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Add root checks and given an appropriate message if not running as root and improve swap checks #4

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Add root checks and given an appropriate message if not running as root and improve swap checks #4

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71758ec
Add root checks and given an appropriate message if not running as root
sjmudd Dec 4, 2020
06ccf81
Improve swap check to catch more patterns
sjmudd Dec 4, 2020
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5 changes: 5 additions & 0 deletions setup-docker.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,11 @@
# script that runs
# https://kubernetes.io/docs/setup/production-environment/container-runtime

if [ $(id -u) != 0 ]; then
echo "Please run as root or use sudo."
exit 1
fi

yum install -y vim yum-utils device-mapper-persistent-data lvm2
yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo

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13 changes: 10 additions & 3 deletions setup-kubetools.sh
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Expand Up @@ -2,6 +2,11 @@
# kubeadm installation instructions as on
# https://kubernetes.io/docs/setup/production-environment/tools/kubeadm/install-kubeadm/

if [ $(id -u) != 0 ]; then
echo "Please run as root or use sudo."
exit 1
fi

cat <<EOF > /etc/yum.repos.d/kubernetes.repo
[kubernetes]
name=Kubernetes
Expand All @@ -16,9 +21,11 @@ EOF
setenforce 0
sed -i 's/^SELINUX=enforcing$/SELINUX=permissive/' /etc/selinux/config

# disable swap (assuming that the name is /dev/centos/swap
sed -i 's/^\/dev\/mapper\/centos-swap/#\/dev\/mapper\/centos-swap/' /etc/fstab
swapoff /dev/mapper/centos-swap
# disable swap (assuming that the name is /dev/centos*/swap)
for device in $(sed -e 's/#.*//' /etc/fstab | awk '$2 == "swap" { print $1 }' | grep ^/dev/); do
swapoff $device
sed -i -e "s,$device,#$device," /etc/fstab
done

yum install -y kubelet kubeadm kubectl --disableexcludes=kubernetes

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