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[Scott Moser <smoser@xxxxxxxxxx>]

Public bug reported:

When bringing up the Azure datasource in cloud-init.service, cloud-init
tries 'service start walinuxagent'.

That previously worked fine, and the agent would start and then would
produce the certificate files that cloud-init needed (for ssh keys and
things).

I found this when testing SRU for 0.7.7-31-g65ace7b-0ubuntu1~16.04.1
but it is likely present also in 0.7.7-31-g65ace7b-0ubuntu1 (yakkety)

Now, however we see a log like:
Sep 14 14:53:18 smoser0914x [CLOUDINIT] DataSourceAzure.py[DEBUG]: Getting metadata via agent.  hostname=smoser0914x cmd=['service', 'walinuxagent', 'start']
Sep 14 14:53:18 smoser0914x [CLOUDINIT] util.py[DEBUG]: Running command hostname with allowed return codes [0] (shell=False, capture=True)
Sep 14 14:53:18 smoser0914x [CLOUDINIT] DataSourceAzure.py[DEBUG]: invoking agent: ['service', 'walinuxagent', 'start']
Sep 14 14:53:18 smoser0914x [CLOUDINIT] util.py[DEBUG]: Running command ['service', 'walinuxagent', 'start'] with allowed return codes [0] (shell=False, capture=True)
Sep 14 14:53:18 smoser0914x [CLOUDINIT] util.py[WARNING]: agent command '['service', 'walinuxagent', 'start']' failed.
Sep 14 14:53:19 smoser0914x [CLOUDINIT] util.py[DEBUG]: agent command '['service', 'walinuxagent', 'start']' failed.
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/cloudinit/sources/DataSourceAzure.py", line 145, in get_metadata_from_agent
    invoke_agent(agent_cmd)
  File "/usr/lib/python3/dist-packages/cloudinit/sources/DataSourceAzure.py", line 452, in invoke_agent
    util.subp(cmd, shell=(not isinstance(cmd, list)))
  File "/usr/lib/python3/dist-packages/cloudinit/util.py", line 1832, in subp
    cmd=args)
cloudinit.util.ProcessExecutionError: Unexpected error while running command.
Command: ['service', 'walinuxagent', 'start']
Exit code: 1
Reason: -
Stdout: ''
Stderr: "
  Failed to start walinuxagent.service: Transaction order is cyclic. See system logs for details.
  See system logs and 'systemctl status walinuxagent.service' for details

I believe the relevant change is in 34a26f7f
  https://git.launchpad.net/cloud-init/commit/?id=34a26f7f59f2963691e36ca0476bec9fc9ccef63
That added multi-user.target to the list of After for cloud-init-final.service.

** Affects: cloud-init
     Importance: Undecided
         Status: Confirmed

** Affects: cloud-init (Ubuntu)
     Importance: High
         Status: Confirmed

** Affects: cloud-init (Ubuntu Xenial)
     Importance: High
         Status: Confirmed

** Also affects: ubuntu (Ubuntu)
   Importance: Undecided
       Status: New

** Also affects: cloud-init (Ubuntu)
   Importance: Undecided
       Status: New

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

** Changed in: cloud-init (Ubuntu)
       Status: New => Confirmed

** No longer affects: ubuntu (Ubuntu)

** Also affects: cloud-init (Ubuntu Xenial)
   Importance: Undecided
       Status: New

** Changed in: cloud-init (Ubuntu Xenial)
       Status: New => Confirmed

** Changed in: cloud-init (Ubuntu Xenial)
   Importance: Undecided => High

** Changed in: cloud-init (Ubuntu)
   Importance: Undecided => High

** Description changed:

  When bringing up the Azure datasource in cloud-init.service, cloud-init
  tries 'service start walinuxagent'.
  
  That previously worked fine, and the agent would start and then would
  produce the certificate files that cloud-init needed (for ssh keys and
  things).
+ 
+ I found this when testing SRU for 0.7.7-31-g65ace7b-0ubuntu1~16.04.1
+ but it is likely present also in 0.7.7-31-g65ace7b-0ubuntu1 (yakkety)
  
