Dump MongoDB daily and upload on S3 with AWS CLI

Dump MongoDB daily and upload on S3 with AWS CLI

Install AWS CLI on Ubuntu

$ sudo apt-get update
$ sudo apt-get install awscli

AWS Credentials

To configure AWS Credentials

$ aws configure

Then you can check ~/.aws/credentials and ~/.aws/config to see the content.

Credentials file

$ cat ~/.aws/credentials

aws_access_key_id = YOUR_ACCESS_KEY
aws_secret_access_key = YOUR_SECRET_KEY

Config file

$ cat ~/.aws/config

output = json
region = eu-central-1

Backup files

First, we need to create a folder and within add two files

Got to the root

$ cd

Create a new folders bin and logs

$ mkdir bin logs

Add a new file to backup the database to S3

$ vi bin/db-backups.sh

And add the content

backup_name=~/db_backups-`date +%Y-%m-%d-%H%M`
mongodump --host localhost --port 27017 --authenticationDatabase admin -u ADMIN_USER -p YOUR_PASSWORD --out $backup_name
tar czf $backup_name.tar.gz $backup_name
aws s3 cp $backup_name.tar.gz s3://YOUR_PATH_HERE
rm -rf $backup_name
rm $backup_name.tar.gz

Export multiple databases with mongodump

But what happens when you need to export multiple databases. The script above it works without any issue, but the real deal goes out when you need to exclude collections with multiple export.

Here is the script

DB_BACKUP_PATH=~/db_backups-`date +%Y-%m-%d-%H%M`


MONGO_AUTH_STRING="--host $MONGO_HOST --port $MONGO_PORT --authenticationDatabase admin -u $MONGO_USER -p $MONGO_PASSWORD"

dbs=`mongo $MONGO_AUTH_STRING --quiet --eval "db.getMongo().getDBNames()" | tr -d '"' | tr -d '",' | tr -d "[" | tr -d "]"`
for db in $dbs; do
    echo "Dumping database: $db"

    if [ $db == "DATABASE_NAME" ]; then # add the name of your database
        db_export_string+=" --excludeCollection=COLLECTION_NAME" # add the collection name that you want to be excluded
    mongodump $MONGO_AUTH_STRING $db_export_string --out $DB_BACKUP_PATH

aws s3 cp $backup_name.tar.gz s3://YOUR_PATH_HERE
rm $DB_BACKUP_PATH.tar.gz

The second file needs to upload the logs to S3

$ vi bin/log-backup.sh 

Add the content

backup_name=~/log_backups-`date +%Y-%m-%d-%H%M`
tar czf $backup_name.tar.gz $root_folder/logs
aws s3 cp $backup_name.tar.gz s3://YOUR_PATH_HERE
for f in $root_folder/logs/*.log; do :> $f; done
rm $backup_name.tar.gz

The last step add the following script in crontab

$ crontab -e

At the end of the file add

0 0 * * * /bin/bash ~/bin/db-backups.sh >> ~/logs/db_backups.log 2>&1
0 0 * * * /bin/bash ~/bin/log-backup.sh >> ~/logs/log_backup.log 2>&1


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