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[Richard Spindler <1977780@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

I've managed to reproduce using multipass and KVM on a local machine.

To reproduce this you just need to have echo command in runcmd section
of a cloud-init config file that have white space before any
alphanumeric characters.

For example the following runcmd stanza successfully updates /etc/motd:

runcmd:
  - echo '############' > /etc/motd
  - echo 'Test Message' >> /etc/motd

The follow runcmd stanza fails to execute the commands:

runcmd:
  - echo '  ############' > /etc/motd
  - echo '  Test Message' >> /etc/motd

These fail to run whether there is a single quotation mark or double
quotation mark. It also appears to fail if it's a tab rather than a
space, e.g. \t

Not sure what logs to provide here, the cloud-init logs inside the VM
are probably the most pertinent I would suspect as in both cases the VM
build completes, it's just the commands are not run in one case, but I
suspect the following lines in the cloud-init-output.log file in
/var/log may be relevant:

/var/lib/cloud/instance/scripts/runcmd: 12: Syntax error: Unterminated quoted string
2022-06-06 06:09:45,045 - cc_scripts_user.py[WARNING]: Failed to run module scripts-user (scripts in /var/lib/cloud/instance/scripts)
2022-06-06 06:09:45,045 - util.py[WARNING]: Running module scripts-user (<module 'cloudinit.config.cc_scripts_user' from '/usr/lib/python3/dist-packages/cloudinit/config/cc_scripts_user.py'>) failed

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

** Attachment added: "cloud-init.tar.gz"
   https://bugs.launchpad.net/bugs/1977780/+attachment/5595138/+files/cloud-init.tar.gz

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https://bugs.launchpad.net/bugs/1977780

Title:
  cloud-init appears to fail to run echo commands in runcmd that have
  whitespace before alphanumeric characters

Status in cloud-init:
  New

Bug description:
  I've managed to reproduce using multipass and KVM on a local machine.

  To reproduce this you just need to have echo command in runcmd section
  of a cloud-init config file that have white space before any
  alphanumeric characters.

  For example the following runcmd stanza successfully updates
  /etc/motd:

  runcmd:
    - echo '############' > /etc/motd
    - echo 'Test Message' >> /etc/motd

  The follow runcmd stanza fails to execute the commands:

  runcmd:
    - echo '  ############' > /etc/motd
    - echo '  Test Message' >> /etc/motd

  These fail to run whether there is a single quotation mark or double
  quotation mark. It also appears to fail if it's a tab rather than a
  space, e.g. \t

  Not sure what logs to provide here, the cloud-init logs inside the VM
  are probably the most pertinent I would suspect as in both cases the
  VM build completes, it's just the commands are not run in one case,
  but I suspect the following lines in the cloud-init-output.log file in
  /var/log may be relevant:

  /var/lib/cloud/instance/scripts/runcmd: 12: Syntax error: Unterminated quoted string
  2022-06-06 06:09:45,045 - cc_scripts_user.py[WARNING]: Failed to run module scripts-user (scripts in /var/lib/cloud/instance/scripts)
  2022-06-06 06:09:45,045 - util.py[WARNING]: Running module scripts-user (<module 'cloudinit.config.cc_scripts_user' from '/usr/lib/python3/dist-packages/cloudinit/config/cc_scripts_user.py'>) failed

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