![[tokkee]](http://tokkee.org/images/avatar.png){kind=avatar}
index 164d519051f1d3b498c214f8a8269c974dd93e28..c7c7a754ca3b82409eb0c25fde9c22d0295597b1 100644 (file)
--- a/plugins/check_ntp_time.c
+++ b/plugins/check_ntp_time.c
-/******************************************************************************
-*
-* Nagios check_ntp plugin
-*
+/*****************************************************************************
+*
+* Nagios check_ntp_time plugin
+*
* License: GPL
-* Copyright (c) 2006 sean finney <seanius@seanius.net>
-* Copyright (c) 2007 nagios-plugins team
-*
-* Last Modified: $Date$
-*
+* Copyright (c) 2006 Sean Finney <seanius@seanius.net>
+* Copyright (c) 2006-2008 Nagios Plugins Development Team
+*
* Description:
-*
-* This file contains the check_ntp plugin
-*
-* This plugin to check ntp servers independant of any commandline
-* programs or external libraries.
-*
-*
-* License Information:
-*
-* This program is free software; you can redistribute it and/or modify
+*
+* This file contains the check_ntp_time plugin
+*
+* This plugin checks the clock offset between the local host and a
+* remote NTP server. It is independent of any commandline programs or
+* external libraries.
+*
+* If you'd rather want to monitor an NTP server, please use
+* check_ntp_peer.
+*
+*
+* 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
+* the Free Software Foundation, either version 3 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., 675 Mass Ave, Cambridge, MA 02139, USA.
-
- $Id$
-
+* along with this program. If not, see <http://www.gnu.org/licenses/>.
+*
+*
*****************************************************************************/
-const char *progname = "check_ntp";
-const char *revision = "$Revision$";
-const char *copyright = "2007";
+const char *progname = "check_ntp_time";
+const char *copyright = "2006-2008";
const char *email = "nagiosplug-devel@lists.sourceforge.net";
#include "common.h"
#include "utils.h"
static char *server_address=NULL;
+static char *port="123";
static int verbose=0;
-static short do_offset=0;
+static int quiet=0;
static char *owarn="60";
static char *ocrit="120";
-static short do_jitter=0;
-static char *jwarn="5000";
-static char *jcrit="10000";
int process_arguments (int, char **);
thresholds *offset_thresholds = NULL;
-thresholds *jitter_thresholds = NULL;
void print_help (void);
void print_usage (void);
/* this structure holds data about results from querying offset from a peer */
typedef struct {
- time_t waiting; /* ts set when we started waiting for a response */
+ time_t waiting; /* ts set when we started waiting for a response */
int num_responses; /* number of successfully recieved responses */
uint8_t stratum; /* copied verbatim from the ntp_message */
double rtdelay; /* converted from the ntp_message */
uint8_t flags; /* byte with leapindicator,vers,mode. see macros */
} ntp_server_results;
-/* this structure holds everything in an ntp control message as per rfc1305 */
-typedef struct {
- uint8_t flags; /* byte with leapindicator,vers,mode. see macros */
- uint8_t op; /* R,E,M bits and Opcode */
- uint16_t seq; /* Packet sequence */
- uint16_t status; /* Clock status */
- uint16_t assoc; /* Association */
- uint16_t offset; /* Similar to TCP sequence # */
- uint16_t count; /* # bytes of data */
- char data[MAX_CM_SIZE]; /* ASCII data of the request */
- /* NB: not necessarily NULL terminated! */
-} ntp_control_message;
-
-/* this is an association/status-word pair found in control packet reponses */
-typedef struct {
- uint16_t assoc;
- uint16_t status;
-} ntp_assoc_status_pair;
-
/* bits 1,2 are the leap indicator */
#define LI_MASK 0xc0
#define LI(x) ((x&LI_MASK)>>6)
they are divided into halves, each being a 16-bit int in network byte order:
- the first 16 bits are an int on the left side of a decimal point.
