Foreword: Tomcat log is cut by date

Using cronolog to segment the image of tomcat9 catalina.out Log; Tomcat’s catalina.out The log file cannot be divided by date. All the log files are output and written to a single file catalina.out In this way, the. Out log will become larger and larger, and the cost of operation and maintenance will increase. To archive log files by date, cronolog can be used to realize log segmentation.

1. Step 1: cronlog installation

Use the yum command to install cronlog

yum install cronolog

2. Step 2: modify catalina.sh Documents

Directory: Tomcat/bin/ catalina.sh

Original setting:

After modification:

shift
 # touch "$CATALINA_OUT"
  if [ "$1" = "-security" ] ; then
    if [ $have_tty -eq 1 ]; then
      echo "Using Security Manager"
    fi
    shift
    eval $_NOHUP "\"$_RUNJAVA\"" "\"$LOGGING_CONFIG\"" $LOGGING_MANAGER $JAVA_OPTS $CATALINA_OPTS \
      -D$ENDORSED_PROP="\"$JAVA_ENDORSED_DIRS\"" \
      -classpath "\"$CLASSPATH\"" \
      -Djava.security.manager \
      -Djava.security.policy=="\"$CATALINA_BASE/conf/catalina.policy\"" \
      -Dcatalina.base="\"$CATALINA_BASE\"" \
      -Dcatalina.home="\"$CATALINA_HOME\"" \
      -Djava.io.tmpdir="\"$CATALINA_TMPDIR\"" \
      org.apache.catalina.startup.Bootstrap "$@" start \
      2&>&1 | /usr/local/sbin/cronolog "$CATALINA_BASE/logs/catalina-%Y-%m-%d.out" &

  else
    eval $_NOHUP "\"$_RUNJAVA\"" "\"$LOGGING_CONFIG\"" $LOGGING_MANAGER $JAVA_OPTS $CATALINA_OPTS \
      -D$ENDORSED_PROP="\"$JAVA_ENDORSED_DIRS\"" \
      -classpath "\"$CLASSPATH\"" \
      -Dcatalina.base="\"$CATALINA_BASE\"" \
      -Dcatalina.home="\"$CATALINA_HOME\"" \
      -Djava.io.tmpdir="\"$CATALINA_TMPDIR\"" \
      org.apache.catalina.startup.Bootstrap "$@" start \
      2&>&1 | /usr/local/sbin/cronolog "$CATALINA_BASE/logs/catalina-%Y-%m-%d.out" &

  fi

3. Step 3: restart Tomcat

Restart Tomcat and the log will take effect according to the date. A screenshot of the log file is shown below.