[Bug 2061017] Re: lxd-installer: permission error not handled and lxd snap not installed

[Simon Déziel]

** Description changed:

+ [ Impact ]
+ 
+ * If the LXD is not pre-created and/or the primary user isn't member of
+ it, lxd-installer will fail to install LXD with a cryptic permission
+ denied error.
+ 
+ [ Test Plan ]
+ 
+ Create a test instance:
+ 
+ $ lxc launch ubuntu-minimal-daily:24.04 u1
+ 
+ Make sure LXD snap is not installed:
+ 
+ $ ! lxc exec u1 -- snap list lxd || false
+ error: no matching snaps installed
+ 
+ Remove the LXD group:
+ 
+ $ lxc exec u1 -- delgroup lxd
+ warn: The group `lxd' does not exist.
+ 
+ Check lxd-installer version (update to -proposed package if needed):
+ 
+ $ lxc exec u1 -- dpkg -l | grep lxd-installer
+ ii  lxd-installer                 4                                 all          Wrapper to install lxd snap on demand
+ 
+ Trigger lxd-installer as the regular user not a member of the lxd group:
+ 
+ $ lxc exec --user 1000 --group 1000 --env HOME=/home/ubuntu u1 -- lxc list
+ Installing LXD snap, please be patient.
+ Traceback (most recent call last):
+   File "<string>", line 1, in <module>
+ PermissionError: [Errno 13] Permission denied
+ /usr/sbin/lxc: 12: exec: /snap/bin/lxc: not found
+ Error: Command not found
+ 
+ [ Where problems could occur ]
+ 
+ TODO
+ 
+ [Original description]
+ 
  On a fresh install of 24.04 server on Raspberry Pi, I ran 'lxc list'
  without having the lxd snap installed already. There was an attempt to
  install the snap, but it failed, and the snap needed to be manually
  installed:
  
  nr at pi5:~$ lxc list
  Installing LXD snap, please be patient.
  Traceback (most recent call last):
-   File "<string>", line 1, in <module>
+   File "<string>", line 1, in <module>
  PermissionError: [Errno 13] Permission denied
  /usr/sbin/lxc: 12: exec: /snap/bin/lxc: not found
  
  More details:
  
- nr at pi5:~$ cat /etc/os-release 
+ nr at pi5:~$ cat /etc/os-release
  PRETTY_NAME="Ubuntu Noble Numbat (development branch)"
  NAME="Ubuntu"
  VERSION_ID="24.04"
  VERSION="24.04 LTS (Noble Numbat)"
  VERSION_CODENAME=noble
  ID=ubuntu
  ID_LIKE=debian
  HOME_URL="https://www.ubuntu.com/"
  SUPPORT_URL="https://help.ubuntu.com/"
  BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
  PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
  UBUNTU_CODENAME=noble
  LOGO=ubuntu-logo
  nr at pi5:~$ apt policy lxd-installer
  lxd-installer:
-   Installed: 4
-   Candidate: 4
-   Version table:
-  *** 4 500
-         500 http://ports.ubuntu.com/ubuntu-ports noble/main arm64 Packages
-         100 /var/lib/dpkg/status
+   Installed: 4
+   Candidate: 4
+   Version table:
+  *** 4 500
+         500 http://ports.ubuntu.com/ubuntu-ports noble/main arm64 Packages
+         100 /var/lib/dpkg/status

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to lxd-installer in Ubuntu.
https://bugs.launchpad.net/bugs/2061017

Title:
  lxd-installer: permission error not handled and lxd snap not installed

Status in lxd-installer package in Ubuntu:
  Fix Released

Bug description:
  [ Impact ]

  * If the LXD is not pre-created and/or the primary user isn't member
  of it, lxd-installer will fail to install LXD with a cryptic
  permission denied error.

  [ Test Plan ]

  Create a test instance:

  $ lxc launch ubuntu-minimal-daily:24.04 u1

  Make sure LXD snap is not installed:

  $ ! lxc exec u1 -- snap list lxd || false
  error: no matching snaps installed

  Remove the LXD group:

  $ lxc exec u1 -- delgroup lxd
  warn: The group `lxd' does not exist.

  Check lxd-installer version (update to -proposed package if needed):

  $ lxc exec u1 -- dpkg -l | grep lxd-installer
  ii  lxd-installer                 4                                 all          Wrapper to install lxd snap on demand

  Trigger lxd-installer as the regular user not a member of the lxd
  group:

  $ lxc exec --user 1000 --group 1000 --env HOME=/home/ubuntu u1 -- lxc list
  Installing LXD snap, please be patient.
  Traceback (most recent call last):
    File "<string>", line 1, in <module>
  PermissionError: [Errno 13] Permission denied
  /usr/sbin/lxc: 12: exec: /snap/bin/lxc: not found
  Error: Command not found

  [ Where problems could occur ]

  TODO

  [Original description]

  On a fresh install of 24.04 server on Raspberry Pi, I ran 'lxc list'
  without having the lxd snap installed already. There was an attempt to
  install the snap, but it failed, and the snap needed to be manually
  installed:

  nr at pi5:~$ lxc list
  Installing LXD snap, please be patient.
  Traceback (most recent call last):
    File "<string>", line 1, in <module>
  PermissionError: [Errno 13] Permission denied
  /usr/sbin/lxc: 12: exec: /snap/bin/lxc: not found

  More details:

  nr at pi5:~$ cat /etc/os-release
  PRETTY_NAME="Ubuntu Noble Numbat (development branch)"
  NAME="Ubuntu"
  VERSION_ID="24.04"
  VERSION="24.04 LTS (Noble Numbat)"
  VERSION_CODENAME=noble
  ID=ubuntu
  ID_LIKE=debian
  HOME_URL="https://www.ubuntu.com/"
  SUPPORT_URL="https://help.ubuntu.com/"
  BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
  PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
  UBUNTU_CODENAME=noble
  LOGO=ubuntu-logo
  nr at pi5:~$ apt policy lxd-installer
  lxd-installer:
    Installed: 4
    Candidate: 4
    Version table:
   *** 4 500
          500 http://ports.ubuntu.com/ubuntu-ports noble/main arm64 Packages
          100 /var/lib/dpkg/status

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