- the second 16 bits represent a fraction n/(2^16)
- likewise for the 64-bit "fixed point" numbers with everything doubled :)
+ likewise for the 64-bit "fixed point" numbers with everything doubled :)
**/
/* macros to access the left/right 16 bits of a 32-bit ntp "fixed point"
printf("\ttxts = %-.16g\n", NTP64asDOUBLE(p->txts));
}
-void print_ntp_control_message(const ntp_control_message *p){
- int i=0, numpeers=0;
- const ntp_assoc_status_pair *peer=NULL;
-
- printf("control packet contents:\n");
- printf("\tflags: 0x%.2x , 0x%.2x\n", p->flags, p->op);
- printf("\t li=%d (0x%.2x)\n", LI(p->flags), p->flags&LI_MASK);
- printf("\t vn=%d (0x%.2x)\n", VN(p->flags), p->flags&VN_MASK);
- printf("\t mode=%d (0x%.2x)\n", MODE(p->flags), p->flags&MODE_MASK);
- printf("\t response=%d (0x%.2x)\n", (p->op&REM_RESP)>0, p->op&REM_RESP);
- printf("\t more=%d (0x%.2x)\n", (p->op&REM_MORE)>0, p->op&REM_MORE);
- printf("\t error=%d (0x%.2x)\n", (p->op&REM_ERROR)>0, p->op&REM_ERROR);
- printf("\t op=%d (0x%.2x)\n", p->op&OP_MASK, p->op&OP_MASK);
- printf("\tsequence: %d (0x%.2x)\n", ntohs(p->seq), ntohs(p->seq));
- printf("\tstatus: %d (0x%.2x)\n", ntohs(p->status), ntohs(p->status));
- printf("\tassoc: %d (0x%.2x)\n", ntohs(p->assoc), ntohs(p->assoc));
- printf("\toffset: %d (0x%.2x)\n", ntohs(p->offset), ntohs(p->offset));
- printf("\tcount: %d (0x%.2x)\n", ntohs(p->count), ntohs(p->count));
- numpeers=ntohs(p->count)/(sizeof(ntp_assoc_status_pair));
- if(p->op&REM_RESP && p->op&OP_READSTAT){
- peer=(ntp_assoc_status_pair*)p->data;
- for(i=0;i<numpeers;i++){
- printf("\tpeer id %.2x status %.2x",
- ntohs(peer[i].assoc), ntohs(peer[i].status));
- if (PEER_SEL(peer[i].status) >= PEER_INCLUDED){
- if(PEER_SEL(peer[i].status) >= PEER_SYNCSOURCE){
- printf(" <-- current sync source");
- } else {
- printf(" <-- current sync candidate");
- }
- }
- printf("\n");
- }
- }
-}
-
void setup_request(ntp_message *p){
struct timeval t;
* this is done by filtering servers based on stratum, dispersion, and
* finally round-trip delay. */
int best_offset_server(const ntp_server_results *slist, int nservers){
- int i=0, j=0, cserver=0, candidates[5], csize=0;
+ int i=0, cserver=0, best_server=-1;
/* for each server */
for(cserver=0; cserver<nservers; cserver++){
- /* sort out servers with error flags */
- if ( LI(slist[cserver].flags) != LI_NOWARNING ){
- if (verbose) printf("discarding peer id %d: flags=%d\n", cserver, LI(slist[cserver].flags));
- break;
+ /* We don't want any servers that fails these tests */
+ /* Sort out servers that didn't respond or responede with a 0 stratum;
+ * stratum 0 is for reference clocks so no NTP server should ever report
+ * a stratum 0 */
+ if ( slist[cserver].stratum == 0){
+ if (verbose) printf("discarding peer %d: stratum=%d\n", cserver, slist[cserver].stratum);
+ continue;
+ }
+ /* Sort out servers with error flags */
+ if ( LI(slist[cserver].flags) == LI_ALARM ){
+ if (verbose) printf("discarding peer %d: flags=%d\n", cserver, LI(slist[cserver].flags));
+ continue;
}
- /* compare it to each of the servers already in the candidate list */
- for(i=0; i<csize; i++){
- /* does it have an equal or better stratum? */
- if(slist[cserver].stratum <= slist[i].stratum){
- /* does it have an equal or better dispersion? */
- if(slist[cserver].rtdisp <= slist[i].rtdisp){
- /* does it have a better rtdelay? */
- if(slist[cserver].rtdelay < slist[i].rtdelay){
- break;
- }
- }
- }
+ /* If we don't have a server yet, use the first one */
+ if (best_server == -1) {
+ best_server = cserver;
