How to do log rotation?

[wangfenjin]

I had post this question in stackexchange but seems no one can answer the question, so I think I can post in here.

I find this PR ethereumproject/go-ethereum#426 but it's in the previous repo.

I don't see any options allow me to do log rotate from here https://geth.ethereum.org/docs/interface/command-line-options

So how should we do log rotation? Thanks.

[holiman]

We decided not to handle 'advanced logging' inside go-ethereum. There have, historically, been suggestions to implement log output to file, which leads to: implement log rotation. The latter of these is pretty intricate, since it involves rotating files and compressing older files, removing some files, and generally: handle a lot of errors, and add a bunch of configuration options.

This is similar to adding ssl certificates on http endpoint: it's definitely reasonable, but it's a very large surface area, and a lot of added complexity, which there is already external tools that do a lot better than we'll ever be able to.

So for advanced logging, you're better off relying on whatever tools are available on your distro, e.g. redirecting to syslog or some cloud logging (we use papertrail a lot internally). Same for ssl certs: an nginx wrapper is a much more robust and capable ssl terminator with all the bells and whistles already implemented.