03-12-2008
Log4j overwriting logs! ..sometimes...
Hey,
hoping someone here can help me. I'm using log4j for logging in a Java server. Its using DailyRollingFileAppender and rolls every hour. The reason I'm posting here is that in windows it works fine, but in unix it doesnt. What happens is the logs are logged in a file, lets say 'requests'. Then every hour the requests are rolled. so after the first hour of the day we would have the file 'requests-08-03-12-01.log'. Then requests for the current hour will be logged in requests again. Problem is that if we stop the server then restart what happens is that the requests that were currently logged in 'request' get written to the previous log file, overwriting any existing info. This doesnt happen in windows. Also I read about changing directories and it seems to work if we log to a different directory, i.e. it doesnt overwrite anything on restart. So any ideas as to why when we use this directory we have this issue?
Thanks.
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LEARN ABOUT FREEBSD
sftp-server
SFTP-SERVER(8) BSD System Manager's Manual SFTP-SERVER(8)
NAME
sftp-server -- SFTP server subsystem
SYNOPSIS
sftp-server [-ehR] [-d start_directory] [-f log_facility] [-l log_level] [-P blacklisted_requests] [-p whitelisted_requests] [-u umask]
sftp-server -Q protocol_feature
DESCRIPTION
sftp-server is a program that speaks the server side of SFTP protocol to stdout and expects client requests from stdin. sftp-server is not
intended to be called directly, but from sshd(8) using the Subsystem option.
Command-line flags to sftp-server should be specified in the Subsystem declaration. See sshd_config(5) for more information.
Valid options are:
-d start_directory
specifies an alternate starting directory for users. The pathname may contain the following tokens that are expanded at runtime: %%
is replaced by a literal '%', %h is replaced by the home directory of the user being authenticated, and %u is replaced by the user-
name of that user. The default is to use the user's home directory. This option is useful in conjunction with the sshd_config(5)
ChrootDirectory option.
-e Causes sftp-server to print logging information to stderr instead of syslog for debugging.
-f log_facility
Specifies the facility code that is used when logging messages from sftp-server. The possible values are: DAEMON, USER, AUTH,
LOCAL0, LOCAL1, LOCAL2, LOCAL3, LOCAL4, LOCAL5, LOCAL6, LOCAL7. The default is AUTH.
-h Displays sftp-server usage information.
-l log_level
Specifies which messages will be logged by sftp-server. The possible values are: QUIET, FATAL, ERROR, INFO, VERBOSE, DEBUG, DEBUG1,
DEBUG2, and DEBUG3. INFO and VERBOSE log transactions that sftp-server performs on behalf of the client. DEBUG and DEBUG1 are
equivalent. DEBUG2 and DEBUG3 each specify higher levels of debugging output. The default is ERROR.
-P blacklisted_requests
Specify a comma-separated list of SFTP protocol requests that are banned by the server. sftp-server will reply to any blacklisted
request with a failure. The -Q flag can be used to determine the supported request types. If both a blacklist and a whitelist are
specified, then the blacklist is applied before the whitelist.
-p whitelisted_requests
Specify a comma-separated list of SFTP protocol requests that are permitted by the server. All request types that are not on the
whitelist will be logged and replied to with a failure message.
Care must be taken when using this feature to ensure that requests made implicitly by SFTP clients are permitted.
-Q protocol_feature
Query protocol features supported by sftp-server. At present the only feature that may be queried is ``requests'', which may be used
for black or whitelisting (flags -P and -p respectively).
-R Places this instance of sftp-server into a read-only mode. Attempts to open files for writing, as well as other operations that
change the state of the filesystem, will be denied.
-u umask
Sets an explicit umask(2) to be applied to newly-created files and directories, instead of the user's default mask.
For logging to work, sftp-server must be able to access /dev/log. Use of sftp-server in a chroot configuration therefore requires that
syslogd(8) establish a logging socket inside the chroot directory.
SEE ALSO
sftp(1), ssh(1), sshd_config(5), sshd(8)
T. Ylonen and S. Lehtinen, SSH File Transfer Protocol, draft-ietf-secsh-filexfer-02.txt, October 2001, work in progress material.
HISTORY
sftp-server first appeared in OpenBSD 2.8.
AUTHORS
Markus Friedl <markus@openbsd.org>
BSD
October 14, 2013 BSD