Sumologic Rsyslog Fowarder

Install rsyslog (usually already installed

Add tls

sudo apt-get -y install rsyslog-gnutls

Add cert

 mkdir -p /etc/rsyslog.d/keys/ca.d && curl -L https://www.digicert.com/CACerts/DigiCertHighAssuranceEVRootCA.crt.pem -o /etc/rsyslog.d/keys/ca.d/digicert_ca.crt

# /etc/rsyslog.conf configuration file for rsyslog
#
# For more information install rsyslog-doc and see
# /usr/share/doc/rsyslog-doc/html/configuration/index.html
#
# Default logging rules can be found in /etc/rsyslog.d/50-default.conf


#################
#### MODULES ####
#################

module(load="imuxsock") # provides support for local system logging
#module(load="immark")  # provides --MARK-- message capability

# provides UDP syslog reception
#module(load="imudp")
#input(type="imudp" port="514")

# provides TCP syslog reception
#module(load="imtcp")
#input(type="imtcp" port="514")

# provides kernel logging support and enable non-kernel klog messages
# module(load="imklog" permitnonkernelfacility="on")

###########################
#### GLOBAL DIRECTIVES ####
###########################

#
# Use traditional timestamp format.
# To enable high precision timestamps, comment out the following line.
#
$ActionFileDefaultTemplate RSYSLOG_TraditionalFileFormat

# Filter duplicated messages
$RepeatedMsgReduction on

#
# Set the default permissions for all log files.
#
$FileOwner syslog
$FileGroup adm
$FileCreateMode 0640
$DirCreateMode 0755
$Umask 0022
$PrivDropToUser syslog
$PrivDropToGroup syslog

#
# Where to place spool and state files
#
$WorkDirectory /var/spool/rsyslog

#
# Include all config files in /etc/rsyslog.d/
#
$IncludeConfig /etc/rsyslog.d/*.conf


# module(load="omelasticsearch")
# template(name="testTemplate"
#          type="list"
#          option.json="on") {
#            constant(value="{")
#              constant(value="\"timestamp\":\"")      property(name="timereported" dateFormat="rfc3339")
#              constant(value="\",\"message\":\"")     property(name="msg")
#              constant(value="\",\"host\":\"")        property(name="hostname")
#              constant(value="\",\"severity\":\"")    property(name="syslogseverity-text")
#              constant(value="\",\"facility\":\"")    property(name="syslogfacility-text")
#              constant(value="\",\"syslogtag\":\"")   property(name="syslogtag")
#            constant(value="\"}")
#          }
# action(type="omelasticsearch"
#        server="myserver.local"
#        serverport="9200"
#        template="testTemplate"
#        searchIndex="test-index"
#        searchType="test-type"
#        bulkmode="on"
#        queue.type="linkedlist"
#        queue.size="5000"
#        queue.dequeuebatchsize="300"
#        action.resumeretrycount="-1")


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


# Provides UDP syslog reception
$ModLoad imudp.so
$UDPServerRun 514
# Provides TCP syslog reception
$ModLoad imtcp.so
$InputTCPServerRun 514
# Copy to local files by host folder
$template DynamicFile,"/var/log/hosts/%HOSTNAME%/%syslogfacility-text%.log"
*.*    -?DynamicFile


# Setup disk assisted queues# Setup disk assisted queues
$WorkDirectory /var/spool/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


# RsyslogGnuTLS
$InputTCPServerKeepAlive on
$DefaultNetstreamDriverCAFile /etc/rsyslog.d/keys/ca.d/digicert_ca.crt

template(name="SumoFormat" type="string" string="<%pri%>%protocol-version% %timestamp:::date-rfc3339% %HOSTNAME% %app-name% %procid% %msgid% <MY TOKEN FROM SYSLOG CLOUD COLLECTOR SOURCE> %msg%\n")

action(type="omfwd"
    protocol="tcp"
    target="syslog.collection.us2.sumologic.com"
    port="6514"
    template="SumoFormat"
    StreamDriver="gtls"
    StreamDriverMode="1"
    StreamDriverAuthMode="x509/name"
    StreamDriverPermittedPeers="syslog.collection.*.sumologic.com")

systemctl restart rsyslog

If using LXD

lxc init ubuntu:20.04 rsyslog
lxc network attach lxdbr0 rsyslog eth0 eth0
lxc config device set rsyslog eth0 ipv4.address 172.x.x.x
lxc config device add lxd-rsyslog tcp514 proxy nat=true listen=tcp:10.x.x.x:514 connect=tcp:0.0.0.0:514
lxc config device add lxd-rsyslog udp514 proxy nat=true listen=udp:10.x.x.x:514 connect=udp:0.0.0.0:514
lxc start rsyslog
lxc shell rsyslog
logger jtest

logger --udp -n 172.x.x.x "remote test"
echo "test" | nc -v -u -w 0 172.x.x.x 514