have written a check_sendmail in Solaris plugin

[Alexander Harvey]

Hi All,

I've just written a check_sendmail plugin shell script for Solaris; I'm
wondering if anyone has any thoughts for improving it (be as pedantic as you
like), problems with it, etc. Alternatively, if anyone wants to use it
themselves.

To use the plugin via nrpe

** you must give the nagios user on the remote host
** you must give the nagios user sudo access to run this script as root
without password

Kind Regards,
Alex

#!/bin/ksh
# check_sendmail
# author: alex harvey
# email: alexh19740110 at gmail.com

die=false
OS=`uname -r`

# first check status according to SMF if we're in Solaris 10
if [ "$OS" == "5.10" ]; then
   svcs -l sendmail >|/tmp/check_sendmail.tmp.1 2>&1
   smf_enabled=`cat /tmp/check_sendmail.tmp.1 | awk '{if ($1 == "enabled")
print $2}'`
   smf_state=`cat /tmp/check_sendmail.tmp.1 | awk '{if ($1 == "state") print
$2}'`
   if [ "$smf_enabled" == "false" ]; then
      echo WARNING [ Disabled by SMF ]
      exit 1
   fi

   # $smf_enabled must be "true"
   if [ "$smf_state" != "online" ]; then
      echo WARNING [ SMF reports state $smf_state ]
      exit 1
   fi

   # $smf_enabled must be "true" and $smf_state must be "online"
   sendmail_pid_file=/var/run/sendmail.pid
   client_pid_file=/var/spool/clientmqueue/sm-client.pid
   if [ ! -e $sendmail_pid_file ]; then
      messpart1="and $sendmail_pid_file "
      die=true
   fi
   if [ ! -e $client_pid_file ]; then
      messpart1="$messpart1 and $client_pid_file"
      die=true
   fi
   messpart1=`echo $messpart1 | sed -e 's/^and //'`
   mess1="$messpart1 not found!"
   [ $die == "true" ] && echo CRITICAL [ $mess1 ] && exit 2
fi

# now check that both processes are running
sendmail_pid=`cat /var/run/sendmail.pid | head -1`
sendmail_cmd=`cat /var/run/sendmail.pid | tail -1`
client_pid=`cat /var/spool/clientmqueue/sm-client.pid | head -1`
client_cmd=`cat /var/spool/clientmqueue/sm-client.pid | tail -1`
ps -ef | egrep "${sendmail_pid}.*${sendmail_cmd}" >/dev/null 2>&1
RC1=$?
ps -ef | egrep "${client_pid}.*${client_cmd}" >/dev/null 2>&1
RC2=$?
if [ $RC1 -ne 0 ]; then
   messpart2="and daemon "
   die=true
fi
if [ $RC2 -ne 0 ]; then
   messpart2="$messpart2 and client"
   die=true
fi
messpart2=`echo $messpart2 | sed -e 's/^and //'`
mess2="sendmail $messpart2 is not running!"
[ $die == "true" ] && echo CRITICAL [ $mess2 ] && exit 2

# otherwise exit OK
echo OK && exit 0
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