O Rsyslog não envia logs para o servidor logstash na porta

Question

Eu tenho dois rsyslog-client e rsyslog-server. Quando eu tentei "logger -p local1.notice SOMETHING" eu não vejo nenhuma informação no servidor de um cliente, mas de outro vejo saída logstash.

Eu copiei o rsyslog.conf, ele é idêntico nesses dois servidores. O que há de errado?

Quando eu testo a conexão via telnet x.x.x.x 10514 do servidor com problemas, a conexão telnet está ok e vejo os logs do tcpdump. E quando eu mudo tcp escuta porta logstash para 514 tudo funciona corretamente.

Quando faço logger -p no problem client eu não vejo nada no tcpdump -i algum nele.

Mas se eu fizer a mesma coisa no cliente "OK", vejo o tráfego externo via tcpdump para a porta 10514 (ou algo diferente).

Quando eu mudo a porta do logstash para o 514 problema resolvido.

[root@centos-25 ~]# cat /etc/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


#### RULES ####

$template DynFile,"/var/log/kibana/system-%HOSTNAME%.log"

# 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                ?DynFile


# 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


#### Logstash #####
# remote host is: name/ip:port, e.g. 192.168.0.1:514, port optional
local1.notice @@192.168.253.26:10514;json-template
# ### end of the forwarding rule ###
$LocalHostName centos-25

# Include /var/log/dmesg for logging
$InputFileName /var/log/dmesg
$InputFileTag dmesg:
$InputFileStateFile stat-file1

$InputFileSeverity notice
$InputFileFacility local1
$InputRunFileMonitor
# end of include dmesg

Este é o teste do cliente OK: logger -p local1.notice "teste do problema centos-26"

Saída do Logstash:

{
     "@timestamp" => "2017-07-04T10:43:55.121Z",
       "@version" => "1",
        "message" => "Test From Centos-26",
     "sysloghost" => "centos-26",
       "severity" => "notice",
       "facility" => "local1",
    "programname" => "root",
         "procid" => "-",
           "host" => "192.168.253.26",
           "port" => 40962,
           "type" => "rsyslog"
}

e isso é do nó do problema: logger -p local1.notice "teste do problema centos-25"

Nada na saída

O rsyslog.conf é idêntico nestes clientes.

Isso é do cliente OK:

# 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


#### RULES ####

$template DynFile,"/var/log/kibana/system-%HOSTNAME%.log"

# 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                ?DynFile


# 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


#### Logstash #####
# remote host is: name/ip:port, e.g. 192.168.0.1:514, port optional
local1.notice @@192.168.253.26:10514;json-template
# ### end of the forwarding rule ###
$LocalHostName centos-26

# Include /var/log/dmesg for logging
$InputFileName /var/log/dmesg
$InputFileTag dmesg:
$InputFileStateFile stat-file1

$InputFileSeverity notice
$InputFileFacility local1
$InputRunFileMonitor
# end of include dmesg