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disabling swap in raspberrypi

This commit is contained in:
juvdiaz 2026-05-23 22:10:45 -06:00
parent 8c96d4ce10
commit cac1e8782b
1 changed files with 95 additions and 7 deletions
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102
bootstrap/cluster/main.tf
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@ -29,9 +29,39 @@ resource "null_resource" "kubeadm_control_plane" {
set -euo pipefail
sudo apt-get update
sudo apt-get install -y open-iscsi nfs-common
sudo apt-get install -y curl open-iscsi nfs-common
sudo systemctl enable --now iscsid
sudo systemctl enable --now kubelet || true
sudo systemctl enable kubelet || true
sudo swapoff -a || true
sudo awk '
/^[[:space:]]*#/ { print; next }
$3 == "swap" { print "# kubeadm-disabled " $0; next }
{ print }
' /etc/fstab | sudo tee /etc/fstab.kubeadm >/dev/null
sudo mv /etc/fstab.kubeadm /etc/fstab
sudo tee /etc/modules-load.d/k8s.conf >/dev/null <<'MODULES_EOT'
overlay
br_netfilter
MODULES_EOT
sudo modprobe overlay || true
sudo modprobe br_netfilter || true
sudo tee /etc/sysctl.d/99-kubernetes-cri.conf >/dev/null <<'SYSCTL_EOT'
net.bridge.bridge-nf-call-iptables = 1
net.bridge.bridge-nf-call-ip6tables = 1
net.ipv4.ip_forward = 1
SYSCTL_EOT
sudo sysctl -w net.ipv4.ip_forward=1 >/dev/null
if [ -e /proc/sys/net/bridge/bridge-nf-call-iptables ]; then
sudo sysctl -w net.bridge.bridge-nf-call-iptables=1 >/dev/null
sudo sysctl -w net.bridge.bridge-nf-call-ip6tables=1 >/dev/null
fi
if ! getent hosts "${self.triggers.node_name}" >/dev/null; then
printf '%s %s\n' "${self.triggers.advertise_address}" "${self.triggers.node_name}" | sudo tee -a /etc/hosts >/dev/null
fi
sudo mkdir -p /etc/containerd
if [ ! -f /etc/containerd/config.toml ]; then
@ -55,11 +85,22 @@ for path in "$${pv_dirs[@]}"; do
sudo chmod 0775 "$path"
done
if [ ! -f /etc/kubernetes/admin.conf ] && [ -d /etc/kubernetes ]; then
sudo kubeadm reset --force || true
sudo systemctl stop kubelet 2>/dev/null || true
sudo rm -rf /etc/kubernetes/ /var/lib/etcd/ /var/lib/kubelet/ /var/lib/cni/ /etc/cni/net.d
fi
if [ ! -f /etc/kubernetes/admin.conf ]; then
sudo kubeadm init \
sudo systemctl stop kubelet 2>/dev/null || true
if ! sudo kubeadm init \
--pod-network-cidr=${self.triggers.pod_network_cidr} \
--node-name=${self.triggers.node_name} \
--apiserver-advertise-address=${self.triggers.advertise_address}
--apiserver-advertise-address=${self.triggers.advertise_address}; then
sudo systemctl status kubelet --no-pager -l || true
sudo journalctl -u kubelet --no-pager -n 160 || true
exit 1
fi
fi
mkdir -p "$(dirname "${self.triggers.kubeconfig_path}")"
@ -111,9 +152,39 @@ resource "null_resource" "kubeadm_worker" {
set -eu
sudo apt-get update
sudo apt-get install -y open-iscsi nfs-common
sudo apt-get install -y curl open-iscsi nfs-common
sudo systemctl enable --now iscsid
sudo systemctl enable --now kubelet || true
sudo systemctl enable kubelet || true
sudo swapoff -a || true
sudo awk '
/^[[:space:]]*#/ { print; next }
$3 == "swap" { print "# kubeadm-disabled " $0; next }
{ print }
' /etc/fstab | sudo tee /etc/fstab.kubeadm >/dev/null
sudo mv /etc/fstab.kubeadm /etc/fstab
sudo tee /etc/modules-load.d/k8s.conf >/dev/null <<'MODULES_EOT'
overlay
br_netfilter
MODULES_EOT
sudo modprobe overlay || true
sudo modprobe br_netfilter || true
sudo tee /etc/sysctl.d/99-kubernetes-cri.conf >/dev/null <<'SYSCTL_EOT'
net.bridge.bridge-nf-call-iptables = 1
net.bridge.bridge-nf-call-ip6tables = 1
net.ipv4.ip_forward = 1
SYSCTL_EOT
sudo sysctl -w net.ipv4.ip_forward=1 >/dev/null
if [ -e /proc/sys/net/bridge/bridge-nf-call-iptables ]; then
sudo sysctl -w net.bridge.bridge-nf-call-iptables=1 >/dev/null
sudo sysctl -w net.bridge.bridge-nf-call-ip6tables=1 >/dev/null
fi
if ! getent hosts "${self.triggers.node_name}" >/dev/null; then
printf '%s %s\n' "${self.triggers.host}" "${self.triggers.node_name}" | sudo tee -a /etc/hosts >/dev/null
fi
sudo mkdir -p /etc/containerd
if [ ! -f /etc/containerd/config.toml ]; then
@ -138,8 +209,25 @@ for path in $pv_dirs; do
sudo chmod 0775 "$path"
done
if [ -f /etc/kubernetes/kubelet.conf ] && ! curl -fsS --max-time 5 http://127.0.0.1:10248/healthz >/dev/null 2>&1; then
sudo kubeadm reset --force || true
sudo systemctl stop kubelet 2>/dev/null || true
sudo rm -rf /etc/kubernetes/ /var/lib/kubelet/ /var/lib/cni/ /etc/cni/net.d
fi
if [ ! -f /etc/kubernetes/kubelet.conf ] && [ -e /var/lib/kubelet/kubeadm-flags.env ]; then
sudo kubeadm reset --force || true
sudo systemctl stop kubelet 2>/dev/null || true
sudo rm -rf /etc/kubernetes/ /var/lib/kubelet/ /var/lib/cni/ /etc/cni/net.d
fi
if [ ! -f /etc/kubernetes/kubelet.conf ]; then
sudo ${data.external.kubeadm_join_command.result.cmd} --node-name=${self.triggers.node_name}
sudo systemctl stop kubelet 2>/dev/null || true
if ! sudo ${data.external.kubeadm_join_command.result.cmd} --node-name=${self.triggers.node_name}; then
sudo systemctl status kubelet --no-pager -l || true
sudo journalctl -u kubelet --no-pager -n 160 || true
exit 1
fi
fi
EOT
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