use warnings;
use strict;
use autodie;
+use POSIX;
+use Time::HiRes qw(time sleep);
my $DEBUG = $ENV{DEBUG} || 0;
-my $INFLUX = 'http://10.60.0.89:8186/write';
+my $INFLUX = $ENV{INFLUX} || 'http://10.80.3.89:8086/write?db=gnt';
+my $INTERVAL = $ENV{INTERVAL} || 1;
+my $DC = $ENV{DC};
+my $RACK = $ENV{RACK};
-my $hostname = `hostname -s`;
-chomp $hostname;
+my $node = `hostname -s`;
+chomp $node;
+
+my $location = '';
+$location .= qq{,dc=$DC} if $DC;
+$location .= qq{,rack=$RACK} if $RACK;
+
+warn $0 = "gnt-monitor\@$node$location $INFLUX $INTERVAL $DEBUG";
use Data::Dump;
sub XXX { $DEBUG ? warn "XXX ",Data::Dump::dump( @_ ) : {} };
my $stat;
+my $last;
+
+while(1) {
+
+my $skip;
+
+my $begin_t = time();
+my $t = int( time() * 1000_000_000 );
+
+foreach my $instance ( glob '/var/run/ganeti/kvm-hypervisor/pid/*' ) {
+
+ open(my $fh, '<', $instance);
+ my $pid = <$fh>; chomp $pid;
+
+ $instance =~ s{^.*/}{};
+
+ if ( ! -d "/proc/$pid" ) {
+ $skip->{$instance}++;
+ XXX $skip;
+ next;
+ }
+
+ my $vcpu = $last->{$instance}->{vcpu};
+
+ if ( ! $vcpu ) {
+ foreach my $fd ( glob "/proc/$pid/fd/*" ) {
+ $vcpu++ if -l $fd && readlink($fd) =~ m/kvm-vcpu/;
+ }
+
+ $last->{$instance}->{vcpu} = $vcpu;
+ }
+
+ # https://www.kernel.org/doc/Documentation/filesystems/proc.txt
+ open($fh, '<', "/proc/$pid/stat");
+ my $line = <$fh>; chomp $line;
+ my $gtime = (split(/\s+/,$line))[42]; # guest time of the task in jiffies
+
+ if ( my $last_gtime = $last->{$instance}->{gtime} ) {
+ my $clock_ticks = POSIX::sysconf( &POSIX::_SC_CLK_TCK ); # clock ticks per second
+
+ my $cpu = ( ( $gtime - $last_gtime ) * 100 ) / ( $clock_ticks * $vcpu ) / $INTERVAL;
+ $stat->{$instance}->{cpu} = $cpu;
+ $stat->{$instance}->{ticks} = ($gtime - $last_gtime) / $INTERVAL;
+ }
+
+ $last->{$instance}->{gtime} = $gtime;
+}
+
foreach my $glob ( glob '/var/run/ganeti/instance-disks/*' ) {
my ( $instance, $disk ) = split(/:/,$glob,2);
- my $dev = readlink $glob;
$instance =~ s{^.*/}{};
+
+ next unless exists $stat->{$instance};
+
+ my $dev = readlink $glob;
$dev =~ s{^.*dev/}{};
- $stat->{$instance}->{disk}->[$disk]->{dev} = $dev;
+
+ if ( ! -e "/sys/class/block/$dev" ) {
+ $skip->{$instance}++;
+ XXX $skip;
+ next;
+ }
+
open( my $fh, '<', "/sys/class/block/$dev/stat" );
my $v = <$fh>; chomp $v; $v =~ s/^\s+//;
my @s = split(/\s+/, $v );
# https://www.kernel.org/doc/Documentation/block/stat.txt
- $stat->{$instance}->{disk}->[$disk]->{read_io} = $s[0];
- $stat->{$instance}->{disk}->[$disk]->{read_bytes} = $s[2] * 512;
- $stat->{$instance}->{disk}->[$disk]->{read_wait} = $s[3];
- $stat->{$instance}->{disk}->[$disk]->{write_io} = $s[4];
- $stat->{$instance}->{disk}->[$disk]->{write_bytes} = $s[6] * 512;
- $stat->{$instance}->{disk}->[$disk]->{write_wait} = $s[7];
+ my $d = {
+ read_io => $s[0] / $INTERVAL,
+ read_bytes => $s[2] * 512 / $INTERVAL,
+ read_wait => $s[3] / $INTERVAL,
+ write_io => $s[4] / $INTERVAL,
+ write_bytes => $s[6] * 512 / $INTERVAL,
+ write_wait => $s[7] / $INTERVAL,
+ };
+ if ( my $l = $last->{$instance}->{disk}->[$disk] ) {