+ DBG(printf("using peer %d as our first candidate\n", best_server));
+ continue;
}
- /* if we haven't reached the current list's end, move everyone
- * over one to the right, and insert the new candidate */
- if(i<csize){
- for(j=5; j>i; j--){
- candidates[j]=candidates[j-1];
+ /* compare the server to the best one we've seen so far */
+ /* does it have an equal or better stratum? */
+ DBG(printf("comparing peer %d with peer %d\n", cserver, best_server));
+ if(slist[cserver].stratum <= slist[best_server].stratum){
+ DBG(printf("stratum for peer %d <= peer %d\n", cserver, best_server));
+ /* does it have an equal or better dispersion? */
+ if(slist[cserver].rtdisp <= slist[best_server].rtdisp){
+ DBG(printf("dispersion for peer %d <= peer %d\n", cserver, best_server));
+ /* does it have a better rtdelay? */
+ if(slist[cserver].rtdelay < slist[best_server].rtdelay){
+ DBG(printf("rtdelay for peer %d < peer %d\n", cserver, best_server));
+ best_server = cserver;
+ DBG(printf("peer %d is now our best candidate\n", best_server));
+ }
}
}
- /* regardless, if they should be on the list... */
- if(i<5) {
- candidates[i]=cserver;
- if(csize<5) csize++;
- /* otherwise discard the server */
- } else {
- DBG(printf("discarding peer id %d\n", cserver));
- }
}
- if(csize>0) {
- DBG(printf("best server selected: peer %d\n", candidates[0]));
- return candidates[0];
+ if(best_server >= 0) {
+ DBG(printf("best server selected: peer %d\n", best_server));
+ return best_server;
} else {
DBG(printf("no peers meeting synchronization criteria :(\n"));
return -1;
/* do everything we need to get the total average offset
* - we use a certain amount of parallelization with poll() to ensure
- * we don't waste time sitting around waiting for single packets.
+ * we don't waste time sitting around waiting for single packets.
* - we also "manually" handle resolving host names and connecting, because
* we have to do it in a way that our lazy macros don't handle currently :( */
double offset_request(const char *host, int *status){
hints.ai_socktype = SOCK_DGRAM;
/* fill in ai with the list of hosts resolved by the host name */
- ga_result = getaddrinfo(host, "123", &hints, &ai);
+ ga_result = getaddrinfo(host, port, &hints, &ai);
if(ga_result!=0){
die(STATE_UNKNOWN, "error getting address for %s: %s\n",
host, gai_strerror(ga_result));
servers=(ntp_server_results*)malloc(sizeof(ntp_server_results)*num_hosts);
if(servers==NULL) die(STATE_UNKNOWN, "can not allocate server array");
memset(servers, 0, sizeof(ntp_server_results)*num_hosts);
+ DBG(printf("Found %d peers to check\n", num_hosts));
/* setup each socket for writing, and the corresponding struct pollfd */
ai_tmp=ai;
ai_tmp = ai_tmp->ai_next;
}
- /* now do AVG_NUM checks to each host. we stop before timeout/2 seconds
+ /* now do AVG_NUM checks to each host. We stop before timeout/2 seconds
* have passed in order to ensure post-processing and jitter time. */
now_time=start_ts=time(NULL);
while(servers_completed<num_hosts && now_time-start_ts <= socket_timeout/2){
/* loop through each server and find each one which hasn't
* been touched in the past second or so and is still lacking
- * some responses. for each of these servers, send a new request,
+ * some responses. For each of these servers, send a new request,
* and update the "waiting" timestamp with the current time. */
one_written=0;
now_time=time(NULL);
}
/* cleanup */
- /* FIXME: Not closing the socket to avoid re-use of the local port
- * which can cause old NTP packets to be read instead of NTP control
- * pactets in jitter_request(). THERE MUST BE ANOTHER WAY...
