mongomirrorCommand

Install MongoDB Enterprise Advanced 4.0 using the following commands:

Purpose	Command
Add MongoDB Public Key	`wget -qO - https://www.mongodb.org/static/pgp/server-4.0.asc \| sudo apt-key add -`
Add MongoDB EA Repo	`echo "deb [ arch=amd64 ] http://repo.mongodb.com/apt/ubuntu bionic/mongodb-enterprise/4.0 multiverse" \| sudo tee /etc/apt/sources.list.d/mongodb-enterprise.list`
Update Apt Package Cache	`sudo apt-get update`
Install MongoDB EA 4.0.15	`sudo apt-get install -y mongodb-enterprise=4.0.15 mongodb-enterprise-server=4.0.15 mongodb-enterprise-shell=4.0.15 mongodb-enterprise-mongos=4.0.15 mongodb-enterprise-tools=4.0.15`

Edit the MongoDB Enterprise config file by running sudo vi /etc/mongod.etc update the binding, add it to a replica set, and enable username and password auth as shown below or in the sample config.

    # allow connections to any local IP address
    net:
        port: 27017
        bindIp: 0.0.0.0
    # make this node part of a replica set
    replication:
        replSetName: rsMigration
    # enable basic SCRAM username/password auth
    security:
        authorization: enabled

Run the following commands to start MongoDB:

Purpose	Command
Start mongod	`sudo service mongod start`
Initiate the rep set	`mongo --eval "rs.initiate()"`
Add root user for administration	`mongo --eval "db = db.getSisterDB('admin');db.createUser({user:'root',pwd:'root123',roles:['root']});"`
Add app user	`mongo -u root -p root123 --eval "db = db.getSisterDB('admin');db.createUser({user:'appUser',pwd:'appUser123',roles:['clusterMonitor','readWriteAnyDatabase']});"`
Get rep set config	`mongo -u root -p root123 --eval "rs.config()"`

Run the following commands to setup the load generator (POCDriver)

Purpose	Command
Update Apt package cache	`sudo apt-get update`
Install Java	`sudo apt install -y default-jre`
Download POC Driver	`wget https://github.com/johnlpage/POCDriver/raw/master/bin/POCDriver.jar`

Begin to generate data on your cluster by running the following command: java -jar POCDriver.jar -c "mongodb://appUser:appUser123@XXXX" -t 1 -e -d 60 -f 25 -a 5:5 --depth 2 -x 3 and replace the XXXX with the address of the cluster
Within the CloudShell session of your mongodb compute instance, run the following commands to prepare mongomirror

Purpose	Command
Download `mongomirror`	`wget https://s3.amazonaws.com/mciuploads/mongomirror/binaries/linux/mongomirror-linux-x86_64-ubuntu1804-0.9.1.tgz`
Extract the tar	`tar xvzf mongomirror*`
Enter extracted directory	`cd mongomirror*/bin`

Once complete, we will run the mirror command as follows:

./mongomirror 
    --host rsMigration/localhost:27017 \
    --username root --password root123 \ 
    --destination MIGRATE-shard-0/migrate-shard-00-00-oadjb.gcp.mongodb.net:27017,migrate-shard-00-01-oadjb.gcp.mongodb.net:27017,migrate-shard-00-02-oadjb.gcp.mongodb.net:27017 \
    --destinationUsername admin --destinationPassword admin123 
    --drop

graboskyc/mongomirrorCommand.md