Add script for graphing every VM at once

[invirt/scripts/munin.git] / web / all-usage.cgi

diff --git a/web/all-usage.cgi b/web/all-usage.cgi
new file mode 100755 (executable)
index 0000000..c1817bd
--- /dev/null
+++ b/web/all-usage.cgi
@@ -0,0 +1,84 @@
+#!/usr/bin/perl -wT
+
+use diagnostics;
+use constant GRAPH_DIR => "/var/lib/munin/xvm-prod-hosts.mit.edu";
+use CGI;
+use CGI::Carp qw(fatalsToBrowser);
+use RRDs;
+use File::Spec::Functions;
+
+our %graph_types = (cpu => "xen_cpu");
+our %formats = qw(svg image/svg+xml png image/png eps application/postscript pdf application/pdf);
+
+my @args = (qw(
+--font LEGEND:7:/usr/share/munin/VeraMono.ttf
+--font UNIT:7:/usr/share/munin/VeraMono.ttf
+--font AXIS:7:/usr/share/munin/VeraMono.ttf
+-
+--title), "Domain CPU usage", qw(
+--base 1000
+-r
+--lower-limit 0
+--vertical-label %
+--height 600
+--width 800
+--units-exponent 0));
+
+my $q = new CGI;
+
+my $format = $q->param("format") || "png";
+my $mime_type;
+if (exists($formats{$format})) {
+    $format =~ m|^(\w+)$| or die "Invalid format";
+    $format = $1;
+    $mime_type = $formats{$format};
+} else {
+    die "Invalid format";
+}
+
+push @args, "--imgformat", uc($format);
+
+my $days = $q->param("days") || "8";
+$days =~ m|^(\d+)$| or die "Invalid number of days specified";
+$days = int($1);
+
+my $type = $q->param("type") || "cpu";
+$type =~ m|^(\w+)$| or die "Invalid graph type";
+$type = $graph_types{$1} or die "Invalid graph type";
+
+my $path = catfile(GRAPH_DIR, "*-$type-????????_????_????_????_????????????-?.rrd");
+my @files = glob $path or die "No data found";
+
+push @args, "--start", "-".$days."d";
+
+my %uuids = map { m|(........_...._...._...._............)-.\.rrd$|; $1, 1 } @files;
+
+# Color list shamelessly stolen from munin-graph
+my @COLOUR = ("#22ff22", "#0022ff", "#ff0000", "#00aaaa", "#ff00ff",
+              "#ffa500", "#cc0000", "#0000cc", "#0080C0", "#8080C0", "#FF0080",
+              "#800080", "#688e23", "#408080", "#808000", "#000000", "#00FF00",
+              "#0080FF", "#FF8000", "#800000", "#FB31FB");
+my $color_index = 0;
+
+foreach my $uuid (keys %uuids) {
+  my @uuid_files = grep { m|$uuid-.\.rrd$| } @files;
+  foreach my $i (0..$#uuid_files) {
+    $uuid_files[$i] =~ m|^([^:]+)$|;
+    push @args, "DEF:odata_${uuid}_$i=$1:42:AVERAGE";
+    push @args, "CDEF:data_${uuid}_$i=odata_${uuid}_$i,UN,0,odata_${uuid}_$i,IF,10000,/";
+  }
+  push @args, "CDEF:total_${uuid}=0,".join(",+,", map {"data_${uuid}_$_"} 0..$#uuid_files).",+";
+  push @args, "AREA:total_${uuid}".$COLOUR[($color_index++)%@COLOUR]."::STACK";
+  # print STDERR "VM $uuid: @uuid_files\n";
+}
+
+$ENV{"PATH"} = "/usr/local/bin:/usr/bin:/bin";
+
+print $q->header(-type=>$mime_type);
+$|=1;
+
+{
+    use Data::Dumper;
+    print STDERR "XVM usage: ", Dumper(\@args);
+}
+RRDs::graph (@args);