sarjarapu

# Don't have mtools? The easiest way to install mtools is via pip
# pip install mtools

mlaunch init --auth --replicaset --port 28000

# output
# launching: "mongod" on port 28000
# launching: "mongod" on port 28001
# launching: "mongod" on port 28002
# replica set 'replset' initialized.

sarjarapu

mongo admin --port 28000 -u user -p password --authenticationDatabase admin <<EOF
db.createUser({user: 'app_user', pwd: 'password', roles: [{role: 'readWrite', db: 'social'}]})
EOF

# The output of above command
# MongoDB shell version v3.6.2
# connecting to: mongodb://127.0.0.1:28000/
# MongoDB server version: 3.6.2
# Successfully added user: {
# 	"user" : "app_user",

sarjarapu

mongo social --port 28000 -u app_user -p password --authenticationDatabase admin
# output of above command
# MongoDB shell version v3.6.2
# connecting to: mongodb://127.0.0.1:28000/social
# MongoDB server version: 3.6.2
# replset:PRIMARY>

# create a document in person collection
db.person.insert({"fname": "Shyam", "lname": "Arjarapu"})
# output of above command

sarjarapu

mongo social --port 28000 -u human_user -p password --authenticationDatabase admin
# output of above command
# MongoDB shell version v3.6.2
# connecting to: mongodb://127.0.0.1:28000/social
# MongoDB server version: 3.6.2
# replset:PRIMARY>

# create a document in person collection
db.person.insert({"fname": "Shyam", "lname": "Arjarapu"})
# output of above command

sarjarapu

mongo social --port 28000 -u user -p password --authenticationDatabase admin <<EOF
db.createRole({
  role: "readWriteMinusDropRole",
  privileges: [
  {
    resource: { db: "social", collection: ""},
    actions: [ "collStats", "dbHash", "dbStats", "find", "killCursors", "listIndexes", "listCollections", "convertToCapped", "createCollection", "createIndex", "dropIndex", "insert", "remove", "renameCollectionSameDB", "update"]} ],
    roles: []
  }
);

sarjarapu

curl -O https://downloads.mongodb.com/osx/mongodb-osx-x86_64-enterprise-4.0.0-rc0.tgz
tar -xvzf mongodb-osx-x86_64-enterprise-4.0.0-rc0.tgz
rm mongodb-osx-x86_64-enterprise-4.0.0-rc0.tgz
mv mongodb-osx-x86_64-enterprise-4.0.0-rc0  v4.0.0-rc0
mkdir data
v4.0.0-rc0/bin/mongod --dbpath data --logpath data/mongod.log --fork --replSet rs0 --port 38000
v4.0.0-rc0/bin/mongo --port 38000 --eval "rs.initiate()"

sarjarapu

// v4.0.0-rc0/bin/mongo --port 38000

// ****************************************************
// On a sample person collection with two documents _id 1, 2
// Insert new document, _id 3, inside session1 scope
// Understand how the find operation on these scopes change
// from startTransaction to commitTransaction
// ****************************************************

// drop and recreate person collection with 2 documents _id 1, 2

sarjarapu

// v4.0.0-rc0/bin/mongo --port 38000

// ****************************************************
// On a sample person collection with two documents _id 1, 2
// Insert new document, _id 3, inside session1 scope
// Understand how the find operation on these scopes change
// from startTransaction to abortTransaction
// ****************************************************

// drop and recreate person collection with 2 documents _id 1, 2

sarjarapu

// v4.0.0-rc0/bin/mongo --port 38000

// ****************************************************
// On a sample person collection with two documents _id 1, 2
// Insert new document, _id 3, inside session1 scope
// Update a document, _id 1, in session2 scope
// Delete a document, _id 2, directly on collection
// Understand how the find operation on these scopes change
// from beginning of transaction till after commit
// ****************************************************

sarjarapu

// v4.0.0-rc0/bin/mongo --port 38000

// ****************************************************
// On a sample person collection with two documents _id 1, 2
// Update a document, _id 1, in session1 scope
// Delete a document, _id 2, in session1 scope
// Delete a document, _id 2, in session2 scope
// Understand how the find operation on these scopes change
// ****************************************************