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Initial setup

First of all, make sure you are running the latest version of the eb cli:

pip3 install --upgrade --user awsebcli

Use a t2.micro instance if you are using the AWS free tier. Otherwise, use t3.micro or t3a.micro with spot to get the lowest price.

Due to memory requirements, the nano size does not work since the upgrade to Amazon Linux 2023.

Create environment:

git tag -f -a -m "First deploy" eb
eb init rssbox --platform ruby-3.2 --keyname id_rsa
eb create --single --instance_type t2.micro

Using spot instances:

eb create --single --enable-spot --instance-types t3.micro,t3a.micro

With an application load balancer:

eb create --enable-spot --instance-types t3.micro,t3a.micro --elb-type application --envvars ASG_HEALTH_CHECK_TYPE=ELB

With a network load balancer:

eb create --enable-spot --instance-types t3.micro,t3a.micro --elb-type network --envvars ASG_HEALTH_CHECK_TYPE=ELB

Launch in a specific VPC (alternatively omit --vpc and update vpc.config):

eb create --vpc --instance-types t3.micro,t3a.micro --elb-type application --envvars ASG_HEALTH_CHECK_TYPE=ELB

The following environment variables are automatically set:

  • BUNDLER_DEPLOYMENT_MODE=true
  • BUNDLE_WITHOUT=test:development
  • RACK_ENV=production
  • RAILS_SKIP_ASSET_COMPILATION=false
  • RAILS_SKIP_MIGRATIONS=false

Deploy

Deploy with:

./bin/eb-deploy --staged

To export a deployable zip, use:

git archive --format zip -9 -o rssbox.zip HEAD

While testing, it is a lot faster to deploy if there is only one instance running.

Upgrade major Ruby version

To upgrade an existing app to a new major version of Ruby:

aws elasticbeanstalk list-available-solution-stacks --region us-west-2 --query 'SolutionStacks[?contains(@,`Ruby`)==`true`]'
aws elasticbeanstalk update-environment --region us-west-2 --environment-name rssbox --solution-stack-name "64bit Amazon Linux 2023 v4.0.1 running Ruby 3.2"

Supported Ruby versions: https://docs.aws.amazon.com/elasticbeanstalk/latest/platforms/platforms-supported.html#platforms-supported.ruby

Misc

Application files are located at:

  • /var/app/current

Logs on the instances are available at:

  • /var/log/web.stdout.log

Elastic Beanstalk deployment logs:

  • /var/log/eb-engine.log