Da GazziNet.
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| Riga 39: |
Riga 39: |
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| sudo sed -i 's/^disabled_plugins = \["cri"\]$/enabled_plugins = \["cri"\]/' /etc/containerd/config.toml | | sudo sed -i 's/^disabled_plugins = \["cri"\]$/enabled_plugins = \["cri"\]/' /etc/containerd/config.toml |
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| FATE SNAP!!
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| reboot | | reboot |
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| # This overwrites any existing configuration in /etc/yum.repos.d/kubernetes.repo
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| cat <<EOF | sudo tee /etc/yum.repos.d/kubernetes.repo
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| [kubernetes]
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| name=Kubernetes
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| baseurl=https://pkgs.k8s.io/core:/stable:/v1.30/rpm/
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| enabled=1
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| gpgcheck=1
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| gpgkey=https://pkgs.k8s.io/core:/stable:/v1.30/rpm/repodata/repomd.xml.key
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| exclude=kubelet kubeadm kubectl cri-tools kubernetes-cni
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| EOF
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| sudo yum install -y kubelet kubeadm kubectl --disableexcludes=kubernetes
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| sudo systemctl enable --now kubelet
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| sudo modprobe overlay
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| sudo modprobe br_netfilter
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| sudo sysctl --system
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| sudo reboot
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| ATTENZIONE SOLO SUL NODO PRINCIPALE:
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| kubeadm init (attenzione mettete l'opzione dell'ip)
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| kubectl apply -f https://docs.projectcalico.org/manifests/calico.yaml
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| --ngix--provate--
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| kubectl apply -f https://raw.githubusercontent.com/metallb/metallb/v0.14.5/config/manifests/metallb-native.yaml
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| kubectl create secret generic -n metallb-system memberlist --from-literal=secretkey="$(openssl rand -base64 128)"
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| Crea un file metallb-config.yaml
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| apiVersion: metallb.io/v1beta1
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| kind: IPAddressPool
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| metadata:
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| name: first-pool
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| namespace: metallb-system
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| spec:
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| addresses:
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| - 172.16.1.150-172.16.1.160
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| kubectl apply -f metallb-config.yaml
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| Crea un file YAML per il deployment di Nginx, chiamato nginx-deployment.yaml:
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| apiVersion: apps/v1
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| kind: Deployment
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| metadata:
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| name: nginx-deployment
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| spec:
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| replicas: 3
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| selector:
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| matchLabels:
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| app: nginx
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| template:
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| metadata:
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| labels:
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| app: nginx
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| spec:
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| containers:
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| - name: nginx
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| image: nginx:latest
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| ports:
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| - containerPort: 80
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| kubectl apply -f nginx-deployment.yaml
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| Crea un file YAML per il servizio, chiamato nginx-service.yaml:
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| apiVersion: v1
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| kind: Service
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| metadata:
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| name: nginx-service
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| spec:
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| type: LoadBalancer
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| loadBalancerIP: 172.16.1.150 # IP statico desiderato
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| selector:
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| app: nginx
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| ports:
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| - protocol: TCP
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| port: 80
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| targetPort: 80
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| kubectl apply -f nginx-service.yaml
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| --- aGGIUNGERE ALTRO NODO:
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| da /root/.kube
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| scp config root@172.16.1.201:$PWD
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| guardare: https://www.youtube.com/watch?v=zNbqxPRTjFg
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| https://goteleport.com/blog/troubleshooting-kubernetes-networking/
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| https://kube-vip.io/docs/troubleshooting/arp/
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Versione delle 17:35, 19 mag 2024
Prereq: Iso Oracle linux 8.9 - 4VCPU 8Gbyte di RAM - 32Gbyte disco
Tutto in inglese solo tastiera e Timezone
Software selection: Minimal Install
Partizione: ol-root 30GiB - /boot 1024Mbyte
Settare in installazione IP e Hostname.
Settare Root Password
dnf update -y;
systemctl disable firewalld;
systemctl stop firewalld;
sudo setenforce 0;
sudo sed -i 's/^SELINUX=enforcing$/SELINUX=disabled/' /etc/selinux/config;
dnf install net-tools -y;
dnf install curl -y;
dnf install wget -y;
dnf install -y iproute-tc;
dnf install dnsutils -y
sudo yum install -y yum-utils;
reboot
sudo yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo;
sudo yum install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin;
sudo systemctl start docker;
sudo systemctl enable docker;
sudo docker run hello-world;
Mettere a posto il file hosts con la risoluzione dei nodi es.:
172.16.1.200 kuber01 kuber01.gazzi.net
172.16.1.201 kuber02 kuber02.gazzi.net
abilitare:
sudo sed -i 's/^disabled_plugins = \["cri"\]$/enabled_plugins = \["cri"\]/' /etc/containerd/config.toml
reboot