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conntrack plugin

master
Olaf Rempel 15 years ago
parent
commit
0ce47d53f5
  1. 2
      Makefile
  2. 3
      plugins/Makefile
  3. 176
      plugins/conntrack.c
  4. 1
      sammler.conf

2
Makefile

@ -2,7 +2,7 @@
WITH_RRD=yes
PLUGINS := ctstat diskstat load memory mount netdev random rtstat stat uptime vmstat
PLUGINS += apache mysql
PLUGINS += apache mysql conntrack
# ############################

3
plugins/Makefile

@ -14,6 +14,9 @@ all: $(PLUGINS:%=%.so)
apache.so: apache.o
$(LD) -shared -lcurl -o $@ $^
conntrack.so: conntrack.o
$(LD) -shared -lnfnetlink -lnetfilter_conntrack -o $@ $^
mysql.so: mysql.o mysql_helper.o
$(LD) -shared -lmysqlclient -o $@ $^

176
plugins/conntrack.c

@ -0,0 +1,176 @@
/***************************************************************************
* Copyright (C) 04/2007 by Olaf Rempel *
* razzor@kopf-tisch.de *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* 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, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <libnfnetlink/libnfnetlink.h>
#include <libnetfilter_conntrack/libnetfilter_conntrack.h>
#include "logging.h"
#include "plugins.h"
#include "probe.h"
#define DS_L3PROTO 1
#define DS_L4PROTO 2
#define DS_TCP 3
struct sammler_plugin plugin;
static struct nfct_handle *cth;
struct ct_values {
int total;
int local;
int nated;
int unreplied;
int proto_tcp;
int proto_udp;
int proto_unknown;
int tcp_state[10];
};
static const char *l3proto_ds_def = {
"DS:total:GAUGE:15:0:U "
"DS:local:GAUGE:15:0:U "
"DS:nated:GAUGE:15:0:U "
"DS:unreplied:GAUGE:15:0:U "
};
static const char *l4proto_ds_def = {
"DS:tcp:GAUGE:15:0:U "
"DS:udp:GAUGE:15:0:U "
"DS:unknown:GAUGE:15:0:U "
};
static const char *tcp_ds_def = {
"DS:none:GAUGE:15:0:U "
"DS:syn_sent:GAUGE:15:0:U "
"DS:syn_recv:GAUGE:15:0:U "
"DS:established:GAUGE:15:0:U "
"DS:fin_wait:GAUGE:15:0:U "
"DS:close_wait:GAUGE:15:0:U "
"DS:last_ack:GAUGE:15:0:U "
"DS:time_wait:GAUGE:15:0:U "
"DS:close:GAUGE:15:0:U "
"DS:listen:GAUGE:15:0:U "
};
static const char * get_ds(int ds_id)
{
switch (ds_id) {
case DS_L3PROTO:
return l3proto_ds_def;
case DS_L4PROTO:
return l4proto_ds_def;
case DS_TCP:
return tcp_ds_def;
default:
return NULL;
}
}
static int probe_cb(void *arg, unsigned int flags, int type, void *privdata)
{
struct nfct_conntrack *ct = (struct nfct_conntrack *)arg;
struct ct_values *data = (struct ct_values *)privdata;
data->total++;
if (ct->status & IPS_NAT_MASK)
data->nated++;
else
data->local++;
if (!(ct->status & IPS_SEEN_REPLY))
data->unreplied++;
switch (ct->tuple[NFCT_DIR_ORIGINAL].protonum) {
case IPPROTO_TCP:
data->proto_tcp++;
data->tcp_state[ct->protoinfo.tcp.state]++;
break;
case IPPROTO_UDP:
data->proto_udp++;
break;
default:
data->proto_unknown++;
break;
}
return 0;
}
static int probe(void)
{
struct ct_values data;
memset(&data, 0, sizeof(data));
nfct_register_callback(cth, probe_cb, &data);
if (nfct_dump_conntrack_table(cth, AF_INET) < 0) {
log_print(LOG_WARN, "plugin conntrack: nfct_dump_conntrack_table()");
return -1;
}
probe_submit(&plugin, "conntrack.rrd", DS_L3PROTO, "%d:%d:%d:%d",
data.total, data.local, data.nated, data.unreplied);
probe_submit(&plugin, "conntrack-proto.rrd", DS_L4PROTO, "%d:%d:%d",
data.proto_tcp, data.proto_udp, data.proto_unknown);
probe_submit(&plugin, "conntrack-tcp.rrd", DS_TCP, "%d:%d:%d:%d:%d:%d:%d:%d:%d:%d",
data.tcp_state[0], data.tcp_state[1], data.tcp_state[2], data.tcp_state[3],
data.tcp_state[4], data.tcp_state[5], data.tcp_state[6], data.tcp_state[7],
data.tcp_state[8], data.tcp_state[9]);
return 0;
}
static int init(void)
{
cth = nfct_open(CONNTRACK, 0);
if (cth == NULL) {
log_print(LOG_WARN, "plugin conntrack: nfct_open()");
return -1;
}
return 0;
}
static int fini(void)
{
nfct_close(cth);
return 0;
}
struct sammler_plugin plugin = {
.name = "conntrack",
.interval = 10,
.init = &init,
.fini = &fini,
.probe = &probe,
.get_ds = &get_ds,
};

1
sammler.conf

@ -23,6 +23,7 @@ plugin rtstat.so
plugin random.so
plugin mysql.so
plugin apache.so
plugin conntrack.so
# 1h(10s), 12h(1min), 48h(2min), 14d(15min), 4w(60min), 2y(12h)
rra RRA:MIN:0.1:1:360 RRA:AVERAGE:0.1:1:360 RRA:MAX:0.1:1:360

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