- * for(j=0; j<num_hosts; j++){ close(socklist[j]); } */
+ for(j=0; j<num_hosts; j++){ close(socklist[j]); }
free(socklist);
free(ufds);
free(servers);
return avg_offset;
}
-void
-setup_control_request(ntp_control_message *p, uint8_t opcode, uint16_t seq){
- memset(p, 0, sizeof(ntp_control_message));
- LI_SET(p->flags, LI_NOWARNING);
- VN_SET(p->flags, VN_RESERVED);
- MODE_SET(p->flags, MODE_CONTROLMSG);
- OP_SET(p->op, opcode);
- p->seq = htons(seq);
- /* Remaining fields are zero for requests */
-}
-
-/* XXX handle responses with the error bit set */
-double jitter_request(const char *host, int *status){
- int conn=-1, i, npeers=0, num_candidates=0, syncsource_found=0;
- int run=0, min_peer_sel=PEER_INCLUDED, num_selected=0, num_valid=0;
- int peers_size=0, peer_offset=0;
- ntp_assoc_status_pair *peers=NULL;
- ntp_control_message req;
- const char *getvar = "jitter";
- double rval = 0.0, jitter = -1.0;
- char *startofvalue=NULL, *nptr=NULL;
- void *tmp;
-
- /* Long-winded explanation:
- * Getting the jitter requires a number of steps:
- * 1) Send a READSTAT request.
- * 2) Interpret the READSTAT reply
- * a) The data section contains a list of peer identifiers (16 bits)
- * and associated status words (16 bits)
- * b) We want the value of 0x06 in the SEL (peer selection) value,
- * which means "current synchronizatin source". If that's missing,
- * we take anything better than 0x04 (see the rfc for details) but
- * set a minimum of warning.
- * 3) Send a READVAR request for information on each peer identified
- * in 2b greater than the minimum selection value.
- * 4) Extract the jitter value from the data[] (it's ASCII)
- */
- my_udp_connect(server_address, 123, &conn);
-
- /* keep sending requests until the server stops setting the
- * REM_MORE bit, though usually this is only 1 packet. */
- do{
- setup_control_request(&req, OP_READSTAT, 1);
- DBG(printf("sending READSTAT request"));
- write(conn, &req, SIZEOF_NTPCM(req));
- DBG(print_ntp_control_message(&req));
- /* Attempt to read the largest size packet possible */
- req.count=htons(MAX_CM_SIZE);
- DBG(printf("recieving READSTAT response"))
- read(conn, &req, SIZEOF_NTPCM(req));
- DBG(print_ntp_control_message(&req));
- /* Each peer identifier is 4 bytes in the data section, which
- * we represent as a ntp_assoc_status_pair datatype.
