Package: munin-node Version: 2.0.45-1 Severity: normal Dear Maintainer,
on one of my systems I noticed that munin no longer records disk free data for the separate /home filesystem. While debugging I could not reproduce the problem when running the df plugin with munin-run. I could also not reproduce it with munin-node started directly from the command line. Incomplete output with munin-node run as daemon from systemd: marc@nephthys:~$ nc localhost 4949 # munin node at nephthys fetch df _dev_mapper_nephthys_root_crypt.value 73.5565195777657 _dev_shm.value 1.84851226160177 _run.value 10.594829277865 _run_lock.value 0.078125 _sys_fs_cgroup.value 0 _dev_sda1.value 25.5692545665476 . Complete output with munin-node run from CLI: marc@nephthys:~$ nc localhost 4949 # munin node at nephthys fetch df _dev_mapper_nephthys_root_crypt.value 73.5626819028434 _dev_shm.value 2.66106291417369 _run.value 10.5943386970173 _run_lock.value 0.078125 _sys_fs_cgroup.value 0 _dev_sda1.value 25.5692545665476 _dev_mapper_nephthys_home_crypt.value 95.5244404001415 . See the last line with label _dev_mapper_nephthys_home_crypt. I found that modifying the service file /lib/systemd/system/munin-node.service for munin-node fixes this. The default has: ProtectHome=true I changed it to: # Plugins like "df" require access to /home if that is a separate filesystem ProtectHome=false This fixed the problem Kind regards Marc -- System Information: Debian Release: buster/sid APT prefers testing APT policy: (745, 'testing'), (500, 'stable'), (400, 'unstable'), (300, 'experimental') Architecture: amd64 (x86_64) Foreign Architectures: i386 Kernel: Linux 4.19.0-1-amd64 (SMP w/4 CPU cores) Kernel taint flags: TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE Locale: LANG=C.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8), LANGUAGE=C.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled Versions of packages munin-node depends on: ii libnet-server-perl 2.009-1 ii lsb-base 10.2018112800 ii munin-common 2.0.45-1 ii munin-plugins-core 2.0.45-1 ii netbase 5.5 ii perl 5.28.1-4 Versions of packages munin-node recommends: ii gawk 1:4.2.1+dfsg-1 ii munin-plugins-extra 2.0.45-1 ii procps 2:3.3.15-2 Versions of packages munin-node suggests: pn munin <none> pn munin-plugins-java <none> -- Configuration Files: /etc/munin/munin-node.conf changed: log_level 4 log_file /var/log/munin/munin-node.log pid_file /var/run/munin/munin-node.pid background 1 setsid 1 user root group root ignore_file [\#~]$ ignore_file DEADJOE$ ignore_file \.bak$ ignore_file %$ ignore_file \.dpkg-(tmp|new|old|dist)$ ignore_file \.rpm(save|new)$ ignore_file \.pod$ allow ^127\.0\.0\.1$ allow ^::1$ allow ^192\.168\.102\.[0-9]*$ allow ^2001:6f8:1d3e:[:0-9a-f]*$ host 127.0.0.1 port 4949 /etc/munin/plugin-conf.d/README [Errno 13] Permission denied: '/etc/munin/plugin-conf.d/README' /etc/munin/plugin-conf.d/munin-node [Errno 13] Permission denied: '/etc/munin/plugin-conf.d/munin-node' -- no debconf information
