add script to backup mongodb

backup.sh

@@ -0,0 +1,57 @@
+#!/bin/sh
+
+# Make sure to:
+# 1) Name this file `backup.sh` and place it in /home/ubuntu
+# 2) Run sudo apt-get install awscli to install the AWSCLI
+# 3) Run aws configure (enter s3-authorized IAM user and specify region)
+# 4) Fill in DB host + name
+# 5) Create S3 bucket for the backups and fill it in below (set a lifecycle rule to expire files older than X days in the bucket)
+# 6) Run chmod +x backup.sh
+# 7) Test it out via ./backup.sh
+# 8) Set up a daily backup at midnight via `crontab -e`:
+#    0 0 * * * /home/ubuntu/backup.sh > /home/ubuntu/backup.log
+
+# DB host (secondary preferred as to avoid impacting primary performance)
+HOST=localhost:27017
+
+# DB name
+DBNAME=p5js-web-editor
+
+# S3 bucket name
+BUCKET=p5js-web-editor-backup
+
+# Linux user account
+USER=ec2-user
+
+# Current time
+TIME=`/bin/date +%d-%m-%Y-%T`
+
+# Backup directory
+DEST=/home/$USER/tmp
+
+# Tar file of backup directory
+TAR=$DEST/../$TIME.tar
+
+# Create backup dir (-p to avoid warning if already exists)
+/bin/mkdir -p $DEST
+
+# Log
+echo "Backing up $HOST/$DBNAME to s3://$BUCKET/ on $TIME";
+
+# Dump from mongodb host into backup directory
+/usr/bin/mongodump -h $HOST -d $DBNAME -o $DEST
+
+# Create tar of backup directory
+/bin/tar cvf $TAR -C $DEST .
+
+# Upload tar to s3
+/usr/bin/aws s3 cp $TAR s3://$BUCKET/
+
+# Remove tar file locally
+/bin/rm -f $TAR
+
+# Remove backup directory
+/bin/rm -rf $DEST
+
+# All done
+echo "Backup available at https://s3.amazonaws.com/$BUCKET/$TIME.tar"