okd/roles/openshift_control_plane/files/scripts/docker/master-restart

#!/bin/bash
set -euo pipefail

# Restart the named component by stopping its base container.
if [[ -z "${1-}" ]]; then
  echo "A component name like 'api', 'etcd', or 'controllers' must be specified." 1>&2
  exit 1
fi

types=( "atomic-openshift" "origin" )
for type in "${types[@]}"; do
  if systemctl cat "${type}-master-${1}.service" &>/dev/null; then
    systemctl restart "${type}-master-${1}.service"
    exit 0
  fi
done

# TODO: move to cri-ctl
# TODO: short term hack for cri-o

# Get a child container name to wait for it to stop
child_container=$(docker ps -l -q --filter "label=io.kubernetes.container.name=${1}")

container=$(docker ps -l -q --filter "label=openshift.io/component=${1}" --filter "label=io.kubernetes.container.name=POD")
if [[ -z "${container}" ]]; then
  echo "Component ${1} is already stopped" 1>&2
  exit 0
fi
# Stop the pod
docker stop "${container}" --time 30 >/dev/null

# Wait for child container to change state
if [[ -z "${child_container}" ]]; then
  echo "Component ${1} is already stopped" 1>&2
  exit 0
fi
exec timeout 60 docker wait $child_container