Upstart 1.4 "Let them speak" released

Upstart 1.4 "Let them speak" released

[James Hunt]

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Summary of changes:

* Improved console setting.
* New "log" argument to console stanza allowing a system jobs
  stdout/stderr to be captured to a file. New options added to
  support this feature: '--default-console', '--logdir',
  '--no-log'. This feature only currently applies to system jobs:
  user jobs which specify "console log" will be treated as if they
  had specified "console none".
* New "setuid" and "setgid" stanzas to allow system jobs to be run
  under the specified uid/gid corresponding to the given name/group.
* Improvements to upstart-udev-bridge to handle problematic hardware
  (such as some batteries) which pass non-printable bytes to userspace.

Download it from launchpad: https://launchpad.net/upstart

Kind regards,

James.
- --
James Hunt
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Re: Upstart 1.4 "Let them speak" released

[Lennart Poettering]

On Tue, 13.12.11 11:36, James Hunt (james.hunt@canonical.com) wrote:

Heya,

> * New "log" argument to console stanza allowing a system jobs
>   stdout/stderr to be captured to a file. New options added to
>   support this feature: '--default-console', '--logdir',
>   '--no-log'. This feature only currently applies to system jobs:
>   user jobs which specify "console log" will be treated as if they
>   had specified "console none".

Just out of curiosity: how is rotation handled for this? If you pass the
file fd directly to the spawned service you can't really rotate the file
ever, since you cannot ask the service to reopen the file. So what do
you do?

Lennart

-- 
Lennart Poettering - Red Hat, Inc.

Re: Upstart 1.4 "Let them speak" released

[James Hunt]

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Hi Lennart,

On 13/12/11 11:38, Lennart Poettering wrote:
> On Tue, 13.12.11 11:36, James Hunt (james.hunt@canonical.com) wrote: Just out of curiosity: how
> is rotation handled for this? If you pass the file fd directly to the spawned service you can't
> really rotate the file ever, since you cannot ask the service to reopen the file. So what do 
> you do?
The trick is we don't pass the logfile fd to the job (the jobs stdout+stderr are connected to one
end of a pty). Regarding rotation, Upstart detects if the logfile that it manages was deleted. If
so, it simply closes and reopens the corresponding file. This allows tools like logrotate to
handle rotation.

Kind regards,

James.
- --
James Hunt
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