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After upgrading from an Ubuntu/15.10 to 16.04 installation, I noticed that
check_dig is always returning a WARNING:
$ /usr/lib/nagios/plugins/check_dig -l localhost -v
/usr/bin/dig -p 53 @127.0.0.1 localhost A +tries=3 +time=6
Looking for: 'localhost'
DNS WARNING - 0.008 seconds response time (dig returned an error status)|time=0.008274s;;;0.000000
The older Ubuntu installation got its check_dig from the
nagios-plugins-standard package[0] which did not include the +tries
option. The current Ubuntu version provides its check_dig from the
monitoring-plugins-standard package[1], which _does_ use the +tries
option that was introduced with df53473[2].
On my system, it so happens that /usr/bin/dig is provided not by the
(BIND) dnsutils package but by knot-dnsutils[3] from the Knot DNS project.
The Knot dig(1) command doesn't support the +tries option[4] but does
support +retry (which is also supported[5] by the BIND dig(1) command).
One way to fix that would be for me to install the BIND dnsutils package. But I did not
want to do that: it's so much larger in size and pulls in much more dependencies
than the knot-dnsutils package.
The patch below changes check_dig to use +retry instead of +tries. Both
options are similar, but not the same:
+retry - Sets the number of times to retry UDP queries to server to T
instead of the default, 2. Unlike +tries, this does not include
the initial query
As number_tries seems to be hard coded to 3, I've lowered DEFAULT_TRIES to
2 so check_dig should behave as before (with +tries=3).
Thanks,
Christian.
[0] http://packages.ubuntu.com/wily/nagios-plugins-standard
[1] http://packages.ubuntu.com/xenial/monitoring-plugins-standard
[2] https://github.com/monitoring-plugins/monitoring-plugins/commit/df53473
[3] http://packages.ubuntu.com/xenial/knot-dnsutils
[4] https://www.knot-dns.cz/docs/2.x/html/man_kdig.html#notes
[5] https://ftp.isc.org/isc/bind9/cur/9.10/doc/arm/man.dig.html
Signed-off-by: Christian Kujau <lists@nerdbynature.de>
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check_dig was casesensitive if an expected answer is given.
Switching strstr with strcasestr fixes this issue
While testing i noticed a bug where expected is not an exact match
New issue for that is opened #1385
This fix closes #1233
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Signed-off-by: Sven Nierlein <sven@nierlein.de>
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Fix automatic DNS server name detection to honor -4 and -6 switches
(default to 127.0.0.1 or ::1 respectively, i.e. if -6 is given ::1
is used instead of 127.0.0.1)
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FreeBSD starting with version 10 is shipped with ldns instead of bind as
resolver. Consequently the dig tool in base is replaced by drill. While dig can
still be installed as a third party application, it would be nice to make do
with the tools available in the system already.
This patch rearranges the command line used to invoke dig slightly so that it
can be used with both dig and drill (tested with dig 9.8.3-P1 and 9.9.4 as well
as drill 1.6.16). It would be really neat if the configure script could be
changed to automatically pick up drill when dig is not available (or the other
way around), but my autotools-foo is not good enough for that.
This part of the patch is an extended version of the locally maintained patch
currently deployed in the FreeBSD ports tree by Dmitry Sivachenko.
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C89 doesn't allow variable declarations to be intermingled with code.
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This change saves us from having to link check_dig against "libm"
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which is already set to 10 seconds
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When a timeout value is specified with the -t option, dig will sometimes
timeout before the timer is actually reached.
The problem occurs because the check_dig plugin does not pass the specified
timeout value to dig, leaving dig to timeout with it's default value which
seems to be around 10-15seconds.
To reproduce:
time ./check_dig -H 127.0.0.2 -l www.google.com -t 30
It will not run for 30secs, which is the expected behaviour.
The following will work, because the timeout is less than the default dig
timeout, so the plugin cancels the dig command:
time ./check_dig -H 127.0.0.2 -l www.google.com -t 2
This fix passes the timeout value to dig, and sets the number of retries which tends to vary from system to system by default.
Closes #1168
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.c file changes for misleading timeout messages in help functions. Solution to pull request #1209 tracker by awiddersheim.
