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docker-machine で作ったEC2上のホストにスワップを作成

Last updated at Posted at 2017-09-22

この記事はだめらしいです
未検証ですが
https://dev.classmethod.jp/cloud/aws/al2-swapfile-fallocate-ng/

以下残骸

$ docker-machine ssh hoge

ログイン後下記のコマンド

$ sudo systemctl enable rc-local
$ sudo vi /etc/rc.local

起動時に毎回swap をマウント

下記のスクリプトの移植版
Amazon EC2(Linux)のswap領域ベストプラクティス

#!/bin/bash
SWAPFILENAME=/swap.img
MEMSIZE=`cat /proc/meminfo | grep MemTotal | awk '{print $2}'`
 
if [ $MEMSIZE -lt 2097152 ]; then
  let SIZE=$MEMSIZE*2
elif [ $MEMSIZE -lt 8388608 ]; then
  let SIZE=$MEMSIZE
elif [ $MEMSIZE -lt 67108864 ]; then
  let SIZE=$MEMSIZE/2
else
  let SIZE=4194304
fi
 
fallocate -l ${SIZE}k $SWAPFILENAME && chmod 600 $SWAPFILENAME && mkswap $SWAPFILENAME && swapon $SWAPFILENAME

最後reboot して終わり

$ sudo reboot
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