MongoDB logrotate settings

I wanted to do log rotation of MongoDB, so I checked and set it. (Version is 3.4)

Thing you want to do

I want to rotate the log once a day. I want to name the log file after rotation mongod.log_yyyymmdd. I want to compress automatically. I want to automatically delete it after a certain period of time instead of continuing to accumulate it.

What i did

Set as follows in logrotate

# vi /etc/logrotate.d/mongod

/usr/local/var/log/mongodb/mongod.log
{
    missingok
    daily
    dateext
    rotate 30
    create
    compress
    delaycompress
    postrotate
      /bin/kill -SIGUSR1 `cat /var/run/mongodb/mongod.pid 2> /dev/null` 2> /dev/null || true
      find /data/mongodb/logs -type f -size 0 -regextype posix-awk -regex "^\/usr\/local\/var\/log\/mongodb\/mongod\.log\.[0-9]{4}-[0-9]{2}-[0-9]{2}T[0-9]{2}-[0-9]{2}-[0-9]{2}$" -execdir rm {} \; >/dev/null 2>&1
    endscript
}

Note

When I log rotate MongoDB with kill -SIGUSR1, MongoDB creates an empty log file named mongod.log.yyyy-mm-ddTxx-xx-xx, so I use find to delete it.

If you choose nocreate instead of create, MongoDB will lose track of the log files MongoDB terminates abnormally at the timing of rotation.

Reference

Automating MongoDB Log Rotation