Redirect systemd logs in file
Step 1:
Open service file and update following tags, in this tutorial we use tomcat service.
StandardOutput=syslog
StandardError=syslog
SyslogIdentifier=tomcat
vi /lib/systemd/system/tomcat.service
[Unit]
Description=Apache Tomcat Web Application Container
After=syslog.target network.target
[Service]
Type=forking
Environment=JAVA_HOME=/usr/lib/jvm/jre
Environment=CATALINA_PID=/opt/tomcat/temp/tomcat.pid
Environment=CATALINA_HOME=/opt/tomcat
Environment=CATALINE_BASE=/opt/tomcat
Environment='CATALINE_OPTS=-Xms128M -Xmx765M -server -XX:+UseParallelGC'
Environment='JAVA_OPTS=-Djava.awt.haedless=true -Djava.security.egd=file:/dev/./urandom'
ExecStart=/opt/tomcat/bin/startup.sh
ExecStop=/bin/kill -15 $MAINPID
User=tomcat
Group=tomcat
StandardOutput=syslog
StandardError=syslog
SyslogIdentifier=tomcat
[Install]
WantedBy=multi-user.target
Step 2:
Create file in rsyslog.d directory in any name
vi /etc/rsyslog.d/tomcat.conf
if $programname == 'tomcat' then /var/log/tomcat/file.log
& stop
Step 3:
Restart rsyslog and tomcat
systemctl daemon-reloadsystemctl restart rsyslog tomcat
Step 4:
Check log file
cat /var/log/tomcat/file.log
Thanks,
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