Automate EC2 Instance Start/Stop Using AWS Lambda.

AWS is one of the most purpler cloud service providers and most of the companies, individuals are using features are used in here. If user wants to start/stop EC2 instances after the R&D is done, why do we pay more for some 3rd party applications. Now you can use AWS Lambda instead of other 3rd party applications.

aws-lambda

AWS Lambda is free for up to some level as follows. And instance start/stop can be integrated with a Lambda function in order to accomplish the task. A lambda function is where we list the task that we want to execute during lambda function runs.
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TURN Server | Installation & Configuration On AWS

This blog post describes the way how to deploy and configure Google TURN server with all required steps. Mainly this installation and configuration has been tested on AWS(Amazon Web Services) cloud computer and confirmed. Because there are some connectivity issues while connecting to the TURN server remotely.

  1. Login to the AWS console and go to the EC2 menu and then launch new instance. In here there is called “Community AMIs”, go to that option and select the AMI called “rfc5766-turn-server”.
    Screen Shot 2015-03-24 at 10.37.52 AM
  2. There are several AMIs are listed under “rfc5766-turn-server”, take the latest version of the TURN server AMI and launch it with the relevant CPU, Memory, HDD, Network ,etc.
    Screen Shot 2015-03-24 at 10.42.17 AM
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Configure VisualVM on Ubuntu 14.10

VisualVM is a kind of data gathering software for application which are running under the Java Virtual Machines (JVM). This retrieve information related to the Java application, like heap size, heap dumps, RAM utilisation, CPU utilisation, thread count and so on. There is an special interface that they use for getting information from application ends and gathered information is analysed and displayed on the VisualVM dashboard. Remote application also can be monitored via VisualVM. Specially user can get snapshot of heat dumps also.

Follow the steps to install VisualVM on Ubuntu server.
# sudo apt-get install visualvm
# which viaualvm
# java -version

You can check the java is up & running up using the commands given above. And for testing purpose, I’m here using a Java testing application in the same host. Let’s open the visualVM and configure it to get the information of running applications.Read More »