转自：https://www.cnblogs.com/cherishry/p/6775163.html

rsyslog 配置二

# rsyslog configuration file

# For more information see /usr/share/doc/rsyslog-*/rsyslog_conf.html

# If you experience problems, see http://www.rsyslog.com/doc/troubleshoot.html

#### MODULES ####

####模块####

# The imjournal module bellow is now used as a message source instead of imuxsock

#加载输入模块（消息来源）

$ModLoad imuxsock 　　　　　　　　# provides support for local system logging (e.g. via logger command)（提供对本地系统日志的支持（例如通过记录器命令））

$ModLoad imjournal 　　　　　　　　# provides access to the systemd journal（提供对systemd日志的访问）

#$ModLoad imklog 　　　　　　　　# reads kernel messages (the same are read from journald)（读取内核消息（从日志读取相同的消息））

#$ModLoad immark 　　　　　　　　# provides --MARK-- message capability（提供--MARK--消息功能）

# Provides UDP syslog reception

#接收使用UDP 协议转发过来的日志

$ModLoad imudp

$UDPServerRun 514

# Provides TCP syslog reception

#接收使用TCP 协议转发过来的日志

#$ModLoad imtcp

#$InputTCPServerRun 514

#注意：两个协议可以同时监听

#### GLOBAL DIRECTIVES ####

#定义日志格式默认模板

# Where to place auxiliary files

$WorkDirectory /var/lib/rsyslog

# Use default timestamp format

$ActionFileDefaultTemplate RSYSLOG_TraditionalFileFormat

$template myFormat,"%timestamp% %fromhost-ip% %msg%\n" #定义模板 $template tplname, string/list/subtree/plugin

$ActionFileDefaultTemplate myFormat #默认使用myFormat模板

# File syncing capability is disabled by default. This feature is usually not required, #默认情况下禁用文件同步功能。通常不需要此功能

# not useful and an extreme performance hit

#$ActionFileEnableSync on

# Include all config files in /etc/rsyslog.d/ #将所有配置文件包含在/etc/rsyslog.d/

$IncludeConfig /etc/rsyslog.d/*.conf

# Turn off message reception via local log socket; #通过本地日志socket，关闭信息接收

# local messages are retrieved through imjournal now.

$OmitLocalLogging on

# File to store the position in the journal #文件存储在日志中的位置

$IMJournalStateFile imjournal.state

#### RULES ####

#定义规则

# Log all kernel messages to the console.

# Logging much else clutters up the screen.

#kern.* /dev/console #关于内核的所有日志都放到/dev/console（控制台）

# Log anything (except mail) of level info or higher.

# Don't log private authentication messages!

*.info;mail.none;authpriv.none;cron.none /var/log/messages

#记录所有日志类型的info级别以及大于info级别的信息到/var/log/messages，

#但是mail邮件信息，authpriv验证方面的信息和cron时间任务相关的信息除外

# The authpriv file has restricted access. #authpriv验证相关的所有信息存放在/var/log/secure

authpriv.* /var/log/secure

# Log all the mail messages in one place. #邮件的所有信息存放在/var/log/maillog; 这里有一个-符号, 表示是使用异步的方式记录, 因为日志一般会比较大

mail.* -/var/log/maillog

# Log cron stuff #计划任务有关的信息存放在/var/log/cron

cron.* /var/log/cron

# Everybody gets emergency messages #记录所有的大于等于emerg级别信息, 以wall方式发送给每个登录到系统的人

*.emerg :omusrmsg:*

# Save news errors of level crit and higher in a special file. #记录uucp,news.crit等存放在/var/log/spooler

uucp,news.crit /var/log/spooler

# Save boot messages also to boot.log #启动的相关信息存放在 /var/log/boot.log

local7.* /var/log/boot.log

# ### begin forwarding rule ###

#转发规则

# The statement between the begin ... end define a SINGLE forwarding #begin ... end之间的语句定义了一个SINGLE转发

# rule. They belong together, do NOT split them. If you create multiple #规则。他们属于一起，不要分裂。如果你创建多个

# forwarding rules, duplicate the whole block! #转发规则，重复整个块

# Remote Logging (we use TCP for reliable delivery) #远程日志记录（我们使用TCP可靠的传送）

# An on-disk queue is created for this action. If the remote host is #为此操作创建一个磁盘队列。如果远程主机是down掉，消息被假脱机到磁盘，并在重新启动时发送。

# down, messages are spooled to disk and sent when it is up again.

#$ActionQueueFileName fwdRule1 # unique name prefix for spool files #假脱机文件的唯一名称前缀

#$ActionQueueMaxDiskSpace 1g # 1gb space limit (use as much as possible) #1gb空间限制（尽可能多使用）

#$ActionQueueSaveOnShutdown on # save messages to disk on shutdown #关闭时将消息保存到磁盘

#$ActionQueueType LinkedList # run asynchronously #使用链接列表模式

#$ActionResumeRetryCount -1 # infinite retries if host is down #如果主机关闭，则会无限重试

# remote host is: name/ip:port, e.g. 192.168.0.1:514, port optional

#*.* @@remote-host:514

*.* @@localhost:5000 #@@表示通过tcp协议发送 @表示通过udp进行转发

# ### end of the forwarding rule ###