lxc
The lxcfs seems to have a Memory Leak
lxcfs Version: lxcfs -v 3.1.2
The Problem describe:
My lxcfs runs for a while，i can see a increase about it memory, and it doesn't seems to be going to recycle, keep increasing; It will be normal after i must to restart lxcfs
#RSS #top -H -b -n 1 | grep lxcfs|head -n 1|awk '{print $6}' 1632
#RSS #top -H -b -n 1 | grep lxcfs|head -n 1|awk '{print $6}' 76.3g
Please help me!
#pmap -x 293408 | grep "anon" | grep "-----" | wc -l 2399 #pmap -x 293408 | more 293408: /usr/bin/lxcfs /var/lib/lxcfs/lxcfs/ Address Kbytes RSS Dirty Mode Mapping 0000556779200000 16 16 0 r-x-- lxcfs 0000556779404000 4 4 4 r---- lxcfs 0000556779405000 4 4 4 rw--- lxcfs 000055677a289000 2844 2064 2064 rw--- [ anon ] 00007fc7a8000000 1588 372 372 rw--- [ anon ] 00007fc7a818d000 63948 0 0 ----- [ anon ] 00007fc7ac000000 1540 4 4 rw--- [ anon ] 00007fc7ac181000 63996 0 0 ----- [ anon ] 00007fc7b4000000 2448 652 652 rw--- [ anon ] 00007fc7b4264000 63088 0 0 ----- [ anon ] 00007fc7bc000000 2012 4 4 rw--- [ anon ] 00007fc7bc1f7000 63524 0 0 ----- [ anon ] 00007fc7c4000000 6840 132 132 rw--- [ anon ] 00007fc7c46ae000 58696 0 0 ----- [ anon ] 00007fc7cc000000 9592 972 972 rw--- [ anon ] 00007fc7cc95e000 55944 0 0 ----- [ anon ] 00007fc7d4000000 7092 2836 2836 rw--- [ anon ] 00007fc7d46ed000 58444 0 0 ----- [ anon ] 00007fc7dc000000 7064 2224 2224 rw--- [ anon ] 00007fc7dc6e6000 58472 0 0 ----- [ anon ] 00007fc7e4000000 3836 364 364 rw--- [ anon ] 00007fc7e43bf000 61700 0 0 ----- [ anon ] 00007fc7ec000000 5276 1160 1160 rw--- [ anon ] 00007fc7ec527000 60260 0 0 ----- [ anon ] 00007fc7f0000000 8624 136 136 rw--- [ anon ] 00007fc7f086c000 56912 0 0 ----- [ anon ] 00007fc7f8000000 7776 2160 2160 rw--- [ anon ] 00007fc7f8798000 57760 0 0 ----- [ anon ] 00007fc7fc000000 11728 4748 4748 rw--- [ anon ] 00007fc7fcb74000 53808 0 0 ----- [ anon ] 00007fc800000000 556 4 4 rw--- [ anon ] 00007fc80008b000 64980 0 0 ----- [ anon ] 00007fc808000000 2844 1664 1664 rw--- [ anon ] 00007fc8082c7000 62692 0 0 ----- [ anon ]
#systemctl cat lxcfs.service #/lib/systemd/system/lxcfs.service [Unit] Description=FUSE filesystem for LXC ConditionVirtualization=!container Before=lxc.service Documentation=man:lxcfs(1)
[Service] Environment="LXCFS=/var/lib/lxcfs/lxcfs/" #Environment="INFO_FROM_ENV_PREFIX=COLOCATION" ExecStartPre=/bin/mkdir -p $LXCFS ExecStart=/usr/bin/lxcfs $LXCFS ExecStartPost=-/bin/bash /usr/local/lxcfs/bin/container_remount_lxcfs.sh KillMode=process Restart=on-failure ExecStopPost=-/bin/fusermount -u $LXCFS Delegate=yes
[Install] WantedBy=multi-user.target
#cat /usr/local/lxcfs/bin/container_remount_lxcfs.sh #!/bin/bash
PROCS="cpuinfo diskstats loadavg meminfo stat uptime" if [ "$LXCFSX"X == ""X ]; then LXCFS=/var/lib/lxcfs/lxcfs/ fi LXCFS_DIR=$(dirname $LXCFS)
containers=$(docker ps |grep -v '"/pause"'|awk '{print $1}'|grep -v CONTAINER) for ctn in $containers; do echo "container_remount_lxcfs.sh: check $ctn" docker inspect -f '{{.HostConfig.Binds}}' $ctn | egrep "$LXCFS_DIR[/]:" > /dev/null 2>&1 if [ $? -eq 0 ]; then echo "container_remount_lxcfs.sh: try to remount $ctn" pid=$(docker inspect -f '{{.State.Pid}}' $ctn) if [ $? -eq 0 ]; then for file in $PROCS; do nsenter --target $pid -a -- umount -l "/proc/$file" nsenter --target $pid --mount -- mount -B "$LXCFS/proc/$file" "/proc/$file" done nsenter --target $pid -a -- umount -l "/sys/devices/system/cpu/online" nsenter --target $pid --mount -- mount -B "$LXCFS/sys/devices/system/cpu/online" "/sys/devices/system/cpu/online" fi fi done
