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[Bug 1602373] Re: nova cloud-init doesn't always land files that one expects

To: yahoo-eng-team@xxxxxxxxxxxxxxxxxxx
From: Amrith <1602373@xxxxxxxxxxxxxxxxxx>
Date: Tue, 12 Jul 2016 18:06:53 -0000
Reply-to: Bug 1602373 <1602373@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
** Project changed: nova => cloud-init

** Summary changed:

- nova cloud-init doesn't always land files that one expects
+ cloud-init doesn't always land files that one expects

** Description changed:

  Trove launches instances using the servers.create() API with some files.
  Trove provides a dictionary of files that it wants on the instance and
- most of the time this works.
+ most of the time this works. Nova passes them to the launched VM as
+ metadata on config drive.
  
- Sometimes though, it doesn't. With some help from jroll and mriedem, I
- gathered the following information.
+ Sometimes though, it doesn't.
  
  When injection fails, I see a cloud-init.log that looks like this:
  
  https://gist.github.com/amrith/7566d8fef4b6e813cca77e5e3b1f1d5a
  
  When injection succeeds, I see a cloud-init.log that looks like this:
  
  https://gist.github.com/amrith/50d9e3050d88ec51e13b0a510bd718c3
  
  Observe that the one that succeeds properly injects three files:
  
  /etc/injected_files (which is something I added just for debugging)
  /etc/trove/conf.d/... two files here ...
  
  On a machine where this injection failed:
  
  root@m10:/tmp/zz/openstack/content# ls -l /etc/trove
  total 4
  drwxr-xr-x 2 amrith root 4096 Jul 12 16:55 conf.d
  root@m10:/tmp/zz/openstack/content# ls -l /etc/trove/conf.d/
  total 4
  root@m10:/tmp/zz/openstack/content#
  
  Clearly, no files made it over. Yet, the files are definitely there on
  the config drive ...
  
  I've mounted the config drive.
  
  root@m10:/tmp/zz/openstack/content# mount | grep zz
  /dev/sr0 on /tmp/zz type iso9660 (ro,relatime)
  
  root@m10:/tmp/zz/openstack/content# cd /tmp/zz
  root@m10:/tmp/zz# find .
  .
  ./ec2
  ./ec2/2009-04-04
  ./ec2/2009-04-04/meta-data.json
  ./ec2/latest
  ./ec2/latest/meta-data.json
  ./openstack
  ./openstack/2012-08-10
  ./openstack/2012-08-10/meta_data.json
  ./openstack/2013-04-04
  ./openstack/2013-04-04/meta_data.json
  ./openstack/2013-10-17
  ./openstack/2013-10-17/meta_data.json
  ./openstack/2013-10-17/vendor_data.json
  ./openstack/2015-10-15
  ./openstack/2015-10-15/meta_data.json
  ./openstack/2015-10-15/network_data.json
  ./openstack/2015-10-15/vendor_data.json
  ./openstack/2016-06-30
  ./openstack/2016-06-30/meta_data.json
  ./openstack/2016-06-30/network_data.json
  ./openstack/2016-06-30/vendor_data.json
  ./openstack/content
  ./openstack/content/0000
  ./openstack/content/0001
  ./openstack/content/0002
  ./openstack/latest
  ./openstack/latest/meta_data.json
  ./openstack/latest/network_data.json
  ./openstack/latest/vendor_data.json
  
- 
  root@m10:/tmp/zz# cd openstack/latest/
  root@m10:/tmp/zz/openstack/latest# cat meta_data.json
  {"files": [{"path": "/etc/injected_files", "content_path": "/content/0000"}, {"path": "/etc/trove/conf.d/guest_info.conf", "content_path": "/content/0001"}, {"path": "/etc/trove/conf.d/trove-guestagent.conf", "content_path": "/content/0002"}], "admin_pass": "pf2ng7tT8JSt", "random_seed": "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", "uuid": "38731f42-611e-465f-b3e4-1e80aa623caf", "availability_zone": "nova", "hostname": "m10.novalocal", "launch_index": 0, "devices": [], "project_id": "eeec3236ef004821a77ccbd26b81f18f", "name": "m10"}
  
  root@m10:/tmp/zz/openstack/latest#
  
  Sure enough, the files I want are in content/0000, 0001 and 0002
  
  root@m10:/tmp/zz/openstack/content# ls -l
  total 4
  -r--r--r-- 1 root root 1329 Jul 12 16:55 0000
  -r--r--r-- 1 root root  127 Jul 12 16:55 0001
  -r--r--r-- 1 root root 1050 Jul 12 16:55 0002

** Changed in: cloud-init
       Status: Invalid => New

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https://bugs.launchpad.net/bugs/1602373

Title:
  cloud-init doesn't always land files that one expects

Status in cloud-init:
  New

Bug description:
  Trove launches instances using the servers.create() API with some
  files. Trove provides a dictionary of files that it wants on the
  instance and most of the time this works. Nova passes them to the
  launched VM as metadata on config drive.

