/VMs_storage-E/snippets/user_data.yaml
+#cloud-config
+
+system_info:
+  default_user:
+    name: $USER
+    sudo: ALL=(ALL) NOPASSWD:ALL
+    shell: /bin/bash
+    lock_passwd: false
+    passwd: $PASSWORD_HASH
+    # passwd: \$6\$ogQI1CDWE.wdcMWI\$6kIrEjVBNC5.YxxFwBY9CxFGnIg1SDhndG4niMn5Sz11NNqay4icJS4AAddY6WbcM7LZJsLzwiYeUCLq2ddmL0
+    ssh_authorized_keys:
+      - $PUB_KEY
+ssh_pwauth: true
+hostname: $VMHOST
+manage_etc_hosts: true
+fqdn: $VMHOST
+runcmd:
+  - cd /root
+  - git clone https://git.lfgut.duckdns.org/luis/infra_cloudinit.git
+  - cd infra_cloudinit
+  - ./k8s.sh
+EOF
+
+echo "Archivo user_data.yaml creado con éxito."
+
+

k8s/k8s copy.sh

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+#!/bin/bash
+
+
+# Actualización del sistema
+apt update && apt upgrade -y
+
+# Instalación de dependencias necesarias
+apt install qemu-guest-agent apt-transport-https ca-certificates curl software-properties-common -y
+systemctl enable --now qemu-guest-agent 
+
+# https://kubernetes.io/docs/tasks/tools/install-kubectl-linux/
+# version 1.32
+
+# Agregar la clave de Google Cloud
+curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo apt-key add -
+
+
+# Agregar el repositorio de Kubernetes
+echo "deb https://apt.kubernetes.io/ kubernetes-xenial main" | sudo tee /etc/apt/sources.list.d/kubernetes.list
+
+
+# Actualizar los repositorios e instalar Kubernetes
+apt update
+apt install kubelet kubeadm kubectl -y
+
+# Marcar los paquetes para que no se actualicen
+apt-mark hold kubelet kubeadm kubectl
+ 
+# Habilitar el servicio kubelet
+sudo systemctl enable kubelet && sudo systemctl start kubelet
+
+# Instalar herramientas de red para el cluster (Flannel como ejemplo)
+kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml
+
+# Reiniciar para aplicar cambios
+sudo reboot
+

k8s/k8s.sh

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+#!/bin/bash
+
+
+# Actualización del sistema
+apt update && apt upgrade -y
+
+# Instalación de dependencias necesarias
+apt install qemu-guest-agent -y
+systemctl enable --now qemu-guest-agent 

k8s/k8s_001.sh

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+apt update
+apt upgrade -y
+apt install apt-transport-https qemu-guest-agent -y
+systemctl enable --now qemu-guest-agent
+
+# https://kubernetes.io/docs/tasks/tools/install-kubectl-linux/
+# version 1.32
+
+curl -fsSL https://pkgs.k8s.io/core:/stable:/v1.32/deb/Release.key | gpg --dearmor -o /etc/apt/keyrings/kubernetes-apt-keyring.gpg
+chmod 644 /etc/apt/keyrings/kubernetes-apt-keyring.gpg
+  
+echo 'deb [signed-by=/etc/apt/keyrings/kubernetes-apt-keyring.gpg] https://pkgs.k8s.io/core:/stable:/v1.32/deb/ /' | sudo tee /etc/apt/sources.list.d/kubernetes.list
+chmod 644 /etc/apt/sources.list.d/kubernetes.list
+  
+apt update
+apt install kubelet kubeadm kubectl -y
+apt-mark hold kubelet kubeadm kubectl
+ 
+
+# Enable kernel modules
+modprobe overlay
+modprobe br_netfilter
+
+# Add some settings to sysctl
+tee /etc/sysctl.d/kubernetes.conf<<EOF
+net.bridge.bridge-nf-call-ip6tables = 1
+net.bridge.bridge-nf-call-iptables = 1
+net.ipv4.ip_forward = 1
+EOF
+
+# Reload sysctl
+sysctl --system
+
+# Configure persistent loading of modules
+tee /etc/modules-load.d/containerd.conf <<EOF
+overlay
+br_netfilter
+EOF
+
+# Install required packages
+apt install -y curl gnupg2 software-properties-common apt-transport-https ca-certificates
+
+# Add Docker repo
+curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /etc/apt/trusted.gpg.d/docker-archive-keyring.gpg
+
+add-apt-repository -y "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"
+
+# Install containerd
+apt update
+DEBIAN_FRONTEND=noninteractive apt install -y containerd.io
+
+# Configure containerd and start service
+mkdir -p /etc/containerd
+containerd config default|sudo tee /etc/containerd/config.toml
+
+# restart containerd
+systemctl restart containerd
+systemctl enable containerd
+systemctl status  containerd