  Now, however we see a log like:
  Sep 14 14:53:18 smoser0914x [CLOUDINIT] DataSourceAzure.py[DEBUG]: Getting metadata via agent.  hostname=smoser0914x cmd=['service', 'walinuxagent', 'start']
  Sep 14 14:53:18 smoser0914x [CLOUDINIT] util.py[DEBUG]: Running command hostname with allowed return codes [0] (shell=False, capture=True)
  Sep 14 14:53:18 smoser0914x [CLOUDINIT] DataSourceAzure.py[DEBUG]: invoking agent: ['service', 'walinuxagent', 'start']
  Sep 14 14:53:18 smoser0914x [CLOUDINIT] util.py[DEBUG]: Running command ['service', 'walinuxagent', 'start'] with allowed return codes [0] (shell=False, capture=True)
  Sep 14 14:53:18 smoser0914x [CLOUDINIT] util.py[WARNING]: agent command '['service', 'walinuxagent', 'start']' failed.
  Sep 14 14:53:19 smoser0914x [CLOUDINIT] util.py[DEBUG]: agent command '['service', 'walinuxagent', 'start']' failed.
  Traceback (most recent call last):
-   File "/usr/lib/python3/dist-packages/cloudinit/sources/DataSourceAzure.py", line 145, in get_metadata_from_agent
-     invoke_agent(agent_cmd)
-   File "/usr/lib/python3/dist-packages/cloudinit/sources/DataSourceAzure.py", line 452, in invoke_agent
-     util.subp(cmd, shell=(not isinstance(cmd, list)))
-   File "/usr/lib/python3/dist-packages/cloudinit/util.py", line 1832, in subp
-     cmd=args)
+   File "/usr/lib/python3/dist-packages/cloudinit/sources/DataSourceAzure.py", line 145, in get_metadata_from_agent
+     invoke_agent(agent_cmd)
+   File "/usr/lib/python3/dist-packages/cloudinit/sources/DataSourceAzure.py", line 452, in invoke_agent
+     util.subp(cmd, shell=(not isinstance(cmd, list)))
+   File "/usr/lib/python3/dist-packages/cloudinit/util.py", line 1832, in subp
+     cmd=args)
  cloudinit.util.ProcessExecutionError: Unexpected error while running command.
  Command: ['service', 'walinuxagent', 'start']
  Exit code: 1
  Reason: -
  Stdout: ''
  Stderr: "
-   Failed to start walinuxagent.service: Transaction order is cyclic. See system logs for details.
-   See system logs and 'systemctl status walinuxagent.service' for details
- 
+   Failed to start walinuxagent.service: Transaction order is cyclic. See system logs for details.
+   See system logs and 'systemctl status walinuxagent.service' for details
  
  I believe the relevant change is in 34a26f7f
-   https://git.launchpad.net/cloud-init/commit/?id=34a26f7f59f2963691e36ca0476bec9fc9ccef63
+   https://git.launchpad.net/cloud-init/commit/?id=34a26f7f59f2963691e36ca0476bec9fc9ccef63
  That added multi-user.target to the list of After for cloud-init-final.service.

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https://bugs.launchpad.net/bugs/1623570

Title:
  Azure: cannot start walinux agent (Transaction order is cyclic.)

Status in cloud-init:
  Confirmed
Status in cloud-init package in Ubuntu:
  Confirmed
Status in cloud-init source package in Xenial:
  Confirmed

Bug description:
  When bringing up the Azure datasource in cloud-init.service, cloud-
  init tries 'service start walinuxagent'.

  That previously worked fine, and the agent would start and then would
  produce the certificate files that cloud-init needed (for ssh keys and
  things).

  I found this when testing SRU for 0.7.7-31-g65ace7b-0ubuntu1~16.04.1
  but it is likely present also in 0.7.7-31-g65ace7b-0ubuntu1 (yakkety)

  Now, however we see a log like:
  Sep 14 14:53:18 smoser0914x [CLOUDINIT] DataSourceAzure.py[DEBUG]: Getting metadata via agent.  hostname=smoser0914x cmd=['service', 'walinuxagent', 'start']
  Sep 14 14:53:18 smoser0914x [CLOUDINIT] util.py[DEBUG]: Running command hostname with allowed return codes [0] (shell=False, capture=True)
  Sep 14 14:53:18 smoser0914x [CLOUDINIT] DataSourceAzure.py[DEBUG]: invoking agent: ['service', 'walinuxagent', 'start']
  Sep 14 14:53:18 smoser0914x [CLOUDINIT] util.py[DEBUG]: Running command ['service', 'walinuxagent', 'start'] with allowed return codes [0] (shell=False, capture=True)
  Sep 14 14:53:18 smoser0914x [CLOUDINIT] util.py[WARNING]: agent command '['service', 'walinuxagent', 'start']' failed.
  Sep 14 14:53:19 smoser0914x [CLOUDINIT] util.py[DEBUG]: agent command '['service', 'walinuxagent', 'start']' failed.
  Traceback (most recent call last):
    File "/usr/lib/python3/dist-packages/cloudinit/sources/DataSourceAzure.py", line 145, in get_metadata_from_agent
      invoke_agent(agent_cmd)
    File "/usr/lib/python3/dist-packages/cloudinit/sources/DataSourceAzure.py", line 452, in invoke_agent
      util.subp(cmd, shell=(not isinstance(cmd, list)))
    File "/usr/lib/python3/dist-packages/cloudinit/util.py", line 1832, in subp
      cmd=args)
  cloudinit.util.ProcessExecutionError: Unexpected error while running command.
  Command: ['service', 'walinuxagent', 'start']
  Exit code: 1
  Reason: -
  Stdout: ''
  Stderr: "
    Failed to start walinuxagent.service: Transaction order is cyclic. See system logs for details.
    See system logs and 'systemctl status walinuxagent.service' for details

  I believe the relevant change is in 34a26f7f
    https://git.launchpad.net/cloud-init/commit/?id=34a26f7f59f2963691e36ca0476bec9fc9ccef63
  That added multi-user.target to the list of After for cloud-init-final.service.

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