How do I get a riak service started on dotcloud? I tried:
data:
riak
It says the service is unrecognized.
Riak support on dotCloud is in alpha. You can test it by following the instructions given in this recipe.
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CONTEXT: I have been learning Kubernetes and trying to get some hands-on experience. I have been using AKS to abstract the complexity of having to deal with the control plane (and because I have a free student azure account). I am deploying a NodeJS app that connects to the MongoDB database. So far the deployment has been successful but I am using MongoDB Atlas and connecting to it.
Based on the little I have learned about Stateful sets, the MongoDB Atlas service seems a lot easier and more convenient but my question is, when would it be a better idea to consider deploying a stateful set with MongoDB database? (running on the pod) What's more cost-effective? More easily scalable?
I realize the questions might be a little bit vague but I am just getting started with Kubernetes..
disclaimer: This is not a production application, just something simple I am using to learn K8S
Official docs docs uses statefullset and that would make sense. Generally all DB kind of applications deployed as statefullset. Because there can be states that nodes are not sync with each other and that would create data inconsistencies between nodes(mongodb nodes not kubernetes).
You can deploy MongoDB as deployment. I have seen it deployed. But most clients use a connection string to connect(a string of multiple node addresses). And since kubernetes exposes statefullsets with headless services you should be okay.
For learning purpose, I advice you to deploy your MongoDB in a StatefulSet. Then you can learn how it works and what problem you could encounter with this Kubernetes object.
For production application, I advice to never deploy a database in a StatefulSet if you don't need it. In fact, StatefulSet will come with a lot of problematics that you might not need to manage.
Sometimes, companies rules restrict to host their data on external company storage.
To know if you need to put your database in a StatefulSet, the question I try to answer is:
Should my DB be hosted on premise (for privacy)?
Should my DB be scalable?
Should my DB be updated frequently?
You can find a list of pros/cons on the documentation.
I will host my Spring Boot/ MongoDB application, developed with Java-8 in the cloud (in Europe and if possible in Germany - a demand of the customer).
I did a research and I really found a lot of possibilities.
The one that I think fits best are
Microsoft Azure and
AWS
honestly I dont know how to start. Does anyone know if there is a good tutorial to start - e.g. for installing MongoDB, than for uploading my jar file.
And than I would start my application with java -jar myApp.jar.
Is there a good how to do link?
If you're open to using Kubernetes then you could look at the example of https://github.com/nhatthai/spring-mongodb-minikube or https://github.com/elizabetht/kubernetes-mongo-docker-spring-boot You could use Azure's AKS as I'm guessing you wouldn't want to spend much time on cluster management. (AWS's EKS offering is still in preview mode at the moment.) If you did go this route you could test on a local cluster with minikube. It sounds like you're looking for a cloud provider but you might instead want to use Kubernetes as a cloud-agnostic orchestrator for your application. (On this you might want to look at Is Kubernetes + Docker + AWS = Azure + Service Fabric? ) This is just a suggestion - you could instead choose to go for something provider-specific e.g. using Azure's CosmosDB https://github.com/Azure-Samples/azure-cosmos-db-mongodb-spring
I really want to use mongoDB as my server backend for my android application/ web app that im hosting on the cloud. I ( think ) I installed it on my instance but Im confused as when I run my app its not showing up.
I ssh'd into my EC2 instance ( I am running Elastic Beanstalk on ssh) and I installed mongoDb and created all my tables and when I exit and ssh back into it the same tables are there however after reading up on it, I think the process is a little more complicated than that and more expensive.
Can anyone tell me if what I did was correct and if there actually a way to get mongoDb for free like this on Elastic Beanstalk? Its for my Computer Science masters.
EDIT:
I have now used Cloud Formation and installed mongo DB but now have no idea how to deploy my app without elastic beanstalk as my app runs on apache.
Thank you
No, keypoints to keep in mind:
When you SSH to your Elastic Beanstalk EC2 instances you can see a big message that says that any change that you make directly to your EC2 instances won't be saved anywhere. What I mean, you don't make ANY changes in your EC2s if you are using Elastic Beanstalk.
