Scale Up Down Add shard/remove shard Shard names/numeration/iteration Kitchen VirtualBox/Vagrant Blocker Issues Docker Init system is down Cluster discovery Name? Build through list of environments Hidden replicas for backup Tips Do not use secondary reads to scale overall read throughput. // why? Noop disk scheduler transparent huge pages XFS fs atime limits https://docs.mongodb.com/manual/reference/replica-configuration/#rsconf.settings.electionTimeoutMillis / https://docs.mongodb.com/manual/reference/replica-configuration/#rsconf.protocolVersion For configs sharding.clusterRole: configsvr 3.2.8 - Debian Jessie Packages Ops Manager as Standalone cookbook Gem load Require bundler/setup to have exact gem set or use gem ‘name’, ‘version’ Parts Install Based on OS Install method: Disable default Service Daemons configs and folders