Add check_postfix.sh

Fix minor error at check_webservice_load.sh

check_postfix.sh

@@ -0,0 +1,152 @@
+#!/usr/bin/env bash
+
+check_string_ps=""
+if [[ -x "/usr/lib/postfix/master" ]] ; then
+   check_string_ps="/usr/lib/postfix/master"
+elif [[ -x "/usr/libexec/postfix/master" ]] ; then
+   check_string_ps="/usr/libexec/postfix/master"
+fi
+
+postfix_init_script=""
+if [[ -x "/etc/init.d/postfix" ]] ; then
+   postfix_init_script="/etc/init.d/postfix"
+fi
+
+LOCK_DIR=`mktemp -d`
+
+
+#---------------------------------------
+#-----------------------------
+# Base Function(s)
+#-----------------------------
+#---------------------------------------
+
+fatal(){
+   echo ""
+   echo -e "   [ Fatal ] $*"
+   echo ""
+   echo -e "\tScript terminated.."
+   echo ""
+   rm -rf $LOCK_DIR
+   exit 1
+}
+
+error (){
+   echo ""
+   echo -e "   [ Error ] $*"
+   echo ""
+}
+
+warn (){
+   echo ""
+   echo -e "   [ Warn ]  $*"
+   echo ""
+}
+
+info (){
+   echo ""
+   echo -e "   [ Info ]  $*"
+   echo ""
+}
+
+ok (){
+   echo ""
+   echo -e "   [ Ok ]    $*"
+   echo ""
+}
+
+trim() {
+    local var="$*"
+    var="${var#"${var%%[![:space:]]*}"}"   # remove leading whitespace characters
+    var="${var%"${var##*[![:space:]]}"}"   # remove trailing whitespace characters
+    echo -n "$var"
+}
+
+
+#---------------------------------------
+#-----------------------------
+# Check some prerequisites
+#-----------------------------
+#---------------------------------------
+
+# - Running in a terminal?
+# -
+if [[ -t 1 ]] ; then
+      terminal=true
+      LOGGING=true
+else
+   terminal=false
+   LOGGING=false
+fi
+
+if [[ -z $check_string_ps ]]; then
+   fatal "$(basename $0): Postfix seems NOT to be installed"
+fi
+
+# - Systemd supported ?
+# -
+systemd=$(which systemd)
+systemctl=$(which systemctl)
+
+systemd_supported=false
+if [[ -n "$systemd" ]] && [[ -n "$systemctl" ]] ; then
+   systemd_supported=true
+else
+   if [[ ! -x $postfix_init_script ]]; then
+      fatal "$(basename $0): Missing Postfix Init-Script!"
+   fi
+fi
+
+
+#---------------------------------------
+#-----------------------------
+# Check if Postfix Mailservice is running
+#-----------------------------
+#---------------------------------------
+
+if $LOGGING ; then
+   echo -e "\n   Check if Postfix Mailservice is running.."
+   echo -e "   ========================================="
+fi
+if ! ps ax | grep -e "\ ${check_string_ps}" | grep -v grep > /dev/null ; then
+   error "Postfix Mailservice seems to be down! Trying to restart service now.."
+
+   if $systemd_supported ; then
+      $systemctl stop postfix > /dev/null 2> ${LOCK_DIR}/err_msg.log
+      if [[ $? -ne 0 ]]; then
+         error "$(cat ${LOCK_DIR}/err_msg.log)"
+      fi
+      sleep 10
+      $systemctl start postfix > /dev/null 2> ${LOCK_DIR}/err_msg.log
+      if [[ $? -ne 0 ]]; then
+         error "$(cat ${LOCK_DIR}/err_msg.log)"
+      fi
+   else
+      $postfix_init_script stop > /dev/null 2>&1
+      if [[ $? -ne 0 ]]; then
+         error "Stopping Postfix Mailservice failed!"
+      fi
+      sleep 10
+      $postfix_init_script start > /dev/null 2>&1
+      if [[ $? -ne 0 ]]; then
+         error "Starting Postfix Mailservice failed!"
+      fi
+   fi
+
+
+   if ! ps ax | grep -e "\ ${check_string_ps}" | grep -v grep > /dev/null ; then
+      error "Restarting Postfix Mailservice failed!"
+   else
+      ok "Postfix Mailservice is up and running."
+   fi
+         
+else
+   if $LOGGING ; then
+      ok "Postfix Mailservice is up and running."
+   fi
+fi
+
+rm -rf $LOCK_DIR
+exit 0
+
+   

check_webservice_load.sh

@@ -125,7 +125,7 @@ systemd=$(which systemd)
 systemctl=$(which systemctl)
 
 systemd_supported=false
-if [[ -n "$systemd" ]] && [[ -n "$systemd" ]] ; then
+if [[ -n "$systemd" ]] && [[ -n "$systemctl" ]] ; then
    systemd_supported=true
 fi