/kube101

Step 1: Install mongodb Stateful Set

kubectl apply -f mongo-ss.yaml

Step 2: Install mongodb Headless svc

kubectl apply -f mongo-svc.yaml

Step 3: Connect to mongodb and verify connections

kubectl exec -it mongodb-standalone-0 sh

mongo mongodb://mongodb-standalone-0.database:27017

use admin

db.auth('admin','password') /* authenticate */

db.createCollection('todo') /* create collection */

db.getCollectionNames() /* list collections */

show dbs /* list dbs */

insert a todo's

db.todo.insertOne( { name: 'Learn Containers', completed:false })

db.todo.insertMany([ { name: 'Learn Deployments', completed:false }, { name: 'Learn Pods', completed:false }, { name: 'Learn SS', completed:false }, { name: 'Learn Jobs', completed:false }, { name: 'Learn Cron', completed:false } ])

##Find todos

db.todo.find({})

Update

db.todo.updateOne( { "name" : "Learn Containers" }, { $set: { "completed" : true } } );

db.todo.updateOne( { "name" : "Learn Pods" }, { $set: { "completed" : true } } );

Query completed task

db.todo.find( { "completed" : true } );

Delete completed task

db.todo.deleteOne( { "completed" : true } );

Commands

use admin; db.auth('admin','password'); db.createCollection('todo'); db.getCollectionNames(); show dbs; db.todo.insertOne( { name: 'Learn Containers', completed:false }); db.todo.insertMany([ { name: 'Learn Deployments', completed:false }, { name: 'Learn Pods', completed:false }, { name: 'Learn SS', completed:false }, { name: 'Learn Jobs', completed:false }, { name: 'Learn Cron', completed:false } ]); db.todo.findOne({}); db.todo.updateOne( { "name" : "Learn Containers" }, { $set: { "completed" : true } } ); db.todo.updateOne( { "name" : "Learn Pods" }, { $set: { "completed" : true } } ); db.todo.find( { "completed" : true } ); db.todo.deleteOne( { "completed" : true } );