- */
- peers_size+=ntohs(req.count);
- if((tmp=realloc(peers, peers_size)) == NULL)
- free(peers), die(STATE_UNKNOWN, "can not (re)allocate 'peers' buffer\n");
- peers=tmp;
- memcpy((void*)((ptrdiff_t)peers+peer_offset), (void*)req.data, ntohs(req.count));
- npeers=peers_size/sizeof(ntp_assoc_status_pair);
- peer_offset+=ntohs(req.count);
- } while(req.op&REM_MORE);
-
- /* first, let's find out if we have a sync source, or if there are
- * at least some candidates. in the case of the latter we'll issue
- * a warning but go ahead with the check on them. */
- for (i = 0; i < npeers; i++){
- if (PEER_SEL(peers[i].status) >= PEER_INCLUDED){
- num_candidates++;
- if(PEER_SEL(peers[i].status) >= PEER_SYNCSOURCE){
- syncsource_found=1;
- min_peer_sel=PEER_SYNCSOURCE;
- }
- }
- }
- if(verbose) printf("%d candiate peers available\n", num_candidates);
- if(verbose && syncsource_found) printf("synchronization source found\n");
- if(! syncsource_found){
- *status = STATE_UNKNOWN;
- if(verbose) printf("warning: no synchronization source found\n");
- }
-
-
- for (run=0; run<AVG_NUM; run++){
- if(verbose) printf("jitter run %d of %d\n", run+1, AVG_NUM);
- for (i = 0; i < npeers; i++){
- /* Only query this server if it is the current sync source */
- if (PEER_SEL(peers[i].status) >= min_peer_sel){
- num_selected++;
- setup_control_request(&req, OP_READVAR, 2);
- req.assoc = peers[i].assoc;
- /* By spec, putting the variable name "jitter" in the request
- * should cause the server to provide _only_ the jitter value.
- * thus reducing net traffic, guaranteeing us only a single
- * datagram in reply, and making intepretation much simpler
- */
- /* Older servers doesn't know what jitter is, so if we get an
- * error on the first pass we redo it with "dispersion" */
- strncpy(req.data, getvar, MAX_CM_SIZE-1);
- req.count = htons(strlen(getvar));
- DBG(printf("sending READVAR request...\n"));
- write(conn, &req, SIZEOF_NTPCM(req));
- DBG(print_ntp_control_message(&req));
-
- req.count = htons(MAX_CM_SIZE);
- DBG(printf("recieving READVAR response...\n"));
- read(conn, &req, SIZEOF_NTPCM(req));
- DBG(print_ntp_control_message(&req));
-
- if(req.op&REM_ERROR && strstr(getvar, "jitter")) {
- if(verbose) printf("The 'jitter' command failed (old ntp server?)\nRestarting with 'dispersion'...\n");
- getvar = "dispersion";
- num_selected--;
- i--;
- continue;
- }
-
- /* get to the float value */
- if(verbose) {
- printf("parsing jitter from peer %.2x: ", ntohs(peers[i].assoc));
- }
- startofvalue = strchr(req.data, '=');
- if(startofvalue != NULL) {
- startofvalue++;
- jitter = strtod(startofvalue, &nptr);
- }
- if(startofvalue == NULL || startofvalue==nptr){
- printf("warning: unable to read server jitter response.\n");
- *status = STATE_UNKNOWN;
- } else {
- if(verbose) printf("%g\n", jitter);
- num_valid++;
- rval += jitter;
- }
- }
- }
- if(verbose){
- printf("jitter parsed from %d/%d peers\n", num_valid, num_selected);
- }
- }
-
- rval = num_valid ? rval / num_valid : -1.0;
-
- close(conn);
- if(peers!=NULL) free(peers);
- /* If we return -1.0, it means no synchronization source was found */
- return rval;
-}
-
int process_arguments(int argc, char **argv){
int c;
int option=0;
{"verbose", no_argument, 0, 'v'},
{"use-ipv4", no_argument, 0, '4'},
{"use-ipv6", no_argument, 0, '6'},
+ {"quiet", no_argument, 0, 'q'},
{"warning", required_argument, 0, 'w'},
