7 my $DEBUG = $ENV{DEBUG} || 0;
8 my $INFLUX = 'http://10.60.0.89:8186/write';
9 my $INTERVAL = $ENV{INTERVAL} || 1;
11 my $node = `hostname -s`;
15 sub XXX { $DEBUG ? warn "XXX ",Data::Dump::dump( @_ ) : {} };
22 foreach my $instance ( glob '/var/run/ganeti/kvm-hypervisor/pid/*' ) {
24 open(my $fh, '<', $instance);
25 my $pid = <$fh>; chomp $pid;
27 $instance =~ s{^.*/}{};
29 my $vcpu = $last->{$instance}->{vcpu};
32 foreach my $fd ( glob "/proc/$pid/fd/*" ) {
33 $vcpu++ if -l $fd && readlink($fd) =~ m/kvm-vcpu/;
36 $last->{$instance}->{vcpu} = $vcpu;
39 # https://www.kernel.org/doc/Documentation/filesystems/proc.txt
40 open($fh, '<', "/proc/$pid/stat");
41 my $line = <$fh>; chomp $line;
42 my $gtime = (split(/\s+/,$line))[42]; # guest time of the task in jiffies
44 if ( my $last_gtime = $last->{$instance}->{gtime} ) {
45 my $clock_ticks = POSIX::sysconf( &POSIX::_SC_CLK_TCK ); # clock ticks per second
47 my $cpu = ( ( $gtime - $last_gtime ) * 100 ) / ( $clock_ticks * $vcpu );
48 $stat->{$instance}->{cpu} = $cpu;
51 $last->{$instance}->{gtime} = $gtime;
55 foreach my $glob ( glob '/var/run/ganeti/instance-disks/*' ) {
56 my ( $instance, $disk ) = split(/:/,$glob,2);
57 my $dev = readlink $glob;
58 $instance =~ s{^.*/}{};
60 open( my $fh, '<', "/sys/class/block/$dev/stat" );
61 my $v = <$fh>; chomp $v; $v =~ s/^\s+//;
62 my @s = split(/\s+/, $v );
63 # https://www.kernel.org/doc/Documentation/block/stat.txt
66 read_bytes => $s[2] * 512,
69 write_bytes => $s[6] * 512,
72 if ( my $l = $last->{$instance}->{disk}->[$disk] ) {
74 $delta->{$_} = $d->{$_} - $l->{$_} foreach keys %$d;
75 $stat->{$instance}->{disk}->[$disk] = $delta;
76 $stat->{$instance}->{disk}->[$disk]->{dev} = $dev;
77 $stat->{$instance}->{disk}->[$disk]->{disk} = $disk;
79 $last->{$instance}->{disk}->[$disk] = $d;
83 foreach my $instance ( glob '/var/run/ganeti/kvm-hypervisor/nic/*' ) {
84 foreach my $nic ( glob "$instance/*" ) {
85 open(my $fh, '<', $nic);
88 $instance =~ s{^.*/}{};
89 my $vlan = readlink "/sys/class/net/$dev/master";
94 foreach my $f (qw( rx_bytes tx_bytes rx_packets tx_packets )) {
95 open( my $fh, '<', "/sys/class/net/$dev/statistics/$f" );
96 my $v = <$fh>; chomp $v;
99 if ( my $l = $last->{$instance}->{nic}->[$nic] ) {
100 $stat->{$instance}->{nic}->[$nic]->{$_} = $d->{$_} - $l->{$_} foreach keys %$d;
101 $stat->{$instance}->{nic}->[$nic]->{dev} = $dev;
102 $stat->{$instance}->{nic}->[$nic]->{vlan} = $vlan;
104 $last->{$instance}->{nic}->[$nic] = $d;
112 open(my $fh, '>', '/dev/shm/ganeti-monitor.influx');
116 my $d = Data::Dump::dump( $hash );
117 $d =~ s/[\s\r\n]+//g;
118 $d =~ s/[\Q[]{}>\E]//g;
119 $d =~ s/=(\d+),/=$1i,/g;
124 foreach my $instance ( keys %$stat ) {
125 print $fh qq{cpu,node="$node",instance="$instance" cpu=}, $stat->{$instance}->{cpu}, "\n";
127 foreach my $disk ( @{ $stat->{$instance}->{disk} } ) {
128 print $fh qq{disk,node="$node",instance="$instance" },dump4influx( $disk ), "\n";
131 foreach my $nic ( @{ $stat->{$instance}->{nic} } ) {
132 print $fh qq{nic,node="$node",instance="$instance" },dump4influx( $nic ), "\n";
139 system q{curl -i -XPOST 'http://10.80.3.89:8086/write?db=ganeti' --data-binary '@/dev/shm/ganeti-monitor.influx'};