Notes on what to do when EC2 is set up with t2.micro

I accidentally terminate the EC2 instance for study instead of stopping it, and sometimes I recreate it, so I will keep a memorandum about what to do when launching the instance.

Various update

sudo yum update -y 

Increase swap memory

In the case of an instance with a small memory such as t2micro, it will be dropped by a process that uses a lot of memory like Angular's prod build, so increase the swap memory to avoid it.

#Create a 4GB swap file (it will fail if there are a lot of bs because the memory is low)
sudo dd if=/dev/zero of=/swapfile bs=1M count=4096
#Grant read / write permission to swap file
sudo chmod 600 /swapfile
#Swap space setup
sudo mkswap /swapfile
#Enable swap space
sudo swapon /swapfile
#Check swap space
sudo swapon -s

Reference: https://aws.amazon.com/jp/premiumsupport/knowledge-center/ec2-memory-swap-file/

When swapon, you can confirm that the file is created with the specified size as shown below

$ sudo swapon -s
Filename                                Type            Size    Used    Priority
/swapfile                               file            4194300 0       -2

If you execute the free command, you can confirm that it is recognized as memory.

$ free
              total        used        free      shared  buff/cache   available
Mem:        1006940       82724       63424         404      860792      771392
Swap:       4194300           0     4194300

Enable swap at startup

Edit / etc / fstab with vi

sudo vi /etc/fstab

Add the following line to the end and save

/swapfile swap swap defaults 0 0

Install Git

sudo yum install git-all -y

Reference: https://git-scm.com/book/ja/v2/%E4%BD%BF%E3%81%84%E5%A7%8B%E3%82%81%E3%82%8B-Git % E3% 81% AE% E3% 82% A4% E3% 83% B3% E3% 82% B9% E3% 83% 88% E3% 83% BC% E3% 83% AB

Git user settings

git config --global user.name "username"
git config --global user.email [email protected]

Reference: https://git-scm.com/book/ja/v2/%E4%BD%BF%E3%81%84%E5%A7%8B%E3%82%81%E3%82%8B-% E6% 9C% 80% E5% 88% 9D% E3% 81% AEGit% E3% 81% AE% E6% A7% 8B% E6% 88% 90

Install Docker and docker-compose

#docker installation
sudo yum install docker -y
#docker service started
sudo service docker start
#Settings that allow docker commands to be used without sudo
sudo usermod -a -G docker ec2-user
#Set docker service to start automatically
sudo systemctl enable docker

Reference: https://docs.aws.amazon.com/ja_jp/AmazonECS/latest/developerguide/docker-basics.html 　　　http://docs.docker.jp/v1.11/engine/admin/systemd.html

Install docker-compose

#Binary download
sudo curl -L "https://github.com/docker/compose/releases/download/1.27.4/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
#Grant execute permission
sudo chmod +x /usr/local/bin/docker-compose

Reference: https://docs.docker.com/compose/install/

If this is left as it is, Permission Error: [Errno 13] Permission denied will occur, so exit from EC2 and reconnect.

Install Node.js

#Download installer&Run
curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.34.0/install.sh | bash
# nvm.sh run
. ~/.nvm/nvm.sh
# Node.js installation
nvm install node

Reference: https://docs.aws.amazon.com/ja_jp/sdk-for-javascript/v2/developer-guide/setting-up-node-on-ec2-instance.html