{"critical", required_argument, 0, 'c'},
- {"jwarn", required_argument, 0, 'j'},
- {"jcrit", required_argument, 0, 'k'},
{"timeout", required_argument, 0, 't'},
{"hostname", required_argument, 0, 'H'},
+ {"port", required_argument, 0, 'p'},
{0, 0, 0, 0}
};
-
+
if (argc < 2)
usage ("\n");
while (1) {
- c = getopt_long (argc, argv, "Vhv46w:c:j:k:t:H:", longopts, &option);
+ c = getopt_long (argc, argv, "Vhv46qw:c:t:H:p:", longopts, &option);
if (c == -1 || c == EOF || c == 1)
break;
exit(STATE_OK);
break;
case 'V':
- print_revision(progname, revision);
+ print_revision(progname, NP_VERSION);
exit(STATE_OK);
break;
case 'v':
verbose++;
break;
+ case 'q':
+ quiet = 1;
+ break;
case 'w':
- do_offset=1;
owarn = optarg;
break;
case 'c':
- do_offset=1;
ocrit = optarg;
break;
- case 'j':
- do_jitter=1;
- jwarn = optarg;
- break;
- case 'k':
- do_jitter=1;
- jcrit = optarg;
- break;
case 'H':
if(is_host(optarg) == FALSE)
usage2(_("Invalid hostname/address"), optarg);
server_address = strdup(optarg);
break;
+ case 'p':
+ port = strdup(optarg);
+ break;
case 't':
socket_timeout=atoi(optarg);
break;
FALSE, 0, FALSE, 0);
}
-char *perfd_jitter (double jitter)
-{
- return fperfdata ("jitter", jitter, "s",
- do_jitter, jitter_thresholds->warning->end,
- do_jitter, jitter_thresholds->critical->end,
- TRUE, 0, FALSE, 0);
-}
-
int main(int argc, char *argv[]){
- int result, offset_result, jitter_result;
- double offset=0, jitter=0;
+ int result, offset_result;
+ double offset=0;
char *result_line, *perfdata_line;
- result = offset_result = jitter_result = STATE_OK;
+ setlocale (LC_ALL, "");
+ bindtextdomain (PACKAGE, LOCALEDIR);
+ textdomain (PACKAGE);
+
+ result = offset_result = STATE_OK;
+
+ /* Parse extra opts if any */
+ argv=np_extra_opts (&argc, argv, progname);
if (process_arguments (argc, argv) == ERROR)
usage4 (_("Could not parse arguments"));
set_thresholds(&offset_thresholds, owarn, ocrit);
- set_thresholds(&jitter_thresholds, jwarn, jcrit);
/* initialize alarm signal handling */
signal (SIGALRM, socket_timeout_alarm_handler);
alarm (socket_timeout);
offset = offset_request(server_address, &offset_result);
- /* check_ntp used to always return CRITICAL if offset_result == STATE_UNKNOWN.
- * Now we'll only do that is the offset thresholds were set */
- if (do_offset && offset_result == STATE_UNKNOWN) {
- result = STATE_CRITICAL;
+ if (offset_result == STATE_UNKNOWN) {
+ result = (quiet == 1 ? STATE_UNKNOWN : STATE_CRITICAL);
} else {
result = get_status(fabs(offset), offset_thresholds);
}
- /* If not told to check the jitter, we don't even send packets.
- * jitter is checked using NTP control packets, which not all
- * servers recognize. Trying to check the jitter on OpenNTPD
- * (for example) will result in an error
- */
- if(do_jitter){
- jitter=jitter_request(server_address, &jitter_result);
- result = max_state_alt(result, get_status(jitter, jitter_thresholds));
- /* -1 indicates that we couldn't calculate the jitter
- * Only overrides STATE_OK from the offset */
- if(jitter == -1.0 && result == STATE_OK)
- result = STATE_UNKNOWN;
- }
- result = max_state_alt(result, jitter_result);
-
switch (result) {
case STATE_CRITICAL :
- asprintf(&result_line, "NTP CRITICAL:");
+ asprintf(&result_line, _("NTP CRITICAL:"));
break;
case STATE_WARNING :
- asprintf(&result_line, "NTP WARNING:");
+ asprintf(&result_line, _("NTP WARNING:"));
break;
case STATE_OK :