AWS has a MongoDB on the AWS Cloud: Quick Start Reference Deployment Guide. This document guides you through the process of installing MongoDB (includes a nice CloudFormation template -and it takes only about 15 mins to be ready-)
My Mongo database is hosted at MongoLab. I'd like to use ElasticSearch as a full text search engine on top of my DB.
As I understand MongoDB needs to run as a replica-set, but I don't have any control on how the database run. I'm currently using the 500mb free plan.
On the top of that, I'm using the scala playframework.
Was anyone successful with those technologies and services?
Update:
Finally I'm not using MongoDB anymore, and went straight for a ElasticSearch solution.
I found this nice cloud host providing a 500MB free plan http://facetflow.com/
It was very useful for my development.
I didn't find any satisfying Scala library for ES, therefore I'm using Dispatch and make direct http requests to the ES instance.
I hope that someone will find this useful.
Just a quick note ... MongoHQ has oplog support with their MongoDB Elastic Deployments ... those could help you with using Elastic Search and River.
http://blog.mongohq.com/elastic-deployments-now-with-oplog-access/
I haven't looked into this too deeply, but you might want to check out Searchly http://www.searchly.com/features/ . The features mention
Built-in crawler for crawling web pages and databases. (Currently MongoDB)
If you try this out, please let me know how it goes. I will do the same.
Update:
I haven't tried searchly, but I was able to start a MongoDB instance in replica mode on OpenShift.
I have also an Elastic Search server running on the same OpenShift "gear".
Now I need time to try connecting those two together, and then the fun will start :-)
Can you use mongodb and redis/memcached with azure?
I'm guessing no but just want to make sure.
It turns out they do support things other than .net, are they using linux servers then?
You can very easily run mongodb in Windows Azure. I presented this at MongoSV - video here.
EDIT: In December 2011, 10gen published their official MongoDB+Azure code on github. This contains a project for replica-sets, as well as a demo ASP.NET MVC application (taken from the Windows Azure Platform Training Kit) that uses a replica set for its storage.
Standalone servers are straightforward, except you have to deal with scale-out: you can't have multiple instances of a standalone server simultaneously, so you'll need to plan for this: take all but one out of the load balancer, or only launch mongod if you can acquire the Cloud Drive lock.
Replicasets are doable, as I demonstrated at MongoSV. However, I didn't cover the intricacies of graceful shutdown of a replicaset to ensure zero data loss.
You can run memcached as well - see David Aiken's post about this. Note: Now that the AppFabric Cache service is live, you should look into the pros/cons of using that over memcached. Cost-wise, AppFabric Cache should run much less, as you don't have to pay for role instances to host your cache. More info about AppFabric Cache here.
You now also have the option of running Redis in Windows Azure on Linux virtual machines ! In the case of Redis, this would allow you to use the "official" build instead of the "unsupported" Windows build ... For MongoDB, both choices seem equally valid (running on Linux virtual machines, "plain" Windows virtual machines, or using 10gen's package to run on "managed" VMs (Cloud Services).
FYI, there's now a Redis installer for Windows Azure available from MS Open Tech (my team). Here's a tutorial on how to use it: http://ossonazure.interoperabilitybridges.com/articles/how-to-deploy-redis-to-windows-azure-using-the-command-line-tool
[UPDATE] Azure now supports MongoDB and Redis.
http://azure.microsoft.com/blog/2014/04/22/announcing-new-mongodb-instances-on-microsoft-azure/
http://azure.microsoft.com/en-us/services/cache/
In the Azure Store you can now select Redis Cloud as an add-on.
Heres the Azure store description:
"Redis Cloud is a fully-managed cloud service for hosting and running Redis in a highly-available and scalable manner, with predictable and stable top performance. Tell us how much memory you need and get started instantly with your new Redis database."
PUBLISHED DATE 3/31/2014
You can access the store by selecting the "New" button in the Azure portal then "Store". I have yet to use it but it looks promising.
Azure now has a first-party Redis service, currently in preview:
http://azure.microsoft.com/en-us/documentation/articles/cache-dotnet-how-to-use-azure-redis-cache/