Package: munin-plugins-core Version: 2.0.28-1 Severity: normal Here is the old web page of my sensors_temp plugin, last month (backup)
Field Internal name Type Warn Crit Info Core 0 temp2 gauge 105.0 105.0 Core 1 temp3 gauge 105.0 105.0 Core 2 temp4 gauge 105.0 105.0 Core 3 temp5 gauge 105.0 105.0 SYSTIN temp6 gauge 65 75 CPUTIN temp7 gauge 75.0 80.0 AUXTIN temp8 gauge 75.0 80.0 Last week, I made a global system update. Here is the same page today: Field Internal name Type Warn Crit Info SYSTIN temp1 gauge 0.0 0.0 CPUTIN temp2 gauge 75.0 80.0 AUXTIN temp3 gauge 75.0 80.0 PCH_CHIP_TEMP temp4 gauge PCH_CPU_TEMP temp5 gauge PCH_MCH_TEMP temp6 gauge 20:65 10:75 temp1 temp7 gauge 90.0 Core 0 temp8 gauge 105.0 105.0 Forget about missing lines like temp1; I have disable some fields in server conf. The core problem is that some probes have changed name: SYSTIN used to be temp6 and is now temp1; implies two problems: new SYSTIN inherits the past RRD of temp1 (which was probably a stupid probe since I had it disabled). Other way to look at it: temp8 was AUXTIN and is now core0; before the update the curve represents external probe; after the update, internal CPU. So, a given rrd(curve) will represent two different probes, depending on the date we are looking at. This is a severe problem: I had the machine setup with warnings and criticals for security reasons. After update, all my settings are messed-up; what means, the configuration I made to wanr me about failing parts is lost; if I had not dig in Munin, some critical part of the server could have failed without a single warning. In my machine, when any fan is broken, the machine has to stop (and stop before a component overheats; I had a PSU fan diyng; when PSU overheated, it came into short circuit, and injected high voltage into the HDD: bad PSU fan killed my disk !!!). Munin is not responsible for sensors package updates, and potential changes; but the plugin needs to provide a way to keep track of which field is pointing to which probe. And have that stable over years. If plugin can not record things this way, it needs to provide a manual way to associate sensors-probes to munin-field-name. -- System Information: Debian Release: stretch/sid APT prefers testing APT policy: (500, 'testing') Architecture: amd64 (x86_64) Kernel: Linux 4.8.0-2-amd64 (SMP w/4 CPU cores) Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) Versions of packages munin-plugins-core depends on: ii munin-common 2.0.28-1 ii perl 5.24.1~rc4-1 Versions of packages munin-plugins-core recommends: ii libnet-snmp-perl 6.0.1-2 Versions of packages munin-plugins-core suggests: pn conntrack <none> pn libcache-cache-perl <none> ii libdbd-mysql-perl 4.041-1 pn libnet-dns-perl <none> pn libnet-netmask-perl <none> pn libnet-telnet-perl <none> ii libxml-parser-perl 2.44-2+b1 ii python 2.7.11-2 pn ruby | ruby-interpreter <none> -- no debconf information