  Sometimes though, it doesn't.

  When injection fails, I see a cloud-init.log that looks like this:

  https://gist.github.com/amrith/7566d8fef4b6e813cca77e5e3b1f1d5a

  When injection succeeds, I see a cloud-init.log that looks like this:

  https://gist.github.com/amrith/50d9e3050d88ec51e13b0a510bd718c3

  Observe that the one that succeeds properly injects three files:

  /etc/injected_files (which is something I added just for debugging)
  /etc/trove/conf.d/... two files here ...

  On a machine where this injection failed:

  root@m10:/tmp/zz/openstack/content# ls -l /etc/trove
  total 4
  drwxr-xr-x 2 amrith root 4096 Jul 12 16:55 conf.d
  root@m10:/tmp/zz/openstack/content# ls -l /etc/trove/conf.d/
  total 4
  root@m10:/tmp/zz/openstack/content#

  Clearly, no files made it over. Yet, the files are definitely there on
  the config drive ...

  I've mounted the config drive.

  root@m10:/tmp/zz/openstack/content# mount | grep zz
  /dev/sr0 on /tmp/zz type iso9660 (ro,relatime)

  root@m10:/tmp/zz/openstack/content# cd /tmp/zz
  root@m10:/tmp/zz# find .
  .
  ./ec2
  ./ec2/2009-04-04
  ./ec2/2009-04-04/meta-data.json
  ./ec2/latest
  ./ec2/latest/meta-data.json
  ./openstack
  ./openstack/2012-08-10
  ./openstack/2012-08-10/meta_data.json
  ./openstack/2013-04-04
  ./openstack/2013-04-04/meta_data.json
  ./openstack/2013-10-17
  ./openstack/2013-10-17/meta_data.json
  ./openstack/2013-10-17/vendor_data.json
  ./openstack/2015-10-15
  ./openstack/2015-10-15/meta_data.json
  ./openstack/2015-10-15/network_data.json
  ./openstack/2015-10-15/vendor_data.json
  ./openstack/2016-06-30
  ./openstack/2016-06-30/meta_data.json
  ./openstack/2016-06-30/network_data.json
  ./openstack/2016-06-30/vendor_data.json
  ./openstack/content
  ./openstack/content/0000
  ./openstack/content/0001
  ./openstack/content/0002
  ./openstack/latest
  ./openstack/latest/meta_data.json
  ./openstack/latest/network_data.json
  ./openstack/latest/vendor_data.json

  root@m10:/tmp/zz# cd openstack/latest/
  root@m10:/tmp/zz/openstack/latest# cat meta_data.json
  {"files": [{"path": "/etc/injected_files", "content_path": "/content/0000"}, {"path": "/etc/trove/conf.d/guest_info.conf", "content_path": "/content/0001"}, {"path": "/etc/trove/conf.d/trove-guestagent.conf", "content_path": "/content/0002"}], "admin_pass": "pf2ng7tT8JSt", "random_seed": "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", "uuid": "38731f42-611e-465f-b3e4-1e80aa623caf", "availability_zone": "nova", "hostname": "m10.novalocal", "launch_index": 0, "devices": [], "project_id": "eeec3236ef004821a77ccbd26b81f18f", "name": "m10"}

  root@m10:/tmp/zz/openstack/latest#

  Sure enough, the files I want are in content/0000, 0001 and 0002

  root@m10:/tmp/zz/openstack/content# ls -l
  total 4
  -r--r--r-- 1 root root 1329 Jul 12 16:55 0000
  -r--r--r-- 1 root root  127 Jul 12 16:55 0001
  -r--r--r-- 1 root root 1050 Jul 12 16:55 0002

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References

[Bug 1602373] [NEW] cloud-init doesn't always land files that one expects
From: Amrith, 2016-07-12