new_version_bc => [0, 'Checks if a newer version of Bucardo is available.'],
new_version_cp => [0, 'Checks if a newer version of check_postgres.pl is available.'],
new_version_pg => [0, 'Checks if a newer version of Postgres is available.'],
+ pgbouncer_checksum => [0, 'Check that no pgbouncer settings have changed since the last check.'],
prepared_txns => [1, 'Checks number and age of prepared transactions.'],
query_runtime => [0, 'Check how long a specific query takes to run.'],
query_time => [1, 'Checks the maximum running time of current queries.'],
$VERBOSE >= 2 and warn qq{psql=$PSQL version=$psql_version\n};
$opt{defaultdb} = $psql_version >= 8.0 ? 'postgres' : 'template1';
+$opt{defaultdb} = 'pgbouncer' if $action eq 'pgbouncer_checksum';
sub add_response {
## Make sure Slony is behaving
check_slony_status() if $action eq 'slony_status';
+## Verify that the pgbouncer settings are what we think they should be
+check_pgbouncer_checksum() if $action eq 'pgbouncer_checksum';
+
##
## Everything past here does not hit a Postgres database
##
my $dbtimeout = $timeout * 1000;
alarm 0;
- $string = "BEGIN;SET statement_timeout=$dbtimeout;COMMIT;$string";
+ if ($action ne 'pgbouncer_checksum') {
+ $string = "BEGIN;SET statement_timeout=$dbtimeout;COMMIT;$string";
+ }
push @args, '-c', $string;
my $info = run_command($SQL, {regex => qr[\d+] } );
$db = $info->{db}[0];
- if ($db->{slurp} !~ /^\s*(\d+)/) {
+ if ($db->{slurp} !~ /^\s*\d+/) {
add_unknown msg('slony-nonumber');
return;
}
} ## end of show_dbstats
+sub check_pgbouncer_checksum {
+
+ ## Verify the checksum of all pgbouncer settings
+ ## Supports: Nagios, MRTG
+ ## Not that the connection will be done on the pgbouncer database
+ ## One of warning or critical must be given (but not both)
+ ## It should run one time to find out the expected checksum
+ ## You can use --critical="0" to find out the checksum
+ ## You can include or exclude settings as well
+ ## Example:
+ ## check_postgres_pgbouncer_checksum --critical="4e7ba68eb88915d3d1a36b2009da4acd"
+
+ my ($warning, $critical) = validate_range({type => 'checksum', onlyone => 1});
+
+ eval {
+ require Digest::MD5;
+ };
+ if ($@) {
+ ndie msg('checksum-nomd');
+ }
+
+ $SQL = 'SHOW CONFIG';
+ my $info = run_command($SQL, { regex => qr[log_pooler_errors] });
+
+ for $db (@{$info->{db}}) {
+
+ (my $string = $db->{slurp}) =~ s/\s+$/\n/;
+
+ my $newstring = '';
+ SLURP: for my $line (split /\n/ => $string) {
+ $line =~ /^\s*(\w+)/ or ndie msg('unknown-error');
+ my $name = $1;
+ next SLURP if skip_item($name);
+ $newstring .= "$line\n";
+ }
+ if (! length $newstring) {
+ add_unknown msg('no-match-set');
+ }
+
+ my $checksum = Digest::MD5::md5_hex($newstring);
+
+ my $msg = msg('checksum-msg', $checksum);
+ if ($MRTG) {
+ $opt{mrtg} or ndie msg('checksum-nomrtg');
+ do_mrtg({one => $opt{mrtg} eq $checksum ? 1 : 0, msg => $checksum});
+ }
+ if ($critical and $critical ne $checksum) {
+ add_critical $msg;
+ }
+ elsif ($warning and $warning ne $checksum) {
+ add_warning $msg;
+ }
+ elsif (!$critical and !$warning) {
+ add_unknown $msg;
+ }
+ else {
+ add_ok $msg;
+ }
+ }
+
+ return;
+
+} ## end of check_pgbouncer_checksum
+
+
=pod
=head1 NAME
replication system for Postgres: see http://bucardo.org for more information).
See also the information on the C<--get_method> option.
+=head2 B<pgbouncer_checksum>
+
+(C<symlink: check_postgres_pgbouncer_checksum>) Checks that all the
+pgBouncer settings are the same as last time you checked.
+This is done by generating a checksum of a sorted list of setting names and
+their values. Note that you shouldn't specify the database name, it will
+automatically default to pgbouncer. Either the I<--warning> or the I<--critical> option
+should be given, but not both. The value of each one is the checksum, a
+32-character hexadecimal value. You can run with the special C<--critical=0> option
+to find out an existing checksum.
+
+This action requires the Digest::MD5 module.
+
+Example 1: Find the initial checksum for pgbouncer configuration on port 6432 using the default user (usually postgres)
+
+ check_postgres_pgbouncer_checksum --port=6432 --critical=0
+
+Example 2: Make sure no settings have changed and warn if so, using the checksum from above.
+
+ check_postgres_pgbouncer_checksum --port=6432 --warning=cd2f3b5e129dc2b4f5c0f6d8d2e64231
+
+For MRTG output, returns a 1 or 0 indicating success of failure of the checksum to match. A
+checksum must be provided as the C<--mrtg> argument. The fourth line always gives the
+current checksum.
+
=head2 B<prepared_txns>
(C<symlink: check_postgres_prepared_txns>) Check on the age of any existing prepared transactions.
=item B<Version 2.15.0>
+ Add the "pgbouncer_checksum" action (Guillaume Lelarge)
Fix regex to work on WIN32 for check_fsm_relations and check_fsm_pages (Luke Koops)
Don't apply a LIMIT when using --exclude on the bloat action (Marti Raudsepp)
Change the output of query_time to show pid,user,port, and address (Giles Westwood)
projects / check_postgres.git / commitdiff