Files: plugins/check_apt.c, plugins/check_by_ssh.c, plugins/check_dbi.c, plugins/check_dig.c, plugins/check_disk.c, plugins/check_dns.c, plugins/check_game.c, plugins/check_http.c, plugins/check_ldap.c, plugins/check_ntp.c, plugins/check_ntp_peer.c, plugins/check_ntp_time.c, plugins/check_nwstat.c, plugins/check_overcr.c, plugins/check_pgsql.c, plugins/check_ping.c, plugins/check_procs.c, plugins/check_radius.c, plugins/check_real.c, plugins/check_smtp.c, plugins/check_snmp.c, plugins/check_ssh.c, plugins/check_tcp.c, plugins/check_time.c, plugins/check_ups.c, plugins/negate.c
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This is an initial take at renaming the project to Monitoring Plugins.
It's not expected to be fully complete, and it is expected to break
things (The perl module for instance). More testing will be required
before this goes mainline.
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The previous name would collide with popen's. Even if the two are
never used together, it's still a good idea not to have the same
symbol in multiple object files.
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Add command line options -4 and -6 (--use-ipv4 and
--use-ipv6) to check_dig.
Effectively this adds no new functionality, just a
shortcut for:
check_dig -A "-4"
check_dig -A "-6"
Needed for using check_dig with the check_v46 wrapper
(see e.g.
https://gitorious.org/nagios-monitoring-tools/nagios-monitoring-tools/blobs/master/check_v46)
which requires -4/-6 command line option support.
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Fixes many instances of
warning: ignoring return value of 'asprintf', declared with attribute warn_unused_result [-Wunused-result]
Signed-off-by: Anders Kaseorg <andersk@mit.edu>
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Bug #2832884 reported problem with translations outputting pot file
headers. This is caused by "" matching the header of the translation
files.
This patch moves gettext macros inside utils macros and update some
french translations.
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For contrib/, full tags have been imported from subversion
git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/trunk@2091 f882894a-f735-0410-b71e-b25c423dba1c
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check_dig's -l option is mandatory now (#1986306)
git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/trunk@2011 f882894a-f735-0410-b71e-b25c423dba1c
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configure --help)
git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/trunk@1991 f882894a-f735-0410-b71e-b25c423dba1c
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git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/trunk@1984 f882894a-f735-0410-b71e-b25c423dba1c
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- Make --help output looks nice
git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/trunk@1959 f882894a-f735-0410-b71e-b25c423dba1c
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git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/trunk@1943 f882894a-f735-0410-b71e-b25c423dba1c
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git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/trunk@1916 f882894a-f735-0410-b71e-b25c423dba1c
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command line option was used, as this leads to a segfault on some
systems. The unknown option will be printed by getopt(3) anyway. So,
simply call print_usage() and exit UNKNOWN via the new usage5() instead.
git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/trunk@1590 f882894a-f735-0410-b71e-b25c423dba1c
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first pass at making all the headre be the same licence, plugin, etc...
git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/trunk@1499 f882894a-f735-0410-b71e-b25c423dba1c
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git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/trunk@1439 f882894a-f735-0410-b71e-b25c423dba1c
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git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/trunk@1425 f882894a-f735-0410-b71e-b25c423dba1c
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git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/trunk@1282 f882894a-f735-0410-b71e-b25c423dba1c
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git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/trunk@1260 f882894a-f735-0410-b71e-b25c423dba1c
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git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/trunk@1108 f882894a-f735-0410-b71e-b25c423dba1c
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git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/trunk@1061 f882894a-f735-0410-b71e-b25c423dba1c
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bugfixes
git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/trunk@1001 f882894a-f735-0410-b71e-b25c423dba1c
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git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/trunk@998 f882894a-f735-0410-b71e-b25c423dba1c
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other misc cleanups
git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/trunk@996 f882894a-f735-0410-b71e-b25c423dba1c
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this was not a good idea ;-)
git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/trunk@994 f882894a-f735-0410-b71e-b25c423dba1c
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git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/trunk@989 f882894a-f735-0410-b71e-b25c423dba1c
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git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/trunk@988 f882894a-f735-0410-b71e-b25c423dba1c
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initialize result to STATE_UNKNOW in place of STATE_OK
git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/trunk@982 f882894a-f735-0410-b71e-b25c423dba1c
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new usage4 function to permit localisation of think like check_ssh: xxxxx
git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/trunk@979 f882894a-f735-0410-b71e-b25c423dba1c
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git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/trunk@978 f882894a-f735-0410-b71e-b25c423dba1c
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