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How to set up external S3 storage

One of the steps involved in running epinio push is storing the requested version of the code in the configured Epinio S3 compatible storage. By default, Epinio installs and configures Minio to use. This document describes how to configure Epinio to use another S3 compatible storage and skip the Minio installation.

The Epinio Helm chart has the following optional parameters:

Variable nameDescriptionMandatoryDefault
minio.enabledWhether to install Minio or notyes"true"
s3.bucketS3 bucket where you want to store your appsyesepinio
s3.endpointS3 endpointyesminio.epinio.svc.cluster.local
s3.accessKeyIDS3 access key id to authenticate to the endpointnorandom value when Minio is enabled
s3.secretAccessKeyS3 secret access key id to authenticate to the endpointnorandom value when Minio is enabled
s3.useSSLUse SSL for encryptionnotrue
s3.regionS3 region where your bucket isno""
s3.certificateSecretAn existing TLS secret to be trusted (if self signed)no"minio-tls" if Minio is enabled

To configure Epinio to store application sources to an external S3 compatible storage, at least the mandatory options should be set.


Some implementations don't need the location, for example, Minio and s3.useSSL has a default value of "true".

For instance, add the following options to your Helm command to make Epinio point to AWS:

--set minio.enabled=false \
--set \
--set s3.bucket=<your_bucket_here> \
--set s3.region=<your_region_here> \
--set s3.accessKeyID=<your_access_key_here> \
--set s3.secretAccessKey=<your_secret_access_key_here> \

If the bucket doesn't exist, Epinio tries to create it when it first writes to it. Make sure the access key and the access secret have enough permissions to create a bucket before writing to it.

When you successfully push a new version of your application, Epinio removes the resources of the earlier staging process from the Kubernetes cluster. It also deletes the earlier version of the sources from S3. This way, Epinio doesn't store more than it needs on the S3 storage and no manual cleanup is necessary.