sonic-buildimage/files/image_config/rsyslog/rsyslog-config.sh

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#!/bin/bash
PLATFORM=`sonic-cfggen -H -v DEVICE_METADATA.localhost.platform`
# Parse the device specific asic conf file, if it exists
ASIC_CONF=/usr/share/sonic/device/$PLATFORM/asic.conf
if [ -f "$ASIC_CONF" ]; then
source $ASIC_CONF
fi
# On Multi NPU platforms we need to start the rsyslog server on the docker0 ip address
# for the syslogs from the containers in the namespaces to work.
# on Single NPU platforms we continue to use loopback adddres
if [[ ($NUM_ASIC -gt 1) ]]; then
udp_server_ip=$(ip -j -4 addr list docker0 | jq -r -M '.[0].addr_info[0].local')
else
udp_server_ip=$(ip -j -4 addr list lo scope host | jq -r -M '.[0].addr_info[0].local')
fi
sonic-cfggen -d -t /usr/share/sonic/templates/rsyslog.conf.j2 -a "{\"udp_server_ip\": \"$udp_server_ip\"}" >/etc/rsyslog.conf
systemctl restart rsyslog