Hi Carlos,
Carlos Martín Sánchez wrote on 21/02/11 14:04:
Hi Nikolay,
Could you paste the output of
ssh <OVZ_cluster_node> "/var/tmp/one/im/run_probes ovz"
?
[oneadmin@FN]$ ssh edugrid10 "/tmp/one/im/run_probes ovz"
Warning: Permanently added '<CN_hostname,CN_IP>' (RSA) to the list of
known hosts.
[oneadmin@FN]$
i.e. it looks like the command above returns space character.
Nikolay.
Change /var/tmp/one to your SCRIPTS_REMOTE_DIR if you changed it in your
oned.conf file.
Regards,
Carlos.
--
Carlos Martín, MSc
Project Major Contributor
OpenNebula - The Open Source Toolkit for Cloud Computing
www.OpenNebula.org <http://www.opennebula.org/> | [email protected]
<mailto:[email protected]>
On 18 February 2011 17:27, <[email protected] <mailto:[email protected]>>
wrote:
Dear all,
Trying to implement IM driver for OpenVZ cluster nodes I faced with
the following problem:
$ onehost list
ID NAME CLUSTER RVM TCPU FCPU
ACPU TMEM FMEM STAT
2 <cluster_node1> xen_x64 0 200 200
200 3.1G 128M on
3 <cluster_node2> ovz_x32 0 0 0
100 0K 0K err
oned.log:
[...]
Fri Feb 18 18:54:47 2011 [InM][D]: Host 3 successfully monitored.
Fri Feb 18 18:54:47 2011 [ONE][E]: syntax error, unexpected $end,
expecting VARIABLE at line 2, columns 1:2
Fri Feb 18 18:54:47 2011 [InM][E]: Error parsing host information:
[...]
I added oneadmin user into /etc/sudoers file and commented out the
line "Defaults requiretty":
$ egrep "oneadmin|requiretty" /etc/sudoers
#Defaults requiretty
oneadmin ALL=(ALL) NOPASSWD: ALL
(I couldn't figure out more secure and elegant way to get info from
OpenVZ host having libvirt interface installed. Any suggestions on
that?)
and did the following changes in ovz.rb file:
$ diff /usr/lib/one/remotes/im/ovz.d/ovz.rb
/usr/lib/one/remotes/im/kvm.d/kvm.rb
29c29
< nodeinfo_text = `sudo virsh -c openvz:///system nodeinfo`
---
> nodeinfo_text = `virsh -c qemu:///system nodeinfo`
90c90
< print_info("HYPERVISOR","ovz")
---
> print_info("HYPERVISOR","kvm")
"sudo virsh -c openvz:///system nodeinfo" running under oneadmin
user from front-end node gives the following output:
[oneadmin@<ONE_front-end>$ ssh <OVZ_cluster_node> sudo virsh -c
openvz:///system nodeinfo
CPU model: i686
CPU(s): 1
CPU frequency: 2793 MHz
CPU socket(s): 1
Core(s) per socket: 1
Thread(s) per core: 1
NUMA cell(s): 1
Memory size: 2056216 kB
I was hoping to apply the same solution as written in "KVM Driver
Guide 2.0" (http://opennebula.org/documentation:rel2.0:kvmg) since
ONE uses the libvirt interface as well to interact with KVM hosts:
...The following steps are required in the cluster nodes to get the
KVM driver running:
[...]
* The user with access to these remotes hosts on behalf of
OpenNebula (typically <oneadmin>) has to pertain to the <libvirtd>
and <kvm> groups in order to use the deaemon and be able to launch VMs.
but I can't following that way since there is no libvirt group and
libvirtd is run under root (I had to build libvirt from tarball
available at its home page since CentOS has a pretty old one in its
repos without openvz support).
Any help on that is highly appreciated!
Nikolay.
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