On Fri, Jun 30, 2017 at 1:55 PM, Florian Schmid <fschmid@ubimet.com> wrote:
Hi Yaniv,
thank you for your answer! I haven't known, that there is already such a monitoring tool on ovirt.
We will sure give it a try, but we have already in our environment a monitoring tool, that's why I wanted to add those values, too.
How does collectd get this data from libvirt, when the corresponding cgroup values are empty?
Specifically for IO statistics, VDSM reads the values from libvirt[1]. cgroup limiting is possible if you define it, but is unrelated. Also note that 7.3 is a bit ancient, I'm not sure how supported it is with latest 4.1 - which I'm sure will pull new dependencies from 7.4 (for example, libvirt!). Y. [1] https://gerrit.ovirt.org/gitweb?p=vdsm.git;a=blob;f=lib/vdsm/virt/vmstats.py...
BR Florian
------------------------------ *Von: *"Yaniv Kaul" <ykaul@redhat.com> *An: *"Florian Schmid" <fschmid@ubimet.com> *CC: *"users" <users@ovirt.org> *Gesendet: *Dienstag, 27. Juni 2017 09:08:51 *Betreff: *Re: [ovirt-users] Empty cgroup files on centos 7.3 host
On Mon, Jun 26, 2017 at 11:03 PM, Florian Schmid <fschmid@ubimet.com> wrote:
Hi,
I wanted to monitor disk IO and R/W on all of our oVirt centos 7.3 hypervisor hosts, but it looks like that all those files are empty.
We have a very nice integration with Elastic based monitoring and logging - why not use it. On the host, we use collectd for monitoring. See http://www.ovirt.org/develop/release-management/features/ engine/metrics-store/
Y.
For example: ls -al /sys/fs/cgroup/blkio/machine.slice/machine-qemu\\x2d14\\ x2dHostedEngine.scope/ insgesamt 0 drwxr-xr-x. 2 root root 0 30. Mai 10:09 . drwxr-xr-x. 16 root root 0 26. Jun 09:25 .. -r--r--r--. 1 root root 0 30. Mai 10:09 blkio.io_merged -r--r--r--. 1 root root 0 30. Mai 10:09 blkio.io_merged_recursive -r--r--r--. 1 root root 0 30. Mai 10:09 blkio.io_queued -r--r--r--. 1 root root 0 30. Mai 10:09 blkio.io_queued_recursive -r--r--r--. 1 root root 0 30. Mai 10:09 blkio.io_service_bytes -r--r--r--. 1 root root 0 30. Mai 10:09 blkio.io_service_bytes_recursive -r--r--r--. 1 root root 0 30. Mai 10:09 blkio.io_serviced -r--r--r--. 1 root root 0 30. Mai 10:09 blkio.io_serviced_recursive -r--r--r--. 1 root root 0 30. Mai 10:09 blkio.io_service_time -r--r--r--. 1 root root 0 30. Mai 10:09 blkio.io_service_time_recursive -r--r--r--. 1 root root 0 30. Mai 10:09 blkio.io_wait_time -r--r--r--. 1 root root 0 30. Mai 10:09 blkio.io_wait_time_recursive -rw-r--r--. 1 root root 0 30. Mai 10:09 blkio.leaf_weight -rw-r--r--. 1 root root 0 30. Mai 10:09 blkio.leaf_weight_device --w-------. 1 root root 0 30. Mai 10:09 blkio.reset_stats -r--r--r--. 1 root root 0 30. Mai 10:09 blkio.sectors -r--r--r--. 1 root root 0 30. Mai 10:09 blkio.sectors_recursive -r--r--r--. 1 root root 0 30. Mai 10:09 blkio.throttle.io_service_bytes -r--r--r--. 1 root root 0 30. Mai 10:09 blkio.throttle.io_serviced -rw-r--r--. 1 root root 0 30. Mai 10:09 blkio.throttle.read_bps_device -rw-r--r--. 1 root root 0 30. Mai 10:09 blkio.throttle.read_iops_device -rw-r--r--. 1 root root 0 30. Mai 10:09 blkio.throttle.write_bps_device -rw-r--r--. 1 root root 0 30. Mai 10:09 blkio.throttle.write_iops_device -r--r--r--. 1 root root 0 30. Mai 10:09 blkio.time -r--r--r--. 1 root root 0 30. Mai 10:09 blkio.time_recursive -rw-r--r--. 1 root root 0 30. Mai 10:09 blkio.weight -rw-r--r--. 1 root root 0 30. Mai 10:09 blkio.weight_device -rw-r--r--. 1 root root 0 30. Mai 10:09 cgroup.clone_children --w--w--w-. 1 root root 0 30. Mai 10:09 cgroup.event_control -rw-r--r--. 1 root root 0 30. Mai 10:09 cgroup.procs -rw-r--r--. 1 root root 0 30. Mai 10:09 notify_on_release -rw-r--r--. 1 root root 0 30. Mai 10:09 tasks
I thought, I can get my needed values from there, but all files are empty.
Looking at this post: http://lists.ovirt.org/ pipermail/users/2017-January/079011.html this should work.
Is this normal on centos 7.3 with oVirt installed? How can I get those values, without monitoring all VMs directly?
oVirt Version we use: 4.1.1.8-1.el7.centos
BR Florian _______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users