🛡️ Docker Volume Backup Plan to S3

✅ Step 1: Update Your Package Sources

sudo apt-get update

✅ Step 2: Install Prerequisites

sudo apt-get install unzip curl

✅ Step 3: Install AWS CLI Manually

curl "https://awscli.amazonaws.com/awscli-exe-linux-x86_64.zip" -o "awscliv2.zip"
unzip awscliv2.zip
sudo ./aws/install
aws --version
  

🔐 Get Your AWS Access Key ID & Secret Access Key

• Log in to AWS Console
• Search for IAM
• Click "Users" > Your username
• Go to "Security credentials" tab
• Create Access Key for CLI use

🛠️ Configure AWS CLI

aws configure

✅ Create an S3 Bucket

aws s3 mb s3://my-devops-backup-bv123 --region us-east-1
aws s3 ls
  

📦 Where Docker Stores Volume Data

/var/lib/docker/volumes/my_volume/_data/

🛠 Sample backup.sh Script

#!/bin/bash

VOLUME_NAME="my_volume"
TIMESTAMP=$(date +%F-%H-%M)
ARCHIVE_NAME="${VOLUME_NAME}_backup_${TIMESTAMP}.tar.gz"
ARCHIVE_PATH="/tmp/${ARCHIVE_NAME}"
S3_BUCKET="s3://my-devops-backupplan"

docker run --rm -v ${VOLUME_NAME}:/data -v /tmp:/backup alpine \
  tar czf "/backup/${ARCHIVE_NAME}" -C /data .

aws s3 cp "$ARCHIVE_PATH" "$S3_BUCKET/"
rm "$ARCHIVE_PATH"

echo "✅ Backup complete: ${ARCHIVE_NAME} uploaded to ${S3_BUCKET}"
  

⏰ Schedule Backups with Cron

✅ Step 1: Copy script to home and make executable

cp /mnt/c/Users/Dell\ Inspiron/Documents/GitHub/DevOps-Linux-System-Admin/backup.sh ~/backup.sh
chmod +x ~/backup.sh
  

✅ Step 2: Edit Crontab

crontab -e

✅ Step 3: Add Cron Job (every Monday @ 2 AM)

0 2 * * 1 /usr/bin/sudo /home/dell_inspiron/backup.sh >> /home/dell_inspiron/backup.log 2>&1
  

✅ Step 4: Allow Passwordless Sudo for the Script

sudo visudo
# Add:
dell_inspiron ALL=(ALL) NOPASSWD: /home/dell_inspiron/backup.sh