A brief analysis of the relationship between various Tomcat logs and the segmentation of catalina.out files

#Enter /etc/logrotate.d. This directory is the configuration directory of the logrotate.d subsystem. It is not recommended to modify the main configuration file.
cd /etc/logrotate.d
cat > tomcat<<EOF
/opt/tomcat/logs/catalina.out{
        copytruncate
	daily
        rotate 15
        compress
        missingok
        notifempty
        size 200M
        dateext
}
EOF

compress #Compress the dumped logs with gzip nocompress #Do not perform gzip compression copytruncate #Used for log files that are still open, back up and truncate the current log; it is a copy-first-then-clear method. There is a time difference between copying and clearing, and some log data may be lost.
nocopytruncate #Backup the log file but do not truncate it create mode owner group #Specify the properties of creating new files during rotation, such as create 0777 nobody nobody
nocreate #Do not create a new log file delaycompress #When used with compress, the dumped log file will not be compressed until the next dump nodelaycompress #Override the delaycompress option and compress while dumping.
missingok #If the log is missing, no error is reported and the next log is rolled. errors address #Error messages during storage are sent to the specified Email address ifempty #Even if the log file is empty, the file is rotated. This is the default option of logrotate.
notifempty #When the log file is empty, do not rotate mail address #Send the dumped log file to the specified E-mail address nomail #Do not send the log file when dumping olddir directory #Put the dumped log file in the specified directory, which must be in the same file system as the current log file noolddir #Put the dumped log file and the current log file in the same directory sharedscripts #Run the postrotate script, which is used to execute the script once after all logs are rotated. If this is not configured, the script will be executed once after each log rotation. prerotate #Instructions to be executed before logrotate dumps, such as modifying file attributes and other actions; must be independent lines. postrotate #Instructions to be executed after logrotate dumps, such as restarting (kill -HUP) a service! Must be a separate line daily #Specify the dump cycle as dailyweekly #Specify the dump cycle as weeklymonthly #Specify the dump cycle as monthlyrotate count #Specify the number of dumps before the log file is deleted. 0 means no backup, 5 means retaining 5 backupsdateext #Use the current date as the naming formatdateformat .%s #Use with dateext, appear immediately on the next line, define the file name after the file is cut, must be used with dateext, only supports %Y %m %d %s these four parameterssize value and unit #The log file is dumped when it reaches the specified size. The missing unit is bytes, which can be specified in KB or MB