Automatic `/etc/hosts` management with Serf - Kentaro Kuribayashi's blog

Problem In the cloud world, many hosts appear and vanish. Since we don't want to bother to manage some internal DNS service while keeping its availability, we have been updating /etc/hosts file periodically with cron and AWS API. There are, however, several problems in that way of updating /etc/hosts: It's far from real time There are many other components that need to be updated in a likely way;

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