diff options
Diffstat (limited to 'ctdb/utils/nagios')
| -rw-r--r-- | ctdb/utils/nagios/README | 56 | ||||
| -rwxr-xr-x | ctdb/utils/nagios/check_ctdb | 279 |
2 files changed, 335 insertions, 0 deletions
diff --git a/ctdb/utils/nagios/README b/ctdb/utils/nagios/README new file mode 100644 index 0000000..99fa6dc --- /dev/null +++ b/ctdb/utils/nagios/README @@ -0,0 +1,56 @@ +check_ctdb 0.3 + +This nagios plugin is free software, and comes with ABSOLUTELY NO WARRANTY. +It may be used, redistributed and/or modified under the terms of the GNU +General Public Licence (see http://www.fsf.org/licensing/licenses/gpl.txt). + +CTDB plugin + +Usage: check_ctdb -i <info> + [ -t <timeout> ] [ -w <warn_range> ] [ -c <crit_range> ] + [ -H <host> ] [-s] [ -l <login_name> ] + [ -V ] [ -h ] + + -?, --usage + Print usage information + -h, --help + Print detailed help screen + -V, --version + Print version information + --extra-opts=[section][@file] + Read options from an ini file. See http://nagiosplugins.org/extra-opts for usage + -i, --info=<info> + Information: One of scriptstatus or ping. + -H, --hostname=<login_name> + Host name or IP Address. + -s, --sudo + Use sudo. + -l, --login=<host> + The user to log in as on the remote machine. + -w, --warning=THRESHOLD + Warning threshold. See + http://nagiosplug.sourceforge.net/developer-guidelines.html#THRESHOLDFORMAT + for the threshold format. + -c, --critical=THRESHOLD + Critical threshold. See + http://nagiosplug.sourceforge.net/developer-guidelines.html#THRESHOLDFORMAT + for the threshold format. + -t, --timeout=INTEGER + Seconds before plugin times out (default: 30) + -v, --verbose + Show details for command-line debugging (can repeat up to 3 times) +Supported commands: + * scriptstatus : + check the ctdb scriptstatus command and return CRITICAL if one of the + scripts fails. + Perfdata count the number of scripts by state (ok, disabled, error, + total). + * ping : + check the ctdb ping command. + Perfdata count the number of nodes, the total ping time and the number + of clients. + Thresholds are checked against the number of nodes. + + +Copyright (c) 2011 Nantes Metropole + diff --git a/ctdb/utils/nagios/check_ctdb b/ctdb/utils/nagios/check_ctdb new file mode 100755 index 0000000..7803f9a --- /dev/null +++ b/ctdb/utils/nagios/check_ctdb @@ -0,0 +1,279 @@ +#!/usr/bin/perl -w +# Nagios plugin to monitor CTDB (Clustered Trivial Database) +# +# License: GPL +# Copyright (c) 2011 Nantes Metropole +# Author: Mathieu Parent <math.parent@gmail.com> +# Contributor(s): - +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License version 2 as +# published by the Free Software Foundation. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see <http://www.gnu.org/licenses/>. +# + +use strict; +use warnings; +use vars qw($PROGNAME $VERSION $output $values $result); +use Nagios::Plugin; +use File::Basename; + +$PROGNAME = basename($0); +$VERSION = '0.4'; + +my $np = Nagios::Plugin->new( + usage => "Usage: %s -i <info>\n" + . " [ -t <timeout> ] [ -w <warn_range> ] [ -c <crit_range> ]\n" + . " [ -H <host> ] [-s] [ -l <login_name> ]\n" + . ' [ -V ] [ -h ]', + version => $VERSION, + plugin => $PROGNAME, + shortname => uc($PROGNAME), + blurb => 'CTDB plugin', + extra => "Supported commands:\n" + . " * scriptstatus :\n" + . " check the ctdb scriptstatus command and return CRITICAL if one of the\n" + . " scripts fails.\n" + . " Perfdata count the number of scripts by state (ok, disabled, error,\n" + . " total).\n" + . " * ping :\n" + . " check the ctdb ping command.\n" + . " Perfdata count the number of nodes, the total ping time and the number\n" + . " of clients.\n" + . " Thresholds are checked against the number of nodes.\n" + . "\n\nCopyright (c) 2011 Nantes Metropole", + timeout => 30, +); + +$np->add_arg( + spec => 'info|i=s', + help => "-i, --info=<info>\n" + . ' Information: One of scriptstatus or ping.', + required => 1, +); + +$np->add_arg( + spec => 'hostname|H=s', + help => "-H, --hostname=<login_name>\n" + . ' Host name or IP Address.', + required => 0, +); + +$np->add_arg( + spec => 'sudo|s', + help => "-s, --sudo\n" + . ' Use sudo.', + required => 0, +); + +$np->add_arg( + spec => 'login|l=s', + help => "-l, --login=<host>\n" + . ' The user to log in as on the remote machine.', + required => 0, +); + +$np->add_arg( + spec => 'warning|w=s', + help => "-w, --warning=THRESHOLD\n" + . " Warning threshold. See\n" + . " http://nagiosplug.sourceforge.net/developer-guidelines.html#THRESHOLDFORMAT\n" + . ' for the threshold format.', + required => 0, +); + +$np->add_arg( + spec => 'critical|c=s', + help => "-c, --critical=THRESHOLD\n" + . " Critical threshold. See\n" + . " http://nagiosplug.sourceforge.net/developer-guidelines.html#THRESHOLDFORMAT\n" + . ' for the threshold format.', + required => 0, +); + +$np->getopts; + +my $info = $np->opts->info; +my $hostname = $np->opts->hostname; +my $login = $np->opts->login; +my $sudo = $np->opts->sudo; +my $warning = $np->opts->warning; +my $critical = $np->opts->critical; +my $percw; +my $percc; + +$output = ""; + +if (defined($critical)) +{ + ($percc, $critical) = check_percantage($critical); + $critical = undef if ($critical eq ''); +} + +if (defined($warning)) +{ + ($percw, $warning) = check_percantage($warning); + $warning = undef if ($warning eq ''); +} + +$np->set_thresholds(critical => $critical, warning => $warning); + +my $stderr; + +sub safe_open_command { + unshift @_, "sudo" if $sudo; + if ($hostname) { + unshift @_, $hostname; + unshift @_, "-l", $login if $login; + unshift @_, "ssh"; + } + open(OLDERR, ">&", \*STDERR) or die "Can't dup STDERR: $!"; + $stderr = ""; + close STDERR; + open(STDERR, ">>", \$stderr) or die "Can't open STDERR: $!"; + if ($np->opts->verbose) { + print "Executing: @_\n"; + } + if (!open(PIPE, '-|', @_)) { + $result = CRITICAL; + $output .= "Cannot open command '@_': $! ($stderr). "; + # restore STDERR + open(STDERR, ">", \*OLDERR) or die "Can't dup OLDERR: $!"; + } +} + +sub safe_close_command { + close(PIPE); + + if ($? == -1) { + $result = CRITICAL; + $output .= "failed to execute: $!. "; + } elsif ($? & 127) { + $result = CRITICAL; + $output .= sprintf("child died with signal %d, %s coredump. ", + ($? & 127), ($? & 128) ? 'with' : 'without'); + } elsif ($? >> 8) { + if (($? >> 8) == 255) { + # ctdb returns -1=255 if any node is disconnected + $result = WARNING; + $output .= sprintf("child exited with value %d. ", $? >> 8) if $output eq ""; + } else { + $result = CRITICAL; + $output .= sprintf("child exited with value %d. ", $? >> 8); + } + } + # restore STDERR + open(STDERR, ">&OLDERR") or die "Can't dup OLDERR: $!"; +} + +# main : + +if ($info eq "scriptstatus") { + $result = OK; + safe_open_command('ctdb', '-X', 'scriptstatus'); + if ($result == OK) { + my $script_count = 0; + my $ok_script_count = 0; + my $disabled_script_count = 0; + my $error_script_count = 0; + while (<PIPE>) { + next if $. == 1; # Header + $script_count++; + chop; + my ($col0, $type, $name, $code, $status, $start, $end, @error) = split("|"); + if ($col0 ne '') { + # Old version, before 30 Aug 2011 and commit a779d83a6213 + ($type, $name, $code, $status, $start, $end, @error) = ($col0, $type, $name, $code, $status, $start, $end, @error); + } + my $error = join(':', @error); + if ($error ne "") { + $output = "$output ;; " if $output; + $output = "$output$name ($status=$code): $error "; + if ($result != CRITICAL) { + $result = WARNING; + } + } + if ($status eq "OK") { + $ok_script_count++; + next; + } + if ($status eq "DISABLED") { + $disabled_script_count++; + next; + } + $error_script_count++; + $result = WARNING; + } + safe_close_command(); + $np->add_perfdata(label => "ok", value => $ok_script_count, uom => '', + min => 0, max => $script_count); + $np->add_perfdata(label => "disabled", value => $disabled_script_count, uom => '', + min => 0, max => $script_count); + $np->add_perfdata(label => "error", value => $error_script_count, uom => '', + min => 0, max => $script_count, warning => '0', critical => '0'); + $np->add_perfdata(label => "total", value => $script_count, uom => '', + min => 0, max => $script_count); + if ($result == OK) { + $result = $np->check_threshold(check => $error_script_count, warning => '0', critical => '0'); + } + } + $np->nagios_exit($result, $output); +} elsif ($info eq "ping") { + # Get expected nodes count + $result = OK; + safe_open_command('cat', '/etc/ctdb/nodes'); + 1 while( <PIPE> ); + my $max_nodes_count = $.; + safe_close_command(); + # ctdb ping + $result = OK; + safe_open_command('ctdb', '-n', 'all', 'ping'); + if ($result == OK) { + my $nodes_count = 0; + my $time_total = 0.0; + my $clients_count = 0; + while (<PIPE>) { + chop; + if ($_ =~ /^response from (\d+) time=([0-9.]+) sec \((\d+) clients\)$/) { + my ($node_id, $time, $clients) = ($1,$2,$3); + $nodes_count += 1; + $time_total += $time; + $clients_count += $clients; + } elsif ($_ =~ /^Unable to get ping response from node (\d+)$/) { + # + } else { + $result = CRITICAL; + $output .= "'$_' doesn't match regexp. " + } + } + $output .= sprintf("%d missing nodes. ", $max_nodes_count - $nodes_count) if $nodes_count < $max_nodes_count; + safe_close_command(); + $np->add_perfdata(label => "nodes", value => $nodes_count, uom => '', + min => 0, max => $max_nodes_count, warning => $warning, critical => $critical); + $np->add_perfdata(label => "ping_time", value => $time_total, uom => 's', + min => 0, max => undef); + $np->add_perfdata(label => "clients", value => $clients_count, uom => '', + min => 0, max => undef); + if ($result == OK) { + $result = $np->check_threshold(check => $nodes_count); + } + } + $np->nagios_exit($result, $output); +} else { + $np->nagios_exit(UNKNOWN, "Unknown command: '$info'"); +} + +sub check_percantage +{ + my ($number) = shift(@_); + my $perc = $number =~ s/\%//; + return ($perc, $number); +} + |