How to change IP range of node and hosted engine without break anything ?
Hello, I installed an ovirt node and its hosted engine in a lab. After several difficulties to install the engine (I don't know why, I didn't have any problem in the past), I would like to change IPs of both to put them on another vlan. How can I do that without break anything ? My main fear is that the data domain used by the hosted engine use the IP of the node rather than its FQDN. I change other data domains paths, but don't find how to change this one, 'cause I can't modify it, and I can't detach / delete it to recreate another one. I didn't find how to move the engine on another data domain using the node's FQDN in its path. For now, I don't use DNS, I just updated /etc/hosts defs on both servers. If someone could help me, telling me step by step how to change IPs on each element in good order, I would be grateful. Thank you. Cheers, Stephane
Hosts' ip can be safely changed only before deployment. In your case , it would be better if you start from scratch and reinstall the host with a new image, set the IP and then redeploy the HostedEngine (both with correct VLANs). What kind of data domain do you use. Maybe it will be easier to change that than a redeploy. Best Regards, Strahil Nikolov На 23 май 2020 г. 15:56:09 GMT+03:00, "Stéphane Paillet" <spaillet@loubrusc.org> написа:
Hello,
I installed an ovirt node and its hosted engine in a lab. After several
difficulties to install the engine (I don't know why, I didn't have any
problem in the past), I would like to change IPs of both to put them on
another vlan.
How can I do that without break anything ? My main fear is that the data domain used by the hosted engine use the IP of the node rather than its
FQDN. I change other data domains paths, but don't find how to change this one, 'cause I can't modify it, and I can't detach / delete it to recreate another one. I didn't find how to move the engine on another data domain using the node's FQDN in its path. For now, I don't use DNS, I just updated /etc/hosts defs on both servers.
If someone could help me, telling me step by step how to change IPs on each element in good order, I would be grateful.
Thank you. Cheers, Stephane _______________________________________________ Users mailing list -- users@ovirt.org To unsubscribe send an email to users-leave@ovirt.org Privacy Statement: https://www.ovirt.org/privacy-policy.html oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/CMVWT44HRX56JC...
-- Изпратено от моето Андроид у-во чрез K-9 Mail. Моля да ме извините за краткият ми изказ.
Thank you for this answer and for your help. After testing several operations without successfully change the IP range, I decided to reinstall the host and the hosted engine. I was afraid that I could not reinstall the engine correctly because I had trouble installing it 3 days ago. But this time the installation went well. I must be more autonomous with this virtualization solution to be able to save / restore elements by the command line from the host, because for the moment, if I break the engine, I'm like an idiot :) And as I can't export it as an ova or take a snapshot when it's up, I don't feel comfortable to test. Regards, Stephane Le 24/05/2020 à 08:34, Strahil Nikolov a écrit :
Hosts' ip can be safely changed only before deployment.
In your case , it would be better if you start from scratch and reinstall the host with a new image, set the IP and then redeploy the HostedEngine (both with correct VLANs).
What kind of data domain do you use. Maybe it will be easier to change that than a redeploy.
Best Regards, Strahil Nikolov
На 23 май 2020 г. 15:56:09 GMT+03:00, "Stéphane Paillet" <spaillet@loubrusc.org> написа:
Hello,
I installed an ovirt node and its hosted engine in a lab. After several difficulties to install the engine (I don't know why, I didn't have any problem in the past), I would like to change IPs of both to put them on another vlan.
How can I do that without break anything ? My main fear is that the data domain used by the hosted engine use the IP of the node rather than its FQDN. I change other data domains paths, but don't find how to change this one, 'cause I can't modify it, and I can't detach / delete it to recreate another one. I didn't find how to move the engine on another data domain using the node's FQDN in its path. For now, I don't use DNS, I just updated /etc/hosts defs on both servers.
If someone could help me, telling me step by step how to change IPs on each element in good order, I would be grateful.
Thank you. Cheers, Stephane ------------------------------------------------------------------------ Users mailing list -- users@ovirt.org To unsubscribe send an email to users-leave@ovirt.org Privacy Statement: https://www.ovirt.org/privacy-policy.html oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/CMVWT44HRX56JC...
-- Изпратено от моето Андроид у-во чрез K-9 Mail. Моля да ме извините за краткият ми изказ.
-- Stéphane Paillet Sysadmin
I would recommend you to keep all Vm configs on a separate location, so you will be able to use virsh to start the VMs all by yourself (until you recover yoour Hosted Engine in a hypothetical failiure). Libvirt has ( in one of it's dirs ) all running VMs' configs - so just back them up. Also, virsh requires a pass in order to be able to execute commands. I use this alias on all my hosts: virsh='virsh -c qemu:///system?authfile=/etc/ovirt-hosted-engine/virsh_auth.conf' Then you can test with 'virsh list' (don't forget to "source" your .bashrc). Best Regards, Strahil Nikolov На 25 май 2020 г. 1:36:48 GMT+03:00, "Stéphane Paillet" <spaillet@loubrusc.org> написа:
Thank you for this answer and for your help.
After testing several operations without successfully change the IP range, I decided to reinstall the host and the hosted engine. I was afraid that I could not reinstall the engine correctly because I had trouble installing it 3 days ago. But this time the installation went well.
I must be more autonomous with this virtualization solution to be able to save / restore elements by the command line from the host, because for the moment, if I break the engine, I'm like an idiot :) And as I can't export it as an ova or take a snapshot when it's up, I don't feel comfortable to test.
Regards, Stephane
Hosts' ip can be safely changed only before deployment.
In your case , it would be better if you start from scratch and reinstall the host with a new image, set the IP and then redeploy the HostedEngine (both with correct VLANs).
What kind of data domain do you use. Maybe it will be easier to change that than a redeploy.
Best Regards, Strahil Nikolov
На 23 май 2020 г. 15:56:09 GMT+03:00, "Stéphane Paillet" <spaillet@loubrusc.org> написа:
Hello,
I installed an ovirt node and its hosted engine in a lab. After several difficulties to install the engine (I don't know why, I didn't have any problem in the past), I would like to change IPs of both to put
Le 24/05/2020 à 08:34, Strahil Nikolov a écrit : them on
another vlan.
How can I do that without break anything ? My main fear is that
the data
domain used by the hosted engine use the IP of the node rather
than its
FQDN. I change other data domains paths, but don't find how to
change
this one, 'cause I can't modify it, and I can't detach / delete
it to
recreate another one. I didn't find how to move the engine on
another
data domain using the node's FQDN in its path. For now, I don't
use DNS,
I just updated /etc/hosts defs on both servers.
If someone could help me, telling me step by step how to change
IPs on
each element in good order, I would be grateful.
Thank you. Cheers, Stephane
------------------------------------------------------------------------
Users mailing list -- users@ovirt.org To unsubscribe send an email to users-leave@ovirt.org Privacy Statement: https://www.ovirt.org/privacy-policy.html oVirt Code of Conduct:
https://www.ovirt.org/community/about/community-guidelines/
List Archives:
https://lists.ovirt.org/archives/list/users@ovirt.org/message/CMVWT44HRX56JC...
-- Изпратено от моето Андроид у-во чрез K-9 Mail. Моля да ме извините за краткият ми изказ.
participants (2)
-
Strahil Nikolov -
Stéphane Paillet