만나서 반가워요.
갑자기 /var/log/messages, cron, secure 등에 아무것도 출력되지 않습니다. rsyslog를 다시 시작하지 않았거나 /etc/rsyslog.conf를 수정하지 않았으므로 이유를 모르겠습니다. 재부팅 후에도 여전히 출력이 출력되지 않습니다. 정상적으로 출력되는 서버도 있습니다.
/proc/*/fd를 보면 올바르게 출력되는 것은 다음과 같습니다.
l-wx------ 1 root root 64 Apr 16 2021 8 -> /var/log/secure
l-wx------ 1 root root 64 Apr 16 2021 7 -> /var/log/maillog
l-wx------ 1 root root 64 Apr 16 2021 6 -> /var/log/cron
lrwx------ 1 root root 64 Apr 16 2021 5 -> socket:[8296]
lrwx------ 1 root root 64 Apr 16 2021 4 -> socket:[8295]
lr-x------ 1 root root 64 Apr 16 2021 3 -> /proc/kmsg
l-wx------ 1 root root 64 Apr 16 2021 2 -> /var/log/messages
lrwx------ 1 root root 64 Apr 16 2021 1 -> [eventpoll]
lrwx------ 1 root root 64 Apr 16 2021 0 -> socket:[8297]
출력되지 않는 것은
lr-x------ 1 root root 64 May 2 05:24 3 -> /proc/kmsg
lrwx------ 1 root root 64 May 2 05:24 1 -> socket:[122587394]
lrwx------ 1 root root 64 May 2 05:24 0 -> socket:[122587391]
rsyslog.conf는 두 서버 모두에서 동일합니다.
# rsyslog v5 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 ####
$ModLoad imuxsock # provides support for local system logging (e.g. via logger command)
$ModLoad imklog # provides kernel logging support (previously done by rklogd)
#$ModLoad immark # provides --MARK-- message capability
# Provides UDP syslog reception
#$ModLoad imudp
#$UDPServerRun 514
# Provides TCP syslog reception
#$ModLoad imtcp
#$InputTCPServerRun 514
#### GLOBAL DIRECTIVES ####
# Use default timestamp format
$ActionFileDefaultTemplate RSYSLOG_TraditionalFileFormat
# File syncing capability is disabled by default. This feature is usually not required,
# not useful and an extreme performance hit
#$ActionFileEnableSync on
# Include all config files in /etc/rsyslog.d/
$IncludeConfig /etc/rsyslog.d/*.conf
#### RULES ####
# Log all kernel messages to the console.
# Logging much else clutters up the screen.
#kern.* /dev/console
# Log anything (except mail) of level info or higher.
# Don't log private authentication messages!
*.info;mail.none;authpriv.none;cron.none /var/log/messages
# The authpriv file has restricted access.
authpriv.* /var/log/secure
# Log all the mail messages in one place.
mail.* -/var/log/maillog
# Log cron stuff
cron.* /var/log/cron
# Everybody gets emergency messages
*.emerg *
# Save news errors of level crit and higher in a special file.
uucp,news.crit /var/log/spooler
# Save boot messages also to boot.log
local7.* /var/log/boot.log
# ### begin forwarding rule ###
# The statement between the begin ... end define a SINGLE forwarding
# rule. They belong together, do NOT split them. If you create multiple
# forwarding rules, duplicate the whole block!
# Remote Logging (we use TCP for reliable delivery)
#
# An on-disk queue is created for this action. If the remote host is
# down, messages are spooled to disk and sent when it is up again.
#$WorkDirectory /var/lib/rsyslog # where to place spool files
#$ActionQueueFileName fwdRule1 # unique name prefix for spool files
#$ActionQueueMaxDiskSpace 1g # 1gb space limit (use as much as possible)
#$ActionQueueSaveOnShutdown on # save messages to disk on shutdown
#$ActionQueueType LinkedList # run asynchronously
#$ActionResumeRetryCount -1 # infinite retries if host is down
# remote host is: name/ip:port, e.g. 192.168.0.1:514, port optional
#*.* @@remote-host:514
출력이 갑자기 중단된 이유는 확실하지 않습니다.
OS: CentOS6 rsyslog: 5.8.10