40 lines
1.1 KiB
Bash
Executable File
40 lines
1.1 KiB
Bash
Executable File
#!/bin/bash
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# kubeadm installation instructions as on
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# https://kubernetes.io/docs/setup/production-environment/tools/kubeadm/install-kubeadm/
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if [ $(id -u) != 0 ]; then
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echo "Please run as root or use sudo."
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exit 1
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fi
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cat <<EOF > /etc/yum.repos.d/kubernetes.repo
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[kubernetes]
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name=Kubernetes
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baseurl=https://packages.cloud.google.com/yum/repos/kubernetes-el7-x86_64
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enabled=1
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gpgcheck=1
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repo_gpgcheck=1
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gpgkey=https://packages.cloud.google.com/yum/doc/yum-key.gpg https://packages.cloud.google.com/yum/doc/rpm-package-key.gpg
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EOF
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# Set SELinux in permissive mode (effectively disabling it)
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setenforce 0
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sed -i 's/^SELINUX=enforcing$/SELINUX=permissive/' /etc/selinux/config
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# disable swap (assuming that the name is /dev/centos*/swap)
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for device in $(sed -e 's/#.*//' /etc/fstab | awk '$2 == "swap" { print $1 }' | grep ^/dev/); do
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swapoff $device
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sed -i -e "s,$device,#$device," /etc/fstab
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done
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yum install -y kubelet kubeadm kubectl --disableexcludes=kubernetes
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systemctl enable --now kubelet
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# Set iptables bridging
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cat <<EOF > /etc/sysctl.d/k8s.conf
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net.bridge.bridge-nf-call-ip6tables = 1
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net.bridge.bridge-nf-call-iptables = 1
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EOF
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sysctl --system
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