Package: rrdcached
Version: 1.6.0-1+b2
Severity: normal
Hi,
This is probably an upstream bug, with a workaround in Stretch.
Upon upgrading from Jessie to Stretch ganglia gmetad could no longer use
rrdcached to
write rrds .
Here's an example line from /var/log/messages:
gangle /usr/sbin/gmetad[3554]: RRD_update
(/var/lib/ganglia/rrds/GLOW-CMS/s17n08.hep.wisc.edu/cpu_speed.rrd): rrdcached:
Permission denied.
After fiddling with permissions on the socket, file, etc I found that
changing the command line order
of the sockets works around the problem. It appears as though the limited
socket needs to be specified
first.
# WORKS:
/usr/bin/rrdcached -w 3600 -f 7200 -j /var/lib/rrdcached/journal/ \
-s ganglia -m 664 -l unix:/var/run/rrdcached.sock \
-s www-data -m 777 -P FLUSH,STATS,HELP,FETCH -l
unix:/var/run/rrdcached.limited.sock \
-b /var/lib/ganglia/rrds -B -p /var/run/rrdcached.pid
# DOES NOT WORK:
/usr/bin/rrdcached -w 3600 -f 7200 -j /var/lib/rrdcached/journal/ \
-s www-data -m 777 -P FLUSH,STATS,HELP,FETCH -l
unix:/var/run/rrdcached.limited.sock \
-s ganglia -m 664 -l unix:/var/run/rrdcached.sock \
-b /var/lib/ganglia/rrds -B -p /var/run/rrdcached.pid
Since -P flags in the limited socket can only be added to
/etc/defaults/rrdcache BASE_OPTIONS,
the way to work around this in Stretch is to place BASE_OPTIONS in
/etc/init.d/rrdcached after
the socket options like this:
RRDCACHED_OPTIONS="\
# former location of $BASE_OPTIONS
${NETWORK_OPTIONS} \
${WRITE_TIMEOUT:+-w ${WRITE_TIMEOUT}} \
${WRITE_JITTER:+-z ${WRITE_JITTER}} \
${WRITE_THREADS:+-t ${WRITE_THREADS}} \
${BASE_PATH:+-b ${BASE_PATH}} \
${JOURNAL_PATH:+-j ${JOURNAL_PATH}} \
${DAEMON_GROUP:+-G ${DAEMON_GROUP}} \
${DAEMON_USER:+-U ${DAEMON_USER}} \
-p ${PIDFILE} \
${SOCKFILE:+${SOCKGROUP:+-s ${SOCKGROUP}} ${SOCKMODE:+-m ${SOCKMODE}} -l
unix:${SOCKFILE}} \
${BASE_OPTIONS}
"
(Also notice addition of FETCH on limited socket. Without this ganglia-web
cannot draw all the graphs.)
Thanks!
C.
-- System Information:
Debian Release: 9.3
APT prefers stable-updates
APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)
Kernel: Linux 4.9.0-5-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8),
LANGUAGE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
Versions of packages rrdcached depends on:
ii libc62.24-11+deb9u1
ii libcairo21.14.8-1
ii libdbi1 0.9.0-4+deb9u1
ii libglib2.0-0 2.50.3-2
ii libpango-1.0-0 1.40.5-1
ii libpangocairo-1.0-0 1.40.5-1
ii libpng16-16 1.6.28-1
ii librrd8 1.7.0-1
ii libxml2 2.9.4+dfsg1-2.2+deb9u2
rrdcached recommends no packages.
rrdcached suggests no packages.
-- Configuration Files:
/etc/default/rrdcached changed:
BASE_OPTIONS="-f 7200 -s www-data -m 777 -P FLUSH,STATS,HELP,FETCH -l
unix:/var/run/rrdcached.limited.sock"
-- no debconf information
