This appender will allow log4net to be configured to send log messages to ELMAH directly. This way ELMAH can be the log manager of record for sites while still allowing specific logging parameters to be controlled with log4net as usual.
Common Logging Adapter for Log4Net. Unlike Common.Logging.Log4Net1215 etc., this package is not tied to a particular version of Log4Net, so does not need to be upgraded for each new version of Log4Net.
log4stash is a log4net appender for easy logging of exceptions and messages to Elasticsearch indices.
You can configure few filters to analyze log events before they got sended to Elasticsearch similar to the filters on logstash.