Hi,

We are trying to encrypt log files via logrotate & cron, and I hope someone here can help out a bit.

Our logrotate configuration file contains:

    olddir gpg/
    compress
    compresscmd /usr/bin/gpg
    compressoptions -vv --verbose --encrypt --default-key A4DB7xxxD98
    compressext .gpg

Now, when logrotates runs the above from cron, we're getting:

gpg: cannot open '/dev/tty': No such device or address
error: failed to compress log /logrotate/gpg//test.log.1

We know --no-tty exists, but it doesn't help in this case, because when using that:

gpg: Sorry, no terminal at all requested - can't get input

I do see various howto's that use gpg to encrypt their logfiles this way, for example: https://www.ctrl.blog/entry/gdpr-web-server-logs.html

So, we're asking the experts here: What could be our issue, and how to make this work..?

This is on debian 10.9

Thanks for any pointers!

MJ

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