vi /etc/rsyslog.conf
#Use default timestamp format
#$ActionFileDefaultTemplate RSYSLOG_TraditionalFileFormat
$ActionFileDefaultTemplate RSYSLOG_FileFormat
service rsyslog restart
https://rsyslog-5-8-6-doc.neocities.org/rsyslog_conf_templates.html
https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux_OpenStack_Platform/3/html/Installation_and_Configuration_Guide/Starting_rsyslog_Server.html
