Package: mon Version: 1.3.3-4.1 Severity: normal Below is what happens when trying to monitor a remote server that requires authentication (or a server that disconnects abruptly, a server not running the mon protocol, or many other potential protocol issues).
Firstly support for username/password authentication is a wishlist item. Secondly having the program always display user-focused error messages rather than Perl diagnostics is expected. $ /usr/lib/mon/mon.d/remote.monitor server Odd number of elements in hash assignment at /usr/lib/mon/mon.d/remote.monitor line 162, <GEN0> line 2. Use of uninitialized value in list assignment at /usr/lib/mon/mon.d/remote.monitor line 162, <GEN0> line 2. Exiting subroutine via next at /usr/lib/mon/mon.d/remote.monitor line 187, <GEN0> line 2. Exiting eval via next at /usr/lib/mon/mon.d/remote.monitor line 187, <GEN0> line 2. server:list_opstatus Details for server failure : list_opstatus failed:520 command could not be executed, unknown command -- System Information: Debian Release: 10.0 APT prefers stable APT policy: (500, 'stable') Architecture: amd64 (x86_64) Foreign Architectures: i386 Kernel: Linux 4.19.0-5-amd64 (SMP w/4 CPU cores) Locale: LANG=en_AU.UTF-8, LC_CTYPE=en_AU.UTF-8 (charmap=UTF-8), LANGUAGE=en_AU:en (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) LSM: SELinux: enabled - Mode: Permissive - Policy name: default Versions of packages mon depends on: ii adduser 3.118 ii libc6 2.28-10 ii libtime-period-perl 1.25-1 ii mon-client 1.2.0-2 Versions of packages mon recommends: ii bc 1.07.1-2+b1 pn fping <none> pn libauthen-pam-perl <none> ii libcgi-pm-perl 4.40-1 ii libcrypt-ssleay-perl 0.73.06-1+b1 ii libfilesys-df-perl 0.92-6+b4 ii libmail-imapclient-perl 3.42-1 ii libnet-dns-perl 1.19-1 pn libnet-ldap-perl <none> pn libnet-perl <none> pn libnet-telnet-perl <none> ii libproc-processtable-perl 0.56-1 pn libsnmp-perl <none> pn libstatistics-descriptive-perl <none> pn libtime-parsedate-perl <none> ii libtimedate-perl 2.3000-2 ii swaks 20181104.0-2 Versions of packages mon suggests: ii mon-contrib 1.0+dfsg-4 -- Configuration Files: /etc/mon/mon.cf changed [not included] -- no debconf information