RELNOTE: MaaS 1.7 changes curtin preseed filename schema and network/interfaces override placement

[JuanJo Ciarlante]

To fix our curtin preseed files for maas 1.7 (from 1.5), we had to:

#1 add _${release} in the middle to /etc/maas/preseeds/ filenames, ie:
* working in 1.5:
curtin_userdata_amd64_generic_trusty_alderaan.local
* fixed for 1.7:
curtin_userdata_ubuntu_amd64_generic_trusty_alderaan.local

#2 move explicit /etc/network/interfaces overwriting to the 'far' end of late_commands:
* working in 1.5:
late_commands:
     bonding_02: ["curtin", "in-target", "--", "wget", "-O", "/etc/network/interfaces", "http://[...snip...]"]

* fixed for 1.7:
late_commands:
     zz_write_ifaces: ["curtin", "in-target", "--", "wget", "-O", "/etc/network/interfaces", "http://[...snip...]"]

[Julian Edwards (julian-edwards)]

I think #2 is a Curtin change.

[Blake Rouse (blake-rouse)]

Actually #2 is a MAAS thing from the IPv6 work,it only affects Ubuntu.

We need to release note this.

[Julian Edwards (julian-edwards)]

On Thursday 23 Oct 2014 01:40:28 you wrote:
> Actually #2 is a MAAS thing from the IPv6 work,it only affects Ubuntu.
>
> We need to release note this.

Ok thanks. Is there any fix we can make to help users?

[Blake Rouse (blake-rouse)]

Maybe on upgrade, we could rename there files for them. But I think that would be very hard to get just right.