From f48a22c34540a1fd1a9cf2ec3310ece72f344c92 Mon Sep 17 00:00:00 2001
From: Christoph <ckubu@oopen.de>
Date: Mon, 25 Jun 2018 02:07:33 +0200
Subject: [PATCH] Add script 'check_zombies_php-cgi.sh'.

---
 check_zombies_php-cgi.sh | 132 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 132 insertions(+)
 create mode 100755 check_zombies_php-cgi.sh

diff --git a/check_zombies_php-cgi.sh b/check_zombies_php-cgi.sh
new file mode 100755
index 0000000..3dd5dcc
--- /dev/null
+++ b/check_zombies_php-cgi.sh
@@ -0,0 +1,132 @@
+#!/usr/bin/env bash
+
+
+#---------------------------------------
+#-----------------------------
+# Settings
+#-----------------------------
+#---------------------------------------
+
+# - Is this script running on terminal ?
+# -
+if [[ -t 1 ]] ; then
+      terminal=true
+      LOGGING=true
+else
+   terminal=false
+   LOGGING=false
+fi
+
+
+KILL_SIGNAL=HUP
+
+
+#---------------------------------------
+#-----------------------------
+# Base Function(s)
+#-----------------------------
+#---------------------------------------
+
+fatal(){
+   echo ""
+   echo -e "   [ Fatal ] $*"
+   echo ""
+   echo -e "\tScript terminated.."
+   echo ""
+   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 ]    $*"
+   echo ""
+}
+
+
+#---------------------------------------
+#-----------------------------
+# Check some prerequisites
+#-----------------------------
+#---------------------------------------
+
+if [ -z "`which basename`" ]; then
+   fatal 'It seems "basename" is not installed, but needed!'
+fi
+
+if [ -z "`which realpath`" ]; then
+   fatal 'It seems "realpath" is not installed, but needed!'
+fi
+
+php_cgi=$(realpath $(which php-cgi) 2>/dev/null ) > /dev/null 2>&1
+
+if [[ -z "$php_cgi" ]]; then
+   if [[ -x "/usr/local/php/bin/php-cgi" ]]; then
+      php_cgi="/usr/local/php/bin/php-cgi"
+   else
+      fatal "No 'php-cgi' binary found."
+   fi
+fi
+
+
+#---------------------------------------
+#-----------------------------
+# Jobhandling 
+#-----------------------------
+#---------------------------------------
+
+#LOCK_DIR=`mktemp -d`
+
+## - Remove lockdir when the script finishes, or when it receives a signal
+#trap 'rm -rf "$LOCK_DIR"' 0 2 15
+
+
+#---------------------------------------
+#-----------------------------
+#  Checking ..
+#-----------------------------
+#---------------------------------------
+
+
+if $LOGGING ; then
+   echo -e "\nChecking for zombie processes \"$php_cgi\" on \"`hostname -f`\".."
+fi
+if `ps -Ao"stat,command" | grep "$(basename $php_cgi)" | grep -v grep | grep -e '^[zZ]' > /dev/null 2>&1` ; then
+   warn "Found Zombie Processes \"$php_cgi\" on \"`hostname -f`\":\n"
+   ps -Ao"stat,user,pid,ppid,command" | grep "$(basename $php_cgi)" | grep -v grep | grep -e '^[zZ]'
+   membefore=`cat /proc/meminfo | grep Committed_AS | awk '{print $2}'`
+   info "Trying a graceful kill to the concerning parents with signal \"$KILL_SIGNAL\".."
+   ps -Ao"stat,pid,ppid,command" | grep "$(basename $php_cgi)" | grep -v grep | grep -e '^[zZ]' \
+      | awk '{ print $3 }' | sort -u | xargs --no-run-if-empty kill -$KILL_SIGNAL
+   if [ "$?" = "0" ];then
+      sleep 10
+      ok "Cleaning up zombie processes \"$php_cgi\" seems succsessfully finisched"
+      memafter=`cat /proc/meminfo | grep Committed_AS | awk '{print $2}'`
+      info "`expr $membefore - $memafter` KB RAM has been freed"
+   else
+      error "Cleaning up zombie processes \"$php_cgi\" failed!"
+   fi
+else
+   if $LOGGING ; then
+      ok "No zombie prossses found"
+   fi
+fi
+
+exit 0