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Is it possible to get logrotate to consider logfiles in a directory and all its subdirectories? (i.e. without explicitly listing the subdirectories.)

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2 Answers 2

up vote 37 down vote accepted

How deep do your subdirectories go?

/var/log/basedir/*.log /var/log/basedir/*/*.log {
    rotate 5

Will rotate all .log files in basedir/ as well as all .log files in any direct child of basedir. If you also need to go 1 level deeper just add another /var/log/basedir/*/*/*.log until you have each level covered.

This can be tested by using a separate logrotate config file which contains a constraint that will not be met (a high minsize) and then running log rotate yourself in verbose mode

logrotate -d testconfig.conf

the -d flag will list each log file it is considering to rotate.

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Thanks! Looks like -d puts logrotate in dry run mode (i.e. doesn't actually change anything) actually. – ithinkihaveacat Dec 3 '10 at 15:36
Ah, that is even better! – Dan R Dec 3 '10 at 16:35
Not really directly relevant but probably useful to someone. the -f option tells logrotate to "force run". a bare word at the end of the command is a config file to use instead of the default. so logrotate -f /some/config means run with that config file, and always run even if the config file says it's not time to run yet. To my untrained eyes, and to my predecessor who put in a cron job with that, it seemed like -f was just specifying the config file. Quite confusing. – Dan Pritts Oct 5 at 16:39

In my case, the depth of subdirectories can change without warning, so I set up a bash script to find all subdirectories and create a config entry for each directory. It's also important for me to keep the structure of subdirectories after rotation, which wildcards (i.e. @DanR's answer) didn't seem to do. If you're doing daily logrotations, you could put this script in a daily cron-job.

#destdir=${basedir} # if you want rotated files in the same directories
destdir=/var/log/archivedir/ #if you want rotated files somewhere else
> ${config_file} #clear existing config_file contents

subfolders = $(find ${basedir} -type d)

for ii in ${subfolders}
    jj=${ii:${#basedir}} #strip off basedir, jj is the relative path

    #append new entry to config_file
    echo "${basedir}${jj}/* {
        olddir ${destdir}${jj}/
        rotate 5
    }" >> ${config_file}

    #add one line as spacing between entries
    echo "\n" >> ${config_file}

    #create destination folder, if it doesn't exist
    [ -d ${destdir}${jj} ] || mkdir ${destdir}${jj}

Like @DanR suggested, test with logrotate -d

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