Comments (3)
BETLOG
commented on June 9, 2024
I think this was related to #1281 (comment)
from munin.
BETLOG
commented on June 9, 2024
Nope.
Can anyone help me out with this error?
2023/11/22 20:58:29 [ERROR] Unable to create '/var/lib/munin/munin/pi4b-df_inode-devtmpfs-g.rrd': you must define at least one Round Robin Archive
I was thinking that by deleting /var/lib/munin/munin/pi4b*.rrd and restarting munin it probably should generate new databases with the relevant round-robin-ness....but that didnt work, unless maybe i missed deleting something relevant.
from munin.
BETLOG
commented on June 9, 2024
Two things:
1/2) Permissions get changed to bad values... by (i assume) munin-cron
eg:
I'll stop everything before I start munin-check:
root@betlognuc:/home/user# systemctl stop munin munin-node apache2
root@betlognuc:/home/user# munin-check -f
check /var/cache/munin/www
check /var/lib/munin/cgi-tmp
ls: cannot access '/var/lib/munin/cgi-tmp/munin-cgi-graph/*': No such file or directory
# /var/lib/munin/cgi-tmp/munin-cgi-graph/* : Wrong owner ( != munin)
chown: cannot access '/var/lib/munin/cgi-tmp/munin-cgi-graph/*': No such file or directory
check /var/lib/munin/datafile
check /var/lib/munin/datafile.storable
check /var/lib/munin/graphs
check /var/lib/munin/htmlconf.storable
check /var/lib/munin/limits
check /var/lib/munin/limits.storable
check /var/lib/munin/munin
check /var/lib/munin/munin-graph.stats
check /var/lib/munin/munin-stats.stats
check /var/lib/munin/munin-update.stats
check /var/lib/munin/munin-update.stats.tmp
check /var/lib/munin/state-munin-betlogbeast.storable
check /var/lib/munin/state-munin-betlogbrick.storable
check /var/lib/munin/state-munin-betlognuc.storable
check /var/lib/munin/state-munin-p3bplus.storable
check /var/lib/munin/state-munin-pi3bplus.storable
check /var/lib/munin/state-munin-pi3b.storable
check /var/lib/munin/state-munin-pi4b.storable
check /var/lib/munin/state-munin-pizerocam0.storable
check /var/lib/munin/state-munin-pizerocam1.storable
check /var/lib/munin/state-munin-pizerocam2.storable
check /var/lib/munin/state-munin-pizerocam3.storable
check /var/lib/munin/state-munin-router.storable
check miscellaneous
# /var/lib/munin/datafile : Wrong permissions (664 != 644)
# /var/lib/munin/munin-graph.stats : Wrong permissions (664 != 644)
# /var/lib/munin/munin-update.stats : Wrong permissions (664 != 644)
Check done. Please note that this script only checks most things,
not all things.
Please also note that this script may be buggy.
I'll come back to : /var/lib/munin/cgi-tmp/munin-cgi-graph/* later.
Moving on: Wrong permissions (664 != 644).
So I re-run munin-check -f to see if the previous run fixed them.
root@betlognuc:/home/user# munin-check -f
check /var/cache/munin/www
check /var/lib/munin/cgi-tmp
ls: cannot access '/var/lib/munin/cgi-tmp/munin-cgi-graph/*': No such file or directory
# /var/lib/munin/cgi-tmp/munin-cgi-graph/* : Wrong owner ( != munin)
chown: cannot access '/var/lib/munin/cgi-tmp/munin-cgi-graph/*': No such file or directory
check /var/lib/munin/datafile
check /var/lib/munin/datafile.storable
check /var/lib/munin/graphs
check /var/lib/munin/htmlconf.storable
check /var/lib/munin/limits
check /var/lib/munin/limits.storable
check /var/lib/munin/munin
check /var/lib/munin/munin-graph.stats
check /var/lib/munin/munin-stats.stats
check /var/lib/munin/munin-update.stats
check /var/lib/munin/state-munin-betlogbeast.storable
check /var/lib/munin/state-munin-betlogbrick.storable
check /var/lib/munin/state-munin-betlognuc.storable
check /var/lib/munin/state-munin-p3bplus.storable
check /var/lib/munin/state-munin-pi3bplus.storable
check /var/lib/munin/state-munin-pi3b.storable
check /var/lib/munin/state-munin-pi4b.storable
check /var/lib/munin/state-munin-pizerocam0.storable
check /var/lib/munin/state-munin-pizerocam1.storable
check /var/lib/munin/state-munin-pizerocam2.storable
check /var/lib/munin/state-munin-pizerocam3.storable
check /var/lib/munin/state-munin-router.storable
check miscellaneous
Check done. Please note that this script only checks most things,
not all things.
