Analyze log files from many languages using a single tool. And recommendations of logging frameworks [closed]

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We have a system build on lots of languages. The ones we are interested in logging, in order of priority, are:

• C/C++
• PHP
• C#
• Bash
• Java

Wish list:

• If it is possible, we would like logging to be achieved from the above languages in such a way that we may use a single log viewing tool for all of them. Ideally they would be in the same format, but next to that in as few for开发者_运维知识库mats as possible and readable from as many log file viewers as possible.
• If it is possible logging to a single log file or a set of log files would be nice. With a possibility to filter based on the source language that is being logged.
• We would like to copy the log files (or should be log to a database and copy it instead?) from multiple servers to a single location. So that we can analyze the log files from many servers at the same time (to see if any of our servers execute a certain piece legacy code for example).
• Being able to change logging level at runtime would be nice.

Thank you for reading! It's quite a complex problem, I hope someone has wrestled with it before and has some valuable information!

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If you are using linux, syslog is great! The project I am working on right now uses syslog for most of our logging; everything goes to the same place (/var/log/messages) and you are able to log from many different tools all to the same log file. Apparently you can also use syslog to log to a remote server.

Otherwise if you are on windows you might consider writing to the event log.