Estou usando rsyslogpara coletar logs de vários servidores, todos enviados para um único servidor. Percebi que às vezes os logs aparecem com atraso de 2 a 5 minutos no /var/log/messagesservidor de destino.
Ao usar tcpdumpnos servidores de origem e de destino, vi que as mensagens estão sendo enviadas do servidor de origem e recebidas no servidor de destino quase imediatamente. Porém, as mensagens aparecem com atraso no /var/log/messagesservidor de destino, e não no mesmo momento em que foram recebidas no servidor conforme tcpdump.
Qual poderia ser o problema? Por favor, avise.
Aqui está meu arquivo rsyslog.conf:
# 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 ####
# The imjournal module bellow is now used as a message source instead of imuxsock.
$ModLoad imuxsock # provides support for local system logging (e.g. via logger command)
$ModLoad imjournal # provides access to the systemd journal
#$ModLoad imklog # reads kernel messages (the same are read from journald)
#$ModLoad immark # provides --MARK-- message capability
# Provides UDP syslog reception
$ModLoad imudp
$UDPServerRun 514
# Provides TCP syslog reception
$ModLoad imtcp
$InputTCPServerRun 514
#### GLOBAL DIRECTIVES ####
# Where to place auxiliary files
$WorkDirectory /var/lib/rsyslog
# 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
# Turn off message reception via local log socket;
# local messages are retrieved through imjournal now.
$OmitLocalLogging on
# File to store the position in the journal
$IMJournalStateFile imjournal.state
$DefaultNetstreamDriver gtls
$DefaultNetstreamDriverCAFile /etc/rsyslog.d/ca.pem
$DefaultNetstreamDriverCertFile /etc/rsyslog.d/cert.pem
$DefaultNetstreamDriverKeyFile /etc/rsyslog.d/key.pem
$ActionSendStreamDriverAuthMode x509/name
$ActionSendStreamDriverPermittedPeer *.aaa.com
#$ActionSendStreamDriverPermittedPeer *.ntwx-unet.ocn.ne.jp
$ActionSendStreamDriverMode 1 # run driver in TLS-only mode
$ActionSendTCPRebindInterval 1 # run driver in TLS-only mode
$ActionSendResendLastMsgOnReconnect on
#### RULES ####
# 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 :omusrmsg:*
# 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
# 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.
$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
#
$template test,"%HOSTNAME%_Forwading_%timereported%,%msg%\n"
local0.* /opt/aaa/logs/syslog.log
local2.* /opt/aaa/logs/userAuditSyslog.log