Your message dated Fri, 02 Jan 2026 09:47:27 +0000 with message-id <[email protected]> and subject line Bug#1121524: Removed package(s) from unstable has caused the Debian Bug report #1019718, regarding nrpe-ng: remote check_dns fails - change in nslookup behavior to be marked as done.
This means that you claim that the problem has been dealt with. If this is not the case it is now your responsibility to reopen the Bug report if necessary, and/or fix the problem forthwith. (NB: If you are a system administrator and have no idea what this message is talking about, this may indicate a serious mail system misconfiguration somewhere. Please contact [email protected] immediately.) -- 1019718: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1019718 Debian Bug Tracking System Contact [email protected] with problems
--- Begin Message ---Package: nrpe-ng Version: 0.2.0-1 Severity: normal Dear Maintainer, I have a setup in which nrpe-ng is used to remotely check DNS connectivity using check_dns. That is: Host A (monitoring): - Installed: nagios4, nrpe-ng - IP address: 192.0.2.1 Host B (monitored): - Installed: nrpe-ng, monitoring-plugins-standard, bind9-dnsutils - IP address: 192.0.2.2 Host C (monitored through host B): - Installed: bind9 - IP address: 192.0.2.3 - Configured to answer authoritatively for example.com on port 53. nrpe over HTTPS DNS Host A ------------------> Host B -------------> Host C When nrpe-ng is running on host B, and host A runs the following, this is the result: $ /usr/lib/nagios/plugins/check_nrpe_ng -H 192.0.2.2 -c check_dns -a example.com 192.0.2.3 0.1 1.0 DNS CRITICAL - '/usr/bin/nslookup -sil' msg parsing exited with no address With some help over at the bind-users mailing list [1], I discovered that nrpe-ng closes stdin when launching the command [2], and the new version of nslookup (invoked by check_dns) has issues when stdin is closed [3]. Redirecting stdin to /dev/null fixes the issue: $ diff -u /usr/lib/python3/dist-packages/nrpe_ng/commands.py{.old,} --- /usr/lib/python3/dist-packages/nrpe_ng/commands.py.old 2017-08-08 13:05:02.000000000 -0600 +++ /usr/lib/python3/dist-packages/nrpe_ng/commands.py 2022-09-13 17:00:36.767239885 -0600 @@ -85,6 +85,7 @@ proc = tornado.process.Subprocess( run_args, + stdin=subprocess.DEVNULL, stdout=tornado.process.Subprocess.STREAM, close_fds=True, env=env) Thanks, Casey [1] https://lists.isc.org/pipermail/bind-users/2022-September/106666.html [2] https://github.com/bootc/nrpe-ng/blob/master/nrpe_ng/commands.py#L86 [3] https://github.com/libuv/libuv/blob/v1.x/src/unix/core.c#L602 -- System Information: Debian Release: 11.5 APT prefers stable-updates APT policy: (500, 'stable-updates'), (500, 'stable-security'), (500, 'stable') Architecture: amd64 (x86_64) Kernel: Linux 5.10.0-8-amd64 (SMP w/8 CPU threads) Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE not set Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled Versions of packages nrpe-ng depends on: ii adduser 3.118 ii init-system-helpers 1.60 ii lsb-base 11.1.0 ii python3 3.9.2-3 ii python3-daemon 2.2.4-1.1 ii python3-pkg-resources 52.0.0-4 ii python3-requests 2.25.1+dfsg-2 ii python3-tornado 6.1.0-1+b1 ii ssl-cert 1.1.0+nmu1 nrpe-ng recommends no packages. nrpe-ng suggests no packages. -- Configuration Files: /etc/nagios/nrpe-ng.cfg changed [not included] -- no debconf information
--- End Message ---
--- Begin Message ---Version: 0.2.0-1.3+rm Dear submitter, as the package nrpe-ng has just been removed from the Debian archive unstable we hereby close the associated bug reports. We are sorry that we couldn't deal with your issue properly. For details on the removal, please see https://bugs.debian.org/1121524 The version of this package that was in Debian prior to this removal can still be found using https://snapshot.debian.org/. Please note that the changes have been done on the master archive and will not propagate to any mirrors until the next dinstall run at the earliest. This message was generated automatically; if you believe that there is a problem with it please contact the archive administrators by mailing [email protected]. Debian distribution maintenance software pp. Thorsten Alteholz (the ftpmaster behind the curtain)
--- End Message ---
