This is incorrect - Upstart does reopen log files when a job produces
output *after* the log file has been deleted.
So in normal operation, logrotate will run and say rotate foo.log to
foo.log.1.gz. At this point, the file associated with the fd for foo.log
will indeed show as deleted. But, if and only if that job produces any
further output Upstart will recreate foo.log. If the job produces no
further output the log will not be recreated. Once the job has stopped,
the fd associated with the deleted file will be closed.
If this is not what you are seeing please provide further details.
** Changed in: upstart (Ubuntu)
Status: New => Invalid
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https://bugs.launchpad.net/bugs/1350782
Title:
Upstart does not reopen /var/log/upstart/* logfiles upon log rotation
Status in “upstart” package in Ubuntu:
Invalid
Bug description:
Note: this issue is reported from a 12.04 system, but I've confirmed
the same behavior on a 14.04 system.
Logrotate configuration for Upstart logs has no postrotate action:
/var/log/upstart/*.log {
daily
missingok
rotate 7
compress
notifempty
nocreate
}
As a result, when logs are rotated, upstart keeps open handles on
deleted log files instead of reopening the new log files:
# lsof -p1 | fgrep /var/log/upstart
. . .
init 1 root 8w REG 253,1 62 789436
/var/log/upstart/dbus.log.1 (deleted)
. . .
From this point on, all subsequent log messages are lost, delivered
into a deleted file.
I could not find a way to get the upstart init process to reopen its
log files, short of restarting _all_ services that log to
/var/log/upstart/*.log files, which does not seem like a good solution
at all.
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: upstart 1.5-0ubuntu7.2
ProcVersionSignature: Ubuntu 3.2.0-60.91-generic 3.2.55
Uname: Linux 3.2.0-60-generic x86_64
ApportVersion: 2.0.1-0ubuntu17.6
Architecture: amd64
Date: Thu Jul 31 10:43:25 2014
InstallationMedia: Ubuntu-Server 10.04.4 LTS "Lucid Lynx" - Release amd64
(20120214.2)
MarkForUpload: True
ProcEnviron:
LC_CTYPE=en_US.UTF-8
TERM=xterm-256color
PATH=(custom, no user)
LANG=en_GB.UTF-8
SHELL=/bin/bash
SourcePackage: upstart
UpgradeStatus: Upgraded to precise on 2013-10-23 (280 days ago)
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