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1#!/bin/sh
2# This script is designed to be used by Nagios. It checks for the availability of both Microsoft SQL Server 7 and 2000.
3#
4# Requirements:
5#
6# FreeTDS 6.0+ (http://www.freetds.org/)
7#
8# It was written by Tom De Blende (tom.deblende@village.uunet.be) in 2003.
9#
10# Version 1.0.
11# Version 1.1: Rewritten the initial script so that it not only works from the CLI but also from within Nagios. Always helpful...
12# Version 1.2: Grouped output so things look a bit better.
13# Version 2.0: Rewritten the plugin to support version 6.0+ of FreeTDS.
14# Removed sqsh requirement as version 6.0+ of FreeTDS now offers its own CLI client: tsql.
15# Older versions of FreeTDS are no longer supported.
16#
17#
18# You might want to change these values:
19
20tsqlcmd=`which tsql`
21catcmd=`which cat`
22grepcmd=`which grep`
23rmcmd=`which rm`
24mktempcmd=`which mktemp`
25wccmd=`which wc`
26sedcmd=`which sed`
27trcmd=`which tr`
28uniqcmd=`which uniq`
29
30###################################################################################################################
31
32hostname=$1
33usr=$2
34pswd=$3
35srv=$4
36
37
38if [ ! "$#" == "4" ]; then
39 echo -e "\nYou did not supply enough arguments. \nUsage: $0 <host> <username> <password> <version> \n \n$0 checks Microsoft SQL Server connectivity. It works with versions 7 and 2000.\n\nYou need a working version of FreeTDS (http://www.freetds.org/) and tsql (included in FreeTDS 6.0+) to connect to the SQL server. \nIt was written by Tom De Blende (tom.deblende@village.uunet.be) in 2003. \n\nExample:\n $0 dbserver sa f00bar 2000\n" && exit "3"
40
41elif [ $tsqlcmd == "" ]; then
42 echo -e "tsql not found! Please verify you have a working version of tsql (included in the FreeTDS version 6.0+) and enter the full path in the script." && exit "3"
43
44fi
45
46exit="3"
47
48
49# Creating the command file that contains the sql statement that has to be run on the SQL server.
50
51tmpfile=`$mktempcmd /tmp/$hostname.XXXXXX`
52
53if [ $srv == "7" ]; then
54 spid=7
55elif [ $srv == "2000" ]; then
56 spid=50
57else
58 echo -e "$srv is not a supported MS SQL Server version!" && exit "3"
59fi
60
61echo -e "select loginame from sysprocesses where spid > $spid order by loginame asc\ngo" > $tmpfile
62
63
64# Running tsql to get the results back.
65
66resultfile=`$mktempcmd /tmp/$hostname.XXXXXX`
67errorfile=`$mktempcmd /tmp/$hostname.XXXXXX`
68$tsqlcmd -S $hostname -U $usr -P $pswd < $tmpfile 2>$errorfile > $resultfile
69
70$grepcmd -q "Login failed for user" $errorfile
71
72if [ "$?" == "0" ]; then
73 $rmcmd -f $tmpfile $resultfile $errorfile;
74 echo CRITICAL - Could not make connection to SQL server. Login failed.;
75 exit 2;
76fi
77
78$grepcmd -q "There was a problem connecting to the server" $errorfile
79
80if [ "$?" == "0" ]; then
81 $rmcmd -f $tmpfile $resultfile $errorfile;
82 echo CRITICAL - Could not make connection to SQL server. Incorrect server name or SQL service not running.;
83 exit 2;
84fi
85
86resultfileln=`$catcmd $resultfile | $wccmd -l | $sedcmd 's/ //g'`
87
88if [ "$resultfileln" == "2" ]; then
89 $rmcmd -f $tmpfile $resultfile $errorfile;
90 echo CRITICAL - Could not make connection to SQL server. No data received from host.;
91 exit 2;
92else
93 nmbr=`$catcmd $resultfile | $grepcmd -v locale | $grepcmd -v charset| $grepcmd -v 1\> | $sedcmd '/^$/d' | $sedcmd 's/ //g' | $wccmd -l | sed 's/ //g'`
94 users=`$catcmd $resultfile | $grepcmd -v locale | $grepcmd -v charset| $grepcmd -v 1\> | $sedcmd '/^$/d' | $sedcmd 's/ //g' | $uniqcmd -c | $trcmd \\\n , | $sedcmd 's/,$/./g' | $sedcmd 's/,/, /g' | $sedcmd 's/ //g' | $trcmd \\\t " " | $sedcmd 's/ \./\./g' | $sedcmd 's/ ,/,/g'`
95 $rmcmd -f $tmpfile $resultfile;
96 echo "OK - MS SQL Server $srv has $nmbr user(s) connected: $users" | sed 's/: $/./g';
97 exit 0;
98fi
99
100# Cleaning up.
101
102$rmcmd -f $tmpfile $resultfile $errorfile
103echo $stdio
104exit $exit