Public bug reported:
If you are running containers with LXC and one or more has nullmailer
running, then you can't start a nullmailer service on the host. This
happens because the service script looks for an existing process by
name. The child nullmailer process(es) is visible on the host under the
same name.
You could argue that the fault lies with inadequate isolation by LXC.
Also the problem may disappear when (if) the service is updated to use
systemd instead of a legacy rc script.
As a work around make sure that the host nullmailer service is started
before that in any child container. (Child containers do not see host
processes or those of other containers.)
Problem detected on Ubuntu 14.04.2 LTS
** Affects: nullmailer (Ubuntu)
Importance: Undecided
Status: New
** Tags: lxc nullmailer
** Package changed: compiz (Ubuntu) => nullmailer (Ubuntu)
** Description changed:
If you are running containers with LXC and one or more has nullmailer
running, then you can't start a nullmailer service on the host. This
happens because the service script looks for an existing process by
name. The child nullmailer process(es) is visible on the host under the
same name.
You could argue that the fault lies with inadequate isolation by LXC.
Also the problem may disappear when (if) the service is updated to use
systemd instead of a legacy rc script.
As a work around make sure that the host nullmailer service is started
before that in any child container. (Child containers do not see host
processes or those of other containers.)
+
+ Problem detected on Ubuntu 14.04.2 LTS
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https://bugs.launchpad.net/bugs/1496100
Title:
nullmailer service doesn't start if already running in a child
container under LXC
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