- asprintf(&result_line, "NTP OK:");
+ asprintf(&result_line, _("NTP OK:"));
break;
default :
- asprintf(&result_line, "NTP UNKNOWN:");
+ asprintf(&result_line, _("NTP UNKNOWN:"));
break;
}
if(offset_result == STATE_UNKNOWN){
asprintf(&result_line, "%s %s", result_line, _("Offset unknown"));
asprintf(&perfdata_line, "");
} else {
- asprintf(&result_line, "%s Offset %.10g secs", result_line, offset);
+ asprintf(&result_line, "%s %s %.10g secs", result_line, _("Offset"), offset);
asprintf(&perfdata_line, "%s", perfd_offset(offset));
}
- if (do_jitter) {
- asprintf(&result_line, "%s, jitter=%f", result_line, jitter);
- asprintf(&perfdata_line, "%s %s", perfdata_line, perfd_jitter(jitter));
- }
printf("%s|%s\n", result_line, perfdata_line);
if(server_address!=NULL) free(server_address);
return result;
}
-
-
void print_help(void){
- print_revision(progname, revision);
+ print_revision(progname, NP_VERSION);
printf ("Copyright (c) 2006 Sean Finney\n");
printf (COPYRIGHT, copyright, email);
-
- printf ("%s\n", _("This plugin checks the selected ntp server"));
- printf ("\n\n");
-
+ printf ("%s\n", _("This plugin checks the clock offset with the ntp server"));
+
+ printf ("\n\n");
+
print_usage();
printf (_(UT_HELP_VRSN));
+ printf (_(UT_EXTRA_OPTS));
printf (_(UT_HOST_PORT), 'p', "123");
+ printf (" %s\n", "-q, --quiet");
+ printf (" %s\n", _("Returns UNKNOWN instead of CRITICAL if offset cannot be found"));
printf (" %s\n", "-w, --warning=THRESHOLD");
printf (" %s\n", _("Offset to result in warning status (seconds)"));
printf (" %s\n", "-c, --critical=THRESHOLD");
printf (" %s\n", _("Offset to result in critical status (seconds)"));
- printf (" %s\n", "-j, --warning=THRESHOLD");
- printf (" %s\n", _("Warning threshold for jitter"));
- printf (" %s\n", "-k, --critical=THRESHOLD");
- printf (" %s\n", _("Critical threshold for jitter"));
printf (_(UT_TIMEOUT), DEFAULT_SOCKET_TIMEOUT);
printf (_(UT_VERBOSE));
+ printf("\n");
+ printf("%s\n", _("This plugin checks the clock offset between the local host and a"));
+ printf("%s\n", _("remote NTP server. It is independent of any commandline programs or"));
+ printf("%s\n", _("external libraries."));
+
printf("\n");
printf("%s\n", _("Notes:"));
- printf(" %s\n", _("See:"));
- printf(" %s\n", ("http://nagiosplug.sourceforge.net/developer-guidelines.html#THRESHOLDFORMAT"));
- printf(" %s\n", _("for THRESHOLD format and examples."));
+ printf(" %s\n", _("If you'd rather want to monitor an NTP server, please use"));
+ printf(" %s\n", _("check_ntp_peer."));
+ printf("\n");
+ printf(_(UT_THRESHOLDS_NOTES));
+#ifdef NP_EXTRA_OPTS
+ printf("\n");
+ printf(_(UT_EXTRA_OPTS_NOTES));
+#endif
printf("\n");
printf("%s\n", _("Examples:"));
- printf(" %s\n", _("Normal offset check:"));
- printf(" %s\n", ("./check_ntp -H ntpserv -w 0.5 -c 1"));
- printf(" %s\n", _("Check jitter too, avoiding critical notifications if jitter isn't available"));
- printf(" %s\n", _("(See Notes above for more details on thresholds formats):"));
- printf(" %s\n", ("./check_ntp -H ntpserv -w 0.5 -c 1 -j -1:100 -k -1:200"));
+ printf(" %s\n", ("./check_ntp_time -H ntpserv -w 0.5 -c 1"));
printf (_(UT_SUPPORT));
}
void
print_usage(void)
{
- printf (_("Usage:"));
- printf(" %s -H <host> [-w <warn>] [-c <crit>] [-j <warn>] [-k <crit>] [-v verbose]\n", progname);
+ printf (_("Usage:"));
+ printf(" %s -H <host> [-w <warn>] [-c <crit>] [-v verbose]\n", progname);
}
+