Estou trabalhando em um projeto da escola para obter logs de uma impressora enviada para o splunk. Este é um projeto feito por alguns lotes de estudantes. Inicialmente, usei a cópia original do arquivo rsyslog.conf feita pelo aluno de lote anterior, mas não consegui recuperar dados no Splunk. Eu já tinha configurado a impressora para enviar logs para o endereço IP e porta do servidor linux que estou usando. A configuração no Splunk também foi feita para escutar a porta 2048. Meu supervisor me disse que a cópia feita pelo aluno anterior deveria funcionar.
Cópia original:
# 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
$UDPServerRun 2048
# Provides TCP syslog reception
#$ModLoad imtcp
#$InputTCPServerRun 514
$template RemoteLogs,"/var/log/syslog/%HOSTNAME%/%FROMHOST-IP%.log"
*.* ?RemoteLogs
#### 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
$IMJournalStateFile imjournal.state
#### RULES ####
# Log all kernel messages to the console.
# Logging much else clutters up the screen.
#kern.* /dev/console
# Log anything (except mail) of level info or higher.
# Don't log private authentication messages!
*.info;mail.none;authpriv.none;cron.none /var/log/messages
# The authpriv file has restricted access.
authpriv.* /var/log/secure
# Log all the mail messages in one place.
mail.* -/var/log/maillog
# Log cron stuff
cron.* /var/log/cron
# Everybody gets emergency messages
*.emerg :omusrmsg:*
# Save news errors of level crit and higher in a special file.
uucp,news.crit /var/log/spooler
# Save boot messages also to boot.log
local7.* /var/log/boot.log
# ### begin forwarding rule ###
# The statement between the begin ... end define a SINGLE forwarding
# rule. They belong together, do NOT split them. If you create multiple
# forwarding rules, duplicate the whole block!
# Remote Logging (we use TCP for reliable delivery)
#
# An on-disk queue is created for this action. If the remote host is
# down, messages are spooled to disk and sent when it is up again.
#$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
# ### end of the forwarding rule ###
Como não consegui fazer com que a impressora enviasse os logs para o Splunk com a configuração acima, fui pesquisar on-line e fiz algumas modificações que consegui fazer com que a impressora enviasse logs para o Splunk.
Cópia modificada:
# 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
$UDPServerRun 2048
*$InputUDPServer BindRuleset remote
$UDPServerRun 2048*
# Provides TCP syslog reception
#$ModLoad imtcp
#$InputTCPServerRun 514
$template RemoteLogs,"/var/log/syslog/%HOSTNAME%/%FROMHOST-IP%.log"
*.* ?RemoteLogs
#### 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
$IMJournalStateFile imjournal.state
**.* action(type="omfwd" target="172.20.129.156" port="2048" protocol="udp"
action.resumeRetryCount="100"
queue.type="linkedList" queue.size="10000")*
#### RULES ####
# Log all kernel messages to the console.
# Logging much else clutters up the screen.
#kern.* /dev/console
# Log anything (except mail) of level info or higher.
# Don't log private authentication messages!
*.info;mail.none;authpriv.none;cron.none /var/log/messages
# The authpriv file has restricted access.
authpriv.* /var/log/secure
# Log all the mail messages in one place.
mail.* -/var/log/maillog
# Log cron stuff
cron.* /var/log/cron
# Everybody gets emergency messages
*.emerg :omusrmsg:*
# Save news errors of level crit and higher in a special file.
uucp,news.crit /var/log/spooler
# Save boot messages also to boot.log
local7.* /var/log/boot.log
# ### begin forwarding rule ###
# The statement between the begin ... end define a SINGLE forwarding
# rule. They belong together, do NOT split them. If you create multiple
# forwarding rules, duplicate the whole block!
# Remote Logging (we use TCP for reliable delivery)
#
# An on-disk queue is created for this action. If the remote host is
# down, messages are spooled to disk and sent when it is up again.
#$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: 172.20.129.43:2048
*.* @@remote-host:514*
# ### end of the forwarding rule ###
Eu pude receber logs da impressora para o Splunk depois de fazer as modificações acima. No entanto, depois de alguns dias, quando tentei gerar logs da impressora, eu não recebo mais novos logs no Splunk . Eu não fiz nenhuma alteração na cópia modificada do arquivo rsyslog.conf que eu tenho usado. Portanto, não entendo porque o Splunk não recebe mais logs da impressora.
Alterei a configuração para outro número de porta, mas ainda não recebi novos logs da impressora, então voltei para a porta 2048. Também verifiquei duas vezes se havia feito as alterações correspondentes no EWS e no Splunk da impressora corretamente. Eu tenho pesquisado sobre isso e verificação dupla para o dia inteiro, mas sem sucesso.
Nota:
-2048 é a porta usada para recuperar logs da impressora
-172.20.129.43 é o endereço IP da impressora
-172.20.129.156 é o endereço IP do servidor Linux que estou usando
-Eu estou usando o servidor Linux como meu principal ponto de trabalho, na cópia modificada eu adicionei um parágrafo com o destino informando meu endereço IP atual (servidor linux), é a causa porque a impressora parou de enviar logs para o meu servidor desde Eu tenho dirigido os logs para "eu" -config feito usando o mesmo servidor Linux como host de destino - também servidor Linux)
-O texto com astrids é o que adicionei à cópia original