Fixed concurrent run of helm-tiller: save pid to file in temporary di…

…rectory, kill tiller by pid file

scripts/tiller.sh

@@ -155,14 +155,28 @@ tiller_env() {
   fi
 }
 
+tiller_pid_file() {
+  echo "$TMPDIR/helm-tiller-${HELM_TILLER_PORT}.pid"
+}
+
+tiller_save_pid() {
+  local tiller_pid="$1"
+  local tiller_pid_file
+  tiller_pid_file=$(tiller_pid_file)
+  echo "$tiller_pid" > "$tiller_pid_file"
+}
+
 start_tiller() {
   tiller_env
   PROBE_LISTEN_FLAG="--probe-listen=127.0.0.1:${HELM_TILLER_PROBE_PORT}"
   # check if we have a version that supports the --probe-listen flag
   ./bin/tiller --help 2>&1 | grep probe-listen > /dev/null || PROBE_LISTEN_FLAG=""
   # shellcheck disable=SC2188
-  ( ./bin/tiller --storage=${HELM_TILLER_STORAGE} --listen=127.0.0.1:${HELM_TILLER_PORT} ${PROBE_LISTEN_FLAG} --history-max=${HELM_TILLER_HISTORY_MAX} & 2>"${HELM_TILLER_LOGS_DIR}")
-  if [[ "${HELM_TILLER_SILENT}" == "false" ]]; then
+  (
+    ./bin/tiller --storage=${HELM_TILLER_STORAGE} --listen=127.0.0.1:${HELM_TILLER_PORT} ${PROBE_LISTEN_FLAG} --history-max=${HELM_TILLER_HISTORY_MAX} &
+     tiller_save_pid "$!"
+  ) 2>"${HELM_TILLER_LOGS_DIR}"
+ if [[ "${HELM_TILLER_SILENT}" == "false" ]]; then
     echo "Tiller namespace: $TILLER_NAMESPACE"
   fi
 }
@@ -176,7 +190,16 @@ stop_tiller() {
   if [[ "${HELM_TILLER_SILENT}" == "false" ]]; then
     echo "Stopping Tiller..."
   fi
-  pkill -9 -f ./bin/tiller
+  local tiller_pid_file
+  tiller_pid_file=$(tiller_pid_file)
+  if ! [ -f "$tiller_pid_file" ]; then
+      echo "can not find tiller pid file $tiller_pid_file" 1>&2
+      exit 1
+  fi
+  local tiller_pid
+  tiller_pid="$(cat "$tiller_pid_file")"
+  kill -9 "$tiller_pid"
+  rm -f "$tiller_pid_file"
 }
 
 COMMAND=$1