+ my $delta;
+ $delta->{$_} = $d->{$_} - $l->{$_} foreach keys %$d;
+ $stat->{$instance}->{disk}->[$disk] = $delta;
+ $stat->{$instance}->{disk}->[$disk]->{dev} = $dev;
+ $stat->{$instance}->{disk}->[$disk]->{disk} = $disk;
+ }
+ $last->{$instance}->{disk}->[$disk] = $d;
+
}
-foreach my $instance ( glob '/var/run/ganeti/kvm-hypervisor/nic/*' ) {
- foreach my $nic ( glob "$instance/*" ) {
- open(my $fh, '<', "$nic");
+foreach my $full_instance ( glob '/var/run/ganeti/kvm-hypervisor/nic/*' ) {
+ my $instance = $full_instance;
+ $instance =~ s{^.*/}{};
+ next unless exists $stat->{$instance};
+
+ foreach my $nic ( glob "$full_instance/*" ) {
+ open(my $fh, '<', $nic);
my $dev = <$fh>;
+
+ next unless -e "/sys/class/net/$dev";
+
$nic =~ s{^.*/}{};
-XXX $nic;
- $instance =~ s{^.*/}{};
- $stat->{$instance}->{nic}->[$nic]->{dev} = $dev;
- my $vlan = readlink "/sys/class/net/$dev/master";
- $vlan =~ s/^.*br//;
- $stat->{$instance}->{nic}->[$nic]->{vlan} = $vlan;
+
+ my $d;
+
foreach my $f (qw( rx_bytes tx_bytes rx_packets tx_packets )) {
open( my $fh, '<', "/sys/class/net/$dev/statistics/$f" );
my $v = <$fh>; chomp $v;
- $stat->{$instance}->{nic}->[$nic]->{$f} = $v;
+ $d->{$f} = $v / $INTERVAL;
+ }
+ if ( my $l = $last->{$instance}->{nic}->[$nic] ) {
+ $stat->{$instance}->{nic}->[$nic]->{$_} = $d->{$_} - $l->{$_} foreach keys %$d;
+ $stat->{$instance}->{nic}->[$nic]->{dev} = $dev;
+ if ( -e "/sys/class/net/$dev/master" ) {
+ my $vlan = readlink "/sys/class/net/$dev/master";
+ $vlan =~ s/^.*br//;
+ $stat->{$instance}->{nic}->[$nic]->{vlan} = $vlan;
+ }
}
+ $last->{$instance}->{nic}->[$nic] = $d;
+
+ }
+}
+
+#XXX $stat;
+#XXX $last;
+
+sub dump4influx {
+ my $hash = shift;
+ my @v;
+ foreach my $k ( keys %$hash ) {
+ my $v = $hash->{$k};
+ my ( $d, $s ) = $v =~ m/^\d+(\.\d+)?$/i ? ( '', '' ) : # float
+ ( '"' ,'' ) ; # string
+
+ push @v, "$k=$d$v$d$s";
+ }
+ my $i = join(',', @v);
+ return $i;
+}
+
+open(my $fh, '>', '/dev/shm/gnt-monitor.influx');
+
+foreach my $instance ( keys %$stat ) {
+
+ next if $skip->{$instance};
+
+ print $fh qq{ganeti_cpu,node=$node,instance=$instance$location cpu=$stat->{$instance}->{cpu},ticks=$stat->{$instance}->{ticks} $t\n};
+
+ foreach my $disk ( @{ $stat->{$instance}->{disk} } ) {
+ print $fh qq{ganeti_disk,node=$node,instance=$instance$location },dump4influx( $disk ), " $t\n";
+ }
+
+ foreach my $nic ( @{ $stat->{$instance}->{nic} } ) {
+ my $vlan = delete $nic->{vlan};
+ $vlan = 0 unless defined $vlan;
+ print $fh qq{ganeti_nic,node=$node,instance=$instance,vlan=${vlan}$location },dump4influx( $nic ), " $t\n";
}
+
+}
+
+close($fh);
+
+if ( system( 'curl', '-s', '-XPOST', $INFLUX, '--data-binary', '@/dev/shm/gnt-monitor.influx' ) == 0 ) {
+} else {
+ rename '/dev/shm/gnt-monitor.influx', '/dev/shm/gnt-monitor.influx.bug.' . scalar glob '/dev/shm/gnt-monitor.influx.bug.*';
+ warn "curl failed: $? $!";
}
-XXX $stat;
+my $dt = time() - $begin_t;
+sleep $INTERVAL - $dt if $dt > 0 && $dt < $INTERVAL;
+} #/while
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