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December 14, 2020 05:23
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Speed up the AWS Elastic Beanstalk of your Rails deployment with bundle/assets caching
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# .ebextensions/cache.config | |
files: | |
"/opt/elasticbeanstalk/hooks/appdeploy/pre/02a_set_cache.sh": | |
mode: "000755" | |
owner: root | |
group: root | |
content: | | |
#!/bin/bash | |
set -xe | |
EB_APP_STAGING_DIR=$(/opt/elasticbeanstalk/bin/get-config container -k app_staging_dir) | |
BUCKET="elasticbeanstalk-PUT_YOUR_REGION-PUT_YOUR_ACCOUNT_ID" | |
mkdir -p /tmp/cache | |
if aws s3 ls s3://${BUCKET}/cache/gem.tar.gz ; then | |
aws s3 cp --quiet s3://${BUCKET}/cache/gem.tar.gz /tmp/cache/gem.tar.gz | |
fi | |
if aws s3 ls s3://${BUCKET}/cache/node_modules.tar.gz ; then | |
aws s3 cp --quiet s3://${BUCKET}/cache/node_modules.tar.gz /tmp/cache/node_modules.tar.gz | |
fi | |
if aws s3 ls s3://${BUCKET}/cache/assets.tar.gz ; then | |
aws s3 cp --quiet s3://${BUCKET}/cache/assets.tar.gz /tmp/cache/assets.tar.gz | |
fi | |
[ -f /tmp/cache/gem.tar.gz ] && tar -xf /tmp/cache/gem.tar.gz -C $EB_APP_STAGING_DIR && chown webapp:webapp -R "$EB_APP_STAGING_DIR/vendor/bundle" | |
[ -f /tmp/cache/node_modules.tar.gz ] && tar -xf /tmp/cache/node_modules.tar.gz -C $EB_APP_STAGING_DIR && chown webapp:webapp -R "$EB_APP_STAGING_DIR/node_modules" | |
[ -f /tmp/cache/assets.tar.gz ] && tar -xf /tmp/cache/assets.tar.gz -C $EB_APP_STAGING_DIR && chown webapp:webapp -R "$EB_APP_STAGING_DIR/tmp" | |
exit 0 | |
"/opt/elasticbeanstalk/hooks/appdeploy/pre/11a_build_cache.sh": | |
mode: "000755" | |
owner: root | |
group: root | |
content: | | |
#!/bin/bash | |
set -xe | |
EB_APP_STAGING_DIR=$(/opt/elasticbeanstalk/bin/get-config container -k app_staging_dir) | |
cd $EB_APP_STAGING_DIR | |
mkdir -p /tmp/cache | |
tar -zcf /tmp/cache/gem.tar.gz vendor/bundle | |
tar -zcf /tmp/cache/node_modules.tar.gz node_modules | |
tar -zcf /tmp/cache/assets.tar.gz tmp/cache/assets | |
BUCKET="elasticbeanstalk-PUT_YOUR_REGION-PUT_YOUR_ACCOUNT_ID" | |
aws s3 cp /tmp/cache/gem.tar.gz s3://${BUCKET}/cache/gem.tar.gz | |
aws s3 cp /tmp/cache/node_modules.tar.gz s3://${BUCKET}/cache/node_modules.tar.gz | |
aws s3 cp /tmp/cache/assets.tar.gz s3://${BUCKET}/cache/assets.tar.gz |
One consideration is that somehow the current rails stack will use
root
user andvendor/bundle
is not available and will fail thetar
command.
Is there a fix for that?
Thanks for posting this. If I want to use this with multiple apps all running in the same region, does it stand to reason that modifying the BUCKET
would be the right way to support that?
e.g.
BUCKET="elasticbeanstalk-PUT_YOUR_REGION-PUT_YOUR_ACCOUNT_ID-APP_NAME"
Also, I assume I can reference my app's env vars during 02a_set_cache.sh
?
Thanks again!
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I updated my gist with commands to push the cache to the Elastic Beanstalk S3 bucket. You'll find it in your console