Infrastructure » sepia

We're struggling with the newer version of cloud-init that is shipped in the CentOS 7.4 cloud image. It's not playing nicely with the user-data cloud-init script that gets generated by teuthology/downburst.

cloud-init 0.7.9-9 interprets the top half of our user-data script to be an octet-stream now instead of cloud-config.

Correct user-data.txt.i file

[root@vpm099 instance]# cat user-data.txt.i 
From nobody Fri Sep 22 17:15:21 2017
Content-Type: multipart/mixed; boundary="===============0467500636575941152==" 
MIME-Version: 1.0
Number-Attachments: 2

--===============0467500636575941152==
Content-Type: text/cloud-config; charset="us-ascii" 
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
Content-Disposition: attachment; filename="part-001" 

packages: [git, wget, redhat-lsb-core]
runcmd:
- [passwd, -d, ubuntu]
- [sed, -ie, 's/HWADDR=".*"/HWADDR="52:54:00:46:7b:2b"/', /etc/sysconfig/network-scripts/ifcfg-eth0]
user: ubuntu

--===============0467500636575941152==
Content-Type: text/x-shellscript; charset="us-ascii" 
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
Content-Disposition: attachment; filename="part-002" 

#!/bin/sh
# eject the cdrom (containing the cloud-init metadata)
# as a signal that we've reached full functionality;
# this is used by ``downburst create --wait``
exec eject /dev/cdrom

--===============0467500636575941152==--

Incorrect user-data.txt.i file (CentOS 7.4)

[root@vpm041 instance]# cat user-data.txt.i 
From nobody Mon Oct  9 20:25:32 2017
Content-Type: multipart/mixed; boundary="===============1199150956588714874==" 
MIME-Version: 1.0
Number-Attachments: 2

--===============1199150956588714874==
Content-Type: application/octet-stream
MIME-Version: 1.0
Content-Disposition: attachment; filename="part-001" 

packages: [git, wget, redhat-lsb-core]
runcmd:
- [passwd, -d, ubuntu]
- [sed, -ie, 's/HWADDR=".*"/HWADDR="52:54:00:8e:8e:ea"/', /etc/sysconfig/network-scripts/ifcfg-eth0]
user: ubuntu

--===============1199150956588714874==
Content-Type: text/x-shellscript; charset="us-ascii" 
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
Content-Disposition: attachment; filename="part-002" 

#!/bin/sh
# eject the cdrom (containing the cloud-init metadata)
# as a signal that we've reached full functionality;
# this is used by ``downburst create --wait``
exec eject /dev/cdrom

--===============1199150956588714874==--

In /var/log/messages on CentOS 7.4:

Oct  9 20:25:32 localhost cloud-init: 2017-10-09 20:25:32,233 - __init__.py[WARNING]: Unhandled unknown content-type (application/octet-stream) userdata: 'packages: [git, wget, re...'

This is finally done thanks to Zack: https://github.com/ceph/teuthology/pull/1119