# \[SOLVED\] Can opennebula-frontend-5.8 and opennebula-node-host-4.14 versions be used together?

**URL:** <https://forum.opennebula.io/t/solved-can-opennebula-frontend-5-8-and-opennebula-node-host-4-14-versions-be-used-together/7100>\
**Category:** Installation & Configuration\
**Tags:** solved\
**Created:** [April 2, 2019, 4:20am UTC](https://forum.opennebula.io/t/solved-can-opennebula-frontend-5-8-and-opennebula-node-host-4-14-versions-be-used-together/7100 "2019-04-02T04:20:31Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![you-can-change](https://yyz1.discourse-cdn.com/flex031/user_avatar/forum.opennebula.io/you-can-change/32/6000_2.png) [@you-can-change](https://forum.opennebula.io/u/you-can-change)\
**Post date:** [April 2, 2019, 4:20am UTC](https://forum.opennebula.io/t/solved-can-opennebula-frontend-5-8-and-opennebula-node-host-4-14-versions-be-used-together/7100/1 "2019-04-02T04:20:31Z")

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For some reasons, the KVM host (centos6.5) cannot be upgraded to centos7.

Centos6 on the official website only supports OpenNebula version 4.14 at the highest level.

I want to deploy opennebula-5.8 with CentOS 7 to manage the KVM host of CentOS 6.5. Is that all right?

When I tried to do this, I added the wrong message when adding the host as follows:  
Tue Apr 2 12:11:18 2019 [Z0][ONE][E]: Error monitoring Host host3 (16): ./pci.rb:33: uninitialized constant NAME (NameError)  
ERROR MESSAGE --8\<------  
Error executing pci.rb  
ERROR MESSAGE ------\>8–  
ARCH=x86\_64  
MODELNAME=“Intel(R) Xeon(R) CPU E3-1220 v5 @ 3.00GHz”  
HYPERVISOR=kvm  
TOTALCPU=400  
CPUSPEED=3000  
TOTALMEMORY=3924416  
USEDMEMORY=203356  
FREEMEMORY=3721060  
FREECPU=400  
USEDCPU=0  
NETRX=106478431  
NETTX=2733633  
DS\_LOCATION\_USED\_MB=914  
DS\_LOCATION\_TOTAL\_MB=9843  
DS\_LOCATION\_FREE\_MB=8429  
DS = [  
ID = 0,  
USED\_MB = 914,  
TOTAL\_MB = 9843,  
FREE\_MB = 8429  
]  
HOSTNAME=host3

Haha, my English is not good, the translation from Google.

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**Author:** ![ahuertas](https://yyz1.discourse-cdn.com/flex031/user_avatar/forum.opennebula.io/ahuertas/32/7487_2.png) [@ahuertas](https://forum.opennebula.io/u/ahuertas)\
**Post date:** [April 2, 2019, 7:08am UTC](https://forum.opennebula.io/t/solved-can-opennebula-frontend-5-8-and-opennebula-node-host-4-14-versions-be-used-together/7100/2 "2019-04-02T07:08:34Z")

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Hi @you-can-change

In OpenNebula 5.8 only CentOS 7 is supported, so maybe there is a compatibility error with CentOS 6, [here](http://docs.opennebula.org/5.8/intro_release_notes/release_notes/platform_notes.html) you can see all the supported platforms.

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**Author:** ![you-can-change](https://yyz1.discourse-cdn.com/flex031/user_avatar/forum.opennebula.io/you-can-change/32/6000_2.png) [@you-can-change](https://forum.opennebula.io/u/you-can-change)\
**Post date:** [April 2, 2019, 12:50pm UTC](https://forum.opennebula.io/t/solved-can-opennebula-frontend-5-8-and-opennebula-node-host-4-14-versions-be-used-together/7100/3 "2019-04-02T12:50:45Z")

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Thanks !!!

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**Author:** ![system](https://canada1.discourse-cdn.com/flex031/uploads/opennebula/original/2X/1/14d66f1130b9cd292905f575da9b68a9f574dd03.png) [@system](https://forum.opennebula.io/u/system)\
**Post date:** [July 8, 2025, 3:53pm UTC](https://forum.opennebula.io/t/solved-can-opennebula-frontend-5-8-and-opennebula-node-host-4-14-versions-be-used-together/7100/4 "2025-07-08T15:53:49Z")

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