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#!/usr/bin/perl |
#!/usr/bin/perl -w |
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# |
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# $Id$ |
# Monitor multiple postgresql databases on different hosts |
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# $Revision$ |
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# $Author$ |
# Dobrica Pavlinusic <dpavlin@rot13.org> |
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# http://www.rot13.org/~dpavlin/sysadm.html |
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#Usage: postresql.monitor [options] |
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# Based on postgresql.monitor 1.3 |
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# --database=<Databasename> indicates the database to which is connected |
# by Severin Luftensteiner <severin.luftensteiner@cubit.at> |
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# --username=<Username> DB-User which is used to connect to the DB |
# it's not limited to singe host and/or singe database. |
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# --password=<Password> DB-Password which is used to connect to the DB |
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# --host=<Databasehost> Host of the Database (optional,default=localhost) |
# Usage: pgsql.monitor username[:password]@host/database ... |
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# --port=<Portnumber> Port on which you want to connect (optional,default=5432) |
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# |
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# a monitor to determine if a PostgreSQL database server is operational |
# a monitor to determine if a PostgreSQL database server is operational |
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# |
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# Rather than use tcp.monitor to ensure that your SQL server is responding |
# Rather than use tcp.monitor to ensure that your SQL server is responding |
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# on the proper port, this attempts to connect to and list the databases |
# on the proper port, this attempts to connect to and count all tables |
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# on a given database server. |
# in given database on given server. |
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# You can use this monitor along with fping+args which also knows how to |
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# ping hosts in that user@host/dabase format. |
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# |
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# This monitor requires the perl5 DBI, DBD::mSQL and DBD::mysql modules, |
# This monitor requires the perl5 DBI, DBD::Pg modules, |
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# available from CPAN (http://www.cpan.org) |
# available from CPAN (http://www.cpan.org) |
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# |
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# Copyright (C) 2001, CubIT IT Solutions |
# Copyright (C) 2001, CubIT IT Solutions |
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# Written by Severin Luftensteiner <severin.luftensteiner@cubit.at> |
# Written by Severin Luftensteiner <severin.luftensteiner@cubit.at> |
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# Copyright (C) 2002, Dobrica Pavlinusic <dpavlin@rot13.org> |
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# |
# |
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# This program is free software; you can redistribute it and/or modify |
# This program is free software; you can redistribute it and/or modify |
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# it under the terms of the GNU General Public License as published by |
# it under the terms of the GNU General Public License as published by |
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# |
# |
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use DBI; |
use DBI; |
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use Getopt::Long; |
use strict; |
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GetOptions( \%options,"port=s", "username=s", "password=s", "database=s", "host=s" ); |
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# uncomment these two lines and provide suitable information if you don't |
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# want to pass sensitive information on the command line |
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$options{username} ||= "postgres"; |
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$options{password} ||= ""; |
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$mode="Pg"; |
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if ($options{host} eq ""){ |
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$options{"host"=>"localhost"}; |
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} |
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if ($options{port} eq ""){ |
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$options{"port"=>"5432"}; |
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} |
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if (($options{username} eq "") || (! defined $options{password}) || ($options{database} eq "")){ |
if (! @ARGV) { |
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print <<EOP1; |
print <<EOP1; |
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Usage: postresql.monitor [options] |
Usage: postresql.monitor username[:password]\@host/database ... |
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--database=<Databasename> indicates the database to which is connected |
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--username=<Username> DB-User which is used to connect to the DB |
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--password=<Password> DB-Password which is used to connect to the DB |
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--host=<Databasehost> Host of the Database (optional,default=localhost) |
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--port=<Portnumber> Port on which you want to connect (optional,default=5432) |
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EOP1 |
EOP1 |
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die(); |
exit 1; |
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} |
} |
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my @test_db; |
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my @failures; |
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foreach (@ARGV) { |
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if (m/^([^:]+):?([^\@]*)\@([^\/]+)\/?(.*)$/) { |
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push @test_db, { user => $1, passwd => $2, host => $3, database => $4 }; |
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} else { |
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push @failures, "Can't parse configuration: host '$_' not in username:password\@host/database format!"; |
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} |
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} |
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my( $dbh ) = DBI->connect( "DBI:$mode:dbname=$options{database};$options{host};$options{port}", $options{username}, $options{password} ); |
foreach (@test_db) { |
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if( ! $dbh ) { |
my $dbh = DBI->connect( "DBI:Pg:dbname=$_->{database};host=$_->{host};", $_->{user}, $_->{passwd} ); |
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push( @failures, "Could not connect to $mode server $host: " . $DBI::errstr ); |
if( ! $dbh ) { |
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push @failures,"Could not connect server $_->{host}, database $_->{database}: " . $DBI::errstr; |
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} else { |
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my $sth = $dbh->prepare("select count(*) from pg_tables where tablename not like 'pg_%'"); |
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if (! $sth->execute() ) { |
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push @failures, "Can't find out number of tables on $_->{host}, database $_->{database} " . $DBI::errstr; |
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} else { |
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my ($nr) = $sth->fetchrow_array; |
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if ($nr == 0) { |
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push @failures, "No tables on $_->{host}, database $_->{database} (turn off monitoring for this database?)"; |
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} |
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} |
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$sth->finish(); |
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} |
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if ($dbh) { |
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$dbh->disconnect(); |
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} |
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} |
} |
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if (@failures) { |
if (@failures) { |
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print join (", ", @failures), "\n"; |
print join (", ", @failures), "\n"; |
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exit 1; |
exit 1; |
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}; |
}; |
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if ($dbh){ |
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$dbh->disconnect(); |
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} |
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exit 0; |
exit 0; |