Please also note that this script may be buggy.
yep
root@betlognuc:/home/user# lso /var/lib/munin/datafile /var/lib/munin/munin-graph.stats /var/lib/munin/munin-update.stats
644 -rw-r--r-- 1 munin munin 1081419 Nov 23 10:20 /var/lib/munin/datafile
644 -rw-r--r-- 1 munin munin 8 Nov 23 10:21 /var/lib/munin/munin-graph.stats
644 -rw-r--r-- 1 munin munin 101 Nov 23 10:20 /var/lib/munin/munin-update.stats
and yep confirmed
Restarting
root@betlognuc:/home/user# systemctl start munin munin-node apache2
root@betlognuc:/home/user# systemctl status munin munin-node apache2
shows normal operational results.
But because munin-cron has already kicked in while I was writing, the permissions are now broken again:
root@betlognuc:/home/user# munin-check -f
check /var/cache/munin/www
check /var/lib/munin/cgi-tmp
ls: cannot access '/var/lib/munin/cgi-tmp/munin-cgi-graph/*': No such file or directory
# /var/lib/munin/cgi-tmp/munin-cgi-graph/* : Wrong owner ( != munin)
chown: cannot access '/var/lib/munin/cgi-tmp/munin-cgi-graph/*': No such file or directory
check /var/lib/munin/datafile
check /var/lib/munin/datafile.storable
check /var/lib/munin/graphs
check /var/lib/munin/htmlconf.storable
check /var/lib/munin/limits
check /var/lib/munin/limits.storable
check /var/lib/munin/munin
check /var/lib/munin/munin-graph.stats
check /var/lib/munin/munin-stats.stats
check /var/lib/munin/munin-update.stats
check /var/lib/munin/munin-update.stats.tmp
check /var/lib/munin/state-munin-betlogbeast.storable
check /var/lib/munin/state-munin-betlogbrick.storable
check /var/lib/munin/state-munin-betlognuc.storable
check /var/lib/munin/state-munin-p3bplus.storable
check /var/lib/munin/state-munin-pi3bplus.storable
check /var/lib/munin/state-munin-pi3b.storable
check /var/lib/munin/state-munin-pi4b.storable
check /var/lib/munin/state-munin-pizerocam0.storable
check /var/lib/munin/state-munin-pizerocam1.storable
check /var/lib/munin/state-munin-pizerocam2.storable
check /var/lib/munin/state-munin-pizerocam3.storable
check /var/lib/munin/state-munin-router.storable
check miscellaneous
# /var/lib/munin/datafile : Wrong permissions (664 != 644)
# /var/lib/munin/munin-graph.stats : Wrong permissions (664 != 644)
# /var/lib/munin/munin-update.stats : Wrong permissions (664 != 644)
Check done. Please note that this script only checks most things,
not all things.
Please also note that this script may be buggy.
2/2) returning to /var/lib/munin/cgi-tmp/munin-cgi-graph/*
Cron complains
Date: Thu, 23 Nov 2023 03:32:01 +1000 (AEST)
From: Cron Daemon <[email protected]>
To: [email protected]
Subject: Cron <www-data@betlognuc> cgitmpdir=$({ cat /etc/munin/munin.conf /etc/munin/munin-conf.d/* 2>/dev/null || true; } | sed -nE 's/^\s*cgitmpdir\s+(\S.*)$/\1/p' | tail -1); cgitmpdir=${cgitmpdir:-/var/lib/munin/cgi-tmp}; if [ -d
"$cgitmpdir" ]; then find "$cgitmpdir/" -type f -mtime +1 -delete; find "$cgitmpdir/" -mindepth 1 -type d -empty -delete; fi
find: cannot delete ‘/var/lib/munin/cgi-tmp/munin-cgi-graph’: Permission denied
It's a little odd and probably cron-pertinent that these mails are timestamped 03:32:01 of whatever day they arrive.
munin-check seems to be inherently incorrect:
ls: cannot access '/var/lib/munin/cgi-tmp/munin-cgi-graph/*': No such file or directory
# /var/lib/munin/cgi-tmp/munin-cgi-graph/* : Wrong owner ( != munin)
chown: cannot access '/var/lib/munin/cgi-tmp/munin-cgi-graph/*': No such file or directory
ie:
(side note: I have needed to do this in the past, and it doesn't seem to get changed 'by itself' but I'll do it again here just to be sure: chmod g+w /var/lib/munin/cgi-tmp/munin-cgi-graph/)
If munin-check gets it's way I have no dynazoom graph rendering:
chown munin:munin /var/lib/munin/cgi-tmp/munin-cgi-graph/
But this (NOT what munin-check wants) makes dynazoom work:
chown munin:www-data /var/lib/munin/cgi-tmp/munin-cgi-graph/
So:
- permissions are being forced on each
munin-croncycle for (at least):
/var/lib/munin/datafile
/var/lib/munin/munin-graph.stats
/var/lib/munin/munin-update.stats munin-checkdoes not know the correct apache2-compatible perms for/var/lib/munin/cgi-tmp/munin-cgi-graph/
ps: The only error I see across all of the logs is:
/var/log/munin/munin-update.log
2023/11/23 11:08:09 [ERROR] Unable to create '/var/lib/munin/munin/pi4b-df_inode-devtmpfs-g.rrd': you must define at least one Round Robin Archive
Which I assume should happen automatically on node discovery, but in light of the above: seems maybe a permission issue.
from munin.
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from munin.