Is log Insight 3.3.1 able to read and parse mysql Log Files? I know there isn't a content pack available for mysql.
LI can handle any human-readable text send over syslog or the ingestion API. The LI agent can read any filesystem log that is human-readable. The LI agent does not have a XML parser today, but you could use the regex parser or extracted fields in LI. Long story short, yes LI supports this.