[Users] Problems with precreated images and routing

[Volker Janzen]

Hi,

I don't think that this mailinglist is the correct place for questions about a lxc problem, that has nothing to do with ovz.

However, I also tried what happens when converting from ovz to lxc (Proxmox). From my experience I can confirm that it can cause serious problems when converting a multi IP ovz container to lxc. I was not able to do this with success. I had to split up services to multiple lxc containers with only one IPv4/6 each. No other option worked for me and I gave up finding the reason.


Regards
    Volker


> Am 20.07.2016 um 11:13 schrieb Christian Blaich <christian at blaich.eu>:
> 
> Hey,
> 
> i'm doing a few tests with migrating ovz containers to lxc. Learning about advantages and disadvantages of both.
> Here are the instructions that i use to convert the containers: https://pve.proxmox.com/wiki/Convert_OpenVZ_to_LXC
> The main point that i struggle is to switch from venets to the eths of lxc.
> 
> Running the container with one eth0 and one ip works perfect. But with a second interface eth1 and a second ip there is some routing problem. The second ip is not pingable from outside.
> I'm using precreated images from here https://wiki.openvz.org/Download/template/precreated (Ubuntu 12.04 and Ubuntu 14.04)
> 
> interfaces inside the container:
> auto eth0
> iface eth0 inet static
>         address xx.xx.xx.xx
>         netmask 255.255.255.255
> # --- BEGIN PVE ---
>         post-up ip route add xx.xx.xx.254 dev eth0
>         post-up ip route add default via xx.xx.xx.254 dev eth0
>         pre-down ip route del default via xx.xx.xx.254 dev eth0
>         pre-down ip route del xx.xx.xx.254 dev eth0
> # --- END PVE ---
> auto eth1 
> iface eth1 inet static
>         address xx.xx.xx.xx
>         netmask 255.255.255.255
>  
> Original templates from lxc don't have that problem. My question - is there any setting inside the container template that forbids the routing to eth1?
> 
> Thank you, chris
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