fix(scripts): allow rhel init script to be run by systemd

Author: ZNeumann

agent/scripts/init.rhel

@@ -10,6 +10,15 @@
 # processname: newrelic-daemon
 # config:      /etc/newrelic/newrelic.cfg
 #
+### BEGIN INIT INFO
+# Provides:          newrelic-daemon
+# Required-Start:    $all
+# Required-Stop:
+# Default-Start:     2 3 4 5
+# Default-Stop:	     0 1 6
+# Description: The New Relic Daemon is used by the New Relic PHP Agent to communicate
+#               with the New Relic Backend
+### END INIT INFO
 
 LANG=C
 NAME=newrelic-daemon
@@ -18,7 +27,11 @@ DESC="New Relic Daemon"
 #
 # Source function library.
 #
-. /etc/init.d/functions
+has_initd_functions=0
+if [ -f /etc/init.d/functions ]; then
+  . /etc/init.d/functions
+  has_initd_functions=1
+fi
 
 ulimit -n 2048 > /dev/null 2>&1
 
@@ -223,14 +236,18 @@ EOF
 
   if running ; then
     if [ -z "${NR_SILENT}" -a -z "${SILENT}" ]; then
-      success
-      echo
+      if [ $has_initd_functions -eq 1 ]; then
+        success
+        echo
+      fi
     fi
     return 0
   else
     if [ -z "${NR_SILENT}" -a -z "${SILENT}" ]; then
-      failure
-      echo
+      if [ $has_initd_functions -eq 1 ]; then
+        failure
+        echo
+      fi
     fi
     return 1
   fi
@@ -274,14 +291,18 @@ stop() {
 
     if running ; then
       if [ -z "${NR_SILENT}" -a -z "${SILENT}" ]; then
-        failure
-        echo
+        if [ $has_initd_functions -eq 1 ]; then
+          failure
+          echo
+        fi
       fi
       return 1
     else
       if [ -z "${NR_SILENT}" -a -z "${SILENT}" ]; then
-        success
-        echo
+        if [ $has_initd_functions -eq 1 ]; then
+          success
+          echo
+        fi
       fi
       return 0
     fi