Why Keep Swap Memory in Linux?

To cache rarely accessed pages. It is still better to keep them in swap than paging them out (discarding). But always have enough RAM to hold your expected load. Thorough Perf Tuning Guide https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html-single/performance_tuning_guide/index Reference https://haydenjames.io/linux-performance-almost-always-add-swap-space/ Written with StackEdit.

etcd: A Reliable Distributed KV Store

Pronounced et-cee-dee Persistent KV store Uses Raft protocol to maintain data consistency Developed in Go Popular Use case: Kubernetes Installation (OSX) Step 1 $ ruby -e “$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)” < /dev/null 2> /dev/null Step 2 $ brew install etcd Step 3 $ which etcd /usr/local/bin/etcd Start Server and Make Requests Step 4 $ /usr/local/bin/etcd [WARNING] … More etcd: A Reliable Distributed KV Store