On Wed, 6 Apr 2016, Giulio Vaccari wrote:
By the way, I must use logstash because I must parse log from many OS, some of them are quite old so in many case I must grok the log using logstash.
rsyslog has mmnormalize that is far faster at parsing logs than grok filters, and current versions have a mmgrok module that lets you use grok parsers in rsyslog.
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