[one-users] monitor_ds.sh in a shared storage environement

[Armin Deliomini]

Hi!

Platform: Ubuntu 12.04 + KVM
Opennebula 4.6.1

I recently upgraded from opennebula 4.2 to 4.6.1 ending up in hosts not
beeing monitored anymore. After some investigation I found out, that there
is a new remote monitoring script, monitor_ds.sh.

I have a shared storage environment (some central Netapps sharing NFS) and
so my question is: the script is executed on all the hosts, so all hosts
run a du -sLm on all datastores and the base_path (/var/lib/on/datastores)
which can consume quite some storage performance unnecessarily.

In my case hosts haven't been monitored at all, because there was a
driectory containing millions of small files in one of the datastores (used
as a temp location without thinking of the consequences) and du would never
finish in time.

There are two questions:

 - is it needed to check the datastores from every single host (if it is a
shared environment and the opennebula server itself has access to the
datastores)?

 - why is the base_path checked at all? isn't it enough to check the
datastores? there is du run on all the directories twice and du is very
resource consuming ...

Is there a reason for this I am missing?

Thx, Armin


-- 

runtastische Grüße · runtastic regards



*Armin Deliomini*

*Infrastructure engineer*


*Virtualization specialist*

*Storage engineer*

*DevOPS*


*OPS*

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