DevOps: What are backup and recovery?

1#!/bin/bash
2# backup.sh
3
4S3_BUCKET="my-backups"
5DATE=$(date +%Y%m%d)
6
7# PostgreSQL backup
8pg_dump -U postgres mydb | gzip > /tmp/backup_$DATE.sql.gz
9aws s3 cp /tmp/backup_$DATE.sql.gz s3://$S3_BUCKET/db/
10
11# File backup
12aws s3 sync /data s3://$S3_BUCKET/data/ --delete
13
14# Kubernetes backup
15kubectl get all -A -o yaml > /tmp/k8s_backup_$DATE.yaml
16aws s3 cp /tmp/k8s_backup_$DATE.yaml s3://$S3_BUCKET/k8s/
17
18echo "Backup completed: $DATE"

1#!/bin/bash
2# restore.sh
3
4BACKUP_DATE=$1
5aws s3 cp s3://my-backups/db/backup_$BACKUP_DATE.sql.gz /tmp/
6gunzip /tmp/backup_$BACKUP_DATE.sql.gz
7psql -U postgres mydb < /tmp/backup_$BACKUP_DATE.sql