I have scyllaDB installed in cloud. I want to run queries and check the data. Is there any way to access it by any desktop UI client or does by default it provides any web UI to access it
Thanks
The typical interface with ScyllaDB is cqlsh which is command line. Documentation is at https://docs.scylladb.com/getting-started/cqlsh/
There are a few GUIs that claim to be front-ends for Cassandra. These should work for Scylla, but I've never used them.
I wanted to Automate the Cloud Console on-premis Deployment process. I see two options to deploy the services using anypoint-cli or Rest API. Can some one please let me know what are the differences between them and which one should i choose(In terms of long term support) ?
Anypoint cli is a command line tool to interact with the REST API. It might not provide access to every endpoint of the API.
Using the API directly requires that you make the API requests in some programming or scripting language.
You should choose the one that makes more sense to you, and your use case. That can not be determined here.
I am trying to wrap my head around Parse server and have the following questions.
Is this a hosted service on AWS? and what is the benefit of using this?
What is the relationship between Parse server and MongoDB?
On the parse server site the following is stated, The Parse hosted backend will be fully retired on January 28, 2017 does this mean this is obsolete and I should avoid using this?
How do I implement security (authentication and authorization) on this?
I'll try to be brief:
The open source Parse-Server is solution that you host yourself as if it was any other web application. You can host your own instance of Parse-Server on platforms like AWS, Heroku, etc. There are lots of benefits including being able to use many more adapters (other push notification services, file storage services, etc) as well as performance improvements (no artificial limits on req/sec). Several new features are being added to the open source version that are not supported in the Facebook hosted solution.
By default Parse-Server uses MongoDB as database store (default), just like a Rails Application would use PostgreSQL as a database store. Latest Parse-Server can also use PostgreSQL as a database store.
Parse-Server is not obsolete and far from it. The shutdown date refers to the hosted solution that Facebook provided.
Parse-Server provides these features out of the box, one of the many reasons it is very popular. For this I recommend reading the documentation: http://parseplatform.github.io/docs/.
Disclaimer:
I work on the Parse Server Ruby Client SDK that is compatible with the open source server.
Many times, I get:
-Frozen, load goes to 5.0. Can't use my box.
-Just doesn't work.
Do following steps:
1.rabbitmq-plugins enable rabbitmq_management
2.service rabbitmq-server restart
3.browse to http://rabbitmq-server-ip:15672
4.login with
username: guest
password: guest
Dont forget to change your password later.
As sheki notes, rabbitmqctl is your first port of call for diagnostics, and for building monitoring on top of, but it's not suitable for actual monitoring directly being a manual command line.
I've found DataDog very good to monitor both the MQ details, plus the host platform in parallel. e.g. you can watch the queue levels and set alerts on queues backing-up, while also watching the CPU/memory/IO inflicted by these queue levels. It really helps to get ratios of resource usage, and the alerts are good. Having a uniform platform for both infrastructure and application level monitoring is surprisingly rare, but speeds up diagnoses of production issues hugely.
NewRelic is similar and also has a RabbitMQ plugin, although I've not used this plugin specifically, I've used NR for years and found it invaluable in diagnosing operational issues.
AppDynamics is another example. Similarly this allows you to drill down into your app from a high-level dashboard, and visually navigate from problems to causes. It's especially good with visualising the network of a distributed application across various services/servers. I've used this, for example, to find complex problems in .NET applications and SQL Server clusters using 3rd party Web Services (e.g. latency and its consequences to your app over chatty protocols). These things are very difficult to diagnose, especially for developers who are limited to checking their code. Diagnosing operational issues requires a much broader picture.
I gave up trying to even install and configure Nagios. I know it's the 'best' but it's the best of an old breed of self-configured beasts which we don't have time to manage. I didn't even get it going... and eventually turned to the more 'modern' cloud approach. Once you get over the trust factor, it's pretty liberating.
I'm using these APM platforms together* to aggregate data from:
Windows O/S level Event Logs/Services
Linux O/S level
AWS console level
RDS, EC2
Apache
MySQL
App integrations / custom NR plugins I've written
Rabbit MQ
*NewRelic can feed into Datadog! So if you are already using NR you don't need to install DD on those hosts as well.
Being able to view all these levels together gives you a view on the publishers, middleware, MQ servers, workers and front-end app - all in one dashboard.
I would highly recommend an approach like this, because just looking at one server alone leads you to a lot of head-scratching. Seeing an entire stack in one customisable dashboard is just so illuminating it takes most of the guesswork out of it.
Worried about installing these things? I found New Relic to be especially light-weight and unobtrusive. AppDynamics seemed to stress the host a bit more, but mostly that's because you had to run the visualisation tools on the host! (this may have changed). DataDog seems performant, but creates a lot of control panels/icons on the target host (perhaps just a visual impression).
To a four year old question - this answer probably wasn't available in 2011, but in 2015 these once 'startup' style APM services are just tens or hundred dollars a month for an unbelievably rich enterprise-level solution.
There are bunch of RabbitMQ monitoring plugins available for different monitoring systems like Nagios, Zabbix etc.
Look at http://www.rabbitmq.com/how.html#management
Using rabbitmqctl is the most straight forward solution to check the status of the node.
$ rabbitmqctl status
This should tell you the status of the RabbitMQ node.
If you have PRTG (or any probe system with a HTTP sensor check), you can check the server status described at the following page:
https://blog.cdemi.io/monitoring-rabbitmq-in-prtg/
In particular you have to
Enable Management Plugin
The rabbitmq-management plugin provides an HTTP-based API for management and monitoring of your RabbitMQ
server, along with a browser-based UI and a command line tool,
rabbitmqadmin. The management plugin is included in the RabbitMQ
distribution. To enable it, we need to run: rabbitmq-plugins enable
rabbitmq_management on the RabbitMQ nodes. For more details on the
Management plugin refer to RabbitMQ Documentation.
The web UI is located at: http://server-name:15672/ The HTTP API and
its documentation are both located at: http://server-name:15672/api/
Once done, you can check the overview of your server with the API:
http://server-name:15672/api/overview
Where you have a JSON with all details about the server, active connections, queues, etc.
This cmd will help you service rabbitmq-server status
OR try theseservice rabbitmq-server stop and service rabbitmq-server start then service rabbitmq-server status.
I am trying to move a web application that currently runs on WebSphere 6.1 application server over Glassfish 3.X. I currently have a set of WebSphere jacl files that configure an instance of a WAS for my web application (data sources, queues, etc.) and a .bat and a .sh file that execute the jacl files (I think via wsadmin). I develop on a WAS instance on my Windows PC and the software is tested on a WAS instance installed on a Solaris test machine.
Is there the equivalent concept for Glassfish?
That is, does Glassfish have a concept of a platform independent administration scripting language like WebSphere jacl/jython that can be executed from a call from a Windows .bat file or a Unix .sh file?
I'm relatively new to web development and so I may have made some conceptual mistakes and you may also have to fill in some gaps in my question.
Thanks
You can feed a configuration script to asadmin, that contains asadmin subcommands like deploy and create-jdbc-resource, etc...
The 'language' does not have any real flow-of-control or looping constructs, so you would need to flatten those types of things out of the script that would get called by your dot-bat or dot-sh.
If you are really leveraging jacl/jython this might not be possible... but if you aren't putting these interpreters through their paces, the asadmin 'language' may be rich enough for you.
Yes, take at a look at the "asadmin" command. It should be able to configure most anything you need from a script.