How to use AWS CLI v2 and s3cmd with e3 Object Storage

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e3 Object Storage: Linux CLI Guide

Welcome! This guide shows you how to use AWS CLI v2 and s3cmd with eazyBackup e3 Object Storage.

You can copy and paste the example commands as-is, replacing the placeholders where noted.

What You Need

• Your e3 ACCESS_KEY

• Your e3 SECRET_KEY

• Your bucket name

• Linux shell access

Our S3-compatible endpoint used in examples:

s3.ca-central-1.eazybackup.com

Environment variables:

Shell variables (like ACCESS_KEY, SECRET_KEY, BUCKET, and ENDPOINT) are just named placeholders in your terminal session. We use them in KB examples so you can set your e3 details once, then copy/paste the rest of the commands without editing every line.

Set the recommended environment variables in your terminal session:

export ACCESS_KEY="<YOUR_E3_ACCESS_KEY>"
export SECRET_KEY="<YOUR_E3_SECRET_KEY>"
export ENDPOINT="s3.ca-central-1.eazybackup.com"
export ENDPOINT_URL="https://$ENDPOINT"
export REGION="ca-central-1"
export BUCKET="<YOUR_BUCKET_NAME>"

Option A: AWS CLI v2

AWS CLI is Amazon's official CLI, but it works great with e3 when you provide a custom endpoint.

A more permanent setup: use an e3 profile

Most users prefer a named AWS profile so they do not have to export credentials every time.

1. Create an e3 profile:

aws configure --profile e3

When prompted:

• AWS Access Key ID: your e3 access key

• AWS Secret Access Key: your e3 secret key

• Default region name: ca-central-1

• Default output format: (optional) json

1. Set e3-friendly S3 settings for that profile:

aws configure set region "ca-central-1" --profile e3
aws configure set s3.addressing_style virtual --profile e3

Where AWS CLI stores credentials (~/.aws/credentials)

AWS CLI profiles are stored in two files in your home directory:

• ~/.aws/credentials: secrets (access keys)

• ~/.aws/config: profile settings (region, S3 addressing style, etc.)

If you use aws configure --profile e3, AWS CLI will create/update these files for you.

You can also create them manually.

Create the directory:

mkdir -p ~/.aws
chmod 700 ~/.aws

Create or edit ~/.aws/credentials:

[e3]
aws_access_key_id = YOUR_E3_ACCESS_KEY
aws_secret_access_key = YOUR_E3_SECRET_KEY

Lock down permissions:

chmod 600 ~/.aws/credentials

Create or edit ~/.aws/config:

[profile e3]
region = ca-central-1
s3 =
  addressing_style = virtual

Then use the profile in commands:

aws --profile e3 --endpoint-url "https://s3.ca-central-1.eazybackup.com" s3 ls

Notes:

• You will still supply the e3 endpoint on commands using --endpoint-url "$ENDPOINT_URL" (We have found that AWS CLI does not reliably store an endpoint override in the profile for all commands).

• Keeping e3 in its own profile helps avoid accidentally talking to AWS S3 with the same commands.

Install AWS CLI v2 on Linux

curl -L --show-error \
  "https://awscli.amazonaws.com/awscli-exe-linux-x86_64.zip" -o /tmp/awscliv2.zip
unzip -oq /tmp/awscliv2.zip -d /tmp
sudo /tmp/aws/install --bin-dir /usr/local/bin --install-dir /usr/local/aws-cli --update
aws --version

Configure for e3

aws configure set default.region "$REGION"
aws configure set default.s3.addressing_style virtual

Why virtual:

• It uses bucket subdomain style (bucket.endpoint), which we recommend for e3.

