rsyslog 不将消息过滤到单独的日志文件中

Question

不知怎么的，我无法正常工作，我需要一些帮助。

我尝试将 syslog 中的日志（由 systemd 服务写入）过滤到单独的日志文件中。目前我正在使用 Debian。这是我的 rsyslog 配置，位于 /etc/rsyslog.d/19-test.conf 中，内容为

:msg,contains,"[frontend]"  -/var/log/frontend_app.log

systemd 单元文件的内容：

[Service]
    ExecStart=/opt/test/current/venv/bin/python -m api.tasks.frontend_app
    StandardOutput=syslog
    WorkingDirectory=/opt/test/frontend/current
    StandardError=syslog
    User=coco
    ProtectSystem=full
    SyslogIdentifier=[frontend]

现在，当我运行时，服务日志被插入 syslog 但没有插入 /var/log/frontend_app.log 但是当我尝试这样做时：

logger -p local1.info "[frontend] test message"

消息已成功插入 /var/log/frontend_app.log。

/etc/rsyslog.conf内容：

#  /etc/rsyslog.conf    Configuration file for rsyslog.
#
#           For more information see
#           /usr/share/doc/rsyslog-doc/html/rsyslog_conf.html


#################
#### MODULES ####
#################

module(load="imuxsock") # provides support for local system logging
module(load="imklog")   # provides kernel logging support
#module(load="immark")  # provides --MARK-- message capability

# provides UDP syslog reception
#module(load="imudp")
#input(type="imudp" port="514")

# provides TCP syslog reception
#module(load="imtcp")
#input(type="imtcp" port="514")


###########################
#### GLOBAL DIRECTIVES ####
###########################

#
# Use traditional timestamp format.
# To enable high precision timestamps, comment out the following line.
#
$ActionFileDefaultTemplate RSYSLOG_TraditionalFileFormat

#
# Set the default permissions for all log files.
#
$FileOwner root
$FileGroup adm
$FileCreateMode 0640
$DirCreateMode 0755
$Umask 0022

#
# Where to place spool and state files
#
$WorkDirectory /var/spool/rsyslog

#
# Include all config files in /etc/rsyslog.d/
#
$IncludeConfig /etc/rsyslog.d/*.conf


###############
#### RULES ####
###############

#
# First some standard log files.  Log by facility.
#
auth,authpriv.*         /var/log/auth.log
*.*;auth,authpriv.none      -/var/log/syslog
#cron.*             /var/log/cron.log
daemon.*            -/var/log/daemon.log
kern.*              -/var/log/kern.log
lpr.*               -/var/log/lpr.log
mail.*              -/var/log/mail.log
user.*              -/var/log/user.log

#
# Logging for the mail system.  Split it up so that
# it is easy to write scripts to parse these files.
#
mail.info           -/var/log/mail.info
mail.warn           -/var/log/mail.warn
mail.err            /var/log/mail.err

#
# Some "catch-all" log files.
#
*.=debug;\
    auth,authpriv.none;\
    news.none;mail.none -/var/log/debug
*.=info;*.=notice;*.=warn;\
    auth,authpriv.none;\
    cron,daemon.none;\
    mail,news.none      -/var/log/messages

#
# Emergencies are sent to everybody logged in.
#
*.emerg             :omusrmsg:*

我似乎无法找到它为什么会这样以及解决方案是什么。

谢谢！

Answer 1

好的，我设法通过使用 :rawmsg 而不是 :msg 来修复它，所以，

:rawmsg,contains,"[frontend]"  -/var/log/frontend_app.log

:msg msg 似乎不包含 SyslogIdentifier，只包含日志消息，而 :rawmsg 确实包含带有时间戳（如果启用）和 SyslogIdentifier 的完整消息。

这里有更多信息 http://www.rsyslog.com/doc/master/configuration/properties.html#message-properties。

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