Hi Martin, Thanks a lot for your quick response.
I have been making some tests but it looks your approach does not work at all: This is my simple configuration: cat << EOT > /etc/monit.d/monit_vdicube check filesystem check_cephfs with path /mnt/vdicube_ceph_fs start program = "/bin/mount -t ceph -o name=admin -o secret=AQDenzBcEyQ8BBAABQjoGn3DTnKN2v5hZm7gMw== 192.168.100.104:6789, 192.168.100.105:6789,192.168.100.106:6789:/ /mnt/vdicube_ceph_fs" stop program = "/bin/umount -f -l /mnt/vdicube_ceph_fs" IF CHANGED FSFLAGS THEN start EOT In this case when ceph monitors servers (192.168.100.104:6789, 192.168.100.105:6789,192.168.100.106:6789) everything works fine. Start, stop, restart works great. Nevertheless, If I loose connectivity with ceph servers (I manually stop them) the monit service doesn't find out and continues showing "Ok" when, of course, none of the internal data can be acceeded. This can be normal because the mount instruction is still there: [root@vdicnode04 mnt]# mount | grep ceph 192.168.100.104:6789,192.168.100.105:6789,192.168.100.106:6789:/ on /mnt/vdicube_ceph_fs type ceph (rw,relatime,name=admin,secret=<hidden>,acl,wsize=16777216) In this scenario, If I execute the stop command as root manually from command line: /bin/umount -f -l /mnt/vdicube_ceph_fs It umounts de FS immediately, however, If I stop it using the monit CLI: [root@vdicnode04 /]# monit stop check_cephfs [root@vdicnode04 /]# monit status Monit 5.25.1 uptime: 4m Filesystem 'check_cephfs' status OK - stop pending monitoring status Monitored monitoring mode active on reboot start filesystem type ceph filesystem flags rw,relatime,name=admin,secret=<hidden>,acl,wsize=16777216 permission 755 uid 27 gid 27 block size 4 MB space total 228 MB (of which 0.0% is reserved for root user) space free for non superuser 64 MB [28.1%] space free total 64 MB [28.1%] inodes total 165 inodes free -1 [-0.6%] data collected Fri, 08 Mar 2019 00:35:28 System 'vdicnode04' status OK monitoring status Monitored monitoring mode active on reboot start load average [0.02] [0.20] [0.21] cpu 1.2%us 1.0%sy 0.0%wa memory usage 514.8 MB [28.3%] swap usage 0 B [0.0%] uptime 59m boot time Thu, 07 Mar 2019 23:40:21 data collected Fri, 08 Mar 2019 00:35:28 [root@vdicnode04 /]# It gets stuck in the "stop pending" status. In logs I can see the following: [CET Mar 8 00:39:55] info : 'check_cephfs' stop on user request [CET Mar 8 00:39:55] info : Monit daemon with PID 121791 awakened Of course, mount is still there until I execute manually the umount command: [root@vdicnode04 /]# mount | grep ceph 192.168.100.104:6789,192.168.100.105:6789,192.168.100.106:6789:/ on /mnt/vdicube_ceph_fs type ceph (rw,relatime,name=admin,secret=<hidden>,acl,wsize=16777216) [root@vdicnode04 /]# umount -f -l /mnt/vdicube_ceph_fs [root@vdicnode04 /]# mount | grep ceph [root@vdicnode04 /]# Even in this situation, monit status is still "stop pending" [root@vdicnode04 /]# monit status Monit 5.25.1 uptime: 4m Filesystem 'check_cephfs' status OK - stop pending monitoring status Monitored Any help will be welcome! Óscar. El jue., 7 mar. 2019 a las 22:06, mart...@tildeslash.com (< mart...@tildeslash.com>) escribió: > Hi, > > we didn't test with ceph, you can try generic configuration, for example: > > check filesystem myfs with path /mydata > start program = ... #note: set the start command (mount) > stop program = ... #note: set the stop command > (umount) > > It is possible that monit won't be able to collect I/O statistics ... in > that case we can implement support for ceph. > > Best regards, > Martin > > > > On 7 Mar 2019, at 15:55, Oscar Segarra <oscar.sega...@gmail.com> wrote: > > > > Hi, > > > > I'd like to mount a cephfs filesystem when it is available (just > checking ceph metadata server tcp port). > > > > And, on poweroff the server , i'd like to force umount the previous > cephfs volume if it is already mounted. This is because if ceph metadata > server is not available, the server loops infinitely trying to umount the > cephfs mount point. > > > > Can theese two use cases be implemented with monit? > > > > Thanks a lot in advance > > Óscar > > -- > > To unsubscribe: > > https://lists.nongnu.org/mailman/listinfo/monit-general > > > -- > To unsubscribe: > https://lists.nongnu.org/mailman/listinfo/monit-general
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