[Bug 1707901] Re: systemd-journald-audit.socket attempts to start in unpriviledged LXD container, but cannot

[Dimitri John Ledkov]

Ack thanks.

I think upstream actually has ConditionVirtualization=!private-users now
which can come in handy to do the uid_map check. ( I have just
discovered this myself).

W.r.t. not needed in containers at all, also makes sense. Thanks.

** Changed in: lxd (Ubuntu)
       Status: New => Invalid

** Changed in: systemd (Ubuntu)
       Status: New => In Progress

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Title:
  systemd-journald-audit.socket attempts to start in unpriviledged LXD
  container, but cannot

Status in lxd package in Ubuntu:
  Invalid
Status in systemd package in Ubuntu:
  In Progress

Bug description:
  systemd-journald-audit.socket attempts to start in unpriviledged LXD
  container, but cannot.

  It fails with resource. There are no interesting logs inside the
  container, or on the host.

  The socket unit is as below, and both conditions dopass for the
  unpriviledged container.

  [Unit]
  Description=Journal Audit Socket
  Documentation=man:systemd-journald.service(8) man:journald.conf(5)
  DefaultDependencies=no
  Before=sockets.target
  ConditionSecurity=audit
  ConditionCapability=CAP_AUDIT_READ

  [Socket]
  Service=systemd-journald.service
  ReceiveBuffer=128M
  ListenNetlink=audit 1
  PassCredentials=yes

  Are there any capabilities that are set/not-set for the priviledged
  /non-priviledged container in LXD? As in, are there any ways to
  distinguish between priviledge / unpriviledged container for which
  CAP_AUDIT_READ will in fact work or not?

  Currently ubuntu boots degraded inside unpriviledged lxd container,
  and that does not look nice. Or attempting to use a capability is the
  only way to know for sure?

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