Convenience: an aws-e3 wrapper (optional)

If you want to avoid typing --endpoint-url and --profile every time, add this to your shell profile (for example ~/.bashrc):

aws-e3() { aws --profile e3 --endpoint-url "https://s3.ca-central-1.eazybackup.com" "$@"; }

Then you can run:

aws-e3 s3 ls
aws-e3 s3 ls "s3://$BUCKET/"

AWS CLI Examples

List buckets:

aws --profile e3 --endpoint-url "$ENDPOINT_URL" s3 ls

List objects in a bucket:

aws --profile e3 --endpoint-url "$ENDPOINT_URL" s3 ls "s3://$BUCKET/"

Upload a file (PUT):

echo "hello from e3 via aws cli" > /tmp/e3-aws-test.txt
aws --profile e3 --endpoint-url "$ENDPOINT_URL" s3 cp /tmp/e3-aws-test.txt "s3://$BUCKET/e3-aws-test.txt"

Download a file (GET):

aws --profile e3 --endpoint-url "$ENDPOINT_URL" s3 cp "s3://$BUCKET/e3-aws-test.txt" /tmp/e3-aws-test.downloaded.txt
head -n 1 /tmp/e3-aws-test.downloaded.txt

Delete object:

aws --profile e3 --endpoint-url "$ENDPOINT_URL" s3 rm "s3://$BUCKET/e3-aws-test.txt"

Get object metadata:

aws --profile e3 --endpoint-url "$ENDPOINT_URL" s3api head-object \
  --bucket "$BUCKET" --key "e3-aws-test.txt"

Option B: s3cmd

s3cmd is a popular third-party S3 client and works with e3 when configured correctly.

Install s3cmd on Linux

Ubuntu/Debian:

sudo apt-get update
sudo apt-get install -y s3cmd
s3cmd --version

Configure s3cmd for e3

Create a dedicated config:

cat > /tmp/e3-s3cmd.cfg <<EOF
[default]
access_key = $ACCESS_KEY
secret_key = $SECRET_KEY
host_base = $ENDPOINT
host_bucket = %(bucket)s.$ENDPOINT
use_https = True
signature_v2 = False
bucket_location =
verbosity = WARNING
EOF
chmod 600 /tmp/e3-s3cmd.cfg

Important:

• Set both host_base and host_bucket.

• If host_bucket is missing, s3cmd will fall back to the AWS hostname like bucket.s3.amazonaws.com, which can cause failures even when keys are correct.

s3cmd Examples

List buckets:

s3cmd -c /tmp/e3-s3cmd.cfg ls

List objects in a bucket:

s3cmd -c /tmp/e3-s3cmd.cfg ls "s3://$BUCKET/"

Upload a file (PUT):

echo "hello from e3 via s3cmd $(date -Is)" > /tmp/e3-s3cmd-test.txt
s3cmd -c /tmp/e3-s3cmd.cfg put /tmp/e3-s3cmd-test.txt "s3://$BUCKET/e3-s3cmd-test.txt"

Download a file (GET):

s3cmd -c /tmp/e3-s3cmd.cfg get "s3://$BUCKET/e3-s3cmd-test.txt" /tmp/e3-s3cmd-test.downloaded.txt
head -n 1 /tmp/e3-s3cmd-test.downloaded.txt

Delete object:

s3cmd -c /tmp/e3-s3cmd.cfg del "s3://$BUCKET/e3-s3cmd-test.txt"

Get object info:

s3cmd -c /tmp/e3-s3cmd.cfg info "s3://$BUCKET/e3-s3cmd-test.txt"

Troubleshooting

InvalidAccessKeyId with s3cmd

Most common cause:

• host_bucket is not set correctly.

Fix:

• Use host_bucket = %(bucket)s.s3.ca-central-1.eazybackup.com.

FAQ

Is e3 the same as AWS S3?

e3 is S3-compatible, not AWS itself. That means most standard S3 tools work, but you will need to provide the e3 endpoint and correct addressing configuration.

Which client should I use?

• We prefer AWS CLI v2 for most workflows.

• Use s3cmd if you prefer its command style, but be sure to configure host_bucket explicitly.

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Need help? Share your exact command and error output with support, and include whether you are using AWS CLI or s3cmd.