titan-iac/services/maintenance/scripts/disable_k3s_traefik.sh

65 lines
1.5 KiB
Bash

#!/usr/bin/env bash
set -euo pipefail
host_root="/host"
env_file="${host_root}/etc/systemd/system/k3s.service.env"
manifest_dir="${host_root}/var/lib/rancher/k3s/server/manifests"
changed=0
ensure_disable_flag() {
mkdir -p "$(dirname "${env_file}")"
if [ ! -f "${env_file}" ]; then
printf 'K3S_DISABLE=traefik\n' > "${env_file}"
changed=1
return
fi
if grep -q '^K3S_DISABLE=' "${env_file}"; then
current="$(grep '^K3S_DISABLE=' "${env_file}" | tail -n1 | cut -d= -f2-)"
current="$(printf '%s' "${current}" | sed 's/^\"//;s/\"$//' | tr -d ' ')"
if ! printf '%s' "${current}" | grep -qw "traefik"; then
if [ -z "${current}" ]; then
updated="traefik"
else
updated="${current},traefik"
fi
sed -i "s/^K3S_DISABLE=.*/K3S_DISABLE=${updated}/" "${env_file}"
changed=1
fi
else
printf '\nK3S_DISABLE=traefik\n' >> "${env_file}"
changed=1
fi
}
remove_manifest() {
if [ -d "${manifest_dir}" ] && ls "${manifest_dir}"/traefik* >/dev/null 2>&1; then
rm -f "${manifest_dir}"/traefik*.yaml "${manifest_dir}"/traefik*.yml
changed=1
fi
}
restart_k3s() {
node_name="$(cat "${host_root}/etc/hostname" 2>/dev/null || hostname)"
delay=0
case "${node_name}" in
*0b) delay=60 ;;
*0c) delay=120 ;;
esac
if [ "${delay}" -gt 0 ]; then
sleep "${delay}"
fi
chroot "${host_root}" /bin/systemctl daemon-reload || true
chroot "${host_root}" /bin/systemctl restart k3s
}
ensure_disable_flag
remove_manifest
if [ "${changed}" -eq 1 ]; then
restart_k3s
fi
sleep infinity